Agilent 75000 SERIES C Agilent E1411A/E1411B 5 1/2-Digit Multimeters Service Manual Serial Numbers The Information in this Service Manual applies to E1411A 5 1/2-Digit Multimeters with serial number prefix 3002A and to E1411B 5 1/2-Digit Multimeters with serial number prefix 3050A. *E1411-90011* E1411-90011 Copyright© Agilent Technologies, Inc. 1996-2005 Manual Part Number: E1411-90011 Printed: November 2005 Edition 2 Printed in U.S.A.
Table of Contents Chapter 1 - General Information Introduction . . . . . . . . . . . . Safety Considerations . . . . . . Multimeter Description . . . . . Recommended Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 9 11 12 Chapter 2 - Installation Introduction . . . . . . . Initial Inspection . . . .
Chapter 6 - Replaceable Parts Introduction . . . . . . . . Exchange Assemblies . Ordering Information . Replaceable Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 . 47 . 47 . 47 Chapter 7 - Manual Changes Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Certification Agilent Technologies, Inc. certifies that this product met its published specifications at the time of shipment from the factory. Agilent Technologies further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology (formerly National Bureau of Standards), to the extent allowed by that organization’s calibration facility, and to the calibration facilities of other International Standards Organization members.
Documentation History All Editions and Updates of this manual and their creation date are listed below. The first Edition of the manual is Edition 1. The Edition number increments by 1 whenever the manual is revised. Updates, which are issued between Editions, contain replacement pages to correct or add additional information to the current Edition of the manual. Whenever a new Edition is created, it will contain all of the Update information for the previous Edition.
SA Manufacturer’s Name: Manufacturer’s Address: DECLARATION OF CONFORMITY According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014 Agilent Technologies, Incorporated Measurement Product Generation Unit th 815 14 ST. S.W. Loveland, CO 80537 USA Declares, that the product Product Name: Model Number: Product Options: 5 ½ Digit Multimeter E1411B This declaration covers all options of the above product(s).
Chapter 1 General Information Introduction This manual contains information required to test, adjust, troubleshoot, and repair the Agilent E1411A and E1411B C-Size VXI 5 1/2-Digit Multimeters (E1411 multimeter). See the Agilent E1326A/E1411A User’s Manual or the Agilent E1326B/E1411B User’s Manual for additional information on the E1411 multimeter. Figure 1-1 shows the E1411A and E1411B multimeters. Figure 1-1.
Warnings and Cautions WARNING This section contains WARNINGS which must be followed for your protection and CAUTIONS which must be followed to avoid damage to the equipment when performing instrument maintenance or repair. SERVICE-TRAINED PERSONNEL ONLY. The information in this manual is for service-trained personnel who are familiar with electronic circuitry and are aware of the hazards involved.
WARNING CAUTION Multimeter Description NOTE USE PROPER FUSES. For continued protection against fire hazard, replace the line fuse(s) only with fuses of the same current rating and type (such as normal blow, time delay, etc.). Do not use repaired fuses or short-circuited fuseholders. Static electricity is a major cause of component failure. To prevent damage to the electrical components in the multimeter, observe anti-static techniques whenever working on the multimeter.
Multimeter Serial Numbers Multimeters covered by this manual are identified by a serial number prefix listed on the title page. Agilent Technologies uses a two part serial number in the form 0000A00000, where 0000 is the serial prefix, A is the country of origin (A=USA) and 00000 is the serial suffix. The serial number prefix identifies a series of identical instruments. The serial number suffix is assigned sequentially to each instrument.
Chapter 2 Installation Introduction This chapter provides information to install the E1411 multimeter, including initial inspection, preparation for use, environment, storage and shipment. Initial Inspection Inspect the shipping container for damage. If the shipping container or cushioning material is damaged, keep the container until the shipment contents have been checked and the instrument has been checked mechanically and electrically.
Shipping the Multimeter If you need to return an E1411 multimeter to Agilent, first remove any adapters or connectors before packaging the instrument for shipment. When you return the instrument to Agilent, attach a tag to the instrument identifying the owner and indicating service or repair required. In any correspondence, refer to the instrument by model number and full serial number.
