Measurement-computing Analyzer488 Instrukcja Użytkownika Pobierz pdf (Strona 165)

Section 4 Serial Controller

4.71

SET TRIGGER

The

SET TRIGGER

command is used to configure one or more triggering

parameters used in recording bus events.

There is an interaction between the

RECORD

and the

SET TRIGGER

commands. If Triggering is disabled (by issuing the

SET TRIGGER OFF

command),

recording will begin upon receipt of the

RECORD ON

command and will stop upon

receipt of the

RECORD OFF

command.

If Triggering is enabled (by issuing the

SET TRIGGER ON

command),

recording will begin upon receipt of the

RECORD ON

command. If

WHEN

COMPLETE STOP

is selected, recording will stop when

match count

occurrences

match

have occurred,

trig delay

events have occurred, and

post count

events have occurred.

WHEN COMPLETE STEP

is selected, recording will remain on until the

RECORD OFF

command is received. For each bus event, the

post count

value

returned by the

STATUS 4

and

STATUS 5

commands will be incremented.

The query option,

SET TRIGGER?

returns all current trigger parameters.

TYPE Record command

SYNTAX

SET

TRIGGER{[?]|[ON|OFF][MATCH[state][line][byte]]

[# OF MATCHES[match count]][TRIG DELAY[delay]]

[POST COUNT[post count]]

[WHEN COMPLETE [STEP|STOP]]}

RESPONSE None

REMARKS The following parameters may be set:

[

OFF

]

Enables or disables triggering.

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