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Chapter 8
GP-IB Interface
(3237-01/3238-01/3239-01)
Except for the power switch, all unit functions can be performed by remote
control through the optional GP-IB interface. The RS-232C and optional
GP-IB interfaces may not be used simultaneously. (That is, only one
interface may be used at any one given time.) For more information on
selecting between the RS-232C or GP-IB interface, see the section that
describes Section 8.1 "Preparing for Data Transfer."
Applicable standard: IEEE488.1 1987
Reference standard: IEEE488.2 1987
If the output queue is full, the 3237/38/39 issues a query error to clear it.
The instrument does not support output queue clear and query error output
functions in the deadlock state, as defined in the IEEE-488.2 standard.
(Deadlock state: Both input buffer and output queue are full, halting further
data processing.)
Repeatedly sending commands and receiving responses alternately may cause
the instrument to hang up depending on a GP-IB board or your system
configuration. If the instrument hangs up, turn it off, and then turn it on
again. To avoid this anomaly, set a wait time of 1 ms both before sending
commands and receiving responses.
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