Chapter 3 Operating Instructions Introduction This chapter lists operating information for the Agilent E1411 multimeter, including: • Multimeter operation • Operator’s check (self-test) Multimeter Operation Operator’s Check See the E1326A/E1411A User’s Manual or the E1326B/E1411B User’s Manual for multimeter operation, including: • • • • Getting started Configuring the multimeter Using the multimeter Understanding the multimeter • • • • Multimeter command reference Multimeter specifications Multimete
NOTE Example: Multimeter Self-Test Test failures can be caused by improper cabling, improper selection of the interface select code, primary, and/or secondary address setting. Verify proper connection and address selection before troubleshooting. An example follows which uses an HP 9000 Series 300 computer with BASIC and a multimeter address of 70903.
Chapter 4 Verification Tests Introduction The three levels of test procedures described in this chapter are used to verify that the E1411 multimeter: • is functional (Functional Verification) • meets selected testable specifications (Operation Verification) • meets all testable specifications (Performance Verification) WARNING Do not perform any of the following verification tests unless you are a qualified, service-trained person and have read the WARNINGS and CAUTIONS in Chapter 1 - General Information
The value in the "Measurement Uncertainty" column of Table 4-1 is derived from the specifications for the source used for the test, and represents the expected accuracy of the source. The value in the "Test Accuracy Ratio (TAR)" column of Table 4-1 is the ratio of multimeter accuracy to measurement uncertainty. Verification Test Examples Each Performance Verification Test includes an example program to perform the test.
NOTE Test failures can be caused by improper selection of the interface select code, primary address setting, and/or secondary address setting. Verify proper address selection before troubleshooting. Example: Self-Test 10 OUTPUT 70903;"*TST?" 20 ENTER 70903;A !Send the self-test command !Enter the test result 30 PRINT A 40 END !Display the result Operation Verification Tests There are no separate operation verification tests for the E1411 multimeter.
Test 4-1: DC Voltage Test (Zero Volt Input) This test verifies DC Voltage accuracy on all five ranges using a zero volt input. Equipment Setup 1. Connect the equipment as shown in Figure 4-1. Figure 4-1. DC Voltage (Zero Volt Input) Setup 2. Set the E1411 multimeter as follows: • • • • NOTE 20 Verification Tests Reset Multimeter ..................................................*RST Auto Zero .................................................................ON Power Line Cycles (PLC) .................
Test Procedure 1. Set the E1411 range to 0.113 V (0.125 V with 10% over- range) and measure the input voltage with MEAS:VOLT:DC? 0.1 2. Observe the input, record the results on the Performance Test Record, and verify the results are within specified limits (at the range selected for 1 PLC). 3. Repeat steps 1 and 2 for the following ranges: E1411 Range 0.91 V 7.27 V 58.10 V 300.00 V 10% Overrange 1V 8V 64 V None Input 0V 0V 0V 0V 4. Remove power and disconnect test equipment.
Test 4-2: DC Voltage Test (DCV Input) This test verifies DC Voltage accuracy on all five ranges with DC voltage inputs. Equipment Setup WARNING 1. Connect the equipment as shown in Figure 4-2. The DC Standard (Datron 4708, Option 10) can produce dangerous voltages which are present on the terminals. Do not touch the front (or rear) panel terminals unless you are sure no dangerous voltage is present. Figure 4-2. DC Voltage (DCV Input) Setup 2.
NOTE *RST sets Auto Zero to ON and Power Line Cycles to 1. Test Procedure 1. Set the DC Standard Output to 0.1 DCV. 2. Set the E1411 range to 0.113 V (0.125 V with 10% overrange) with CONF:VOLT:DC .1 3. Measure the input with READ? and verify the results are within specified limits (at the range selected for 1 PLC). Record results on Performance Test Record. 4. Repeat steps 1 through 3 for the following DC Standard voltage settings and E1411 ranges: E1411 Range 0.91 V 7.27 V 58.10 V 300.
