MODEL 373XXA VECTOR NETWORK ANALYZER MAINTENANCE MANUAL 490 JARVIS DRIVE l MORGAN HILL, CA 95037-2809 P/N: 10410-00185 REVISION: D PRINTED: MARCH 2000 COPYRIGHT 1996 ANRITSU CO.
WARRANTY The ANRITSU product(s) listed on the title page is (are) warranted against defects in materials and workmanship for one year from the date of shipment. ANRITSU’s obligation covers repairing or replacing products which prove to be defective during the warranty period. Buyers shall prepay transportation charges for equipment returned to ANRITSU for warranty repairs. Obligation is limited to the original purchaser. ANRITSU is not liable for consequential damages.
Table of Contents, Narrative Chapter 1 — General Service Information This chapter provides a general description of Series373XXA Vector Network Analyzer systems, system serial numbers, and frequency ranges. It explains the level of maintenance covered in this manual and the service strategy used throughout this manual. It also contains static-sensitive component handling precautions and a list of recommended test equipment.
Appendix C — Connector Maintenance Check Procedures This appendix contains procedures and information needed to perform maintenance checks (including pin-depth measurements) for the connectors on all ANRITSU supplied Calibration/Verification Kit components, Through-cables, and other associated RF/microwave components.
Table of Contents, Detailed Chapter 1 General Information 1-1 SCOPE OF MANUAL · · · · · · · · · · · · · · · · · · · · · · · 1-3 1-2 INTRODUCTION · · · · · · · · · · · · · · · · · · · · · · · · · 1-3 1-3 IDENTIFICATION NUMBER · · · · · · · · · · · · · · · · · · 1-3 1-4 ONLINE MANUAL · · · · · · · · · · · · · · · · · · · · · · · · 1-3 1-5 SYSTEM DESCRIPTION · · · · · · · · · · · · · · · · · · · · · 1-4 1-6 RELATED MANUALS· · · · · · · · · · · · · · · · · · · · · · · 1-4 1-7 STANDARD OPTIONS · · ·
Chapter 2 Replaceable Parts 2-1 INTRODUCTION · · · · · · · · · · · · · · · · · · · · · · · · · 2-3 2-2 EXCHANGE ASSEMBLY PROGRAM · · · · · · · · · · · · · · 2-3 2-3 REPLACEABLE SUBASSEMBLIES AND PARTS · · · · · · · 2-3 2-4 PARTS ORDERING INFORMATION · · · · · · · · · · · · · · 2-4 Chapter 3 Operational Tests 3-1 INTRODUCTION · · · · · · · · · · · · · · · · · · · · · · · · · 3-3 3-2 CHECKING THE SERVICE LOG · · · · · · · · · · · · · · · · 3-4 3-3 SELF TEST · · · · · · · · · · · · · · · · · · · ·
Chapter 5 Troubleshooting 5-1 INTRODUCTION · · · · · · · · · · · · · · · · · · · · · · · · · 5-3 5-2 ASSOCIATED INFORMATION IN THIS MANUAL · · · · · · 5-3 5-3 RECOMMENDED TEST EQUIPMENT · · · · · · · · · · · · · 5-4 5-4 SYSTEM DOES NOT POWER-UP Line Source and Interface Checks Power Supply Voltages Check · · · Power Supply Module Check · · · 5-5 SYSTEM DOES NOT BOOT-UP · · · · · · · · · · · · · · · · · 5-7 Boot-up Process Sequence · · · · · · · · · · · · · · · · · · · · · 5-7 Troubleshooting Boot-u
6-3 LO 2 CALIBRATION · · · · · · · · · · · · · · · · · · · · · · · 6-4 Calibration Procedure · · · · · · · · · · · · · · · · · · · · · · · 6-4 Post Calibration Actions · · · · · · · · · · · · · · · · · · · · · · 6-5 6-4 FREQUENCY CALIBRATION · · · · · · · · · · · · · · · · · · 6-5 Calibration Procedure · · · · · · · · · · · · · · · · · · · · · · · 6-6 Post Calibration Actions · · · · · · · · · · · · · · · · · · · · · · 6-7 6-5 RF POWER/ALC CALIBRATION· · · · · · · · · · · · · · · · · 6-8 Calibration Pr
7-5 MAIN CHASSIS ASSEMBLIES · · · A17 System Motherboard Assembly · Front Panel Assembly · · · · · · · · Rear Panel Assembly · · · · · · · · · A18 Rear Panel Interface PCB· · · · Power Supply Module · · · · · · · · Internal VGA Monitor · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 7-16 7-16 7-16 7-17 7-17 7-18 7-19 Chapter 8 Re
8-17 SIGNAL SOURCE MODULES · · · Removal of Signal Source Module · · A21A2 Source Control PCB · · · · · A21A1 Source YIG Bias Control PCB Switched Filter Assembly · · · · · · Down Converter Assembly · · · · · · YIG Oscillator Assembly · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 8-29 8-29 8-31 8-32 8-33 8-33 8-34 Appendix A Diag
Appendix C Connector Maintenance Check Procedures C-1 INTRODUCTION · · · · · · · · · · · · · · · · · · · · · · · · · C-3 C-2 PRECAUTIONS · · · · · · · · Pin Depth Problems · · · · · · · Pin-Depth Tolerance· · · · · · · Avoid Over Torquing Connectors Teflon Tuning Washers · · · · · Avoid Mechanical Shock · · · · Keep Connectors Clean · · · · · Visual Inspection · · · · · · · · C-3 REPAIR/ MAINTENANCE · · · · · · · · · · · · · · · · · · · C-5 · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
Chapter 1 General Information Table of Contents 1-1 SCOPE OF MANUAL · · · · · · · · · · · · · · · · · · · · · · · 1-3 1-2 INTRODUCTION · · · · · · · · · · · · · · · · · · · · · · · · · 1-3 1-3 IDENTIFICATION NUMBER · · · · · · · · · · · · · · · · · · 1-3 1-4 ONLINE MANUAL · · · · · · · · · · · · · · · · · · · · · · · · 1-3 1-5 SYSTEM DESCRIPTION · · · · · · · · · · · · · · · · · · · · · 1-4 1-6 RELATED MANUALS· · · · · · · · · · · · · · · · · · · · · · · 1-4 1-7 STANDARD OPTIONS · · · · · · · ·
Figure 1-1.
Chapter 1 General Information 1-1 SCOPE OF MANUAL This manual provides general service and preventive maintenance information for the ANRITSU 373XXA family of Vector Network Analyzer (VNA) systems. It contains procedures for: q Testing the instrument for proper operation. q Verifying measurement accuracy and traceability to National Institute of Standards and Technology (NIST). q Troubleshooting a failed instrument to the exchange subassembly level or the subsystem requiring adjustment.
SYSTEM DESCRIPTION 1-5 SYSTEM DESCRIPTION 373XXA Model Frequencies Model Freq Range 37317A 22.5 MHz to 8.6 GHz 37325A 40.0 MHz to 13.5 GHz 37347A 40.0 MHz to 20.0 GHz 37369A 40.0 MHz to 40.0 GHz 37397A 40.0 MHz to 65.0 GHz 1-6 RELATED MANUALS GENERAL INFORMATION The 373XXA Analyzers are microprocessor controlled Vector Network Analyzers. Each is a single-instrument system that contains a built-in signal source, a test set, and an analyzer subsystem.
GENERAL INFORMATION 1-8 SERVICE STRATEGY SERVICE STRATEGY This paragraph provides an overview of the 373XXA VNA service strategy and available service facilities. It also provides references to the information in various locations in this manual needed to accomplish the service functions required for the 373XXA VNA.
SERVICE SUPPORT GENERAL INFORMATION more than 30 pages of service messages and data. The 373XXA will automatically remove the oldest errors first to make room for new errors, if necessary. To check the contents of the service log, use the procedure described in Chapter 3, Operational Tests. NOTE A printed or disk file copy of the Service Log (with the failure in question) must be made available to ANRITSU when exchanging a failed assembly, or when requesting service support.
GENERAL INFORMATION Technical Support SERVICE SUPPORT Technical service support is available by contacting any ANRITSU Worldwide Service Center (refer to paragraph 1-11).
SERVICE SUPPORT Verification Kits GENERAL INFORMATION The ANRITSU Verification Kits listed below are used in conjunction with the 37XXX Performance Verification Software (above). See Chapter 4, Performance Verification, for further information. N Verification Kit (Model 3663) Contains precision N Connector components with characteristics that are traceable to the NIST. Use for Models 37317A and below with Option 7N and 7 NF. 3.5 mm Verification Kit (Model 3666) Contains precision 3.
GENERAL INFORMATION 1-10 1-11 1-12 1-13 PERFORMANCE SPECIFICATIONS PERFORMANCE SPECIFICATIONS The performance specifications for all Series 373XXA models are contained in the Technical Data Sheets that are located in Appendix D, Performance Specifications. SERVICE CENTERS ANRITSU Company offers a full range of repair and calibration services at fully staffed and equipped service centers throughout the world. Table 2-1, located on page 2-4, lists all ANRITSU services centers.
RECOMMENDED TEST EQUIPMENT GENERAL INFORMATION Table 1-1. Recommended Test Equipment (1 of 2) INSTRUMENT Computer/Controller CRITICAL SPECIFICATION PC with Windows 95 or later and National Instruments GPIB hardware and software. Test Software Floppy Disk Formatted, IBM PC format GPIB Cable RECOMMENDED MANUFACTURER/MODEL Any USE* * O, P ANRITSU 2300-178 O DS/HD 1.44 Mbyte A ANRITSU 2100-2, or equivalent O, P, A RF/Microwave Cable DC – 40 GHz, K type connectors (male or female), Length, 3 ft.
GENERAL INFORMATION RECOMMENDED TEST EQUIPMENT Table 1-1.
STATIC HANDLING GENERAL INFORMATION 1. Do not touch exposed contacts on any static sensitive component. 2. 4. Wear a static-discharge wristband when working with static sensitive components. 5. 7. Handle PCBs only by their edges. 8. Do not handle by the edge connectors. Do not slide static sensitive compo- 3. nent across any surface. Do not handle static sensitive components in areas where the floor or work surface covering is capable of generating a static charge.
