Keysight E1412A Digital Multimeter User Guide
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E1412A Multimeter Application Examples
Keysight E1412A Multimeter Application Information
Multimeter Status System Examples
There are two program examples that demonstrate how the E1412A Multimeter
status system works. In both programs the status byte is repeatedly read to
identify when actions by the Multimeter set the appropriate bit in the status byte.
The computer can identify when readings are available by monitoring the status
byte and can retrieve readings when they are available.
Figure 2-5 illustrates the E1412A status system. A Questionable Data Register,
an Output Buffer and a Standard Event Register each have a respective status bit
in the Status Byte Register. The Output Buffer sets the MAV bit when there is
data available such as measurement readings or a response to a SCPI query
command. The Questionable Data Register and Standard Event Register require
you to “unmask” the bits you want to be OR'd into a summary bit which sets the
respective bit in the Status Byte. You must also “unmask” the status bits you
want OR'd into a summary bit to set the Service Request bit (SRQ) if you want to
generate an interrupt. The example programs illustrate this requirement.
Summary of Contents for E1412A
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