Errata Title & Document Type: 8568B Spectrum Analyzer Installation and Verification Manual Manual Part Number: 08568-90119 Revision Date: September 1993 HP References in this Manual This manual may contain references to HP or Hewlett-Packard. Please note that HewlettPackard's former test and measurement, semiconductor products and chemical analysis businesses are now part of Agilent Technologies. We have made no changes to this manual copy. The HP XXXX referred to in this document is now the Agilent XXXX.
Installation and Verification Manual HP 8568B Spectrum Analyzer Includes Option 001, Option 400, Option 462, and Option 857 HP Part No.
Notice. The information contained in this document is subject to change without notice. Hewlett-Packard makes no warranty of any kind with regard to this material, including but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.
Certification Hewlett-Packard Company certifies that this product met its published specifications at the time of shipment from the factory. Hewlett-Packard further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology, to the extent allowed by the Institute’s calibration facility, and to the calibration facilities of other International Standards Organization members.
Assistance Product wmintenance agreements and other customer assistance agreements are available for Hewlett-Rzckard products. Pbr any assistance, contact pour nearest Hewlett-Fbckard Sales and Service Ome. Safety Notes Caution Caution denotes a hazard. It calls attention to a procedure that, if not correctly performed or adhered to, could result in damage to or destruction of the instrument. Do not proceed beyond a caution sign until the indicated conditions are fully understood and met.
General Safety Considerations Warning Before this instrunwnt is switched on, make sure it has been properly grounded through the protective conductor of the ac power cable to a socket outlet provided with protective earth contact. Any interruption of the protective (grounding) conductor, inside or outside the instrument, or disconnection of the protective earth terminal can result in personal injury. Warning There are many points in the instrument which can, if contacted, cause personal injury.
How to Use This Guide This guide uses the following conventions: HP 8568B Documentation Description Front-Panel Key] Screen Text This represents a key physically located on the instrument. This indicates text displayed on the instrument’s screen. Included with the HP Model 8568B spectrum analyzer are manuals: The Installation and Verification, the Operating and Programming Manual, and the Performance Tests and Adjustments Manual.
Contents 1. General Information What You’ll Find in This Chapter . . . Introducing the HP 8568B . . . . . . . Safety . . . . . . . . . . . . . . . Accessories Supplied . . . . . . . . Accessories Available . . . . . . . . Options . . . . . . . . . . . . . . Instruments Covered by This Manual Serial Numbers . . . . . . . . . . Calibration Cycle . . . . . . . . . . HP-IB Address Selection . . . . . . Bench Operation . . . . . . . . . . Electrostatic Discharge Information . . Static-Safe Accessories . . . . .
3. Contents-2 Specifications Introduction . . . . . . . . . . . . . . . . . . . . . Frequency . . . . . . . . . . . . . . . . . . . . . . Measurement Range . . . . . . . . . . . . . . . . Displayed Values . . . . . . . . . . . . . . . . . . Center Frequency . . . . . . . . . . . . . . . . . Range . . . . . . . . . . . . . . . . . . . . . . Readout Accuracy . . . . . . . . . . . . . . . . Frequency Span . . . . . . . . . . . . . . . . . . Range . . . . . . . . . . . . . . . . . . . . . . Full Span . . . .
Humidity . . . . . . . . . . . . . . . . . Operation . . . . . . . . . . . . . . . Storage . . . . . . . . . . . . . . . . EM1 . . . . . . . . . . . . . . . . . . . X-Rays . . . . . . . . . . . . . . . . . . IF Section Serial Prefix 3004A and above . IF Section Serial Prefix 3001A and below Warm-Up Time . . . . . . . . . . . . . . Frequency Reference . . . . . . . . . . Operation . . . . . . . . . . . . . . . Weight . . . . . . . . . . . . . . . . . . Dimensions . . . . . . . . . . . . . . . . . . . . . .
5. Operation Verification What You’ll Find in This Chapter . . . . . . Test System Configuration . . . . . . . . . . Equipment Connections . . . . . . . . . . . Program Loading . . . . . . . . . . . . . . Program Operation . . . . . . . . . . . . . HP-IB Addresses . . . . . . . . . . . . . . Error Messages . . . . . . . . . . . . . . . Test Descriptions . . . . . . . . . . . . . . 1. Input Attenuator Switching Uncertainty 2. IF Gain Uncertainty . . . . . . . . . . 3. Scale Fidelity (Log) . . . . . . . . . .
Figures l-l. HP 8568B with Accessories Supplied . . . . . . . . 1-2. AC Power Cables Available . . . . . . . . . . . . l-3. Typical Serial Number Label . . . . . . . . . . . 1-4. Static-Safe Workstation . . . . . . . . . . . . . . 1-5. Display Bezel Screws . . . . . . . . . . . . . . . l-6. Removing the Bottom Cover . . . . . . . . . . . 1-7. Location of Al5 Controller Assembly . . . . . . . l-8. Location of Battery on Al5 Controller Assembly . . 1-9. Factory Packaging Materials for Each Section . . . .
‘Ifibles 1- 1. Static-Safe Accessories . . . . . . . . . l-2. Factory Packaging Materials . . . . . . . l-3. Hewlett-Packard Sales and Service Offices 2-l. Decimal and Binary Address Codes . . . 5-l. Tests Performed . . . . . . . . . . . . 5-2. Tests Not Performed . . . . . . . . . . 5-3. Equipment Summary . . . . . . . . . . 5-4. HP-IB Addresses . . . . . . . . . . . . Contents-6 ...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 General Information What You’ll Find in This Chapter This chapter introduces you to the HP 8568B spectrum analyzer and its options and accessories. Refer to Chapter 2 for information on inspecting and installing the HP 8568B. Refer to Chapter 3 and Chapter 4 for a complete listing of instrument specifications and characteristics. Refer to Chapter 5 for Operation Verification. Introducing the HP 8568B . . . . . . . . . . . . . . . . . . . . . . . . . . . . l-2 Safety . . . . . . . . . . . . . . . . . . .