Chapter 2 Replaceable Parts Table of Contents 2-1 INTRODUCTION · · · · · · · · · · · · · · · · · · · · · · · · · 2-3 2-2 EXCHANGE ASSEMBLY PROGRAM · · · · · · · · · · · · · · 2-3 2-3 REPLACEABLE SUBASSEMBLIES AND PARTS · · · · · · · 2-3 2-4 PARTS ORDERING INFORMATION · · · · · · · · · · · · · · 2-4
Chapter 2 Replaceable Parts 2-1 2-2 INTRODUCTION This chapter provides replaceable parts information for all 373XXA models. The major replaceable 373XXA assemblies and parts are listed in Tables 2-2 through 2-8. The locations of these assemblies/parts are shown in Figures 2-1 through 2-4. EXCHANGE ASSEMBLY PROGRAM ANRITSU maintains a module exchange program for selected subassemblies. If a malfunction occurs in one of these subassemblies, the defective item can be exchanged.
PARTS ORDERING INFORMATION 2-4 PARTS ORDERING INFORMATION REPLACEABLE PARTS All parts listed in Tables 2-2 through 2- 8 may be ordered from your local ANRITSU service center (Table 2-1). Or, they may be ordered directly from the factory at the following address: ANRITSU Company ATTN: Customer Service 490 Jarvis Drive Morgan Hill, CA 95037-2809 Telephone: (408)-778-2000 FAX: (408)-778-0239 Table 2-1.
REPLACEABLE PARTS PARTS ORDERING INFORMATION Table 2-2.
PARTS ORDERING INFORMATION REPLACEABLE PARTS Table 2-3.
REPLACEABLE PARTS PARTS ORDERING INFORMATION Table 2-5.
PARTS ORDERING INFORMATION REPLACEABLE PARTS Table 2-7. Signal Source Module RF/Microwave Components Assembly / Part 373XXA Model / Option Part Number YIG Oscillator (2 - 20 GHz) All C21620-1 Down Converter All D27532 Switched Filter 37317A and below D45243 Switched Filter 37325A and above D45244 Table 2-8.
REPLACEABLE PARTS PARTS ORDERING INFORMATION Ovenized Reference Oscillator (Option 10 only) Power Supply Module Printed Circuit Board Assemblies, A13-A16 Fan Assembly Printed Circuit Board Assemblies, A1-A9 VGA Monitor Assembly Signal Source Module Front Panel Assembly (Includes Front Panel PCB) Figure 2-1.
PARTS ORDERING INFORMATION Port 1 Coupler/Bridge* Switched Doubler Module** REPLACEABLE PARTS Port 2 Step Attenuator Port 2 Coupler/Bridge* Floppy Disk Drive Assembly Step Attenuator 70dB Transfer Switch A17 Motherboard PCB Assembly Power Amplifier A24 VME Bus Terminator PCB Assembly 20/40 GHz Quad Buffer Amp/Sampler* * Refer to Table 2-3 ** Model 37369A Only 10dB/20dB Pads* A18 Rear Panel PCB Assembly Figure 2-2.
REPLACEABLE PARTS PARTS ORDERING INFORMATION Port 1 Coupler Port 2 Step Attenuator Port 2 Coupler Port 2 Bias Tee Port 1 Bias Tee Floppy Disk Drive Assy Switched Doubler Module Port 1 Step Attenuator Port 2 37 GHz Hipass Filter Port 1 MUX Coupler Port 2 SQM Port 2 MUX Coupler Transfer Switch SPDT Switch A17 PCB Port 1 37 GHz Hipass Filter Power Amplifier Port 1 SQM Sampler/Buffer Amplifier Shaped Pads A24 PCB A18 Rear Panel PCB Figure 2-3.
PARTS ORDERING INFORMATION REPLACEABLE PARTS Figure 2-4.
Chapter 3 Operational Tests Table of Contents 3-1 INTRODUCTION · · · · · · · · · · · · · · · · · · · · · · · · · 3-3 3-2 CHECKING THE SERVICE LOG · · · · · · · · · · · · · · · · 3-4 3-3 SELF TEST · · · · · · · · · · · · · · · · · · · · · · · · · · · · 3-5 3-4 PERIPHERALS AND INTERFACES LCD Test · · · · · · · · · · · · · · · · Front Panel Test · · · · · · · · · · · · External Keyboard Interface Test · · · Printer Interface Test · · · · · · · · · GPIB Interface Test · · · · · · · · · · 3-5 SIGNAL PAT
Chapter 3 Operational Tests 3-1 INTRODUCTION The tests in this section provide a means of fully testing the 373XXA VNA system for proper operation and signal stability. These tests are intended to be used as a periodic check of the operational functionality of the 373XXA. The tests should be performed in their entirety at least once annually. Although there is no requirement to do so, the tests should generally be run in the sequence presented.
CHECKING THE SERVICE LOG 3-2 CHECKING THE SERVICE LOG OPERATIONAL TESTS Checking the service log consists of viewing the entries written into the log. CAUTION The service log contains historical information about instrument condition and any failures that may have occurred. It should be cleared only by a qualified service engineer. Such clearing shuld be accomplished only upon determining that the errors need not be saved to disk, or printed out for service purposes.
OPERATIONAL TESTS 3-3 SELF TEST SELF TEST The self test performs a series of tests that verify that various internal 373XXA circuits are functional and operating properly. To start the self test: Step 1. Press the Option Menu key (Enhancement key group) to display the OPTIONS menu. Step 2. Select DIAGNOSTICS from menu; then select START SELF TEST (below).
PERIPHERALS AND INTERFACES 3-4 PERIPHERALS AND INTERFACES LCD Test OPERATIONAL TESTS These tests are used to verify the operation of the liquid-crystal display (LCD), front panel keys, and peripheral devices that are used with the 373XXA. They consist of the following: q LCD Test q Front Panel Test q External Keyboard Interface Test q Printer Interface Test q GPIB Interface Test This test verifies that the 373XXA LCD is functioning correctly.
OPERATIONAL TESTS Front Panel Test PERIPHERALS AND INTERFACES This test verifies that the control keys in each of the 373XXA key groups are functioning correctly. Procedure: Step 1. Press the Option Menu key (Enhancement key group) to display the OPTIONS menu. Step 2. Select DIAGNOSTICS from menu; then in sequence select: PERIPHERAL TESTS, and then FRONT PANEL. See diagram below.
PERIPHERALS AND INTERFACES OPERATIONAL TESTS Equipment Required: Printer Test Fixture (ANRITSU PN: B39553) Procedure: Step 1. Press the Option Menu key (Enhancement key group) to display the OPTIONS menu. Step 2. Select DIAGNOSTICS from menu; then in sequence select: PERIPHERAL TESTS, and then PRINTER INTERFACE. See diagram below.
OPERATIONAL TESTS GPIB Interface Test PERIPHERALS AND INTERFACES This test verifies that the 373XXA printer interface is functioning correctly. Equipment Required: GPIB cable (ANRITSU PN: 2100-2), or equivalent CAUTION Insure that no other cables are connected to either of the two rear panel GPIB ports when performing this test. Procedure: Step 1. Press the Option Menu key (Enhancement key group) to display the OPTIONS menu. Step 2.
SIGNAL PATH 3-5 SIGNAL PATH OPERATIONAL TESTS These are a series of automated tests designed to insure the 373XXA internal signal paths are functioning properly and are capable of supporting stable calibrations and measurements. These test are performed using a software test program and an external computer/controller.
Chapter 4 Performance Verification Table of Contents 4-1 INTRODUCTION · · · · · · · · · · · · · · · · · · · · · · · · · 4-3 4-2 CALIBRATION AND MEASUREMENT CONDITIONS · · · · 4-3 Standard Conditions · · · · · · · · · · · · · · · · · · · · · · · · 4-3 Special Precautions: · · · · · · · · · · · · · · · · · · · · · · · · 4-4 4-3 MEASUREMENT ACCURACY · · · · · · · · · · · · · · · · · · 4-4 Verification Software · · · · · · · · · · · · · · · · · · · · · · · 4-4 Verification Result Determination · · · · · ·
4-2 373XXA MM
Chapter 4 Performance Verification 4-1 INTRODUCTION This chapter provides specific procedures to be used to verify that the 373XXA is making accurate, traceable S-parameter measurements. You should perform the verification procedures in paragraph 4-3, “Verifying Measurement Accuracy,” at least once annually.
MEASUREMENT ACCURACY PERFORMANCE VERIFICATION Error Correction: Perform software-guided 12 term calibration. Special Precautions: When performing the procedures in this chapter, observe the following precautions: q q q q 4-3 MEASUREMENT ACCURACY Verification Software Minimize vibration and movement of system and attached components and through-cable. Clean and check pin depth and condition of all adapters, through-cable(s), and calibration components.
PERFORMANCE VERIFICATION VERIFICATION PROCEDURE data, measurement uncertainties, and the impedance transfer standards used. NOTE The total verification uncertainty in these 373XXA measurements includes the measurement uncertainty of the verification standards and the 373XXA measurement uncertainty.
KEY SYSTEM PARAMETERS PERFORMANCE VERIFICATION ANRITSU Verification Kit appropriate for the 373XXA model; refer to paragraph 4-3. GPIB cable (ANRITSU PN: 2100-2), or equivalent Procedure: Step 1. Using the GPIB cable, connect the external computer/controller to the IEEE 488.2 GPIB Interface port on the 373XXA rear panel. Step 2. Insert the CD ROM into its drive and install the 2300-237 software. Step 3. Follow the directions displayed on the computer screen to perform all tests.
PERFORMANCE VERIFICATION q Measurement Technique KEY SYSTEM PARAMETERS perature, during warm-up, calibration, and when making measurements on your DUT. The use of proper microwave connector mating techniques. The measurements of the key system performance parameters are performed using the ANRITSU 37XXX Test Software, PN: 2300-178. NOTE The Standard Conditions and Special Precautions described in paragraph 4-2 should be observed when performing these measurements.
Chapter 5 Troubleshooting Table of Contents 5-1 INTRODUCTION · · · · · · · · · · · · · · · · · · · · · · · · · 5-3 5-2 ASSOCIATED INFORMATION IN THIS MANUAL · · · · · · 5-3 5-3 RECOMMENDED TEST EQUIPMENT · · · · · · · · · · · · · 5-4 5-4 SYSTEM DOES NOT POWER-UP Line Source and Interface Checks Power Supply Voltages Check · · · Power Supply Module Check · · · 5-5 SYSTEM DOES NOT BOOT-UP · · · · · · · · · · · · · · · · · 5-7 Boot-up Process Sequence · · · · · · · · · · · · · · · · · · · · · 5-7 Trou
Many of the troubleshooting procedures presented in this chapter require the removal of instrument covers to gain access to printed circuit assemblies and other major assemblies. WARNING Hazardous voltages are present inside the instrument when ac line power is connected. Turn off the instrument and remove the line cord before removing any covers or panels. Trouble shooting or repair procedures should only be performed by service personnel who are fully aware of the potential hazards.
