Tutorial

Programming DC Output

DC Voltage

Setting the DC voltage

The DC output voltage is controlled with the VOLTage:OFFSet command. Prior to programming the output, it is recommended that the appropriate output mode and voltage range be selected.

The following is an example using the PCR-M.

:OUTPut:COUPling DC 'Sets the output mode to DC mode

:VOLTage:RANGe 135 'Sets the voltage range to the 135V range

:VOLTage:OFFSet 40 'Sets the DC voltage to 40 V

:OUTPut ON    'Turns the output on

Once the power supply output is enabled (turned on), output mode and voltage range settings cannot be changed. On the other hand, the VOLTage:OFFSet setting can always be changed while the output is on.

Setting the DC voltage limit

The maximum allowable value for VOLTage:OFFSet also varies depending on the VOLTage:RANGe setting. The minimum and maximum allowable values for VOLTage:OFFSet command may vary depending on the VOLTage:OFFSet:LIMit settings.

:VOLTage:RANGe 135 'Sets the voltage range to the 135V range

:VOLTage:OFFSet:LIMit MAX 'Sets the voltage upper limit to 388 V

:VOLTage:OFFSet:LIMit:LOWer MIN 'Sets the voltage lower limit to -388 V

:VOLTage:OFFSet 40 'Sets the DC voltage to 40 V

Above example expands the upper/lower limits to the widest span allowing the VOLTage:OFFSet to be set to any value within the given range.

When the VOLTage:RANGe is set to 135 V, VOLTage:OFFSet setting cannot exceed +/-194.0 V. The VOLTage:RANGe specifies the voltage range using the AC voltage expression. The allowable DC voltage range for the 135 V range is +/-194.0 V, and that for the 270 V range is +/-388.0 V.

By *RST default, the :VOLTage:OFFSet:LIMit:LOWer setting is not set to its MINimum. It is set to 0 for operational safety.

Query

To query the maximum and minimum allowed values for the VOLTage:OFFSet command, use the query with the MINimum and/or MAXimum parameters.

:VOLTage:OFFSet? MINimum

:VOLTage:OFFSet? MAXimum

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