TB 9-6625-2243-35
Table 5c. Model 75 Resistance
Performance Checks
Calibrator
Test instrument range
Error
Output
settings
display indications
settings
(Ω)
(%)
(Ω)
320
100
0.9
1
3200
1k
0.8
32 k
10 k
0.8
320 k
100 k
0.8
2
3.2 M
1M
0.8
32 M
10 M
2.6
Set calibrator 2 wire Comp ON.
1
Set calibrator 2 wire Comp OFF.
2
Table 5d. Model 75 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
293.8
306.2
10 A1
5A
4.9
5.1
Connect calibrator amplifier CURRENT OUTPUT HI and LO to TI 10A and COM.
1
Table 6. Model 75 Series II Specifications
Performance specifications
Test instrument parameters
(% of reading + counts)
Dc voltage
Range: 0 to 1000 V
Accuracy: (0.4% + 1)
Ac voltage
Range:
Accuracy:
(2.0% + 2)
3.2 V, 45 to 500 Hz
(2.0% + 2)
32 to 750 V, 45 Hz to 1 kHz
Dc Current
Range: 32 mA, 320 mA and 10 A
Accuracy: (1.5% + 2)
Ac Current
Range: 0 to 10 A, 45 Hz to 1 kHz
1
Accuracy: (2.5% + 2)
Range:
Accuracy:
320 Ω
(0.5% + 2)
3200 Ω to 3.2 MΩ
(0.5% + 1)
32 MΩ
(2.0% + 1)
Ac current verified by dc current checks because both use the same shunt resistors.
1
Table 6a. Model 75 Series II Dc Voltage
Performance Checks
Test
Test instrument indications
instrument
Calibrator
range settings
output settings
Min
Max
320 mV
300 mV
298.7
301.3
3.2 V
3V
2.987
3.013
1
32 V
30 V
29.87
30.13
320 V
300 V
297.8
301.3
1000 V
900 V
895
905
Set function switch to V dc.
1
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