Chapter 5 Troubleshooting 5-1 INTRODUCTION This chapter provides specific procedures to be followed when troubleshooting 373XXA VNA systems. While performing these procedures, always observe the warnings and cautions on the opposite page. To use the troubleshooting procedures in this chapter: 1. Select the paragraph heading (starting with paragraph 5-4) that best describes the nature of the 373XXA VNA system fault. Refer to the Table of Contents page. 2.
RECOMMENDED TEST EQUIPMENT 5-3 5-4 TROUBLESHOOTING q Appendix A, Diagnostics Menus, fully describes the 373XXA Diagnostics menu tree, including the SERVICE LOG menu. q Appendix B, Error Codes and Messages, for details on each of the 373XXA hardware related error messages. q Chapter 6, System Description, for a brief technical description of the 373XXA VNA system operation.
TROUBLESHOOTING SYSTEM DOES NOT POWER-UP Step 2. Remove bottom panel, and lay the system down on its left (monitor) side. Refer to Chapter 8, Remove and Replace Procedures. Step 3. Reconnect the power line input cord to the system and Press the 373XXA Power key on. Step 4. Using a DMM or an oscilloscope, measure the DC power supply voltages listed in Table 5-1. Connect the DMM/oscilloscope to the top of the cable connectors at J13 and J4 on the Motherboard (A17). Refer to Figure 5-1 and Table 5-1.
SYSTEM DOES NOT POWER-UP Step 5. TROUBLESHOOTING Connect the common lead of the oscilloscope to J13, pin 8. Measure the Power Supply Sync signal (PS_SYNC) on J13, pin 14: Specification: 2-4 vpp Sine Wave at 109.89 KHz NOTE The power supply module will power-up without the PS_SYNC signal being present. However, the lack of this signal will introduce signal purity problems when the system is performing measurements.
TROUBLESHOOTING SYSTEM DOES NOT BOOT-UP Step 8. Using a DMM and/or an oscilloscope, measure the +5 volt power supply at connector J13 on the Motherboard. Refer to Figure 5-1 and Table 5-1, (page 505). Step 9. Press the 373XXA Power key off, and and reinstall the A13 and A14 PCB’s removed in Step 6. If any of the DC voltage tests fail in steps 1 through 8 above, replace the power supply module.
SYSTEM DOES NOT BOOT-UP TROUBLESHOOTING At this point, the system software continues the boot-up process by performing the following activities: q Issues command to A15 PCB to change display from TEXT mode to GRAPHIC mode and display ANRITSU logo. q Performs basic communication tests between the digital system (A13, etc.) and the analog subsystem (A1-A8, A21A1, A21A2); this is part of a minimal self test.
TROUBLESHOOTING SYSTEM DOES NOT BOOT-UP Step 2. Press the Utility Menu key (System State key group) to display the UTILITY FUNCTIONS OPTIONS menu. From menu, select GENERAL DISK UTILITIES (see below).
SYSTEM HAS ERROR CODE Step 4. Screen Display Problems TROUBLESHOOTING Retry boot-up. If fail, replace the Floppy Disk Drive. If the 373XXA system appears to have no screen display, perform the preliminary check below and then perform checks 1 - 3, as appropriate: Preliminary Check - Press the 373XXA Power key off and then on several times. Each time power is reapplied, pause and wait for the 373XXA software system to boot-up. During boot-up, observe the top left hand portion of the CRT display.
TROUBLESHOOTING SYSTEM HAS ERROR CODE System error codes in the range 0100 - 3999 identify the suspected failed subassembly in the two most-significant digits of the error code. For example: error codes 0200 - 0299 are related to the A2, LO2 PCB assembly. This error code assignment scheme allows for quick identification of suspect assemblies. NOTE Refer to Appendix B, Error Codes/Messages, for a list of the error codes/messages for 37300A VNA systems.
SYSTEM HAS ERROR CODE TROUBLESHOOTING Table 5-2. Phase Lock Error Message Failure Suffixes Failure Suffix Failed Assembly/ Failure Mode Failure Suffix Failed Assembly/ Failure Mode A 10 MHz not present E IF lock signal level too low B L01 unlocked F Ext synthesizer unlocked C L02 unlocked G L03 unlocked D Source unlocked none Unknown the Source Module to achieve lock. Refer to Figure 5-2 for a flowchart that troubleshoots the >40 GHz models (37397A).
TROUBLESHOOTING SYSTEM HAS ERROR CODE Table 5-3. Service Log Snap Shot Data Items Item Description SWP Sweep direction: F = forward (S11, S21), R = reverse (S22, S12) PWR System source power setting SYS System frequency setting A The calibration results for the Test A Channel PCB (A3): This is a series of 16 values divided into groups of four. Each group should have values that are approximately 14 that of those in the previous group. The first group data values should be approximately: 1.00 0.
SYSTEM HAS ERROR CODE TROUBLESHOOTING Lock Failure DE (Error Code 6XXX) Yes Fails both Forward and Reverse? Go to 1 No See Sheet 2 Yes Fails below 38 GHz? Yes Fails above 38 GHz? Yes Normal power at Port 1? No Yes No Fails above 38 GHz? Not logical.
TROUBLESHOOTING SYSTEM HAS ERROR CODE 1 From Sheet 1 Fails in Forward only ? Go to 2 No See Sheet 3 Yes Fails below 38 GHz? Yes Yes Fails above 38 GHz? Normal power at Port 1 (S21)? No Yes No No Not logical.
SYSTEM HAS ERROR CODE TROUBLESHOOTING 2 From Sheet 1 Reverse Fails Only? Not logical. Call Customer Service No Yes Fails below 38 GHz? Yes Yes Fails above 38 GHz? Normal power at Port 2 (S12)? No Not logical.
TROUBLESHOOTING 5-7 SOURCE/TEST SET/RECEIVER SOURCE/TEST SET/RECEIVER Because of the 373XXA phase-lock loop structure, it is not easy to distinguish between failures that occur in the Source Module, the Test Set Module and the Receiver Module. In order to troubleshoot failures occurring in this group of modules, it is essential to be familiar with how each module functions and how it interacts with the other modules. Refer to Chapter 7, System description, for a functional description of each module.
SOURCE/TEST SET/RECEIVER TROUBLESHOOTING The letter “D” in the error code above indicates that the failure is possibly in the Source Module. (Refer to Table 5-3.) Signal Source/Test Set Module Error Failures occurring in the Signal Source Module and Test Set Module will also produce the error codes listed in Table 5-5. Table 5-5.
TROUBLESHOOTING SOURCE/TEST SET/RECEIVER By examining these displays in conjunction with other failure symptoms, the failed assembly can be located. Example: Suppose the Non-Ratio Parameter screen display shows power holes above 270 MHz on all traces and in both sweep directions. A possible cause for this condition is a failure of the Power Amplifier assembly at certain frequencies. (Refer to Analog Subsystem Block Diagram in Figure 7-2 on page 7-6).
SOURCE/TEST SET/RECEIVER Step 3. TROUBLESHOOTING Determine whether the failure occurs during forward measurements (S11, S21) and/or reverse measurements (S22, S12): If the problem occurs in both directions at all frequencies, the fault could be in the Receiver Module, Signal Source Module, or Test Set Module. If the problem occurs in both directions at only certain frequencies, the fault could be in the Signal Source Module.
TROUBLESHOOTING PERIPHERALS/ INTERFACE If it fails, contact ANRITSU Customer Service Center. Step 3. If the problem only occurs in Band 3, replace the Switched Doubler Module assembly and repeat test. If it fails, replace Switched filter and repeat test. If it fails, contact ANRITSU Customer Service Center. Step 4. If the problem only occurs in Band 2, replace Switched Filter assembly and repeat test. If it fails, contact ANRITSU Customer Service Center.
MEASUREMENT IN QUESTION Step 3. Front Panel Test Failures: External Keyboard Interface Test Failures: Printer Interface Test Failures: GPIB Interface Test Failures: 5-9 MEASUREMENT IN QUESTION TROUBLESHOOTING Perform the CRT Monitor Test again; if fail, contact ANRITSU Customer Service Center. If the Front Panel Test failed, troubleshoot as follows: Step 1. Replace the Front Panel Assembly. Step 2. Perform the Front Panel Test again; if fail, replace the A14, I/O#1 PCB. Step 3.
TROUBLESHOOTING Measurement Conditions Check List MEASUREMENT IN QUESTION q Condition of the 373XXA. q Quality and condition of the interface connections and connectors. q Quality and condition of the calibration components, through-lines, adapters and fixtures. q Surrounding environmental conditions at the time of the measurement. q Selection and performance of the calibration for the DUT being measured. When determining possible measurement problems, check the following items: 1.
MEASUREMENT IN QUESTION TROUBLESHOOTING NOTE The procedures for performing pin depth measurements for the connectors used on ANRITSU products are contained in Appendix C, Connector Maintenance Check Procedures. 3. Check the system performance as follows: q Perform the Signal Path Tests that are part of the Operational Tests. Refer to Chapter 3, Operational Tests. q Check Match, Directivity, and Dynamic Range as described in Chapter 4, Performance Verification.
TROUBLESHOOTING SIGNAL PATHS 16.8 GHz Lowpass Filter Test B J3 9.516.25GHz J4 YIG Oscillator Test B 38 -65 GHz 40MHz - 65GHz (Test B) Test A Test A 38-65 GHz X4 (SQM) Reverse 37 GHz HiPass Filter Test A 38-65 GHz 40MHz19GHz J3 Transfer Switch (Test A/ Test B control) 40MHz-38GHz 6.38.
SIGNAL PATHS TROUBLESHOOTING 16.8 GHz Lowpass Filter Ref A 9.516.
