Tektronix DPO4000 Uživatelský manuál stáhnout pdf (Strana 22)

100

101

Command Groups

Alias Command

Group

Use the Alias commands to deﬁne new commands as a sequence of standard

commands. You may ﬁnd this useful when repeatedly using the same commands

to perform ce

rtain tasks like setting up measurements.

Aliases are similar to macros but do not include the capability to substitute

parameters

into alias bodies. The alias mechanism obeys the following rules:

The alias name must consist of a valid IEEE488.2 message unit, which may

not appear

in a message preceded by a colon, comma, or a command or query

program header.

The alias

name may not appear in a message followed by a colon, comma,

or question mark.

An alias

name must be distinct from any keyword or keyword short form.

An alias name cannot be redeﬁned without ﬁrst being deleted using one of

the ali

as deletion functions.

Alias names do not appear in response messages.

Table

2-14: Alias Commands

Command Description

ALIa

Sets or returns the alias s tate

ALIas:CATalog? Returns a list of the currently deﬁ ned alias

labels

ALIas:DEFine

Assigns a sequence of program messages

to a

n a lias label

ALIas:DELEte

moves a speciﬁed alias

ALIas:DELEte:ALL Deletes all existing aliases

ALIas:DELEte[:NAMe]

Removes a speciﬁed alias

ALIas[:STATE] Sets or returns the alias s tate

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