TB 9-6625-2243-35
Table 10a. Model 77 Series III Dc Voltage
Performance Checks
Test
Test instrument indications
instrument
Calibrator
range settings
output settings
Min
Max
320 mV
300 mV
299
301
3.2 V
3V
2.99
3.01
1
32 V
30 V
29.9
30.1
320 V
300 V
299
301
1000 V
900 V
895
905
Set function switch to V dc.
1
Table 10b. Model 77 Series III Ac Voltage
Performance Checks
Calibrator output
Test
settings
Test instrument indications
instrument
Voltage
range settings
(V)
(Hz)
Min
Max
3.2 V
3
45
2.938
3.062
3.2 V
3
500
2.938
3.062
32 V
30
45
29.38
30.62
32 V
30
1000
29.38
30.62
320 V
300
1000
293.8
306.2
320 V
300
45
293.8
306.2
1000 V
900
45
880
920
1000 V
900
1000
880
920
Table 10c. Model 77 Series III Resistance
Performance Checks
Calibrator
Test instrument
Error
Output
range settings
display indications
settings
(Ω)
(%)
(Ω)
320
1001
0.8
3200
1k
0.6
32 k
10 k
0.6
320 k
100 k2
0.6
3.2 M
1M
0.6
32 M
10 M
2.1
Set calibrator 2 wire Comp ON.
1
Set calibrator 2 wire Comp OFF.
2
Table 10d. Model 77 Series III Dc Current
Performance Checks
Test instrument
Calibrator
Test instrument indications
range settings
output settings
Min
Max
32 mA
30 mA
29.53
30.47
320 mA
300 mA
295.3
304.7
10 A
5A
4.9
5.1
1
Connect calibrator amplifier CURRENT OUTPUT HI and LO to TI 10A and COM.
1
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