Chapter 6 Adjustments Contents 6-1 INTRODUCTION · · · · · · · · · · · · · · · · · · · · · · · · · 6-3 6-2 LO1 CALIBRATION · · · · · · · · · · · · · · · · · · · · · · · · 6-3 Calibration Procedure · · · · · · · · · · · · · · · · · · · · · · · 6-3 Post Calibration Actions · · · · · · · · · · · · · · · · · · · · · · 6-3 6-3 LO 2 CALIBRATION · · · · · · · · · · · · · · · · · · · · · · · 6-4 Calibration Procedure · · · · · · · · · · · · · · · · · · · · · · · 6-4 Post Calibration Actions · · · · · · · · · ·
Chapter 6 Adjustments 6-1 INTRODUCTION This chapter contains procedures that are used to restore the calibration of the 373XXA signal source and the related source lock system assemblies. Use these procedures after various signal source related assemblies have been replaced due to troubleshooting or repair activities. Please insure you have read and fully understand the servicing concepts for the 373XXA presented in Chapter 1 prior to continuing with this chapter.
LO 2 CALIBRATION ADJUSTMENTS If calibration passes: Save the calibration data to (hard) disk, as follows: Step 1. Press the Option Menu key (Enhancement key group) to display the OPTIONS menu. Step 2. Select DIAGNOSTICS from menu.Then select in sequence: H/W CALIBRATIONS |DISK OPERATIONS |SAVE TO HARD DISK|HW_CAL.LO1. NOTE Also save the calibration data to floppy disk for archival purposes as a backup in case of a hard disk failure.
ADJUSTMENTS Post Calibration Actions FREQUENCY CALIBRATION Step 2. Select DIAGNOSTICS from menu.Then select in sequence: H/W CALIBRATIONS then LO2 CALIBRATION. Step 3. Follow the directions displayed on the 373XXA CRT screen, until calibration is completed. After the calibration process is completed, perform the following actions, as appropriate: If calibration passes: Save the calibration data to (hard) disk, as follows: Step 1.
FREQUENCY CALIBRATION ADJUSTMENTS n YIG Oscillator n Switched Filter q Calibration Procedure BBRAM chip on the A9 Processor PCB is replaced and the Source Calibration Data was not previously saved on disk (thus data could not be recalled from disk). Perform the following steps: Equipment Required Refer to Table 1-1, located on page 1-9, for further information about the following equipment: EIP Model 578B Frequency Counter, or equivalent.
ADJUSTMENTS FREQUENCY CALIBRATION Step 3. Follow the directions displayed on the screen to set-up and connect the frequency counter to the 373XXA. Refer also to Figure 6-1 Select START SOURCE FREQ CALIBRATION from menu (above). Dedicated GPIB 373XXA VNA 7 8 4 5 6 1 2 3 0 . - 9 EIP EIP 578B Frequency Counter Band 1 Band 2 Band 3 Microwave Cable Figure 6-1. Test Setup for Frequency Calibration Step 4.
RF POWER/ALC CALIBRATION ADJUSTMENTS If calibration fails: 6-5 RF POWER/ALC CALIBRATION q Verify the GPIB cable is connected to the Dedicated GPIB (bottom) connector on the 373XXA rear panel. q Verify that the frequency counter is functioning correctly, the cable is in good condition, and all connections are secure. q Note which calibration step failed from the screen messages. q Repeat the calibration. If it still fails, then go to Chapter 5, Troubleshooting.
ADJUSTMENTS Calibration Procedure RF POWER/ALC CALIBRATION Perform the following steps: Equipment Required Refer to Table 1-1, located on page 1-9, for further information about the following equipment: HP 437B Power Meter with HP 8487A Power Sensor or: ANRITSU ML24XXA with Version 2.02 or later, with ANRITSU Power Sensors MA2474A and SC6230 for 50 and 65 GHz units.
RF POWER/ALC CALIBRATION ADJUSTMENTS Dedicated GPIB ANRITSU 373XXA VNA 7 8 9 4 5 6 1 2 3 0 . - ANRITSU ML24XXA Power Meter SC6230 Sensor Figure 6-2. Equipment Set-Up for RF Power/ALC Calibration quence: H/W CALIBRATIONS, and then SOURCE ALC CALIBRATION (below).
ADJUSTMENTS SOURCE LOCK THRESHOLD If calibration passes: Save the calibration data to (hard) disk, as follows: Step 1. Press the Option Menu key (Enhancement key group) to display the OPTIONS menu. Step 2. Select DIAGNOSTICS from menu.Then select in sequence: H/W CALIBRATIONS |DISK OPERATIONS |SAVE TO HARD DISK|HW_CAL.ALC. NOTE Also save the calibration data to floppy disk for archival purposes as a backup in case of a hard disk failure.
SOURCE LOCK THRESHOLD ADJUSTMENTS Equipment Required None NOTE Allow the 373XXA to warm-up at least 30 minutes prior to performing calibration, and perform the ALC calibration (paragraph 6-3) before doing this calibration. Procedure Post Calibration Actions Step 1. If recalibrating a 37397A , install broadband terminations to both ports or install a throughline between ports. Step 2. Press the Option Menu key (Enhancement key group) to display the OPTIONS menu. Step 3. Select DIAGNOSTICS from menu.
ADJUSTMENTS 6-7 A8 ADJUSTMENT (37397A) Calibration Procedure A8 ADJUSTMENT (37397A) The adjustments are important to the operation of the VNA above 56 GHz. Improperly adjusted A8 Potentiometers may cause lock failures. Perform these adjustments as follows: q The A8 PCB is replaced. q 44733 Buffer Amp is replaced.
A21A2 ADJUSTMENT (37397A) ADJUSTMENTS NOTE Also save the calibration data to floppy disk for archival purposes as a backup in case of a hard disk failure. Label the disk with calibration type, date, and system model and serial numbers. Set the copy protect tab on the disk. Properly safeguard the disk so that it will be available for later use, as needed. If calibration fails: q 6-8 A21A2 ADJUSTMENT (37397A) Repeat the calibration. If it still fails, then proceed to Chapter 5, Troubleshooting.
ADJUSTMENTS A21A2 ADJUSTMENT (37397A) Procedure Post Calibration Actions Step 1. With power off and the new part installed, disconnect the RF cable from J4 of the Switched Filter. Step 2. Install Power Sensor (use a 6 or 10 dB pad for protection) to Switched Filter J4. Step 3. Turn on the 373XXA and set it to 38 GHz, CW. Step 4. Adjust A21A2R238 for maximum power, but not over +26 dBm. Step 5. Remove the pad and sensor and reconnect the RF cable to J4. Step 6.
Chapter 7 System Description Table of Contents 7-1 INTRODUCTION · · · · · · · · · · · · · · · · · · · · · · · · · 7-3 7-2 SYSTEM OVERVIEW · · · · · · · · · · · · · · · · · · · · · · · 7-3 7-3 ANALOG SUBSYSTEM ASSEMBLIES · · · · · · · · · · · · · 7-7 Signal Source Module · · · · · · · · · · · · · · · · · · · · · · · 7-7 Test Set Module · · · · · · · · · · · · · · · · · · · · · · · · · · 7-8 A7 PCB, 10 MHz Timebase · · · · · · · · · · · · · · · · · · · 7-9 Receiver Module · · · · · · · · · · · · · · · ·
Chapter 7 System Description 7-1 INTRODUCTION This chapter provides a brief overview of the functional assemblies and major parts that comprise a typical Series 373XXA VNA system. It also briefly describes the operation of each major assembly. 7-2 SYSTEM OVERVIEW Series 373XXA Vector Network Analyzers are ratio measurement systems used to measure complex vector signal characteristics (real/imaginary, magnitude/phase, etc) of devices and systems in the 22.5 MHz to 65 GHz frequency range.
SYSTEM OVERVIEW SYSTEM DESCRIPTION An internal service log stores a record of system failures, data about the failures, and other key system service information. The service log is implemented using internal battery-backed SRAM memory.
SYSTEM DESCRIPTION SYSTEM OVERVIEW bias tee a1 Loop b1 Loop FP Amp Loop TEST SET MODULE** 0-70dB Step Attenuator PORT 1 EXTERNAL KEYBOARD QUAD SAMPLER/BUFFER µP LOCK DET YIG OSC 2-20 GHz * b1 YIG IF / SYNC/ DET S S F FLTR / S/H / A/D 2X DOUBLER LVL DET LVL DET F SWITCHED FILTER ALC R * a1 HARD DISK DRIVE RAM BBRAM S/H * a2 S/H S *b2 S EXT VGA MONITOR GPIB INTERFACE FLOPPY DISK DRIVE ANALOG MUX S R.P.
SYSTEM OVERVIEW SYSTEM DESCRIPTION D/A A21A2 QB* SOURCE CONTROL QB* P1 P2 A21A1 SOURCE MAIN YIG/BIAS COIL DRIVER YIG P1 BIAS FM DRIVER 2-20GHz D/A P2 BIAS A8 SOURCE LOCK / SIGNAL SEPARATION CONTROL 10 MHz QB* ÷4 COUPLER / BIAS TEE (LF BRIDGES IN 37217A AND BELOW) -6MHz/V 2.5 MHz A3 TEST A IF IF SYNC 2.5M SOURCE LOCK (A4) SOURCE TRACK (A2) OPTIONAL REFERENCE A EXTENSION 13.5GHz LPF LVL DET 8.4GHz LPF OPTIONAL REFERENCE B EXTENSION 3.3GHz LPF x2 TA 89MHz RA RA S 5.
SYSTEM DESCRIPTION 7-3 ANALOG SUBSYSTEM ASSEMBLIES Signal Source Module ANALOG SUBSYSTEM ASSEMBLIES The following paragraphs briefly describe the major assemblies that comprise the 373XXA Analog Subsystem. Descriptions of the functions performed by each assembly are also included. The Signal Source Module consists of the items listed below; refer to the block diagram of the Analog Subsystem (Figure 7-2) at left.
ANALOG SUBSYSTEM ASSEMBLIES SYSTEM DESCRIPTION nals are then sent to the A21A1 YIG/Bias Controller PCB. This PCB converts the analog signals to YIG main tuning coil current. The main tuning coil current from A21A1 YIG/Bias Controller PCB coarsely tunes the YIG-tuned Oscillator to within a few megahertz of the final output frequency. The YIG phase-lock loop then fine tunes the YIG-tuned oscillator to the exact output frequency via the FM (fine tuning) coil.
SYSTEM DESCRIPTION ANALOG SUBSYSTEM ASSEMBLIES Each output circuit path from the Transfer Switch contains a splitter. One path from each splitter goes to the associated directional coupler (Port 1/Port 2) and the other path feeds the associated “Reference” input of the Receiver Module (RA/RB), via a level detector. The output generated by the two parallel configured level detectors is a DC signal that corresponds to the output level of the stimulus signal.