90 100 110 120 130 140 150 160 170 FOR I=1 TO 5 PRINT "Set DC Standard to ";Volts(I);"VDC" PRINT "Press Continue when ready" PAUSE CLEAR SCREEN OUTPUT 70903;"CONF:VOLT:DC";Range(I) !Set DCV, range WAIT 1 !Wait for settling OUTPUT 70903;"READ?" ENTER 70903;Read_meas(I) !Enter DC voltage 180 190 200 210 220 NEXT I FOR I=1 TO 5 PRINT "Voltage on";Range(I);"V range =";Read_meas(I);"VDC" NEXT I END Test 4-3: AC Voltage Test This test verifies AC voltage accuracy on the 87.
Figure 4-3. AC Voltage Setup 2. Set the E1411 multimeter as follows: • • • • NOTE Test Procedure Reset Multimeter ..................................................*RST Auto Zero ................................................................ON Power Line Cycles (PLC) ...........................................1 Line Freq Reference (CAL:LFR) .......... 50Hz or 60Hz *RST sets Auto Zero to ON and Power Line Cycles to 1. 1. Set the AC Standard Output to 0.07 Vac at 20 Hz sine wave. 2.
E1411 Range 10% overrange AC Standard Output Voltage (Vac) 79.5 mV 79.5 mV 79.5 mV 300.0 V 87.5 mV 87.5 mV 87.5 mV None 0.07 V 0.07 V 0.07 V 300.00 V Frequency (Hz) 60 Hz 5 kHz 10 kHz 5 kHz 5. Remove power and disconnect test equipment. Example: AC Voltage Test NOTE This example performs an ACV test for a power line reference frequency of 60 Hz. Change line 80 to OUTPUT 70903;"CAL:LFR 50" for 50 Hz operation.
230 END Test 4-4: Resistance Test (4-Wire Ohms) This test verifies the 4-wire resistance accuracy of the 2kΩ, 100kΩ, and 1MΩ ranges. NOTE The DC Voltage performance test must be performed prior to the Resistance Test to check the A/D accuracy on all ranges. If the DC Voltage test has not been performed, resistance must be checked on all ranges at 0 and at 50% of full scale. Figure 4-4. Resistance Test Setup Equipment Setup 1.
2. Set the E1411 multimeter as follows: • • • • NOTE Test Procedure Reset Multimeter ..................................................*RST Auto Zero ..................................................................ON Power Line Cycles (PLC) .............................................1 Line Freq Reference (CAL:LFR) .........50 Hz or 60 Hz *RST sets Auto Zero to ON and Power Line Cycles to 1. 1. Set the Resistance Standard to 1 kΩ setting 2.
Example: 4-Wire Ohms Test This example performs a 4-wire ohms resistance test for a power line reference frequency of 60 Hz. Change line 80 to OUTPUT 70903;"CAL:LFR 50" for 50 Hz operation. The program also calculates the Upper Limit and Lower Limit values for ACTUAL Resistance Standard resistance value (lines 170-190).
Performance Test Record NOTE Multimeter Accuracy Table 4-1, Performance Test Record for the E1411 Multimeter, is a form you can copy and use to record performance verification test results for the multimeter. Page 3 of Table 4-1 shows multimeter accuracy, measurement uncertainty and test accuracy ratio (TAR) values. See Appendix A Calculating Multimeter Accuracy for example calculations of Table 4-1 entries.
Table 4-1. Performance Test Record for the E1411 Multimeter (Page 1 of 3) Test Facility: Name _________________________________________ Report No.
Table 4-1. Performance Test Record for the E1411 Multimeter (Page 2 of 3) Model _________________________________ Report No. ____________________ Date_________________ Test Equipment Used: Description Model No. Trace No. 1. DATRON 4708 _______________ _______________ _______________ 2. ________________________________ _______________ _______________ _______________ 3. ________________________________ _______________ _______________ _______________ 4.
