TB 9-6625-2243-24
Table 11. Model 77/AN Specifications
Performance specifications
Test instrument parameters
(% of reading + counts)
Dc voltage
Range:
Accuracy:
(1.0% + 1)
320 mV to 320 V
(1.3% + 1)
1000 V
Ac voltage
Range: 0 to 750 V, 45 Hz to 1 kHz
Accuracy: (4.0% + 2)
Dc Current
Range: 32 mA, 320 mA and 10 A
Accuracy: (3.0% + 2)
1
Ac Current
Range: 0 to 10 A, 45 Hz to 1 kHz
Accuracy: (5.0% + 2)
Range:
Accuracy:
(2.0% + 2)
320
(2.0% + 1)
3200 to 3.2 M
(3.0% + 1)
32 M
1
Ac current verified by dc current checks because both use the same shunt resistors.
Table 11a. Model 77/AN Dc Voltage
Performance Checks
Test
Calibrator
Test instrument indications
instrument
output settings
range settings
Min
Max
320 mV
300 mV
296.9
303.1
3.2 V1
3V
2.969
3.031
32 V
30 V
29.69
30.31
320 V
300 V
296.9
303.1
1000 V
900 V
887
913
1
Set function switch to V dc.
Table 11b. Model 77/AN Ac Voltage
Performance Checks
Calibrator output
Test
settings
Test instrument indications
instrument
Voltage
range settings
(V)
(Hz)
Min
Max
3.2 V
3
45
2.878
3.122
3.2 V
3
1000
2.878
3.122
32 V
30
45
28.78
31.22
32 V
30
1000
28.78
31.22
320 V
300
1000
287.8
312.2
320 V
300
45
287.8
312.2
750 V
700
45
670
730
750 V
700
1000
670
730
17