Microtest 6378 - GPIB Interface Control; GPIB Control Overview

6–1
6. GENERAL PURPOSE INTERFACE BUS (GPIB)
6.1 GPIB Control
6.1.1 Introduction
The GPIB is a parallel port designed to be used for communication between instruments
(listeners) and control devices (talkers) such as PCs fitted with a suitable interface card. The
interface protocol is defined by the IEEE488.1 standard. Some additional generic capabilities of
the listeners and talkers are defined by IEEE488.2. The SCPI standard defines the highest level
of command structure including a number of standard commands for all instruments.
6.1.2 Interface Specification
The IEEE 488.1 bus standard and the IEEE 488.2 code standard are fully supported. The
command set has also been designed to the SCPI standard.
The IEEE 488.1 functions supported
SH1
Full source handshake
AH1
Full acceptor handshake
T6
Basic talker, serial poll, no talk only, untalk if MLA
TE0
No talker with secondary addressing
L4
Basic listener, no listen only, unlisten if MTA
LE0
No listener with secondary addressing
SR1
Full service request
DC1
Full device clear
RL1
Full remote/local compatibility
PP0
No parallel poll
DT1
Full device trigger compatibility
C0
No controller
6.1.3 Changing GPIB Address
Each instrument on the GPIB requires a unique address, this can be set to any address in the
range 0 to 30.
The default address is 6. This may be changed from the STATUS page, as follows:
1) From the MAIN MENU select STATUS.
2) Highlight the status page GPIB address parameter with the and navigation keys.
3) Alter the address with the data entry keypad.