ANALOG SUBSYSTEM ASSEMBLIES Receiver Module SYSTEM DESCRIPTION The Receiver Module consists of the items listed below; refer to Figure 7-2. q Quad Sampler/Buffer Amplifier with integrated SRD (step recovery diode) q Power Amplifier q A1, LO1 PCB q A2, LO2 PCB The Receiver Module is a four channel two stage Sampler/Buffer Amplifier and Down Conversion unit. It simultaneously converts the four 22.5 MHz - 40 GHz signals from the Test Set Module into three 2.
SYSTEM DESCRIPTION A8, Source Lock/ Signal Separation and Control PCB ANALOG SUBSYSTEM ASSEMBLIES The Source Lock Phase Comparator circuit on the A8 Source Lock/ Signal Separation Control PCB compares the Source Lock (Reference A/B) signal from the Receiver Module with a signal derived from the10 MHz reference oscillator. The output of this circuit is the –6 MHz/V correction signal, which is routed to the circuit on the A21A2 Source Control PCB that generates the FM coil tuning current signal.
ANALOG SUBSYSTEM ASSEMBLIES A7 PCB, LO3 A5 A/D Converter PCB SYSTEM DESCRIPTION The A7, Third Local Oscillator (LO3) Assembly, provides a fixed 2.42 MHz Local Oscillator signal that is used on the A3, A4, and A6 PCBs to down-convert the 2.5 MHz IF signals to 80 kHz. It also provides an 80 kHz standard signal for the IF Section Calibration process that occurs automatically approximately every six minutes.
SYSTEM DESCRIPTION 7-4 DIGITAL SUBSYSTEM ASSEMBLIES DIGITAL SUBSYSTEM ASSEMBLIES The following paragraphs briefly describe the major assemblies that comprise the 373XXA Digital Subsystem. The digital subsystem provides all system control, I/O interface, digital signal processing, and data presentation functions. The major assemblies that comprise the 373XXA digital PCB subsystem are listed below. Refer to Figure 7-3, at left.
DIGITAL SUBSYSTEM ASSEMBLIES MICROPROCESSOR PCB SYSTEM DESCRIPTION DRAM MEMORY ARRAY SRAM MEMORY ARRAY WITH BATTERY BATTERY BACKED RAM/CLOCK A18 REAR PANEL PCB A15 GRAPHICS PCB BIAS TEE GRAPHICS PROCESSOR EPROM / FLASH INTERRUPT VECTOR DRAM TO BIAS TEES DEGAUSS CRT BRIGHT MC CHIP SCSI COPROCESSOR 68040 µP ETHERNET CONTROLLER VMECHIP2 VME INTERFACE SERIAL I/O CONTROLLER VIDEO PALATTE ANA OUT DIGITAL IN VME TERMINATOR BOARD P/O J19* LIMIT LINES P/O J19** PRINTER INTERFACE A17 MOTHERBOA
SYSTEM DESCRIPTION DIGITAL SUBSYSTEM ASSEMBLIES q A13 I/O Interface #1 PCB Assembly A14 I/O Interface #2 PCB Assembly System boot-up EPROM – This chip contains the boot-up instructions used by the system CPU at power-up. This PCB assembly performs the following functions: q Floppy drive control – interface for the Floppy Drive Assembly. q External Keyboard control – interface for the front panel Keyboard connector. q Interface for the A18 Rear Panel PCB Assembly (below).
MAIN CHASSIS ASSEMBLIES A15 Graphics Processor PCB Assembly A16 Hard Disk PCB Assembly Floppy Disk Drive Assembly A24 VME Bus Terminator PCB 7-5 MAIN CHASSIS ASSEMBLIES A17 System Motherboard Assembly SYSTEM DESCRIPTION This PCB assembly contains circuitry that simultaneously drives both the internal VGA monitor and an external VGA monitor (if used), as follows: q It receives measurement and display information from the A9 Main Processor PCB and generates screen display (video) information.
SYSTEM DESCRIPTION MAIN CHASSIS ASSEMBLIES q Front panel casting NOTE The front panel is an integrated assembly that is replaceable only as a single unit.
MAIN CHASSIS ASSEMBLIES Power Supply Module SYSTEM DESCRIPTION The Power Supply Module is a single self contained assembly mounted on the rear panel. This module provides: q Unregulated +5, +9, ±18, and ±27 Vdc supply voltages to the other assemblies of the 372XXB. q Dedicated AC line connection for the Internal VGA Monitor. q Thermal and over-current shutdown protection circuitry q Sensing and input power regulation for operation with 85 – 264 VAC, 48 – 63 Hz, universal AC line input power.
SYSTEM DESCRIPTION Internal VGA Monitor MAIN CHASSIS ASSEMBLIES The internal monitor assembly is powered from a dedicated AC Line from the Power Supply Module. The degaussing and brightness controls for the internal monitor are located on the rear panel for easy access by the operator. There are no internal adjustments for this unit. NOTE The internal monitor assembly is not a field repairable unit.
Chapter 8 Remove and Replace Procedures Table of Contents 8-1 INTRODUCTION · · · · · · · · · · · · · · · · · · · · · · · · · 8-3 8-2 EQUIPMENT REQUIRED · · · · · · · · · · · · · · · · · · · · 8-3 8-3 COVERS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 8-4 8-4 A1–A9 AND A13–A16 PCBS · · · · · · · · · · · · · · · · · · · 8-6 A1 – A9 PCBs · · · · · · · · · · · · · · · · · · · · · · · · · · · 8-6 A13 – A16 PCB’s · · · · · · · · · · · · · · · · · · · · · · · · · · 8-6 8-5 A9 PCB BBRAM CHI
8-17 SIGNAL SOURCE MODULES · · · Removal of Signal Source Module · · A21A2 Source Control PCB · · · · · A21A1 Source YIG Bias Control PCB Switched Filter Assembly · · · · · · Down Converter Assembly · · · · · · YIG Oscillator Assembly · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 8-29 8-29 8-31 8-32 8-33 8-33 8-34 8-16 REMOVE / REPLACE TEST SET MODULE ASSEMBLIES · · · · · · · · · · · · ·
Chapter 8 Remove and Replace Procedures 8-1 INTRODUCTION This chapter provides procedures for removing and replacing 373XXA field exchangeable assemblies and components. When using these procedures, please observe the warning and caution notices below. WARNING Hazardous voltages are present inside the instrument when ac line power is connected. Turn off the instrument and remove the line cord before removing any covers or panels. CAUTION Many assemblies in the 373XXA contain static-sensitive components.
COVERS 8-3 COVERS REMOVE AND REPLACE Adjustment and troubleshooting operations require removal of the top cover. Replacement of some 373XXA assemblies and parts require removal of all covers. The following procedures describe this process. NOTE It is only necessary to loosen the 373XXA handle assemblies to remove the top, bottom, or side covers. However, if the front panel is to be removed, remove the handle assemblies at this time. Preliminary: q Switch the 373XXA power off. Remove the power cord.
REMOVE AND REPLACE COVERS n Place the 373XXA on its right side (monitor down). n If not already done, remove the feet from the two left-side corners at the rear of the 373XXA. n Remove two center screws from the left cover. n Remove the center screw from rear of the left side cover. n Lift and slide the side cover away from the 373XXA. Step 5. To remove the right cover: n Place the 373XXA its left side (monitor up).
A1–A9 AND A13–A16 PCBS 8-4 A1–A9 AND A13–A16 PCBS REMOVE AND REPLACE This paragraph provides instructions for removing and replacing the A1– A9 and A13 – A16 PCB’s, which are located underneath the covers of the large and small card-cages, respectively. Preliminary: q Switch the 373XXA power off. Remove the power cord. Remove the top cover (paragraph 8-3). A1 – A9 PCBs Procedure: Step 1. Place the 373XXA in normal (top-side up) position. Step 2.
REMOVE AND REPLACE A9 PCB BBRAM CHIP A9 PCB Assembly PCB Assemblies A13-A16 Printed Circuit Board Assemblies, A1-A8 Figure 8-2.
A9 PCB BBRAM CHIP REMOVE AND REPLACE Preliminary: Before removing and replacing the BBRAM Chip it is necessary to save the following calibration data to the hard disk: signal source Frequency, ALC, Source Lock Threshold, LO1 and LO2. Proceed as follows: OPTIONS Press the Option Menu key (Enhancement key group) to display the OPTIONS menu (left). Step 2. Select DIAGNOSTICS from the menu. Then select in sequence: H/W CALIBRATIONS |DISK OPERATIONS |SAVE TO HARD DISK |HW_CAL.ALL.
REMOVE AND REPLACE OPTIONS START SELF TEST REAR PANEL OUTPUT READ SERVICE LOG MULTIPLE SOURCE CONTROL PRESS TO SELECT INSTALLED OPTIONS PERIPHERAL TESTS TROUBLESHOOTING (FOR SERVICE ONLY) H/W CALIBRATIONS (FOR SERVICE ONLY) PRESS TO SELECT HARDWARE CALIBRATIONS (FOR SERVICE ONLY) H/W CALIBRATIONS DISK OPERATIONS SAVE TO HARD DISK LO1 CALIBRATION SAVE TO FLOPPY DISK LO2 CALIBRATION RECALL FROM HARD DISK SOURCE FREQUENCY CALIBRATION RECALL FROM FLOPPY DISK SOURCE ALC CALIBRATION
A9 PCB SRAM BATTERY 8-6 A9 PCB SRAM BATTERY REMOVE AND REPLACE This paragraph provides instructions for removing and replacing the SRAM Battery located on the A9 Main Processor PCB assembly. Preliminary: q Switch the 373XXA power off. Remove the power cord. CAUTION The SRAM battery incorporates flammable materials such as lithium and organic solvents. If lithium batteries, such as this one, are mistreated or incorrectly handled, they may burst open and ignite. This can result in possible injury or fire.
REMOVE AND REPLACE SAVE/RECALL FRONT PANEL AND CAL DATA SAVE RECALL PRESS TO SELECTFUNCTION SAVE FRONT PANEL SETUP TO INTERNAL MEMORY A9 PCB SRAM BATTERY n Check the Service Log for any new errors. (Note that the service log is non-volatile; it may contain error entries from a previous problem or service operation.) RECALL (OR SAVE) FRONT PANEL SETUP IN INTERNAL MEMORY n Run the Self Test procedure.