Introducing the HP 8568B The HP 8568B spectrum analyzer is capable of measuring signals from -135 dBm to +30 dBm over a frequency range of 100 Hz to 1500 MHz. The HP 8568B is a complete, self-contained instrument that requires only an external ac power source for operation. A set of ac power cables, suitable for use in the country to which the instrument is originally shipped, are included with the instrument.
FRONT VIEW I F - D i s p l a y Sect ion RF S e c t i o n REAR VIEW I F - D i s p l a y Sect RF ion Sect ion Figure l-l.
PLUG TYPE * * PLUG DESCRIPTION Hy;A;T NUMBER 250V S t r a i g h t * BS1363A 8120-1351 8 1 2 0 - 1 7 0 3 90’ CABLE LENGTH a.4 ( I N C H E S ) 229 (90) 229 (90) CABLE COLOR Mint Gray M i n t Gray FOR USE IN COUNTRY G r e a t Britoln, Cyprus.
Accessories Available A number of accessories are available from Hewlett-Packard to help you configure your HP 8568B for your specific needs. Preamplifiers The HP 8447D preamplifier provides a minimum of 26 dB gain from 100 kHz to 1.3 GHz to enhance measurements of very low-level signals. Close-Field Probes The HP 11940A and HP 11941A Close-Field Probes are small, hand-held, electromagneticfield sensors. The probes can be used to make repeatable, absolute, magnetic-field measurements.
Options 1-6 General Information HP 85685A RF Preselector The HP 85685A RF Preselector can be used with an HP 8568B to form a multi-purpose RF test receiver. It improves spectrum analyzer measurement sensitivity while providing overload protection from out-of-band signals. This enables low-level signals to be monitored in the presence of high-level ambients. Its frequency range is 20 Hz to 2 GHz.
EM1 and general-purpose measurements. Option 462 instruments with HP 85662A (top box) serial prefixes below 3341A were compatable with MIL-STD 462A/B/C (impulse bandwidth). Instruments Covered by This Manual Option 857 The HP 8568B Option 857 is used in EMC receiver applications. This option provides the cumulative log fidelity and absolute amplitude performance necessary for EMC receivers to meet their system specs. Option 908 Rack Mount Flange kit (to mount without handles).
The letter identifies the country in which the instrument was manufactured. The five-digit suffix is a sequential number and is different for each instrument. Whenever you list the serial number or refer to it in obtaining information about your instrument section, be sure to use the complete number, including the full prefix and the suffix. PREFIX COUNTRY OF ORIGIN SUFFIX ER 2730A00427 Figure 1-3.
Calibration Cycle To ensure that the HP 8568B meets the specifications listed in Chapter 3, the operation verification listed in Chapter 5 should be performed every 6 months. HP-IB Address Selection The instrument is shipped with the HP-IB address preset to 18 (ASCII 2R). The instrument stores this address in internal RAM memory which is maintained by a lithium battery in STANDBY and when line power is removed.
Electrostatic Discharge Information Electrostatic discharge (ESD) can damage or destroy electronic components. Therefore, observe the following precautions: n Be sure that all instruments are properly earth-grounded to prevent buildup of static charge. n Before connecting any coaxial cable to an instrument connector for the first time each day, momentarily short the center and outer conductors of the cable together.
Static-Safe Accessories able l-l. Static-Safe Accessories HP Fart Number Description Order the following through any Hewlett-Packard Sales and Service Office 9300-0797 Set includes: 3M static control mat 0.6 m x 1.2 m (2 ft x 4 ft) and 4.6 cm (15 ft) ground wire. (The wrist-strap and wrist-strap cord are not included. They must be ordered separately.) 9300-0980 Wrist-strap cord 1.
Routine Maintenance Cleaning the Display The inside surface of the glass CRT shield is coated with a thin metallic film that can be easily damaged. To clean the glass CRT shield, use thin-film cleaner (HP part number 8500-2163) and a lint-free cloth. To clean the inside surface of the display glass, remove the glass CRT shield using the following procedure: 1. Disconnect the ac line power from the instrument sections. 2.
Cleaning the RF Section’s Fan Filter The fan on the RF section has a air filter that should be regularly inspected and cleaned. To clean the air filter perform the following: 1. Disconnect the ac line power from the RF section. 2. Remove the four screws securing the filter cover to the fan on the RF section. Remove the filter. 3. Clean the filter using a mild soap and water. Dry the filter thoroughly. If damaged, replace with a new filter (HP part number 85660-00049). 4. Replace the filter and its cover.
3. Using a screw driver, remove the two bottom RF section rear panel bumpers. See callouts 1 in Figure l-6. TOP DOWN Figure 1-6. Removing the Bottom Cover 4. Back out screw 2 (Figure l-6) causing the cover to unseat from the front frame. When the cover is clear of the front frame, lift the cover up to remove it.
5. Remove the cover from the Al5 controller assembly. See Figure l-7. Al5 CONTROLLER ASSEMBLY Figure l-7.
6. Remove the Al5 controller assembly. Locate the battery on the Al5 assembly. Figure l-8 shows the location of the battery. B a t t e r y (A15BTl) Figure 1-8. Location of Battery on Al5 Controller Assembly 7. Replace the battery with a new one (HP part number 1420-0331). Be sure to install the battery with the polarity shown in Figure l-8. 8. Replace the Al5 controller assembly. 9. Reconnect the power cables to the IF and RF sections. 10.
13. Set the LINE switch to STANDBY and then to ON. The HP 8568B should power up normally, without any flags displayed on the CRT. 14. Set the LINE switch to STANDBY and remove the power cable from the rear of the RF section. 15. Install the controller cover, 16. Replace the RF section bottom cover and the two rear feet. 17. Place the HP 8568B top side up and reconnect the power cable to the RF section. 18. Set the LINE switch to ON and allow a 2-hour warm-up. 19.
