Table 12b. Model 77/BN Ac Voltage
Performance Checks
Calibrator output
Test
settings
Test instrument indications
instrument
Voltage
range settings
(V)
(Hz)
Min
Max
3.2 V
3
45
2.935
3.065
3.2 V
3
1000
2.935
3.065
32 V
30
45
29.35
30.65
32 V
30
1000
29.35
30.65
320 V
300
1000
293.5
306.5
320 V
300
45
293.5
306.5
750 V
700
45
681
719
750 V
700
500
681
719
Table 12c. Model 77/BN Resistance
Performance Checks
Calibrator
Test instrument
Error
Output
range settings
display indications
settings
(Ω)
(%)
(Ω)
320
1001
2.1
3200
1k
2.1
32 k
10 k
2.1
320 k
100 k
2.1
2
3.2 M
1M
2.1
32 M
10 M
2.1
Set calibrator 2 wire Comp ON.
1
Set calibrator 2 wire Comp OFF.
2
Table 12d. Model 77/BN Dc Current
Performance Checks
Test instrument
Calibrator
Test instrument indications
range settings
output settings
Min
Max
32 mA
30 mA
29.37
30.63
320 mA
300 mA
293.7
306.3
10 A1
5A
4.87
5.13
Connect calibrator amplifier CURRENT OUTPUT HI and LO to TI 10A and COM.
1
12. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.
19/(20BLANK)