Unassert – Measurement Computing Analyzer488 User Manual

Page 183

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Section 4

Serial Controller

4.89

UNASSERT

The UNASSERT command unasserts one or more bus management and/or data

lines. Data line parameters may be specified following the keyword DATA in Binary
(%01001010) (all eight digits must be specified), Decimal (122), Hexadecimal
(&H3F) (both digits must be specified), or ASCII ('A). If UNASSERT ALL is issued
while the Analyzer488 is in the TALK state, all data and management lines will be
unasserted.

This command does not have a query option.

TYPE

Low Level Controller command

SYNTAX

UNASSERT {[line][ALL]DATA[<data>]}
ALL unasserts all lines
line

is one of: SRQ, ATN, EOI, IFC, or REN

data is numeric data in Binary, Decimal, Hexadecimal, or ASCII

RESPONSE

None

MODE

Low Level Controller

BUS STATES

Bus states are defined by the usage of the commands.

QUERY

None

RESPONSE

EXAMPLES

PRINT#1,"ASSERT IFC"

Pulse IFC line

PRINT#1,"UNASSERT IFC"

Similar to ABORT command

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