Interface Messages; Interface Function Subsets; Recovering From A "Bus-Hung" Condition; Remote Messages - ILX Lightwave FPM-8200 User Manual

Interface Messages

Interface messages manage the bus, and are mostly transparent to your GPIB
programs. You usually will not need this information except for questions of FPM-
8200 compatibility with a specific GPIB controller.

Interface Function Subsets

The following Interface Function Subsets are supported by the FPM-8200. For
more information, refer to the ANSI/IEEE-488 standard documentation.
SH1
AH1
T6
L4
SR1
RL1
The following Interface Function Subsets are not supported by the FPM-8200:
PP0
DC0
DT0
C0
E1, E2

Recovering From a "Bus-Hung" Condition

GPIB instruments can occasionally get confused as a result of an unrecognizable
or incomplete command. This can happen for various reasons, such as untimely
interrupts in the controller's operating system software. When this happens, an
instrument can get into a state where it no longer responds to controller
commands. In some of these situations, the FPM-8200 does not fully reset in
response to an Interface Clear (IFC) line or a DC1 (device clear) command. To
recover from such a condition, it is normally necessary to turn the FPM-8200
power OFF for 10 seconds, then back ON.

Remote Messages

The following GPIB remote messages are compatible with the FPM-8200:
ACG
ATN
DAB
DAC
01_10
Source Handshake
Acceptor Handshake
Talker Functions
Listener Functions
Service Request
Remote Local Function
Parallel Poll
Device Clear
Device Trigger
Controller Function
Tri−state bus drivers with automatic switch
to open collector during Parallel Poll
DAV IFC MTA
END LAG OTA
GTL LLO PCG
IDY MLA REN
R E M O T E O P E R A T I O N
Interface Messages
RFD SPD TAG
RQS SPE UCG
SCG SRQ UNL
SDC STB UNT
3
C H A P T E R
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FPM-8200
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