Ordering Information Parts can be ordered from any Hewlett-Packard Sales and Service Office. Refer to Table 1-3 for a listing of sales and service offices. To order a part or assembly, quote the Hewlett-Packard part number, indicate the quantity required, and address the order to the nearest Hewlett-Packard Office. To order a part that is not listed in the replaceable parts table, include the instrument model number, the description and function of the part, and the number of parts required.
Returning the Instrument for Service The instrument may be shipped in environments within the following limits: Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 “C to + 75 “C Humidity . . . . . . . . . . . . . . . . . . . . . 5% to 90% at 0 “C to 40 “C Altitude . . . . . . . . . . . . . . . . Up to 15,240 meters (50,000 feet) The instrument should be protected from temperature extremes which may cause condensation within the instrument.
(2 PLACES) mounted for shipment. Figure l-9. Factory Packaging Materials for Each Section ‘Ihble 1-2.
Other Packaging Caution Note Instrument damage can result from using packaging materials other than those specified. Never use styrene pellets as packaging materials. They do not adequately cushion the instrument or prevent it from shifting in the carton. They cause instrument damage by generating static electricity. To protect the front panel, the front handles should be attached to each instrument section before shipping.
Sales and Service Offices 1-22 General Information Hewlett-Packard Sales and Service Offices provide worldwide for Hewlett-Packard products. To obtain servicing information order replacement parts, contact the nearest Hewlett-Packard and Service Office listed in Able l-3. In any correspondence, provide essential information, which includes model numbers, numbers, or assembly part numbers.
‘Ihble 1-3. Hewlett-Packard Sales and Service Offices US FIELD OPERATIONS HEADQUARTERS Hewlett-Packard Company 19320 Pruneridge Avenue Cupertino, CA 95014, USA (800) 752-0900 EUROPEAN OPERATIONS HEADQUARTERS Hewlett-Packard S.A. 150, Route du Nant-d’Avri1 12 17 Meyrin 2/Geneva Switzerland (41 22) 780.8111 California Hewlett-Packard Co. France 1421 South Manhattan Ave.
2 Installation What You’ll Find in This Chapter This chapter describes the process of getting the HP 8568B spectrum analyzer ready to use. The process includes initial inspection and installing the unit. Before installing the HP 8568B, be sure to read all the warnings, cautions, and notes listed in “Safety” below. 1 If you are not installing the instrument in a rack, refer to “To Install Standard Instruments” in this chapter.
2.2 Installation Warning F’ailure to ground the instrument properly can result in personal injury. Before turning on the HP 8568B, you must connect its protective earth terminals to the protective conductor of the main power cable. Insert the main power cable plug only into a socket outlet that has a protective earth contact. DO NOT defeat the earth-grounding protection by using an extension cable, power cable, or autotransformer without a protective ground conductor.
Preparation for Use Initial Inspection Inspect the shipping container for damage. If the shipping container or cushioning material is damaged, keep it until you have verified that the contents are complete and you have tested the instrument mechanically and electrically. Contents of the shipment are shown in Figure l-l. If the contents are incomplete or if the instrument does not pass the operation verification tests (procedures are provided in Chapter 5), notify the nearest Hewlett-Packard office.
To Install Standard Instruments 1. Place the RF section right-side up on a level work surface. 2. Place the IF-Display section on top of the RF section, offset far enough forward to allow the RF section hooks to engage the IF-Display section frame when slid back. Slide the IF-Display section back until the RF section hooks catch the bottom of the IF-Display section. 3. Line up the rear-panel lock feet, and tighten the thumb screws on both lock feet. 4.
Line Voltage Setting Card Fuse Figure 2-2. Voltage Selector Board and Fuse 8. On each power-line module, check the voltage selector card for the proper ac line voltage. The card’s voltage setting should be visible on the card. See Figure 2-2. If you need to select a different ac line voltage setting, perform the following: a. Use needle-nose pliers to pull out the voltage-selector card. Rotate the card so that the voltage label corresponding to the actual line voltage will appear in the module window.
9. Check the fuse to make sure it is of the correct rating and type for the ac line voltage selected. Fuse ratings for different line voltages are indicated in the following table. ac Line Voltage 100/120 220/240 IF-Display Section RF Section 1 2 amperes FAST BLO 2 amperes FAST BLO HP nart number 2110-0002 HP Dart number 2110-0002 1 ampere SLOW BLO 1 amperes SLOW BLO HP part number 2110-0007 HP part number 2110-0007 10.
To Install Option 908 and 913 Instruments Option 908 contain the necessary hardware to mount the HP 8568B without handles in a rack of 482.6 mm (19 in) spacing. Option 913 mounts the HP 8568B with handles. 1. Remove the front-handle trim from each side of the RF and IF-Display sections. See callout 1 in Figure 2-3. Figure 2-3. Removing the Handles and Trim 2. Remove the three screws securing each handle, and remove the handles. See callouts 2 and 3 in Figure 2-3.
3. The information-card tray located on the bottom of the RF-Display section requires a space of approximately 2 cm below the instrument when rack mounting. See callout 1 in Figure 2-4. (No filler strip is provided.) If you wish to remove the information-card tray, remove the feet and tilt stands. See callouts 2 and 3 in Figure 2-4. Figure 2-4.
4. On each instrument section, attach the rack mount flange (and front handles for Option 913) using the three M4x0.7~16 pan-head screws provided in the kit. See Figure 2-5. RACK MOUNT Figure 2-5. Attach the Rack Mount Flanges 5. Determine the ac line voltage to be used.
6. On each instrument section, slide open the power module’s fuse door (located on the rear panel). See Figure 2-6. Push the fuse-pull lever to the left. Remove the fuse. Note Although Figure 2-6 shows the two instrument sections connected together, they will be mounted separately in the rack. Line Voltage Setting Card Fuse Figure 2-6. Voltage Selector Board and Fuse 7. On each power-line module, check the voltage selector card for the proper ac line voltage.