A24 VME BUS TERMINATOR PCB 8-7 A24 VME BUS TERMINATOR PCB REMOVE AND REPLACE This paragraph provides instructions for removing and replacing the A24 VME Bus Terminator PCB assembly. Preliminary: q Switch 373XXA power off. Remove the power cord. q Remove bottom cover (paragraph 8-3). Remove/Replace Procedure Step 1. Place the 373XXA on its top (bottom-side up). Step 2. Locate the A24 PCB assembly (Figure 8-5).
REMOVE AND REPLACE FRONT PANEL ASSEMBLY Equipment Required: q Open-end wrench, 1 in. Preliminary: q Switch 373XXA power off. Remove the power cord. q Remove handle assembles and all covers (paragraph 8-3). Remove/Replace Procedure: Step 1. Place the 373XXA in normal (top-side up) position. Step 2. Remove the four corner screws and the top center screw that secure the front panel assembly to the chassis (see Figure 8-6). Step 3. Place the 373XXA on its top (bottom-side up). Step 4.
VGA DISPLAY MONITOR REMOVE AND REPLACE Step 6. Locate the cable from the front panel Power switch to connector J20 on the A17 Motherboard PCB. Disconnect at A17, J20 end. Step 7. Locate the cable from the front panel Keyboard interface connector to connector J16 on the A17 Motherboard PCB. Disconnect at A17, J16 end. Step 8. Locate the cables from the front panel Bias Input BNC connectors to connector P2 on the A18 Rear Panel PCB. Disconnect at A18, P2 end.
REMOVE AND REPLACE VGA DISPLAY MONITOR NOTE All the the cables mentioned above have keyed connectors. Step 3. Remove the four screws that fasten the monitor assembly to the chassis (see Figure 8-7). Do not unfasten the screw with the blue plastic washer under the screw head. Step 4. Gently move the monitor assembly to the rear and lift away from chassis, with cables still attached. Place on work surface next to unit.
LIQUID CRYSTAL DISPLAY (LCD) 8-10 LIQUID CRYSTAL DISPLAY (LCD) REMOVE AND REPLACE This paragraph provides instructions for removing and replacing the internal LCD assembly. NOTE It is not necessary to remove the front panel assembly to perform this procedure. Preliminary: q Switch 373XXA power off. Remove the power cord. q Remove all covers (paragraph 8-3). Remove/Replace Procedure: Step 1. Place the 373XXA on its right side (monitor down). Step 2.
REMOVE AND REPLACE 8-10A LCD BACKLIGHT LAMP FLOPPY DISK DRIVE This paragraph provides instructions for the removal and replacement of the LCD Backlight Lamp, which is recommended at approximately 10,000 hours of operation, or if the display becomes dim. NOTE The front panel assembly does not have to be removed. Preliminary: q Switch 373XXA power off. Remove the power cord. q Remove all covers (paragraph 8-3). Remove/Replace Procedure: Step 1. Remove the LCD assembly (paragraph 8-10). Step 2.
FLOPPY DISK DRIVE REMOVE AND REPLACE Figure 8-9. Location of Floppy Disk Drive Assembly Mounting Plate Screws Preliminary: q Switch 373XXA power off. Remove the power cord. q Remove all covers (paragraph 8-3). NOTE All the the cables mentioned in the following procedure have “keyed” connectors. Remove/Replace Procedure: 8-18 Step 1. Place the 373XXA on its top (bottom-side up). Step 2. At the floppy drive, disconnect the four-conductor Disk Power cable that connects to J1 of the motherboard PCB.
REMOVE AND REPLACE REAR PANEL ASSEMBLY To replace the Floppy Disk Drive assembly, perform the steps above in the reverse order. 8-12 This paragraph provides instructions for removing and replacing the Rear Panel Assembly. REAR PANEL ASSEMBLY Equipment Required Option 11 only): q Connector torque wrench ( 516 in), ANRITSU Model 01-201, or equivalent. Preliminary: q Switch 373XXA power off. Remove the power cord. q Remove all covers (paragraph 8-3). Remove/Replace Procedure: Step 1.
REAR PANEL ASSEMBLY REMOVE AND REPLACE Step 3. Remove the two screws located near top and middle of rear panel (near fan-mounting screws). See Figure 8-10. Step 4. Locate cable from the rear-panel 10 MHz Ref In BNC connector to connector J2 of A7 PCB. Disconnect at A7, J2 end. (Pull up gently to disconnect.) Step 5. Locate cable from the rear-panel 10 MHz Ref Out BNC connector to connector J3 of A7 PCB. Disconnect at A7, J3 end. Step 6.
REMOVE AND REPLACE FAN ASSEMBLY work surface. Remove cables from cable harnesses, as required. To replace the Rear Panel Assembly, perform the steps above in the reverse order. 8-13 FAN ASSEMBLY This paragraph provides instructions for removing and replacing the Rear Panel Fan Assembly. Preliminary: q Switch373XXA power off. Remove the power cord. q Remove all covers (paragraph 8-3). q Remove Rear Panel (paragraph 8-12). Remove/Replace Procedure: Step 1.
A18 REAR PANEL PCB REMOVE AND REPLACE Step 2. Remove the six screws from the rear panel that fasten it to the left and right edges of the Power Supply Module (see Figure 8-10). Gently separate the two units. To replace the Power Supply Module, perform the steps above in the reverse order. 8-15 A18 REAR PANEL PCB This paragraph provides instructions for removing and replacing the A18 Rear Panel PCB assembly. Equipment Required: q Nut Driver, 9 32 in. q Nut Driver, 3 16 in.
REMOVE AND REPLACE A18 REAR PANEL PCB 11 REF W135 W123 W127 W125 W135 J4 A33J3 J2 W131 REF A A33J2 A32J5 TOP TEST A J3 J1 A33 A35J1 A35 A35J2 A31 W141 A31J8 FP OUT A31J9 J8 A32J3 BOTTOM J9 P/O A31 J10 W145 REF B W132 A31J10 FP IN J11 A31J11 TEST B A32J3 J3 A36J2 A32 J1 A32J1 J2 A32J2 J1 A39J1 J2 W110 A39J2 A39 WI07 J4 A32J4 J2 W132 A32 A34 A34J3 J3 J1 W141 XFER SW W109 W86 Signal Source Module Output Connector W87 A32J2 BOTTOM W123 Input Connector I
A18 REAR PANEL PCB REMOVE AND REPLACE 11 REF W123 W144 W125 W124 6 43 J4 A33J3 J2 W131 RE F A T E ST A J1 A33 A33J2 A3 2 J 5 T OP J3 A35J1 A35 W141 FP OUT A3 1 J 8 A3 1 J 9 J8 P / A32J3 BOTTOM J9 O A3 1 FP IN J1 0 J1 1 W145 RE F W132 A35J2 A3 1 B A3 1 J 1 0 A3 1 J 1 1 T E ST B A3 2 J 3 J3 A3 6J 2 A3 2 J1 J2 A36J1 A36 A3 2 J 1 W8 1 A3 2 J 2 J1 A39J1 J2 W1 0 6 A39J2 A39 WI43 A3 2 J 4 J4 J2 A34 A34J3 J3 J1 W86 Figure 8-12.
REMOVE AND REPLACE 8-16 TEST SET MODULE ASSEMBLIES TEST SET MODULE ASSEMBLIES The following paragraphs provide instructions for removing and replacing the RF/microwave components that comprise the Test Set Module . Equipment Required: q Connector torque wrench ( 516 in), ANRITSU Model 01-201, or equivalent. q Open-end wrench, 1 in. CAUTION Throughout these procedures, always use the 516 in.
TEST SET MODULE ASSEMBLIES REMOVE AND REPLACE To replace the Transfer Switch assembly, perform the steps above in the reverse order. W111 for Models 37211B and 37217B Input Coupler(s)/ Low Freq Bridge(s) Use the following procedure to remove/replace the Input Coupler(s) of all models 37225B through 37269B and the Low Frequency Bridges of models 37211B and 37217B. Procedure: Step 1. Using a 1 in.
REMOVE AND REPLACE TEST SET MODULE ASSEMBLIES Output Connector Power Cable Power Amp In Cable A41 Power Amp Assy P/O Buff Amp/Sampler (A31) Rigid Coax Line Figure 8-13. A41 Power Amplifier Assembly, Details Buffer Amplifier/ Sampler(A31) Use the following procedure to remove/replace the Buffer Amplifier/ Sampler assemblies of all models. Preliminary: q Remove the Power Amplifier assembly (see previous paragraph). Procedure: 373XXA MM Step 1.
TEST SET MODULE ASSEMBLIES REMOVE AND REPLACE NOTE The matching pin numbers are identified on the cable connectors and on the connector body.) Step 4. Repeat Step 3 for the TEST B and REF B cable connectors. Step 5. Remove the nine screws that fasten the Buffer Amplifier/Sampler assembly to the test set tray, and lift the assembly from the Test Set Module. To replace the Buffer Amplifier/Sampler assembly, perform the steps above in the reverse order.
REMOVE AND REPLACE SIGNAL SOURCE MODULES Step 2. Disconnect the semi-rigid coaxial line W81 from the input connector of the SDM; see Figure 8-12. Step 3. Remove the two screws that fasten the SDM to the Test Set Module tray. Step 4. Disconnect the semi-rigid coaxial line W80 from the output connector of the SDM; see Figure 8-12. Carefully lift the assembly from the Test Set Module. To replace the Switched Doubler Module assembly, perform the steps above in the reverse order.
SIGNAL SOURCE MODULES REMOVE AND REPLACE Step 5. Disconnect the cables from connectors J1 and J2 of the A21A2 Source Control PCB. (Pull up gently to disconnect.) Note that the connector end of each cable is marked with the associated A21A2 connector number. Step 6. Disconnect the cable from connector J3** of the A21A2 Source Control PCB. Dress cables away from the Signal Source Module. Step 7. Remove the three screws that fasten the Signal Source Module to the chassis side rail. See Figure 8-15.
REMOVE AND REPLACE SIGNAL SOURCE MODULES Captive Screws A21A2 Source Control PCB Side Rail Mounting Screws Figure 8-15. Signal Source Module Removal Details A21A2 Source Control PCB Use the following procedure to remove/replace the A21A2 Source Control PCB assembly. Procedure: Step 1. Unfasten the two PCB retainers at the top corners of the A21A2 Source Control PCB (see Figure 8-16). To unfasten, turn screwdriver slot 14 turn counter-clockwise. Step 2.
