4-3-1. GPIB Specifications
Standard : IEEE Standard 488-1978
Codes used : ASCII
Logic level : Logic 0: High, +2.4 V or higher
Logic 1: Low, +0.4 V or lower
Signal line terminal : The 16 bus lines are terminated as shown below.
4-3. Specifications
Fig. 4-2 Signal line termination
: Open collector type
Low output voltage : +0.4 V or lower, 48 mA
High output voltage : +2.4 V or higher, —5.2 mA
: Low state : +0.6 V or lower
High state : +2.0 V or higher
Bus cable length : The total bus cable length must be (the number of
devices connected to the bus) x 2 m or less, not ex
ceeding 20 m.
Address specifications: Any of 31 talk/listen addresses can be set by operat
ing the address selector switch on the rear panel.
TALK ONLY mode can also be specified.
Connector : 24-pin GPIB connector
57LE - 20240 - 77COD3591
(manufactured by D.D.K.)
Driver
Receiver
4-3
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