Calibrating for Readback Accuracy
TM-F1OP-C1XN-01 5-7
Output Voltage Monitor Circuit Calibration
To perform output voltage monitor circuit calibration:
1. Ensure that the power supply is turned OFF. Disconnect any load.
2. Set SW1 switch 5 OPEN to select 0-5 V output voltage monitor
range, CLOSED for 0-10 V.
3. Connect a DVM across the power supply output to read the output
voltage. Connect a second DVM between the rear panel J2 connector
terminals 10 (output voltage monitor) and 9 (voltage monitor signal
return).
4. Turn the power supply ON.
5. Set the power supply output voltage to 1% of the model-rated output.
6. Adjust the output voltage monitor offset (R397) until the monitor
DVM reads 1% of the readback scale. (50 mVdc for 0-5 V readback
or 100 mVdc for 0-10 Vdc readback.)
7. Set the power supply output voltage to the model-rated maximum.
8. Adjust the output voltage monitor range (R387) until the monitor
DVM reads 100% of the readback scale. (5 Vdc for 0-5 V readback or
10 Vdc for 0-10 Vdc readback.)
Repeat this procedure until the monitor signal is adjusted to specifications
(see “Specifications”) or to the accuracy that your application requires.
TM-F1OP-C1XN-01.book Page 7 Thursday, October 25, 2007 9:04 PM
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