TB 9-6625-2354-35
Table 13d. Simpson, Models 260-8& 260-8P Resistance
Calibration Performance Limits and Adjustments
Resistance
Resistance standard indications
(Ω)
Test instrument
Test instrument
1
Indications
Resistance
ohms scale
Min
Max
Adjustments
(Ω)
range
2
RX1
12
10.7
13.5
RX100
12
1110
1300
None
RX10,000
12
111,000
130,000
TI must be calibrated in horizontal position.
1
2 Short
leads and adjust OHMS ADJ for 0 indication on ohms scale. Repeat for each range.
Table 13e. Simpson, Models 260-8 & 260-8P Dc Current
Calibration Performance Limits and Adjustments
Dc Current
Test instrument
Calibrator
Test instrument
1
Indication
Initial output
err indication
Adjustments
Dc current range
(A)
(A)
(%)
(fig. 4) (R)
50 A
50 A
50 A
1.5
R1
2
1 mA
1 mA
1 mA
2
R2
10 mA
10 mA
10 mA
2
----
10 mA
6 mA
6 mA
3.3
----
10 mA
2 mA
2 mA
10
----
100 mA
100 mA
100 mA
2
----
500 mA
500 mA
500 mA
2
----
10 A3
10 A
10 A
2
----
TI must be calibrated in horizontal position.
1
Move positive lead from TI + input to TI +10A/50A/250mV input. After 50 A check is complete, move positive lead back to
2
TI + input.
3 Connect TI negative lead to -10A input and connect TI positive lead to +10A/50A/250mV input.
