TB 9-6625-2352-35
Table 7a. Simpson, Model 260-4 Specifications
Test instrument parameter
Performance specification
Dc voltage
Range: 0 to 5000 V
Accuracy: 2% of FS
Ac voltage
Range: 0 to 5000 V
Accuracy: 3% of FS
Range: 0 to 20 MΩ
Accuracy: 3 of arc
Dc current
Range: 0 to 10 A
Accuracy: 2% of FS
Table 7b. Simpson, Model 260-4 Dc Voltage
Calibration Performance Limits and Adjustments
Dc Voltage
Test instrument1
Calibrator output
Test instrument
Dc volts
Initial
Limits
range
Indication
output
Min
Max
Adjustments
250
250
250
mV
245
mV
255
mV
2
2.5
2.5
2.5 V
2.45 V
2.55 V
10
10
10
V
9.8 V
10.2 V
50
50
50
V
49
V
51
V
None
250
250
250
V
245
V
255
V
1000
1000
1000
V
980
V
1020
V
50003
5000 (900)
5000 (900) V
4900 (800) V
5100 (1000) V
TI must be calibrated in horizontal position.
1
Connect TI positive lead to TI +50 A/250mV input. After 250 mV check, move TI positive lead to TI + input.
2
3 Replace calibrator with power supply. Move positive lead to TI D.C. 5000 V input. Calibrate at 900 V if power supply not
available. After 5000 V check is complete, reduce output to minimum and move positive lead to TI + input.
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