Specifications

98 Action Summary Chapter 5
dmmMeasureTrigVoltage Configures the Agilent E1411 or Agilent 34401 DMM to measure a DC
voltage, triggered by a VXI backplane TTL signal (Agilent E1411 only) or
External signal.
SM2040 Actions
SM2040AnalogTrigRead This function will arm the DMM, wait for an analog trigger, and return an
array of measurements for the internal DMM buffer. Use the Abort button or
a timeout value to prevent the measurement from waiting forever on a
trigger. A return code of 99 indicates the abort condition and a return code
of 88 indicates a timeout condition.
SM2040ArmAnalogTrigger Setup the SM2040 for analog level trigger operation. Following reception of
this command the DMM makes measurements continuously, waiting for a
value which exceeds the threshold. Use SM2040ReadBuffer to get results.
SM2040ArmTrigger Setup the SM2040 for external hardware trigger operation. Following
reception of this command the DMM enters a wait state. Use
SM2040ReadBuffer to get results.
SM2040BurstRead This function is designed to read bursting measurements from the DMM,
resulting from SM2040SetTrigRead and SM2040SetBurstRead operations.
Set 'numReadings' to be number of settle samples + 1 + number of samples
to take.
SM2040Cal This function re-calibrates the DMM, and returns it to the current operating
mode. This is an internal calibration.
SM2040ConfigureMeasurem
ent
Sets the function, range, and rate to the selected values.
SM2040GetInfo Returns the hardware and software versions as well as the type of card.
SM2040Read SM2040Read reads the next result from the DMM. This routine can read all
the Primary functions (those that can be selected using
SM2040ConfigureMeasurement)
SM2040ReadBuffer This function wait for a trigger, and return an array of measurements from
the internal DMM buffer. Use the Abort button or a timeout value to prevent
the measurement from waiting forever on a trigger. A return code of 99
indicates the abort condition and a return code of 88 indicates a timeout
condition.
SM2040SetAutoRange This function enables or disables autorange operation of the DMM.
SM2040SetBuffTrigRead Setup the DMM for multiple triggered readings operation.
SM2040SetBurstRead This function will set up the DMM to read bursting measurements.
SM2040SetFunction Sets the DMM function to the selected value.
SM2040SetRange Sets the DMM range to the selected value.
SM2040SetRate Sets the DMM rate to the selected value.
SM2040SetRelative Sets or clears the relative reading mode.
SM2040SetSynchronized This function enables or disables the Synchronized operation of the DMM.
Default operation is non-synchronized. Select the Synchronized mode when
it is necessary to settle full scale input transitions from one reading to the
next, and maintain the accuracy of the DMM. This is appropriate for VDC,
Ohms, Leakage, DCI, Diode and Guarded Ohms. The result of the
synchronized mode is a reduced measurement rate. To run synchronized,
reading rate must be set to 10 rps or higher.
SM2040SetTrigRead Setup the DMM for multiple triggered readings operation.
SM2040TrigRead This function will arm the DMM, wait for a trigger, and return an array of
measurements for the internal DMM buffer. Use the Abort button or a
timeout value to prevent the measurement waiting forever for a trigger.
Table 5-6. DMM Actions
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