8. Check the fuse to make sure it is of the correct rating and type for the ac line voltage selected. Fuse ratings for different line voltages are indicated in the following table. ac Line Voltage 100/120 220/240 IF-Display Section RF Section 2 amperes FAST BLO 2 amperes FAST BLO HP part number 2110-0002 HP part number 2110-0002 1 ampere SLOW BLO 1 amperes SLOW BLO HP part number 2 110-0007 HP part number 2 110-0007 9.
13. Connect the ac line power cords. 14. If the HP 8568B will be remotely controlled, refer to “To Set the HP-IB Address” in this chapter. 15. When you turn your instrument on for the first time, you should perform the verification tests in Chapter 5. Refer to the HP8568B Operation and Programming Manual for instructions on using the instrument. Cables W37 and W38 are removed for connection of the IF and VIDEO ports to the HP 85650A Quasi-Peak adapter.
To Install Option 010 Instruments Option 010 mounts the HP 8568B on slides in a rack of 482.6 mm (19 in) spacing. (Option 010 also contains adapters for mounting in non-HP racks.) 1. Remove the strap handle on the IF-Display section’s left side panel. 2. Remove the right-rear lock foot, and the right-rear top foot from the IF-Display section. Slide the right-side cover off to the rear. Install the right-side cover included in the kit, and replace the rear feet. 3.
5. The information-card tray located on the bottom of the RF-Display section requires a space of approximately 2 cm below the instrument when rack mounting. See callout 1 in Figure 2-9. (No filler strip is provided.) If you wish to remove the information-card tray, remove the feet and tilt stands. See callouts 2 and 3 in Figure 2-9. I Figure 2-9. Removing the Information-Card Tray 6. Place the RF section right side up on a level work surface. 7.
, .,@ .,p “./p , ,..’ P Figure 2-10. Attaching the Rack Handles and Flanges 10. Connect cable W31 between IF-Display section 52 and RF section J6. See Figure 2-l 1. 11. Connect cable W30 between IF-Display section Jl and RF section Jl. w30 w31 w37 Jl J4 W38 J5 Figure 2-l 1.
12. Determine the ac line voltage to be used. 13. On each instrument section, slide open the power module’s fuse door (located on the rear panel). See Figure 2-12. Push the fuse-pull lever to the left. Remove the fuse. Line Voltage Setting Card Fuse Figure 2-12. Voltage Selector Board and Fuse 14. On each power-line module, check the voltage selector card for the proper ac line voltage. The card’s voltage setting should be visible on the card. See Figure 2-11.
15. Check the fuse to make sure it is of the correct rating and type for the ac line voltage selected. Fuse ratings for different line voltages are indicated in the following table. ac Line Voltage 100/120 220/240 IF-Display Section RF Section 2 amperes FAST BLO 2 amperes FAST BLO HP part number 2110-0002 HP part number 2110-0002 1 ampere SLOW BLO 1 amperes SLOW BLO HP part number 2110-0007 HP part number 2110-0007 16.
c. Expand the outer slide mounts to their full length. Mount the instrument onto the system cabinet by bolting the outer slide mount to the inner-member bracket on the instrument, using three M5x0.8~12 flat-head screws per side. Note If any binding is encountered in the slides after mounting, it will be necessary to slightly move the Unistrut nuts. While supporting the instrument, loosen one of the Unistrut nuts. Adjust the slides slightly until they operate freely. Retighten the Unistrut nut. 19.
b. Using hole pattern “B,” attach one adapter bracket to the rear of each outer slide mount, using two M5x0.8~12 pan-head screws and nuts per bracket. c. Bolt an outer slide mount to each side of the system rack cabinet using M5x0.8~12 pan-head screws. Use the bar nuts provided in the kit if the rack mounting strips have through-holes. Note If any binding is encountered in the slides after mounting, it will be necessary to slightly move the adapter brackets.
To Set the HP-IB Address The HP-IB address is used in remote programming to identify the instrument. The decimal address is preset at the factory to 18 (ASCII 2R). Addresses may be decimal 0 through 30. The HP-IB address can be changed manually from the instrument’s front panel, remotely via the HP-IB bus, or by setting the instrument’s internal address switch. The internal address switch is comprised of five switches located on the Al5 controller assembly in the RF section.
1. Disconnect the ac line cord from the RF section. 2. Using a screw driver, remove the two RF-section rear panel bumpers. See callout 1 in Figure 2-15. TOP DOWN Figure 2-15. Removing the Bottom Cover 3. Back out screw 2 (see Figure 2-15) and the cover unseats from the front frame. When the cover is clear of the rear frame, remove the cover by lifting up. 4. Remove the cover from the Al5 controller assembly. See Figure 2-16 to locate the assembly.
Al5 CONTROLLER ASSEMBLY Locat i o n of HP-IB Switch) Figure 2-16. Location of Al5 Controller Assembly 5. Locate the address switch A15SWl as shown in Figure 2-16 and Figure 2-17. Change the switch’s setting according to the information given below. The switch comprises six segments, Al through A6. Al must always be set to logic 1. Each of the remaining five segments, A2 through A6, corresponds to one of the digits of a 5-digit binary equivalent of the address. See Figure 2-17.
Note Observe that although 2’ is the far-right digit in Table 2-1, 2’ is represented by the far-left segment of the address switch. 20 21 22 23 24 u = Logic 1 = Logic 0 4 \A6 A5 A4 A3 A2, Al Figure 2-17.
1 = Logic 1 = Logic 0 Q \A6 A5 A4 A3 A2, A l ( A l w a y s s e t at l o g i c 1 ) v HP-IB ADDRESS Figure 2-18. Address Switch Set to 4 6. Replace the cover on the Al5 controller assembly. 7. Replace the RF section’s bottom cover.
