TB 9-6625-2354-35
Table 9c. Simpson, Model 260-6XLPM Ac Voltage
Calibration Performance Limits and Adjustments
Ac Voltage
Test instrument
Calibrator
Test instrument
1
Ac volts
Indication
Initial output
err indication
Adjustments
range
(V)
(V)
(Hz)
(%)
(fig. 3) (R)
2.5
2.5
2.5
60
3
R40
10
10
10
60
3
-----
25
25
25
60
3
-----
100
100
100
60
3
-----
250
250
250
60
3
R43
500
500
500
60
3
-----
10002
1000
1000
60
3
-----
TI must be calibrated in horizontal position.
1
Reduce output to minimum and move positive lead from TI + input to TI 1000V DC/AC input. After 1000V check is
2
complete, reduce output to minimum and move positive lead to TI + input.
Table 9d. Simpson, Model 260-6XLPM Resistance
Calibration Performance Limits and Adjustments
Resistance
Resistance standard indications
(Ω)
Test instrument
Test instrument
1
Indications
Resistance
ohms scale
(Ω)
range
Min
Max
Adjustments
LP RX1
20
17.2
22.0
2
LP RX10
20
172
220
----
RX13
6
5.35
6.75
----
RX100
6
555
650
----
RX1K
6
5550
6500
----
RX10K
6
55,500
65,000
----
TI must be calibrated in horizontal position.
1
With leads separated, rotate TI OHMS ADJ control to set TI pointer to infinity (~) on the blue low power ohms arc. If pointer
2
cannot be adjusted to infinity (~), replace the 1.5 V battery. If pointer still cannot be adjusted to infinity (~), rotate TI OHMS
ADJ control to the middle of its rotation, then adjust R2 (Fig.3) to set pointer to infinity on the blue low power ohms arc.
3 Short leads and adjust OHMS ADJ control for 0 indication on ohms scale. Repeat for each range.
Table 9e. Simpson, Model 260-6XLPM 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. 3) (R)
50 A
50 A
50 A
1
R1
2
.5 mA
.5 mA
.5 mA
2
R3
.5 mA
.3 mA
.3 mA
3.3
----
.5 mA
.1 mA
.1 mA
10
----
5 mA
5 mA
5 mA
2
----
50 mA
50 mA
50 mA
2
----
500 mA
500 mA
500 mA
2
----
5A
5A
5A
2
----
3
TI must be calibrated in horizontal position.
1
Connect positive lead to TI +50A/250mV input. After 50 A check is complete, reduce output to minimum and move
2
positive lead to TI + input.
3 Reduce output to minimum and connect TI negative lead to -5A input and connect TI positive lead to +5A input.
CHANGE 1 17
