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8-3
IM 704610-01E
8
GP-IB Commmunications
8.2
GP-IB Interface Functions and Specifications
GP-IB Interface Functions
Listener Function
• This function allows you to perform the same
settings that can be carried out using the panel keys
(except for turning the power ON/OFF and entering
communication settings).
• The instrument can receive commands output from
a controller, such as settings and measured data.
• Commands concerning status reports can also be
received.
Talker Function
Outputs setup information, measured data, and other
information.
Note
Talk-only, listen-only, and controller functions are not available
on this instrument.
Switching between Remote and Local
When switching from local to remote mode
Receiving a REN (Remote Enable) message from the
controller when the instrument is in local mode causes
the instrument to switch to remote mode.
• The REMOTE indicator (see section 1.2)
illuminates.
• All keys other than LOCAL are locked.
• The settings that existed in local mode are
maintained even when the instrument switches to
remote mode.
When switching from remote to local mode
Pressing LOCAL when the instrument is in remote
mode causes the instrument to switch to local mode.
However, this act is invalid if the instrument has been
set to Local Lockout mode (see section 8.5) by the
controller.
• The REMOTE indicator turns OFF.
• Key operations are enabled.
• The settings that existed in remote mode are
maintained even when the instrument switches to
local mode.
GP-IB Interface Specifications
• Electrical and Mechanical Specifications
Conforms to IEEE St’d 488-1978
• Functional Specifications
See chart below
• Encoding
ISO (ASCII)
• Mode
Addressable mode
• Address Setting
A setting between 0 and 30 can be entered for the
GP-IB address setting in the Utility menu (see
section 8.4).
• Clear Remote Mode
You can press LOCAL to clear remote mode.
However, key operation is disabled when under
Local Lockout by the controller.
Function
Subset Name
Description
Source handshake
SH1
All functions for sending
handshake
Acceptor handshake
AH1
All functions for receiving
handshake
Talker
T6
Basic talker function,
serial polling, untalk on
MLA (My Listen Address),
and no talkonly function
Listener
L4
Basic listener function,
MTA (my talk address)
listener resetting, no listen
only function
Service request
SR1
All functions for service
request
Remote local
RL1
All functions for remote/
local
Parallel poll
PP0
No parallel poll functions
Device clear
DC1
All functions for device
clear
Device trigger
DT1
Full device trigger
capability
Controller
C0
No controller functions
Electrical characteristics E1
Open collector