‘Ihble 2-l.
3 Specifications Introduction Unless noted, all specifications are for AUTOCOUPLED FUNCTION operation. Where specifications are subject to minimization with the error-correction routine, corrected limits are given unless noted. Nominal values provide useful, but nonwarranted, information about functional performance. Frequency Measurement Range 100 Hz to 1500 MHz through two RF inputs: 100 Hz to 1500 MHz dc coupled, and 100 kHz to 1500 MHz ac coupled.
Readout Accuracy Span 2100 Hz *(2% of frequency span + frequency reference error x tune frequency + 10 Hz) in AUTO resolution bandwidth after adjusting FREQ ZERO at stabilized temperature, and using the error-correction function, [SHIFT] [FREQUENCY SPAN] (KSW). Add 30% of the resolution bandwidth setting if error correction is not used.
Frequency Count Displays the frequency of the signal on whose response the marker is positioned. The marker must be positioned at least 20 dB above the noise or the intersection of the signal with an adjacent signal, and more than four divisions up from the bottom of the display.
Resolution Bandwidth (Option 462 6 dB Bandwidths) 6 dB bandwidths of 10 Hz to 3 MHz in 1, 3, 10 sequence. Bandwidth may be selected manually or coupled to frequency span (AUTO mode). 6 dB Bandwidth Accuracy* Bandwidths Accuracy 3 MHz f20% 30 Hz to 1 MHz flO% 10 Hz +50, -0% *30 kHz and 100 kHz bandwidth accuracy figures only applicable 590% relative humidity 540’C.
Stability Residual FM <3 Hz peak-to-peak in 110 seconds, span ~100 kHz, resolution bandwidth 530 Hz, video bandwidth 530 Hz. Spectral Purity Noise Sidebands Offset from Carrier 300 Hz 3 kHz 30 kHz Sideband Level (1 Hz BW) -90 dBc/Hz - 100 dBc/Hz - 107 dBc/Hz Power-Line-Related Sidebands >85 dB below the peak of a CW signal.
Amplitude Measurement Range Measurement range is the total amplitude range over which the analyzer can measure signal responses. The low value is determined by sensitivity (10 Hz resolution bandwidth and 0 dB input attenuation), and the high value by damage level. Amplitude Measurement Range - 135 dBm to + 30 dBm Displayed Values Scale Over a lo-division CRT vertical axis with reference level (0 dB) at the top graticule line.
Reference Lines Accuracy Equals the sum of reference level accuracy plus the scale fidelity between the reference level and the reference line level. Dynamic Range Spurious Responses For total signal power of c-40 dBm at the input mixer of the analyzer, all image and out-of-band mixing responses, harmonic and intermodulation distortion products are >75 dB below the total signal power for input signals 10 MHz to 1500 MHz, >70 dB below the total signal power with input signals ~10 MHz.
Residual Responses * Frequency Range 500 Hz to 1500 MHz Residual Responses c-105 dBm *With 0 dB input attenuation and no input signal. Gain Compression ~0.5 dB for signal levels s-10 dBm at the input mixer. Displayed Average Noise Level (Sensitivity) Average Noise * Tuning Range 500 Hz to 51 MHz Level c-112 dBm >l MHz to 1500 MHz c-135 dBm *0 dB input attenuation, 10 Hz resolution bandwidth, and 1 Hz video bandwidth.
‘lhble Footnotes l Requires executing the error-correction function ([GiK] SPAN )) after stabilization at new ambient temperature. Otherwise, typical amplitude drift may be ho.05 dB/‘C (at -10 dBm reference level, 10 dB input attenuation and 1 MHz resolution bandwidth.) IFREQUENCY ’ COUPLED FUNCTION not required as long as MEAS UNCAL message is not displayed. 3 For IF-Display sections with serial prefixes 3014A and above, specification applies over entire display.
Marker The marker is a bright dot placed upon the display trace and is positioned horizontally by the DATA controls. The marker amplitude and frequency are displayed continuously. Frequency Accuracy Accuracy Marker Normal A (Delta) Same as center frequency accuracy + frequency span accuracy between marker and center frequency. Same as frequency span accuracy. In FREQ COUNT mode, twice the frequency count uncertainty plus drift during the period of the sweep.
Inputs INPUT #l BNC female, front panel, fused Zonnector 100 Hz to 1500 MHz, dc coupled ?requency Xange Maximum Input Continuous power: +30 dBm from 50 D source. ac Mixer protected by diode limiter. Pulse power: 5100 W, 10 ps pulse width with 250 dB input attenuation (50 dBm peak power to input mixer). < 100 mA damage level dc INPUT #2 Type N female, front panel Zonnector 100 kHz to 1500 MHz, ac coupled Frequency Xange Maximum Input Continuous power: + 30 dBm from 50 0 source.
Outputs CAL OUTPUT Connector ImDedance Frequency ] BNC female, front panel I 50 D nominal 20 MHz *(frequency reference error x 20 MHz) I -10 dBm *0.3 dB 1 Amplitude 1ST LO OUTPUT Connector Impedance Frequency Amplitude Maximum Safe Reverse Level Options 75 B Input Impedance, Option 001 BNC female, rear panel 50 62 nominal 2.0 to 3.7 GHz >+4 dBm +27 dBm (l/2 W) total power into 50 Q All specifications are identical to the standard HP 8568B, except as noted below.
400 Hz Power Line Frequency Operation, Option 400 Power Line Related Sidebands >75 dB below peak of a CW signal. Residual Responses * I Frequency Range I 500 Hz to 52.5 kHz >2.5 kHz to 1500 MHz Residual Response I c-95 dBm I <-lo5 dBi7 *With 0 dB input attenuation and no input signal.
