Technical data

Performance Tests and Calibration 7
U1401A User’s and Service Guide 141
After finishing the CAL-0 and CAL-1 calibration procedures,
the instrument will automatically enter the 1.5 V output
calibration mode.
Output voltage calibration
Follow the steps below to perform calibration for the output
voltage ranges and values listed in Table 7- 5:
1 As you enter each calibration step, the primary and
secondary displays show the output voltage value and
“- rdy- ” respectively.
2 Press OUTPUT. The primary and secondary displays show
the output voltage value and “00000” respectively, which
means the present output level is as shown on the
primary display.
3 Press or to adjust the output voltage 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 - 5 Output voltage calibration steps
Voltage range
Calibration
step
Output voltage value
1.5 V
1 +0.0000 V
2 +1.1000 V
3 –1.1000 V
15 V
4 +00.000 V
5 +11.000 V
6 –11.000 V
5
6