Table 4-1. Performance Test Record for the E1411 Multimeter (Page 3 of 3) Model ________________________________ Report No. _______________________________ Date_________________ 90 day Specifications Test No. Test Input DMM Range Low Limit Measured Reading High Limit Meas Uncert* Test Acc Ratio (TAR)** DC Voltage (Zero Volts Input) (Values in V) 4-1 0.0 0.0 0.0 0.0 0.0 0.113 0.910 7.270 58.100 300.000 -.000005 -.000015 -.000050 -.001000 -.
34 Verification Tests Agilent E1411A/E1411B Service Manual
Chapter 5 Adjustments Introduction This chapter contains procedures to adjust the Agilent E1411 multimeter for peak performance. For best performance, the instrument should be adjusted after repair. All adjustments are performed electrically, so manual adjustment of the multimeter is not necessary. WARNING Do not perform any of the following adjustments unless you are a qualified, service-trained person, and have read the WARNINGS and CAUTIONS in Chapter 1 - General Information.
DC Voltage Adjustments Equipment Setup WARNING This procedure adjusts E1411 multimeter DC voltage measurement accuracy. 1. Connect the equipment as shown in Figure 5-1. The DC Standard (Datron 4708, Option 10) can produce dangerous voltages which are present on the terminals. Do not touch the front (or rear) panel terminals unless you are sure no dangerous voltage is present. Figure 5-1. DC Voltage Adjustment Setup 2. Set the E1411 as follows: • Reset Multimeter ........................................
NOTE Adjustment Procedure *RST sets Auto Zero to ON and Power Line Cycles to 1. 1. Set the DC Standard output to 7.7 V 2. Set the E1411 range to 8 V, and adjust the multimeter at 7.7 V using: FUNC:VOLT:DC VOLT:DC:RANG 8 CAL:VAL 7.7 TRIG:DEL .05 CAL? 3. Verify that the returned calibration error code is 0 (no error). If not 0, see Table 5-1 for a list of calibration errors and codes. The calibration error can be returned to an external computer using an ENTER type statement. 4.
When connected to the E1411 multimeter, some DC Standards may exhibit voltage variations at the start of a measurement. TRIG:DEL .05 (line 190) adds a 0.8 sec wait before calibration begins to allow settling time for the DC Standard output. TRIG:DEL .05 is used since the input is sampled 16 times before the calibration is performed. Thus, total delay added = 0.05 seconds x 16 = 0.8 seconds. 1 10 20 ! DC Voltage Adjustments OPTION BASE 1 DIM Range(10),Volts(10) 30 40 50 DATA 8.0, 8.0, 0.125, 0.125, 1.
AC Voltage Adjustments NOTE Equipment Setup This procedure adjusts the E1411 AC voltage measurement accuracy. The DC Voltage adjustment MUST be performed before the AC Voltage adjustment. 1. Connect the equipment as shown in Figure 5-2 Figure 5-2. AC Voltage Adjustment Setup 2. Set the E1411 as follows: • • • • Reset Multimeter ....................................................*RST Auto Zero .................................................................... ON Power Line Cycles (PLC) ............
NOTE Adjustment Procedure *RST sets Auto Zero to ON and Power Line Cycles to 1. 1. Set the AC Standard output to 5.6 Vac at 1 kHz 2. Set the E1411 range to 5.6 V, and adjust the multimeter at 5.6 V using: FUNC:VOLT:AC VOLT:AC:RANG 5.6 CAL:VAL 5.6 TRIG:DEL .05 CAL? 3. Verify that the returned calibration error code is 0 (no error). If not 0, see Table 5-1 for a list of calibration errors and codes. 4.
1 ! AC Voltage Adjustments 10 OUTPUT 70903;"*RST" !Set autozero on and PLC 1 20 OUTPUT 70903;"CAL:LFR 60" !Set 60 Hz line ref frequency 30 Re_try: ! 40 PRINT "Set AC Standard to 5.6 Vac at 1.0 kHz" 50 PRINT "Press Continue when ready" 60 PAUSE 70 CLEAR SCREEN 80 OUTPUT 70903;"FUNC:VOLT:AC" !Set ACV function 90 OUTPUT 70903;"VOLT:RANG 5.6" !Set 5.6 Vac range 100 OUTPUT 70903;"CAL:VAL 5.6" 110 OUTPUT 70903;"TRIG:DEL .05" !Set 5.