General HP-IB Interface Functions Environmental SHl, AHl, T6, L4, SRI, RLl, PPO, DCl, DTl, Cl, C2, C3, C28, E2 Temperature Operation: Storage: Note 0 “C to 55 “C -40 “C to 75 “C Increased internal temperatures may result if the rear-panel air filters are not cleaned regularly. Altitude Operation: Storage: Power Requirements Humidity 14,572 m (15,000 feet) 115,240 m (50,000 feet) 50 to 60 Hz; 100, 120, 220, or 240 volts (+5%, -10%); approximately 450 VA (40 VA in standby).
Radiation emitted by this instrument is less than 0.5 mR/hr at a distance of five (5) centimeters from the surface of the cathode-ray tube. The x-ray radiation primarily depends on the characteristics of the cathode-ray tube and its associated low-voltage and high-voltage circuitry. To ensure safe operation of the instrument, adjust both the low-voltage and high-voltage power supplies as outlined in the Performance Tests and Adjustments manual (if applicable).
Warm-Up Time F’requency Reference From a cold start (no line power connected to HP 8568B), the following conditions apply: n n n Note ~72 hours to meet aging rate specification after <24-hour off period. ~30 days to meet aging rate specification after indefinite off period. ~30 minutes to be within 1 x lo-” of 24-hour warm-up frequency (at 25 “C). If the above conditions do not apply, refer to the specifications below under “Operation.
Dimensions ( A l l o w 1 0 0 mm, 4 i n c h clearance at rear panel for interconnect cables.) TOP 4 5 7 . 2 nm ( 1 8 i n ) p637.5 t - 6 3 7 . 5 rr m m -- ( (2255. .11 in)+ in)+ Figure 3-1. Instrument Dimensions with Handles (Allow 100 rrm, 4 inch clearance at rear panel for interconnect cables.) 4 2 5 . 5 rrn- ( 1 6 7 5 i n ) TOP 609.6 MT (24 in) Figure 3-2.
Characteristics Note Supplemental characteristics are intended to provide information useful in applying the instrument by giving typical, nonwarranted, performance parameters. Frequency Resolution 0 10 a 73 20 8 z 30 E ; 4 c n w 5C 2 k 1 6C 4 70 80 10 Hz 100 Hz 1 kHz 1 0 0 kHz 1 0 kHr FREQUENCY 1 MHz 1 0 MHz 100 MHz Figure 4-l.
Stability Drift Because the analyzer frequency is corrected on retrace, drift occurs only during the period of one sweep. This drift is in addition to frequency reference error due to aging. Drift (per Minute of Sweep Time) * Frequency Span 100 kHz to 5 1 MHz I >l MHz I
Amplitude Average Noise Level M a x i m u m I n p u t L e v e l +30 dBm ( 1 w a t t ) -50 -60 E 7J -70 m -80 m 3 + - 9 0 .F-loo -110 -120 -130 -140 -150 1 OHz IMHz IOMHz IOOMHz 1GHz 1 OGHz 1 kHz 1 OkHz IOOkHz 1 OOHz Frequency Offset From Local Oscillator Feedthrough ( - 1 5 dBm T y p i c a l L O L e v e l ) Figure 4-3. Typical Sensitivity vs.
Residual Responses Residual responses are signals generated by the analyzer independent of input signals. Residual Responses * Frequency Range Residual Responses 100 Hz to 500 Hz c-105 dBm* * 500 Hz to 1500 MHz c-105 dBm * With 0 dB input attenuation and no input signal. * * Except for line-related residuals and LO feedthrough skirt (in the 100 Hz to 110 Hz range), typically c-100 dBm.
Inputs RF INPUTS SWR* Input #l Input #2 *>lO dB input attenuation Tune Frequency 100 Hz to 500 MHz to 500 MHz 1500 MHz <1.5:1 <2.0: 1 <1.5:1 <1.5:1 Isolation Typically >85 dB isolation between inputs. LO Emission Typically c-75 dBm (0 dB input attenuation) VIDEO INP Connector Impedance Amplitude BNC female, rear panel 139 Q oto2v Connector Impedance Frequency Amplitude BNC female, rear panel 50 n 21.
FREQ REFERENCE Connector Impedence Frequency Amplitude Phase Noise and Spurious Signals BNC female. rear Dane1 50 Q, nominal 10 MHz f50 Hz 0 dBm to + 10 dBm Analyzer performance will be degraded unless frequency reference phase-noise and spurious signals are 5140 dBc/Hz, referred to 10 MHz at a 100 Hz to 10 kHz offset. outputs Display Outputs X, Y, and Z outputs for auxiliary CRT displays. Compatible with HP 1300 series displays.
VIDEO Detected video output (before A-D conversion) proportional to vertical deflection of the CRT trace. Connector Amplitude Impedance BNC female, rear panel 100 mV/div from 0 to 1 V 5475 62 nominal , PENLIFT I Connector BNC female, rear panel 0 V from 10 Q source + 15 V from 10 kfl source 2 1.4 MHz IF OUTPUT Connector BNC female, rear panel ImDedance 50 0 nominal Frequency 2 1.4 MHz Amplitude -20 dBm for a signal at the reference level. Controlled by the input attenuator and IF step gain positions.
IF OUT Cl -11 dBm nominal with 10 dB input PROBE POWER (front panel) + 15 Vdc, -12.6 Vdc Voltage 150 mA maximum. each Current Probe Compatibility HP 1121A (use only with with Input #2) HP 1120A HP 85024A HP 10855A Preamnlifier General Acoustic Noise Emission/ Geraeuschemession This instrument is in conformance with the “German Regulation on Noise Declaration for Machines. ” (Laermangabe nach der Maschinenlaermrerordnung -3. GSGV Deutschland.) * Test was conducted per IS0 7779 and DIN 45635 teil 1.
