Additional Hp-Ib Information; Abort; Trigger; Status Bit - HP 8642A Operating Manual

Model 8642A/B Operation
ADDITIONAL HP-IB INFORMATION
Abort
Abort abruptly terminates all listener/talker activity on the interface bus, using the Interface Clear (IFC)
bus line, and prepares all instruments to receive a new command from the controller. Typically this is an
initialization command used to place the bus in a known starting condition. The Signal Generator stops
talking or listening when it receives the Abort message.
Trigger
The Signal Generator does not respond to the Trigger message.
Status Bit
The Signal Generator does not implement parallel poll operations and therefore cannot send a Status Bit
message.
Controller Capabilities; Self Test and Calibration
The Signal Generator can be configured as a system controller to perform various self-test and
self-calibration routines with a system voltmeter and the HP 8902A Measuring Receiver (and an optional
printer). Refer to Section IV in the Service Manual for a detailed description of these routines.
Display Control Via HP-IB
Selecting the ["SHIFT I key twice when in the local mode will display the instrument settings last selected.
In the remote mode, you can send SHSH to achieve this same effect. (This may be useful when outputting
display information.)
Remote Indicators
The Signal Generator displays HP-IB annunciators to indicate its current HP-IB status:
RMT When remote operation is selected
LSTN When addressed to listen
TLK When addressed to talk
SRQ When pulling the SRQ line (with the RQS bit set in the Status Byte)
Disabling the Listen Addressed State
The Signal Generator remains addressed to listen until:
It is addressed to talk,
It receives an abort message,
It receives a universal unlisten command, or
Until the Power is switched from Standby to On.
Disabling the Talk Addressed State
The Signal Generator remains addressed to talk until:
It is addressed to listen,
It receives an abort message,
It receives some other device's talk address,
It receives a universal untalk command, or
Until the Power is switched from Standby to On,
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