Ac Volts Test And Calibration; Ohms Test And Calibration; Recommended Test Equipment - HP 3478A Technical Manual

3478A
Instrument
Digital Voltmeter
DC Voltage
Standard
AC Calibrator
AC/DC Current
Source
Resistance
Standard
Desktop Computer
Bus System
Analyzer
Oscilloscope
Signature Analyzer
* P = Performance
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).
Table 4-2. Recommended Test Equipment
Critical Specification
Range:30OmV to 300V
Accuracy: + .004%(30V,300V)
± .005%(300mV,3V)
± .025%(30mV)
Voltage:3OmV to 300V
Accuracy: ± .005%
Frequency:2OHz to 300KHz
Voltage:30mV to 300V
Accuracy: .1 %
Voltage Stability: ± .02%
DC Current:100mA to 1A
Accuracy: ± .03%
AC Current: 100mA to 1A
Frequency: 1KHz to 5KHz
Accuracy: .1 9%
Resistance: 10 ohm
Accuracy: i .0005%
Resistance: 100 ohm
Accuracy: f .0005%
Resistance:1K ohm
Accuracy: ± .0005%
Resistance: 1 OK ohm
Accuracy: ± .001%
Resistance: 100K ohm
Accuracy: ± .001%
Resistance:1M
Accuracy: ± .002%
Resistance: 10M
Accuracy:±.01%
HP-IB Capability
HP-IB Control Capability
Bandwidth:DC to 100MHz
C = Calibration
Recommended Model
-hp- Model 3456A
Systron Donner
Model M107
Fluke Model 5200A
and Model 5215A
Valhalla Model
2500
Guideline Model:
9330/10 or
9330A/10
9330/100 or
9330A/100
9330/1K or
9330A/1 K
9330/10K or
9330A/10K
9330/100K or
9330/100K
9330/1M
9330/10M
-hp- Model 85,
9825,9826,9835,or 9845
-hp- Model 59401A
-hp- Model 1740A
-hp- Model 5004A
T = Troubleshooting
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
TM 11-6625-3071-14
Use*
PCT
PCT
PCT
PCT
PC
PC
PC
PC
PC
PC
PC
CTO
T
T
T
O = Operator's Check