Resistance Adjustments NOTE Equipment Setup This procedure adjusts the E1411 multimeter 4-wire resistance measurement accuracy. The DC Voltage adjustment and the AC Voltage adjustment MUST be performed before the Resistance adjustment. 1. Connect the equipment as shown in Figure 5-3 Figure 5-3. Resistance Adjustments Setup 2. Set the E1411 as follows: • • • • 42 Adjustments Reset Multimeter .................................................... *RST Auto Zero ..........................................
NOTE Adjustment Procedure *RST sets Auto Zero to ON and Power Line Cycles to 1. 1. Set the Resistance Standard to 1 kΩ. 2. Set the E1411 range to 2 kΩ, and adjust the multimeter at 1 kΩ using: FUNC:FRES FRES:RANG 2000 CAL:VAL 1000 CAL? NOTE For best adjustment accuracy, you may want to measure the ACTUAL resistance value of the Resistance Standard and use the value in the CAL:VAL command.
Example: 4-Wire Resistance Adjustments This example performs a 4-wire ohms resistance adjustment for a power line reference frequency of 60 Hz. Change line 80 to OUTPUT 70903;"CAL:LFR 50" for 50 Hz operation. If a calibration error occurs, the program displays the calibration error and prompts you to repeat the adjustment (see Table 5-1 for a list of calibration errors).
Calibration Errors Table 5-1 summarizes calibration error numbers, titles and descriptions for the E1411 multimeter. Note that an error is returned if the adjustment (calibration) standard used is outside the calibration range of the multimeter (between ±[0.5 full scale and full scale]). Table 5-1. E1411 Multimeter Calibration Errors Error Title Description Code* 0 No Error No error has occurred since last time the error code was read.
46 Adjustments Agilent E1411A/E1411B Service Manual
Chapter 6 Replaceable Parts Introduction This chapter contains information to order replaceable parts for the Agilent E1411A and E1411B multimeters. Exchange Assemblies Tables 6-1 and 6-2 list assemblies that may be replaced on an exchange basis (EXCHANGE ASSEMBLIES). Exchange, factory-repaired, and tested assemblies are available only on a trade-in basis. Defective assemblies must be returned for credit. Assemblies required for spare parts stock must be ordered by the new assembly part number.
Table 6-1.
Figure 6-1.
Table 6-2.
Figure 6-2.
Table 6-3. E1411 Reference Designators E1411 Reference Designators A .......................................... assembly CBL ............................................ cable F ................................................... fuse J ................ electrical connector (jack) JM ........ electrical connector (header) K ...................................................relay MP .................. misc. mechanical part P ............... electrical connector (plug) PNL ..................................
Chapter 7 Manual Changes Introduction This chapter contains information to adapt this manual to instruments for which the content does not directly apply. Since this manual applies directly to instruments with serial numbers listed on the title page, change information is not required. See Multimeter Serial Numbers in Chapter 1 General Information for E1411 multimeter serial number information.
54 Manual Changes Agilent E1411A/E1411B Service Manual
Chapter 8 Service Introduction WARNING Equipment Required This chapter contains information to service the E1411 multimeter including troubleshooting guidelines and repair/maintenance guidelines. Do not perform any of the service procedures shown unless you are a qualified, service-trained person, and have read the WARNINGS and CAUTIONS in Chapter 1 - General Information. Equipment required for multimeter troubleshooting and repair is listed in Table 1-1, Recommended Test Equipment.
Troubleshooting Techniques Identifying the Problem There are two main steps to troubleshoot an E1411 multimeter problem: (1) identify the problem, and (2) test assemblies to isolate the cause to a user-replaceable component. Multimeter problems can be divided into four general categories: • • • • Self-test errors Operator errors Catastrophic failures Performance out of specification Self-Test Errors An error number (1, 2, 3, or 4) is returned when the multimeter self-test fails.