SIGNAL SOURCE MODULES REMOVE AND REPLACE Figure 8-16. Signal Source Module Assemblies Removal Details A21A1 Source YIG Bias Control PCB Use the following procedure to remove/replace the A21A1 Source YIG Bias Control PCB assembly. Procedure: 8-32 Step 1. Disconnect the Switched Filter assembly power cable from connector J1 of the A21A1 Source YIG Bias Control PCB. (Pull up gently on ribbon cable to disconnect.) Step 2.
REMOVE AND REPLACE SIGNAL SOURCE MODULES Step 5. Remove the four screws that fastens the back plate of the source module chassis to the heatsink of the A21A1 PCB. Step 6. Place the Signal Source Module on its‘ back plate. Step 7. Unfasten the six PCB retainers on the bottom of the A21A1 PCB. (To unfasten, turn screwdriver slot 14 turn counter-clockwise.) Gently separate the A21A1 PCB (including the heat sink) from the Signal Source Module.
SIGNAL SOURCE MODULES REMOVE AND REPLACE Step 2. Disconnect the semi-rigid coaxial lines from the RF INPUT connector and RF OUTPUT connector of the Down Converter assembly. Step 3. Remove the two screws that fasten the Down Converter assembly to the source module chassis and lift the assembly from the Signal Source Module. To replace the Down Converter assembly, perform the steps above in the reverse order.
Appendix A Diagnostics Menus Table of Contents A-1 INTRODUCTION · · · · · · · · · · · · · · · · · · · · · · · · · A-3 A-2 DIAGNOSTICS MENUS Start Self Test · · · · · · Read Service Log · · · · Installed Options · · · · Peripheral Tests · · · · · Troubleshooting · · · · · H/W Calibrations · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
Appendix A Diagnostics Menus A-1 INTRODUCTION This appendix contains descriptions and usage information for the 373XXA Diagnostic Menus that are available via the front panel Option Menu key. A-2 DIAGNOSTICS MENUS The internal diagnostic capabilities of the 373XXA are accessed via the Options Menu key, which is part of the front panel Enhancement key group. The selections available from the top level DIAGNOSTICS menu (DG1) are listed below. See Figure A-1.
DIAGNOSTICS MENUS APPENDIX A NOTE The service log must always be printed out or saved to disk and sent to the factory along with a failed assembly. Due to the importance of the information provided by the service log to ANRITSU factory Service Engineers, the exchange prices are only valid if the service log data (disk or printout) is submitted to the factory with the failed assembly. This menu is available to service and non-service personnel.
APPENDIX A DIAGNOSTICS MENUS CAUTION Always exit the troubleshooting mode via the DG4 menu selection FINISHED, RECOVER FROM TROUBLESHOOTING to insure proper system state recovery from your troubleshooting activities. These menus are for service personnel only. H/W Calibrations The H/W CALIBRATIONS menus perform various internal automated hardware calibrations, including ALC and Frequency calibrations.
SYSTEM DESCRIPTION DIAGNOSTICS MENUS MEN U TRIG ME NU O RP1 TRIGGERS MEASUREMENT REAR PANEL OUTPUT MODE INTERNAL OUTPUT ON (OFF) EXTERNAL SELECT MODE XXXXXXXXXX I.F. CALIBRATION HORIZONTAL OR PHASE LOCK SCALING AUTOMATIC ON (OFF) I.F. CAL TRIGGER I.F. CAL Enhancement O pt ion M e nu Avg Smooth Menu STOP/LOCK a2 X.XXXX V PRESS TO SELECT OR TURN ON/OFF Video IF BW Tr ac e Smo oth START/LOCK a1 X.
Appendix B Error Messages Table of Contents B-1 INTRODUCTION · · · · · · · · · · · · · · · · · · · · · · · · · B-3 B-2 OPERATIONAL ERROR MESSAGES · · · · · · · · · · · · · · B-3 B-3 DISK RELATED ERROR MESSAGES· · · · · · · · · · · · · · B-3 B-4 GPIB RELATED ERROR MESSAGES · · · · · · · · · · · · · · B-3 B-5 SERVICE LOG ERROR MESSAGES 0000 - 0099 · · · · · · · · · · · · · · 0100 - 3999 · · · · · · · · · · · · · · 4000 - 4999 · · · · · · · · · · · · · · 5000 - 5999 · · · · · · · · · · · · · · 6000 -
Appendix B Error Messages B-1 B-2 B-3 B-4 B-5 INTRODUCTION This appendix provides a listing of error messages that appear on the 373XXA display or that are written to the internal software Service Log. OPERATIONAL ERROR MESSAGES Table B-1 provides a listing and description of the operational error messages. For the most part, these errors are displayed only on the 373XXA display and are caused by incorrectly operating the 373XXA.
SERVICE LOG ERROR MESSAGES APPENDIX B rule will be an assembly error code between xx00 - xx09, where xx is the assembly that is suspected of failing during normal operation. For example, error 0500 is a run-time error related to the A5 A/D assembly. 4000 - 4999 These messages indicate internal H/W calibration problems. 5000 - 5999 These messages indicate run-time RF power problems. 6000 - 6999 These messages indicate run-time phase lock problems.
APPENDIX B SERVICE LOG ERROR MESSAGES Table B-1. Operational Error Messages (1 of 2) Error Message Description Corrective Action ATTENUATOR UNAVAILABLE Option 6 Port 2 Test Step Attenuator is not installed. Install Option 6 Step Attenuator, DIFFERENT H/W SETUP. RECALL ABORTED Model and/or options is (are) different from the recalled setup. Reconfigure system to duplicate the hardware setup that was used to store the saved data.
SERVICE LOG ERROR MESSAGES APPENDIX B Table B-1. Operational Error Messages (2 of 2) Error Message Description Corrective Action STANDARD CAL NOT VALID FOR WAVEGUIDE Cannot use the standard method when calibrating with waveguide. Use the Offset Short method with waveguide. START F FOLLOWS PREVIOUS STOP F Start frequency of current band immediately follows stop frequency of previous band. Cannot be modified. None.
APPENDIX B SERVICE LOG ERROR MESSAGES Table B-2. Disk-Related-Error Messages (1 of 1) Error Message Description Corrective Action 7140 GENERAL FLOPPY DRIVE FAIL Invalid disk media or format. Use 1.44 MB diskette and/or format in the 373XXA. 7142 FLOPPY DISK READ ERROR Read error when accessing disk file. Use 1.44 MB diskette and/or format in the 373XXA. 7143: FLOPPY DISK WRITE ERROR Error in writing to disk file. Use 1.44 MB diskette and/or format in the 373XXA.
SERVICE LOG ERROR MESSAGES APPENDIX B Table B-3. GPIB-Related Error Messages (1 of 8) Error Message Description These errors are entered in the Service Log and output as part of the response of OGE/OGL commands for GPIB commands. The list is subdivided into the type of GPIB error: 7204..., 7205..., 7206..., and 7207. 7204 GPIB COMMAND ERROR DESCRIPTIONS Faulty program mnemonic syntax Generated when the program mnemonic found was not one of the currently defined program mnemonics for the 373XXA.
APPENDIX B SERVICE LOG ERROR MESSAGES Table B-3. GPIB-Related Error Messages (2 of 8) Error Message GET received during PM reception Description Generated when the GPIB Command ‘Group Execute Trigger’ is received during the reception of a program message but before its proper termination with the end message. The partial program message up to but not including the ‘Group Execute Trigger’ will be executed.
SERVICE LOG ERROR MESSAGES APPENDIX B Table B-3. GPIB-Related Error Messages (3 of 8) Error Message Description Invalid cal term for calibration type An attempt was made to program a calibration term which does not exist for the current calibration type. Front panel setup not valid An attempt was made to get a front panel setup that did not contain a correct/valid state.
APPENDIX B SERVICE LOG ERROR MESSAGES Table B-3. GPIB-Related Error Messages (4 of 8) Error Message Description Current and cal frequencies different The flat power calibration setup does not match the current setup. Stored data is invalid An attempt was made to reference normalized data when normalized data was invalid. Parameter change not permitted on current state An attempt was made to change a parameter while IF cal was active. It is not expected that this message will ever be seen.
SERVICE LOG ERROR MESSAGES APPENDIX B Table B-3. GPIB-Related Error Messages (5 of 8) Error Message Description Bad filename The supplied filename was bad. The filename can have 8 characters maximum. No extensions. The filename must start with and alpha type character (A thru Z). After that the allowable characters are alpha, numeric (0 thru 9) and underscore (_). Conflict with rotary knob You should not be using the rotary knob and the GPIB at the same time.
APPENDIX B SERVICE LOG ERROR MESSAGES Table B-3. GPIB-Related Error Messages (6 of 8) Error Message Description Floppy disk write protected An attempt was made to write to a write protected floppy disk. Recalled setup or data file corrupt An attempt to recall a setup from internal memory, the GPIB or disk failed due to software revision or hardware mismatch or checksum error.
SERVICE LOG ERROR MESSAGES APPENDIX B Table B-3. GPIB-Related Error Messages (7 of 8) Error Message Description Response after Indefinite Response discarded This error is generated when the 373XXA’s output queue has already received an Arbitrary ASCII response data element and an attempt is made to place another response data element of any kind into the queue. The new response data element is discarded.
APPENDIX B SERVICE LOG ERROR MESSAGES Table B-3. GPIB-Related Error Messages (8 of 8) Error Message Description Unable to store setup An unsuccessful attempt was made to save a front panel setup. Unable to get frequency list An unsuccessful attempt was made to get setup, trace, or tabular datat from the database. Unable to store label An unsuccessful attempt was made to store a label in the database.
SERVICE LOG ERROR MESSAGES APPENDIX B Table B-4.
APPENDIX B SERVICE LOG ERROR MESSAGES Table B-4.
SERVICE LOG ERROR MESSAGES APPENDIX B Table B-4.
