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Voltage adjustment – HP E1418A User Manual

Page 158

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Voltage Adjustment

Voltage output adjustment uses two of the

CALibration

subsystem queries.

CALibration

n

:CONFigure:VOLTage?

CALibration

n

:VALue:VOLTage?

The general procedure for channel voltage adjustment is:

1. Make the connections shown in Figure D-2 or D-3.

2. Send the

CALibration

n

:CONFigure:VOLTage?

query to the module

and read the response until a 1 is returned (typically the first query
response).

3. Read the voltage output on the DMM.

4. Send the DMM value read with the

CALibration

n

:VALue:VOLTage?

query.

5. Enter the query response.

6. Repeat steps 3, 4, and 5 until the

CALibration

n

:VALue:VOLTage?

query returns a 0.

7. Repeat steps 1 through 6 for each channel.

The first query,

CALibration

n

:CONFigure:VOLTage?

, sets the channel to the

calibration mode and returns a 1 when the channel is ready for calibration.
When a 1 is returned, the channel output voltage is set to the first
adjustment point.

Read the output voltage on the DMM and return the value obtained using
the

CALibration

n

:VALue:VOLTage?

query. This query returns an integer

indicating the calibration state of the channel. Any non-zero return from
this query indicates additional values are needed.

Each channel will require multiple iterations of the

CALibration

n

:VALue:VOLTage?

query. A minimum of 9 queries, to a

maximum of 50 queries, will be required at each channel. During the
process, the output voltage will range from +16 V to -16 V and the last
values output will be at or near 0 volts.

157 Voltage/Current Output Adjustment

Appendix D

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