Performance Out of Specification If the multimeter performance is out of specification limits, use the adjustment procedures in Chapter 5 - Adjustments to correct the problem. If the condition repeats, see "Testing Assemblies" to troubleshoot the multimeter. Testing Assemblies NOTE You can use the tests and checks in Table 8-3 to isolate the problem to a user-replaceable part on the multimeter frame or PCA.
Checking Switches/Jumpers Verify the logical address setting is set correctly (factory set at 24). Verify the interrupt priority jumpers are set correctly (factory set at level 1). See the E1326A/E1411A User’s Manual or the E1326B/E1411B User’s Manual for information. Testing Multimeter Frame To test the multimeter frame, see Table 8-3 for guidelines to check binding posts MP3, MP4, MP5, and MP6, and cables CBL1 and CBL2.
• Do not use pliers to remove a MOS or CMOS device from a high-grip socket. Instead, use a small screwdriver to pry the device up from one end. Slowly lift the device up, one pair of pins at a time. • After you remove a MOS or CMOS device from an assembly, place the device onto a pad of conductive foam or other suitable holding material. • If a device requires soldering, be sure the assembly is placed on a pad of conductive material.
NOTE Removing Front Panel When reinstalling the top shield, verify that the slots are aligned with the tabs, then set the top shield into place. Use the following steps to remove the front panel and bottom shield from the printed circuit assembly (PCA). See Figure 8-2 for component locations. 1. 2. 3. 4. 5.
Removing Binding Posts Use the following steps to remove the E1411 front panel binding posts (MP3, MP4, MP5, and MP6) (see Figure 8-3). 1. 2. 3. 4. Unsolder wire Remove the 3/8-32 nut and spring washer Remove the binding post Reverse the order to reinstall the binding posts Figure 8-3. Removing Binding Posts Soldering Printed Circuit Boards CAUTION The etched circuit boards in the multimeter have plated-through holes that allow a solder path to both sides of the insulating material.
• Avoid unnecessary component unsoldering and soldering. Excessive replacement can result in damage to the circuit board and/or adjacent components. • Do not use a high power soldering iron on etched circuit boards as excessive heat may lift a conductor or damage the board. • Use a suction device or wooden toothpick to remove solder from component mounting holes. When using a suction device, be sure the equipment is properly grounded to prevent electrostatic discharge from damaging CMOS devices.
Appendix A Calculating Multimeter Accuracy Introduction This appendix shows how multimeter accuracy, measurement uncertainty, and test accuracy ratio (TAR) values are defined and calculated for the performance verification tests for the Agilent E1411 multimeter. See Table 4-1, "Performance Test Record for the Agilent E1411 Multimeter" for 90-day specification values of multimeter accuracy, measurement uncertainty, and test accuracy ratios (TARs).
Test Accuracy Ratio (TAR) Definition NOTE Multimeter Accuracy Calculations Test Accuracy Ratio (TAR) is the ratio of multimeter accuracy to measurement uncertainty. For the E1411 multimeter performance tests, test accuracy ratio = (High Limit value - Test Input value)/Measurement Uncertainty value. This value is shown in the "Test Accuracy Ratio (TAR)" column of Table 4-1. Test accuracy ratio does not apply to the DC Voltage (Zero Volts Input) test, since no measurement uncertainty value applies.
AC Voltage Accuracy Equations From Appendix A- Specifications of the E1326A /E1411A or E1326B /E1411B User’s Manual, AC voltage 90-day accuracy = ±(% of reading + volts). The accuracy equations for the ranges, frequencies and apertures used in the performance verification tests are: Range 87.5 mV 87.5 mV 87.5 mV 87.5 mV 300 V Frequency 20 Hz 60 Hz 5 kHz 10 kHz 5 kHz Accuracy [±(% of reading + Volts)] 2.175 + 1 mV 0.675 + 200 µV 0.675 + 200 µV 3.175 + 200 µV 1.
