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Maximum Voltages for Each Range: The absolute maximum voltages for each range are shown in the next table. The values are approximately 98% of full scale.
Voltage Range | Max DC Voltage (absolute value) |
|
|
0.0625 | 0.061256409 |
|
|
0.2500 | 0.245025635 |
|
|
1.0000 | 0.980102539 |
|
|
4.0000 | 3.920410156 |
|
|
16.0000 | 15.68164062 |
|
|
64.0000 | not used |
|
|
256.0000 | not used |
|
|
Specifying Parameters: 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.
Executable when initiated: NO
Coupled Command: NO
Reset (*RST) Condition: None
CALibration:SOURce
CALibration:SOURce INTernal EXTernal specifies the calibration source to be used for any subsequent gain calibrations. “EXTernal” is the default source and a voltage must be provided from an external source to the channel being calibrated.
Comments INTernal Source: The INTernal source is available only on the E1564A
Measuring Calibration Voltage: From the Calibration Bus Output connector, 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.
Chapter 3 | Digitizers Command Reference 57 |