HP E1563A, User Manual, Page: 50 / 166

50 Digitizer Command Reference
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Optional parameters that are left blank are filled from left to right. Therefore,
it is necessary to use the syntax DEFault to note that a particular parameter is
to use the default value. For example, to specify a sample rate other than the
default, you must declare DEFault for the <readings> parameter or the <rate>
parameter value you intended will be used to fill in the <readings> parameter.
The command for channel 1 would appear as: CAL:GAIN1 DEF,.002. If you
are calibrating the 16V range and you want to recalculate the 64V and 256V
calibration constants, the command is: CAL:GAIN1 DEF,.002,ON.
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Executable when initiated: No
•
Coupled Command: No
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Reset (*RST) Condition: None
SOURce
CALibration:SOURce INTernal | EXTernal specifies the calibration source to
be used for any subsequent gain calibrations. “EXTernal” is the default source, a
voltage must be provided from an external source to the channel being calibrated.
Note
The “INTernal” source is available only on the HP E1564A 4-Channel Digitizer.
CAL:SOURce INTernal outputs the specified DAC voltage set by CAL:DAC:VOLT
< voltage >
onto the calibration bus where it is applied internally to the channels. It
is also available on the top two pins of the front panel D-subminiature connector
where you must measure the voltage with a transfer standard (accurate voltmeter)
and enter the measured value using the
CAL:VALue
command. The calibration
gain command then sets calibration constants for the value you input assuming it is
the value on the calibration bus.
•
Executable when initiated: No
•
Coupled Command: No
•
Reset (*RST) Condition: EXTernal
:SOURce?
CALibration:SOURce? queries which calibration source is set. This setting is
shared by all channels. Returns either “INT” for INTernal or “EXT” for EXTernal.
16.0000 15.68164062
64.0000 not used
256.0000 not used
Voltage Range Max DC Voltage (absolute value)