Exfo FTB-7000 OTDR Series for FTB-500 Uživatelský manuál stáhnout pdf (Strana 363)

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SCPI-Befehlsreferenz

OTDR 349

Product-Specific Commands—Description

:CALCulate[1..n]:LOSS?

Description This query returns the loss between two markers

measured by least-square approximation, for the

trace corresponding to the specified trace index.

*RST clears this value.

Syntax :CALCulate[1..n]:LOSS?<wsp>TRC1|TRC2|TRC

3|TRC4,<MarkerA>,<MarkerB>

Parameter(s)

³ Label:

The program data syntax for the first parameter is

defined as a <CHARACTER PROGRAM DATA>

element. The allowed <CHARACTER PROGRAM

DATA> elements for this parameter are:

TRC1|TRC2|TRC3|TRC4.

Trace index of the available wavelengths.

³ MarkerA:

The program data syntax for <MarkerA> is

defined as a <DECIMAL NUMERIC PROGRAM

DATA> element.

Specifies the marker A position, in meters.

³ MarkerB:

The program data syntax for <MarkerB> is

defined as a <DECIMAL NUMERIC PROGRAM

DATA> element.

Specifies the marker B position, in meters.

Response Syntax <Loss>

1 2 ... 358 359 360 361 362 363 364 365 366 367 368 ... 492 493

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Exfo FTB-7000 OTDR Series for FTB-500 Uživatelský manuál Strana 363

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