Terminators - HP 8112A Operating, Programming And Servicing Manual

Abbreviations used in
this Document

Terminators

Note
EOL
End of Line Sequence (used for termination).
Sequence
Character( s) at the end of a line or message
EOI Signal End-or-Identify Signal (separate HP-IB signal line used
for terminating a message)
carriage-return; ASCII character with the ASCII-code
CR
13
current settings command (used to read the current
CST
instrument state)
LF line-feed; ASCII character with the ASCII-code 10
STB Status Byte Register
RQS Request Service Bit
Service Request
SRQ
Serial Poll (used to determine whether a device is
SPOLL
requesting service; returns the value of the Status Byte
Register)
Parallel Poll (not supported by the HP 8 1 12A)
PPOLL
ASCII string returned after a CST command; contains
Learn
String all necessary commands to set the HP 81 12A to its
present state. The Learn String may later be sent back
to the device to place it in this state.
The HP 81 12A accepts the following terminators:
•
CR/LF (the default EOL sequence)
•
EOI only
•
CR/LF and EOI
•
LF and EOI
LF alone is not accepted
connected to a HP9000 Series 200/300 controller. When connected to
other controllers, the HP 81 12A may accept J,F as terminator.
The HP 81 12A itself, terminates a data message sent to the computer
with:
CR/LF followed by a SPACE character
The EOI line is not polled by the HP 81 12A.
as
terminator when the HP 81 12A is
Programming 6-3