Function Descriptions Sweep Free Run Line Video External Continuous Single Sweep Time Range Span = 0 HZ Characteristics Sweep triggered by internal source. Sweep triggered by power line frequency. Sweep triggered by detected waveform of input signal at an adjustable level; signal must be 20.5 div peak-to-peak. For sweeps of 10 ms and less (zero span) the signal must have >40 Hz rate. [W) (VIDEO_) (KSy) allows any envelope rate, but display will blank between triggers when sweep is <20 ms.
Cathode Ray Tube Type: Post-deflection accelerator, aluminized P31 phosphor, electrostatic focus and deflection. Viewing Area: Approximately 9.6 cm vertically by 11 .O cm horizontally (3.8 in x 4.7 in). The CRT is completely turned off with (GE) (CLEAR WRITE) (trace B, KSg) and on with [SHIFT) [HOLD] (trace B, KSh) to avoid unnecessary aging of the CRT during long-term unattended operation of the analyzer.
5 Operation Verification What You’ll Find in This Chapter This chapter describes the HP 8568A/B Operation Verification software and how to use it to verify spectrum analyzer operation. Test System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . Equipment Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Program Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Program Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .
If an HP 8568A/B passes all Operation Verification tests, be assured that the spectrum analyzer is performing within the specifications indicated in each test. These specifications are representative of the specifications listed in Chapter 3, “Specifications.” If a test does not pass then the related manual performance test needs to be run. Related manual performance tests are located in the HP 8568A/B Performance lbsts and Adjustments Manual (HP part number 08568-90105).
‘lhble 5-1. Tests Performed Test Number and Name 1. Input Attenuator Switching Check 2. IF Gain Uncertainty Equipment Required HP 3335A HP 3335A 3. Scale Fidelity (Log) HP 3335A 4. Scale Fidelity (Linear) HP 3335A 5. Log Scale Switching HP 3335A 6. Resolution Bandwidths none 7. Impulse and Resolution Bandwidths (Option 462 Impulse Bandwidth)t 8. Line-Related Sidebands HP 8112A or HP 8116A HP 3335A none 9. Residual FM none 10. RF Gain Uncertainty none 11. Sweep Time Accuracy none 12.
‘Ihble 5-2. Tests Not Performed Center Frequency Readout Accuracy Test Spurious Responses Test Fast Sweeptime Accuracy Test 1ST LO Output Amplitude Responses Test Frequency Reference Error Test ‘Ikble 5-3.
Test System Configuration The HP 8568A/B Operation Verification program requires an HP 9000 Series 200 or HP 9000 Series 300 computer with HP BASIC 2.0 and Extensions 2.1 or BASIC 3.0 or higher. An HP 362 or HP 382 computer can also be used and requires BASIC 6.2 or higher. The program operates on either a single or dual HP-IB computer system. For a dual bus system it is also necessary to have an HP 98624A HP-IB Interface to connect the HP 8568AB to the computer separately from the test equipment.
BUS to MTS System Select Code of 7. B U S t o U n i t U n d e r T e s t (HP8568B) Select Code of 8. Figure 5-l. Dual Bus (MTS) System Connection o MTS System Figure 5-2.
Program Loading To load and run the HP 8568A/B Operation Verification program, one of the following HP BASIC language systems is required: w BASIC 2.0 with Extensions 2.1 n BASIC 3.0 or higher including the following binaries: q MAT 0 IO q GRAPH q HPIB q ERR (not required but recommended) w BASIC 6.2 or higher must be installed in the HP 362 or HP 382. For additional computer configuration instructions, refer to the Installation Reference manual included with the HP BASIC language system.
data file must exist on the software disk before the program will proceed with testing. If such a file does not exist, the program will prompt the user to enter calibration data through the computer keyboard. The sensor calibration data is then stored on the software disk. An existing power sensor calibration data file may be reviewed or modified by re-entering the power sensor serial number in the LIST OF DEFAULTS display.
F R E Q . AMPiD ZERO CAL C‘A L OUTPUT #2 Figure 5-3. RF Input and Calibration Controls HP-IB Addresses ‘Ihble 5-4 lists the default assigned addresses and test equipment. For dual bus systems the select code for the test equipment is 7 and the select code for the instrument under test is 8. (The address for the HP 8568A/B under test is 818.) In single bus systems, the select code for the test equipment is 7, and the select code for the instrument under test is 7. ‘Ihble 5-4.
Error Messages Self-explanatory error messages are incorporated into the Operation Verification program to assist you in identifying errors. ‘I&t Descriptions The following test descriptions list the Specifications, Related Performance Test, and Test Description for each test performed by the Operation Verification program. The specifications listed below are those of each Operation Verification test and are uncorrected (where applicable).
1. Input Attenuator Switching Uncertainty 1. Input Attenuator Switching Uncertainty Specification Related Performance Test Description f 1 .O dB over 10 to 70 dB range Input Attenuator Switching Uncertainty Test A signal source of known amplitude is connected to the spectrum analyzer and the analyzer is adjusted for a reference. The input attenuator is stepped down from 10 dB to 70 dB, while the reference level and the signal source are stepped up.
2. IF Gain Uncertainty Specification 0.0 dBm to -55.9 dBm . . . . . . . . . . . . . . . . . . . . . . . . . . f0.6 dB -56.0 dBm to -129.9 dBm . . . . . . . . . . . . . . . . . . . . . . hl.0 dB Related Performance Test Description 5-12 Operation Verification IF Gain Uncertainty Test A signal source of known amplitude is connected to the spectrum analyzer and the analyzer is adjusted for a reference level. The amplitude of the signal peak is measured in 0.1 dB steps from -0.1 dB to -1.
3. Scale Fidelity (Log) 3. Scale Fidelity (Log) Specification 5 *l.O dB max. over 0 to 80 dB display < f 1.5 dB max. over 0 to 90 dB display Related Performance Test Description Amplitude Fidelity Test The specification listed is for cumulative error. Only cumulative error is measured in this procedure. A signal source of known amplitude is connected to the spectrum analyzer and the analyzer is adjusted for a reference.
