TM 11-6625-3071-14
3478A
Table 4-2. Recommended Test Equipment
Instrument Critical Specification Recommended Model Use*
Digital Voltmeter Range:30OmV to 300V -hp- Model 3456A PCT
Accuracy: + .004%(30V,300V)
± .005%(300mV,3V)
± .025%(30mV)
DC Voltage Voltage:3OmV to 300V Systron Donner PCT
Standard Accuracy: ± .005% Model M107
AC Calibrator Frequency:2OHz to 300KHz Fluke Model 5200A PCT
Voltage:30mV to 300V and Model 5215A
Accuracy: .1 %
Voltage Stability: ± .02%
AC/DC Current DC Current:100mA to 1A Valhalla Model PCT
Source Accuracy: ± .03% 2500
AC Current: 100mA to 1A
Frequency: 1KHz to 5KHz
Accuracy: .1 9%
Resistance Guideline Model:
Standard Resistance: 10 ohm 9330/10 or PC
Accuracy: i .0005% 9330A/10
Resistance: 100 ohm 9330/100 or PC
Accuracy: f .0005% 9330A/100
Resistance:1K ohm 9330/1K or PC
Accuracy: ± .0005% 9330A/1 K
Resistance: 1 OK ohm 9330/10K or PC
Accuracy: ± .001% 9330A/10K
Resistance: 100K ohm 9330/100K or PC
Accuracy: ± .001% 9330/100K
Resistance:1M 9330/1M PC
Accuracy: ± .002%
Resistance: 10M 9330/10M PC
Accuracy:±.01%
Desktop Computer HP-IB Capability -hp- Model 85, CTO
9825,9826,9835,or 9845
Bus System HP-IB Control Capability -hp- Model 59401A T
Analyzer
Oscilloscope Bandwidth:DC to 100MHz -hp- Model 1740A T
Signature Analyzer -hp- Model 5004A T
* P = Performance C = Calibration T = Troubleshooting O = Operator's Check
a. Output from 30mV to 300V dc.
b. Within .005% full scale accuracy.
c. Short term stability better than .0002% per hour.
4-10. AC Volts Test and Calibration
4-11. For the AC Volts Test and Calibration (AC Volts
Function) use the Fluke Model 5200A/5215A AC
Calibrator. If the calibrator is not available, use a
substitute calibrator that meets the requirements listed
following this paragraph. It is recommended to acquire
the recommended calibrator with the HP-IB (IEEE 488)
option 05 for future computerized Performance Tests
and Calibrations.
a. Frequency Response: 20Hz to 100KHz (and
300KHz at 30V).
b. AC Volts Range: 30mV to 300V ac.
c. AC Volts Accuracy: ± .1%.
4-12. Ohms Test and Calibration
4-13. The 3478A's Ohms Function can be tested and
calibrated in two different ways, at full scale or 1/3 scale.
If the 3478A is to be tested and calibrated at full scale,
use three each of the recommended standard resistors
in series, to form 300, 3000, etc. If the 3478A is to be
tested and calibrated at 1/3 scale, use only one each of
the recommended standard resistors.
4-14. If the recommended resistors are not available,
use substitutes that meet the critical requirements. If a
substitute is not available, you may be able to use a
4-2
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