TB 9-6625-2243-24
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
( )
(%)
( )
1
320
100
2.1
3200
1k
2.1
32
k
10 k
2.1
2
320
k
100 k
2.1
3.2 M
1M
2.1
32
M
10 M
2.1
1
Set calibrator 2 wire Comp ON.
2
Set calibrator 2 wire Comp OFF.
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
1
10 A
5A
4.87
5.13
1
Connect calibrator amplifier CURRENT OUTPUT HI and LO to TI 10A and COM.
12. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.
19/(20 Blank)