4. Scale Fidelity (Linear) Specification Related Performance Test Description 5-14 Operation Verification 413% of Reference Level Amplitude Fidelity Test A signal source of known amplitude is connected to the spectrum analyzer and the analyzer is adjusted for a reference. The signal source is stepped down from -10 dB to -30 dB in 10 dB steps and the amplitude of the displayed signal measured using the marker function.
5. Log Scale Switching Uncertainty 5. Log Scale Switching Uncertainty Specification Related Performance Test Description 310.5 dB Log Switching Uncertainty Test A signal source of known amplitude is connected to the spectrum analyzer and the analyzer is adjusted for a reference in the 1 dB per division log scale. The spectrum analyzer is then switched to each of the other LOG scales (2 dB, 5 dB, and 10 dB). The amplitude of the signal peak is measured at each setting.
6. Resolution Bandwidths Specification Related Performance Tests Bandwidth 10 Hz to 3 MHz; *20% 3 kHz to 1 MHz; flO% Amplitude (Referenced to 1 MHz amplitude) 3 MHz; fl.O dB 1 MHz to 100 Hz; f0.5 dB 30 Hz; AO.8 dB 10 Hz; f2.
7. Impulse and Resolution Bandwidths (Opt. 462 Impulse Bandwidth) 7. Impulse and Resolution Bandwidths (Opt. 462 Impulse Bandwidth) Specification Bandwidth Related Performance Tests 3 MHz; &20% 1 MHz to 1 kHz; &20% 300 Hz to 10 Hz; +50%, -0% Amplitude 3 MHz; fl.O dB 1 MHz to 100 Hz; f0.5 dB 30 Hz; f0.8 dB 10 Hz; f2.
8. Line Related Sidebands Specification Related Performance Test Description 5-18 Operation Verification 85 dB below the peak of a CW signal (Option 400: ~75 dB) Line Related Sidebands Test A signal source is connected to the spectrum analyzer input and the necessary front-panel control settings made for the test. The harmonics of the line frequency are calculated, the front-panel controls to view the frequencies, and measure the amplitude of the signal at each of the frequencies.
9. Residual FM 9. Residual FM Specification Related Performance Test Description Less than 3 Hz peak-to-peak for sweep time 510 s; span ~100 kHz; resolution bandwidth 530 Hz, video bandwidth 530 Hz. Residual FM Test A signal source is connected to the spectrum analyzer input and the required front panel control settings are made as stated in the specification. The slope of the signal is measured for use in calculating the residual FM.
10. RF Gain Uncertainty Specification Related Performance Test Description 5-20 Operation Verification RF gain uncertainty due to second LO shift: fl.O dB (uncorrected) RF Gain Uncertainty Test A signal is connected to the spectrum analyzer’s SIGNAL INPUT and the analyzer front panel controls set to view the signal. The 2nd LO is shifted up. The marker functions are used to measure the change in amplitude.
11. Sweep Time Accuracy 11. Sweep Time Accuracy Specification Related Performance Test Description Sweep time 1100 s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sweep time >lOO s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4110% f20% Sweep Time Accuracy Test An internal measurement function is used to measure the sweep time at 20 ms, 750 ms, 5 s, 30 s, 200 s, and 1500 s.
12. Average Noise Level Specification Related Performance Test Description 5-22 Operation Verification Displayed: < - 135 dBm for frequencies > 1 MHz, <- 112 dBm for frequencies 11 MHz but >500 Hz with 10 Hz resolution bandwidth, 0 dB input attenuation, 1 Hz video filter. Average Noise Level Test The signal input of the spectrum analyzer load or the synthesizer and the analyzer front-panel control settings are made and measured at 501 Hz, 1001 MHz, and 1501 is terminated with a 50 ohm attenuator.
13. Residual Responses 13. Residual Responses Specification Related Performance Test Description -105 dBm, with 0 dB input attenuation Residual Responses Test The signal input of the spectrum analyzer is terminated with a 50 ohm load or the synthesizer and the analyzer attenuator.
14. Frequency Span Accuracy Specification For spans >l MHz; f(2% of the actual frequency separation, + 0.5% of span setting) For span 51 MHz; f(5% of the actual frequency separation, + 0.5% of span setting) Related Performance Test Description 5-24 Operation Verification Frequency Span Accuracy Test A stable signal source is connected to the spectrum analyzer and the center frequency and span are set to measure spans of 10 MHz, 1 MHz, and 100 kHz.
15. Frequency Response 15. Frequency Response Specification INPUT #l f 1 .O dB, 100 Hz to 500 MHz (2 10 dB RF Attenuation) ~tl.5 dB, 100 Hz to 1500 MHz (210 dB RF Attenuation) INPUT #2 fl.O dB, 100 kHz to 1500 MHz (210 dB RF Attenuation) Related Performance Test Description Frequency Response Test The spectrum analyzer rear panel 1ST LO OUTPUT is connected to a tracking generator which supplies the input signal for the analyzer.
16. Second Harmonic Distortion Specification For mixer level s-30 dBm: 100 Hz to 10 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <-60 dBc >lO MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <-70 dBc Related Performance Test Description 5.26 Operation Verification Harmonic and Intermodulation Distortion A 40 MHz signal is applied to the analyzer’s RF INPUT through a 50 MHz low-pass filter.
17. Third Order Intermodulation Distortion 17. Third Order Intermodulation Distortion Specification Related Performance Test Description Intercept is greater than +5.0 dBm from 100 kHz to 10 MHz and greater than + 10 dBm from 10 MHz to 1500 MHz. Harmonic and Intermodulation Distortion Test Two signals with 10 kHz and 1 MHz separation are applied to the first mixer.
18. Calibrator Output Amplitude Accuracy Specification Related Performance Test Description 5.28 Operation Verification -10 dBm, 310.2 dB Calibrator Output Amplitude Accuracy Test The power sensor is connected to the spectrum analyzer CAL OUTPUT and the power is measured.