Exfo IQS-3150 Variable Attenuator for IQS-500/600 Uživatelský manuál stáhnout pdf (Strana 113)

SCPI Command Reference

Variable Attenuator 107

Product-Specific Commands—Description

:INPut[1..n]:REFerence

Description This command sets, for the current wavelength,

a reference value for the attenuation. When the

instrument is used in Reference mode, the

attenuation configured with the

INPut[1..n]:RATTenuation command is relative to

this reference value. This command will have no

effect when the instrument is used in Absolute or

X + B mode. This value it used only when the

ATTenuation control mode is active.

At *RST, the reference value that will be set

depends on the instrument you have.

Syntax :INPut[1..n]:REFerence<wsp><Reference

[<wsp>DB]>|MAXimum|MINimum|DEFault

Parameter(s) Reference:

The program data syntax for <Reference> is

defined as a <numeric_value> element

followed by an optional <SUFFIX PROGRAM

DATA> element. The allowed <SUFFIX

PROGRAM DATA> element is DB. The

<Reference> special forms MINimum,

MAXimum and DEFault are accepted on input.

MINimum allows to set the instrument to the

lowest supported value.

MAXimum allows to set the instrument to the

highest supported value.

DEFault allows the instrument to select a value

for the <Reference> parameter.

The <Reference> parameter represents the new

reference value.

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Exfo IQS-3150 Variable Attenuator for IQS-500/600 Uživatelský manuál Strana 113