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Chapter 5
6.
Send the group execute trigger message (GET) to trigger a measurement
reading. The GET message is represented by the hex value 8.
gpib0:
[0138] (cmpl cic atn tacs)
count: 1
7.
Wait for the DVM to set SRQ or wait for a timeout. If the current timeout
limit is too short, use ibtmo to change it.
gpib0:
[1138] (srqi cmpl cic atn tacs)
8.
Set up the device for a serial poll. The question mark (?) and underscore
( _ ) characters represent the unlisten (UNL) and untalk (UNT) characters,
respectively, and reset the bus addressing. The underscore ( _ ) represents
the listen address of the Controller. The hex value 18 represents the serial
poll enable function, while A represents the talk address of the device.
gpib0:
[1174] (srqi cmpl rem cic atn lacs)
count: 5
© National Instruments Corp.
ibic—Interface Bus Interactive Control Utility
ibcmd "\x08"
ibwait (TIMO SRQI)
ibcmd "?_ \x18A"
5-33
NI-488.2M SRM for OS/2
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