prog.book : ch15ieee.fm 3 Mon Feb 15 09:24:37 1999
IEEE488.2 Command Reference
Universal Commands
HP E4418B/E4419B Programming Guide 15-3
Universal Commands
DCL
The DCL (Device Clear) command causes all HP-IB instruments, or
addressed instruments, to assume a cleared condition. The definition of
device clear is unique for each instrument. For the power meter:
• All pending operations are halted, that is, *OPC? and *WAI.
• The parser (the software that interprets the programming codes)
is reset and now expects to receive the first character of a
programming code.
• The output buffer is cleared.
For further information refer to “Using Device Clear to Halt
Measurements”, on page 1-92.
GET
The GET (Group Execute Trigger) command triggers all channels that are
in the “wait-for-trigger” state.
Using the *DDT command may change the function of the GET command.
Error Message
If TRIGger:SOURce is not set to BUS then error -211, “Trigger ignored”
occurs.
If the power meter is not in the “wait-for-trigger” state then error -211,
“Trigger ignored” occurs.
GTL
The GTL (Go To Local) command is the complement to remote. It causes
the power meter to return to local control with a fully enabled front panel.
When reverting to local mode the power meter triggering is set to free run.
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