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S:\agilent\8920\8920b\PRGGUIDE\BOOK\CHAPTERS\usehpib.fb
Chapter 1, Using GPIB
IEEE 488.1 Remote Interface Message Capabilities
IEEE 488.1 Remote Interface Message Capabilities
The remote interface message capabilities of the Test Set and the associated IEEE
488.1 messages and control lines are listed in
Table 6.
Table 6 Test Set IEEE 488.1 Interface Message Capability
Message Type Implemented Response
IEEE
488.1
Message
Data Yes All front-panel functions, except those listed in Table 4
on page 47, are programmable. The Test Set can send sta-
tus byte, message and setting information. All measure-
ment results (except dashed “- - - -” displays) and error
messages are available through the bus.
DAB
END
MTA
MLA
OTA
Remote Yes Remote programming mode is entered when the Remote
Enable (REN) bus control line is true and the Test Set is
addressed to listen. The R annunciator will appear in the
upper-right corner of the display screen when the Test Set
is in remote mode. All front-panel keys are disabled
(except for the LOCAL key, POWER switch, Volume con-
trol and Squelch control knobs). When the Test Set enters
remote mode the output signals and internal settings
remain unchanged, except that triggering is reset to the
state it was last set to in remote mode (Refer to “Trigger-
ing Measurements” on page 224).
REN
MLA
Local Yes The Test Set returns to local mode (full front-panel con-
trol) when either the Go To Local (GTL) bus command is
received, the front-panel LOCAL key is pressed or the
REN line goes false. When the Test Set returns to local
mode the output signals and internal settings remain
unchanged, except that triggering is reset to
TRIG:MODE:SETT FULL;RETR REP. The LOCAL key
will not function if the Test Set is in the local lockout
mode.
GTL
MLA
Local Lockout Yes Local Lockout disables all front-panel keys including the
LOCAL key. Only the System Controller or the POWER
switch can return the Test Set to local mode (front-panel
control).
LLO