Tutorial

Programming AC Output

AC Voltage and Frequency

Setting the AC voltage and frequency

The AC output voltage and frequency are controlled with the VOLTage and FREQuency commands. 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 AC 'Sets the output mode to AC mode

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

:VOLTage 110 'Sets the AC voltage to 110 V

:FREQuency 55 'Sets the frequency to 55 Hz

:OUTPut ON    'Turns the output on

Setting the AC voltage limit and frequency limit

The maximum allowable value for VOLTage varies depending on the VOLTage:RANGe setting.

The minimum and maximum allowable values for VOLTage and FREQuency commands may vary depending on the VOLTage:LIMit and FREQuency:LIMit settings.　The VOLTage and FREQuency settings must be specified within the upper and lower limits.

The voltage limit and frequency limit settings are safety interlock functions that prevent unexpected miss-operation or miss-programming. They are not output limiting functions.

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

:VOLTage:LIMit MAX 'Sets the voltage upper limit to 275 V

:VOLTage:LIMit:LOWer MIN 'Sets the voltage lower limit to 0 V

:VOLTage 110 'Sets the AC voltage to 110 V

:FREQuency:LIMit MAX 'Sets the frequency upper limit to 500 Hz

:FREQuency:LIMit:LOWer MIN 'Sets the frequency lower limit to 40 Hz

:FREQuency 55 'Sets the frequency to 55 Hz

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

When the VOLTage:RANGe is set to 135 V, VOLTage setting cannot exceed 137.5 V.

Query

To query the maximum and minimum allowed values for the VOLTage and FREQuency commands, use the query with the MINimum and/or MAXimum parameters.

:VOLTage? MINimum

:VOLTage? MAXimum

:FREQuency? MINimum

:FREQuency? MAXimum

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