Measurement Uncertainty Calculations Measurement uncertainties for the Datron 4708 source are calculated using the 90-day accuracy specifications in the Datron 4708 User’s Handbook: Measurement Uncertainty = Datron Accuracy + Calibration Uncertainty, where Datron Accuracy (ppm) = Accuracy Relative to Calibration Standards = ±(ppm OUTPUT + ppm FS) and FS = 2 x range for all ranges except 1000V FS = 1100 for the 1000V range The assumed test conditions are: o o • Temperature of 23 C±1 C • 90 days since cal
Calculate ACV Measurement Uncertainty From Section 6 - Specifications of the Datron 4708 User’s Handbook , AC Voltage (Option 20) Accuracy (90 days since calibration and 23oC ±1o C) where Datron Accuracy = ±(ppm OUTPUT + ppm FS). Datron Output (ACV) 0.07 0.07 0.07 0.07 300.
Test Accuracy Ratio (TAR) Calculations For the E1411 multimeter, Test Accuracy Ratio (TAR) = [High Limit Input Value]/Measurement Uncertainty where the source input value is in DCV, ACV, or Ohms. Example: Calculate DCV Test Accuracy Ratio For a 7.0 DCV measurement if the High Limit value = 7.000750 DCV and the Measurement Uncertainty = .0000115 DCV, Test Accuracy Ratio (TAR) = (7.000750 V - 7.0000000 V)/.0000115 V = 65:1 (rounded to the nearest integer value).
Appendix B Verification Tests - C Programs Functional Verification Test Example:Self Test This program is designed to do the Functional Verification Test found in Chapter 4 - Verification Tests. This example performs a multimeter self-test to ensure that the multimeter is communicating with the mainframe, external controller, and/or external terminal. #include #include
Performance Verification Tests Example: Zero Volt DCV Test These programs are designed to do the Performance Verification Tests found in Chapter 4 - Verification Tests. This example performs a DCV test for zero volts input and a power line reference frequency of 60 Hz. /* Zero Volt DCV Test E1411A/B */ #include #include
Example: DC Voltage Test This test performs a DC Voltage test for positive input DC volts and a power line reference frequency of 60 Hz. /* DC Voltage Test (DCV Input) E1411A/B */ #include #include #define ADDR "hpib7,9,03" /* Address of E1326B */ void main () { INST id; /* Define id as an instrument */ float range[5] = {0.113, 0.910, 7.270, 58.10, 300.0}; float volts[5] = {0.1, 0.9, 7.0, 58.0, 300.
Example: AC Voltage Test This example performs an AC voltage test for a power line reference frequency of 60 Hz. /* AC Voltage Test E1411A/B */ #include #include #define ADDR "hpib7,9,03" /* Address of E1326B */ void main () { INST id; /* Define id as an instrument */ float source_volts[5] = {0.07, 0.07, 0.07, 0.07, 300.
Example: Resistance Test This example performs a 4-wire ohms resistance test. The program also calculates the Upper and Lower Limit values for the ACTUAL resistance values. Use these values in Table 4-1 if they differ from the given values. /* Resistance Test (4-wire Ohms) E1411A/B */ #include #include
Adjustments DC Voltage Adjustments These programs are designed to do the adjustments found in Chapter 5 Adjustments. This example performs DC Voltage adjustments for a power line reference frequency of 60 Hz. If no calibration error occurs, the program displays an "adjustment complete" message. If a calibration error occurs, the program displays the calibration error and prompts you to repeat the adjustment (see Table 5-1 for a list of calibration errors).
AC Voltage Adjustments This example performs an AC Voltage adjustment for a power line reference frequency of 60 Hz and an input of 5.6 Vac at 1 kHz. If no calibration error occurs, the program displays an "adjustment complete" message. If a calibration error occurs, the program displays the calibration error and prompts you to repeat the adjustment (see Table 5-1 for a list of calibration errors). /* AC Voltage Adjustments E1411A/B */ #include #include
Resistance Adjustments This example performs a 4-wire ohms resistance adjustment for a power line reference frequency of 60 Hz. If a calibration error occurs, the program displays the calibration error and prompts you to repeat the adjustment (see Table 5-1 for a list of calibration errors). /* 4-wire Resistance Adjustments E1411A/B */ #include #include
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