Ametek 1251RP Series, User And Programming Manual

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March 2011 RP Series
70
The power source has two voltage ranges that are controlled by a relay. The command that
controls the range is:
VOLTage:RANGe 136 | 272
When the range is set to (136), the maximum rms voltage that can be programmed is 136
volts rms, but it is only on this range that the maximum output current rating is available.
The VRANGe command is coupled with the CURRent command. This means that the
maximum current limit that can be programmed at a given time depends on the voltage
range setting in which the unit is presently operating.
Frequency
The output frequency is controlled with the FREQuency command. To set the output
frequency to 50 Hz, use:
FREQuency 50
Current Limit
To set the rms current limit use:
CURRent <n>
where <n> is the rms current limit in amperes.
If the load attempts to draw more current than the programmed limit, The AC source is
programmed to turn off its output if the rms current limit is reached.
Note: The CURRent command is coupled with the VOLTage:RANGe. This means
that the maximum current limit that can be programmed at a given time
depends on the voltage range setting in which the unit is presently
operating.
15.3. Making Measurements
The source has the capability to return current and voltage measurements.
Voltage and Current Measurements
To measure the rms voltage or current, use:
MEASure:VOLTage?
or
MEASure:CURRent?