Technical data

142 U1401A User’s and Service Guide

7 Performance Tests and Calibration

Output current calibration

1 Without exiting the calibration mode, turn the rotary

switch to any one of the “Current Input/Voltage Output”

positions.

2 Connect the output terminals to a recommended

multimeter (refer to Table 7- 1 on page 131 for the

recommended test equipment).

Follow the steps below to perform calibration for the output

voltage ranges and values listed in Table 7- 6:

1 As you enter each calibration step, the primary and

secondary displays show the output current value and

“- rdy- ” respectively.

2 Press OUTPUT. The primary and secondary displays show

the output current value and “00000” respectively, which

means the present output level is as shown on the

primary display.

3 Press or to adjust the output current until the

multimeter reading is the same as the value shown on the

primary display.

4 Press MODE to enter the next calibration step.

At the end of the last calibration step, the primary display

will show “PASS” after the MODE button is pressed.

Table 7 - 6 Output current calibration steps

Current range

Calibration

step Output current value

25 mA

1 +00.000 mA

2 +11.000 mA

3 –11.000 mA