Appendix C Connector Maintenance Check Procedures Table of Contents C-1 INTRODUCTION · · · · · · · · · · · · · · · · · · · · · · · · · C-3 C-2 PRECAUTIONS · · · · · · · · Pin Depth Problems · · · · · · · Pin-Depth Tolerance· · · · · · · Avoid Over Torquing Connectors Teflon Tuning Washers · · · · · Avoid Mechanical Shock · · · · Keep Connectors Clean · · · · · Visual Inspection · · · · · · · · C-3 REPAIR/ MAINTENANCE · · · · · · · · · · · · · · · · · · · C-5 · · · · · · · · · · · · · · · · · · · · ·
Appendix C Connector Maintenance Check Procedures C-1 INTRODUCTION This appendix provides general, precautionary information and instructions pertaining to precision connectors. C-2 PRECAUTIONS The following paragraphs are precautionary notes relating to maintenance considerations for precision connectors Pin Depth Problems REFERENCE PLANE REFERENCE PLANE PIN DEPTH (INCHES) PIN DEPTH (INCHES) FEMALE MALE Figure C-1.
PRECAUTIONS Pin-Depth Tolerance APPENDIX C The center pin of a precision connector has a tolerances measured in mils (one mil = 1/1000 inch). The connectors of test devices may not be precision types and they may not have the proper pin-depth. These connectors should be measured before mating to ensure suitability. When gauging pin depth, if the connector being measured indicates out of tolerance in the “+” region of the gauge (Table C-1), the center pin is too long.
APPENDIX C REPAIR/ MAINTENANCE hering to connector interfaces. When not in use, keep the connectors covered. Visual Inspection Precision connectors should be inspected periodically. Check for the following: q q q q C-3 REPAIR/ MAINTENANCE 373XXA MM Bent or broken center pin Damaged threads Other bent or damaged connector parts Dirt or foreign material in connector cavity. ANRITSU recommends that no maintenance other than cleaning be attempted by the customer.
Appendix D Performance Specifications
APPENDIX D PERFORMANCE SPECIFICATIONS Appendix D Performance Specifications SYSTEM PERFORMANCE Frequency Range: RF Models: 37317A 22.5 MHz to 8.6 GHz Microwave Models 37325A 40 MHz to 13.5 GHz 37347A 40 MHz to 20 GHz 37369A 40 MHz to 40 GHz 37397A 40 MHz to 65 GHz Dynamic Range: The following table gives dynamic range in two manners. “Receiver Dynamic Range” is defined as the ratio of the maximum signal level at Port 2 for 0.1 dB compression to the noise floor at Port 2.
PERFORMANCE SPECIFICATIONS Load Match (dB) Reflection Frequency Tracking (dB) Transmission Frequency Tracking (dB) Isolation (dB) >44 >52 ±0.003 ±0.004 >105 >44 >52 ±0.003 ±0.004 >115 >42 >52 ±0.004 ±0.012 >112 >60 >60 ±0.001 ±0.001 >115 Connector Frequency (GHz) GPC-7 0.0225 >52 2.0 >52 18 >52 GPC-7 LRL Calibration 2.0 >60 18 >60 >60 >60 ±0.001 ±0.001 >112 N-Type 0.0225 >46 >36 >46 ±0.004 ±0.004 >105 2.0 >44 >36 >44 ±0.004 ±0.
APPENDIX D PERFORMANCE SPECIFICATIONS other five. Markers can be directed automatically to the minimum or maximum of a data trace. Enhanced Markers: Marker search for a level or bandwidth, displaying an active marker for each channel, and discrete or continuous (interpolated) markers. Marker Sweep: Sweeps upward in frequency between any two markers. Recalibration is not required during the marker sweep. Limit Lines: Either single or segmented limit lines can be displayed.
PERFORMANCE SPECIFICATIONS Ref= 0dBm LOG MAG 5dB/DIV APPENDIX D -7 dBm Ref= 0dBm LOG MAG Available Power Available Power Typical Typical 22.5 MHz 8.
APPENDIX D PERFORMANCE SPECIFICATIONS LEVEL CONTROL RANGE (Without step attenuator) 37317A 37325A 37347A 37369A 37397A Above Reset Power* +10 dB +10 dB +10 dB +20 dB +20 dB Below Reset Power -25 dB -25 dB -25 dB -20 dB -20 dB <47 GHz -12 dB ³47 GHz *Source power above the reset level is allowed but not guaranteed, especially over the full frequency range. ture set by the number of frequency points. A frequency step size of 100 kHz corresponds to 10 ms.
PERFORMANCE SPECIFICATIONS capacitance, load and short inductances, load impedance, and reflection standard offset lengths. Reference Impedance: Modify the reference impedance of the measurement to other than 50 ohms (but not 0). LRL/LRM Calibration Capability: The LRL calibration technique uses the characteristic impedance of a length of transmission line as the calibration standard.
APPENDIX D PERFORMANCE SPECIFICATIONS Throughput Times (ms) without Correction (typical) Data Format 3 Points* 101 Points 401 Points 1601 Points 32 Bit 230 650 1400 3600 64 Bit 230 680 1450 4000 ASCII 235 800 1700 5000 Throughput Times (ms) with Correction (typical) Data Format 3 Points* 101 Points 401 Points 1601 Points 32 Bit 340 1200 2600 7800 64 Bit 350 1200 2700 8300 ASCII 350 1280 3000 9300 * Frequencies taken at 2, 4, and 6 GHz GENERAL 37300A Front Panel Con
PERFORMANCE SPECIFICATIONS analyzing the most critical compression frequencies of a broadband amplifier. CH1 : b2/1 POWER OUT REF = 15.000 dBm 1.000 dB/DIV CW MODE CH3 : S21 FWD TRANS PHASE REF = 5.00° 2.00°/DIV Power Out APPENDIX D response may be used to identify the nature of impedance discontinuities in the device under test. Now, with Phasor Impulse, it is possible to characterize complex impedances on band-limited devices.
APPENDIX D Where kW is two times the number of window terms (for example, four for a two-term window) For a 40 GHz sweep range with 1601 data points, the unaliased range is 40.025 nanoseconds. For a 65 GHz sweep with 1601 data points, the unaliased range is 24.646 nanoseconds. Frequency with Time Gate: Data that has been converted to time domain and selected by the application of gating function may be converted back to the frequency domain.
PERFORMANCE SPECIFICATIONS 3670V50-1, DC to 65 GHz, V connectors, 1 foot long, male/female, two required. 3670V50-2, DC to 65 GHz, V connectors, 2 feet long, male/female. FLEXIBLE TEST PORT CABLES 3671A50-1 GPC-7 Flexible Cables, 25 in. (1 pair). 3671A50-2 GPC-7 Flexible Cable, 38 in. 3671S50-1 3.5mm Flexible Cables, 25 in. (1 pair), male/male. 3671S50-2 3.5mm Flexible Cable, 38 in., male. 3671K50-1 K Connector Flexible Cables, 25 in. (1 pair), male/male. 3671K50-2 K Connector Flexible Cable, 38 in., male.
APPENDIX D PERFORMANCE SPECIFICATIONS Model 37347A (K Connectors) Reflection Measurements: Model 37347A (K Connectors) Transmission Measurements: Reflection Magnitude Uncertainty Transmission Magnitude Uncertainty 37x47A/B/3652/Reflection Only 37x47A/B/3652/Transmission Only 10 0 40 MHz 2 GHz 20 GHz 40 MHz 2 GHz 20 GHz 1 1 .
PERFORMANCE SPECIFICATIONS APPENDIX D Model 37369A (K Connectors) Transmission Measurements: Model 37369A (K Connectors) Reflection Measurements: Transmission Magnitude Uncertainty 37x69A/B/3652/Transmission Only Reflection Magnitude Uncertainty 37x69A/B/3652/Reflection Only 10 10 40 MHz 2 GHz 20 GHz 40 GHz 40 MHz 2 GHz 20 GHz 40 GHz 1 1 .1 -90 .
APPENDIX D PERFORMANCE SPECIFICATIONS Model 37397A (V Connectors) Transmission Measurements: Model 37397A (V Connectors) Reflection Measurements: Reflection Magnitude Uncertainty Transmission Magnitude Uncertainty 37x97A/B/3654B/Reflection Only 37x97A/B/3654B/Transmission Only 10 10 40 MHz 20 GHz 40 GHz 50 GHz 65 GHz 40 MHz 20 GHz 40 GHz 50 GHz 65 GHz 1 1 .1 -40 -35 -30 -25 -20 -15 Device S11 (dB) -10 -5 0 .
Appendix E Performance Verification Software User’s Guide This appendix contains the Model 360X/37XXX Vector Network Analyzer Performance VerificationSoftware User’s Guide. This user’s guide provides technical data and procedures that can aid you in performing maintenance on the 373XXA.
Subject Index
Subject Index Number 37397A Source Lock Signal Path Diagram · · · · · · · · · · · · · · · · · · · · 5-26 37397A Test Signal Path Diagram · · · · · · 5-25 ASSOCIATED INFORMATION IN THIS MANUAL 5-3 Avoid Mechanical Shock · · · · · · · · · · · · C-4 Avoid Over Torquing Connectors · · · · · · · C-4 A B A13 I/O Interface #1 PCB Assembly · · · · · 7-15 A14 I/O Interface #2 PCB Assembly · · · · · 7-15 A15 Graphics Processor PCB Assembly · · · 7-16 A16 Hard Disk PCB Assembly · · · · · · · · 7-16 A17 System Moth
E TO P INDEX E Electro-static discharge procedures · · · · · · 1-9 EQUIPMENT REQUIRED · · · · · · · · · · · 8-3 Error Code DE Lock Failure Troubleshooting 5-14 Error Codes · · · · · · · · · · · · · · · · · · 5-10 Error Messages Disk Related · · · · · · · · · · · · · · · · · B-3 Disk Related Error Messages · · · · · · · · B-3 GPIB Related· · · · · · · · · · · · · · · · · B-3 INTRODUCTION · · · · · · · · · · · · · · B-3 Operational Error Messages· · · · · · · · · B-3 Service Log · · · · · · · · · · · · · ·
INDEX R TO S PERFORMANCE SPECIFICATIONS · · · · · 1-9 Performance Verification Software · · · · · · 1-4 Peripheral Tests· · · · · · · · · · · · · · · · · A-4 PERIPHERALS AND INTERFACES · · 3-6 -3 -9 PERIPHERALS/ INTERFACE · · · · · · · · 5-21 Phase Lock Error Codes (6000 Series) · · · · 5-11 Pin Depth Problems · · · · · · · · · · · · · · · · · · · C-3 Tolerances · · · · · · · · · · · · · · · · · · C-4 Pin-Depth Tolerance · · · · · · · · · · · · · · C-4 Power Amplifier · · · · · · · · · · · · · · · · 8-26
