Aim TSX-P Series Bedienungsanleitung Seite 14

Before a response can be read from an instrument it must be addressed to talk by sending the
Talk Address control code, 14H (TAD) followed by a single character which has the lower 5 bits
corresponding to the unique address of the required instrument, as for the listen address control
code above. Once addressed to talk the instrument will send the response message it has
available, if any, and then exit the talk addressed state. Only one response message will be sent
each time the instrument is addressed to talk.
Talk mode will be cancelled by any of the following interface control codes being received:
Talk mode will also be cancelled when the instrument has completed sending a response
message or has nothing to say.
The interface code 0AH (LF) is the Universal Command and response Terminator (UCT); it must
be the last code sent in all commands and will be the last code sent in all responses.
The interface code 0DH (CR) may be used as required to aid the formatting of commands; it will
be ignored by all instruments. Most instruments will terminate responses with CR followed by LF.
The interface code 13H (XOFF) may be sent at any time by a listener (instrument or controller) to
suspend the output of a talker. The listener must send 11H (XON) before the talker will resume
sending. This is the only form of handshake control supported by ARC.
ARC Interface Control Code List
02H
03H
04H
06H
0AH
0DH
11H
12H
13H
14H
18H
GPIB Interface
The 24-way GPIB connector is located on the instrument rear panel.
The pin connections are as specified in IEEE Std. 488.1-1987 and the instruments in the range
comply with IEEE Std. 488.1-1987 and IEEE Std. 488.2-1987 and contain the following IEEE
488.1 subsets.
12H LAD Listen Address for any instrument.
14H TAD Talk Address followed by an address not
belonging to this instrument.
03H UNA Universal Unaddress control code.
04H LNA Lock Non-Addressable mode control code.
18H UDC Universal Device Clear.
SAM Set Addressable mode.
UNA Universal Unaddress control code.
LNA Lock Non-Addressable mode control code.
ACK Acknowledge that listen address received.
UCT Universal Command and response Terminator.
CR Formatting code, otherwise ignored.
XON Restart transmission.
LAD Listen Address - must be followed by an address belonging to
the required instrument.
XOFF Stop transmission.
TAD Talk Address - must be followed by an address belonging to the
required instrument.
UDC Universal Device Clear.
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