HP 8642A Operation And Calibration Manual

Model 8642A/B
Operation
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ADDITIONAL HP -18 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 cOlltroller. Typically this is an
initialization command used to place the bus ill a known starting conditioll. 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 syst~m 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) 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 inf orma tion.)
Remote Indicators
The Signal Generator displays HP-lB 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 Genera tor remains addressed to listen un til:
It is addressed to talk,
It recei ves 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 Gellerator remains addressed to talk until:
It is addressed to listen,
It recei ves a n a
bort message,
It receives some other device's talk acldress,
It receives a universal untalk command, or
Until the l'llwer is switched from Standby to On
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HP 8642A Specifications

General

Brand	HP
Model	8642A
Category	Inverter
Language	English