EXFO FTB-7000 OTDR Series for FTB-500 - Handbuch (Seite 363)

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>