EXFO T200S, Руководство пользователя, Страница: 121 / 146

SCPI Command Reference
Tunable Laser Source
115
T200S Specific Commands
[SOURce]:WAVelength[:CW|FIXed]
Description This command selects the absolute or relative wavelength of a
non-swept signal.
During the tuning of the emission wavelength, bit #1 (SETTling) is set in
the Operation Status Condition register (see Operational / Questionable
Status Reporting on page 48).
At *RST, this value is set to DEFault.
Syntax [:SOURce]:WAVelength:[CW|FIXed]<wsp><wavelength>
[<unit>]|MAXimum|MINimum|DEFault|UP|DOWN
Parameter(s)
³
wavelength :
Value corresponding to the emission wavelength in meters (if no unit
is specified).
To know the valid wavelength range, use the query
[SOURce]:WAVelength[:CW|FIXed]? on page 116 (MIN and MAX
parameters.
³
unit :
Unit of the emission wavelength: M preceded by a possible
multiplier. Possible multipliers are listed in Unit Multipliers on
page 52.
³
MAXimum
Sets the emission wavelength to the maximum possible wavelength
value, depending on the laser model.
³
MINimum
Sets the emission wavelength to the minimum possible wavelength
value, depending on the laser model.
³
DEFault
Sets the emission wavelength to the default wavelength value,
depending on the laser model.
To know the default wavelength, use the query
[SOURce]:WAVelength[:CW|FIXed]? on page 116 (DEF parameter).
³
UP
This parameter enables you to perform relative wavelength tuning: it
sets the emission wavelength one step up from the actual
wavelength value.
You can specify the step size with the command
[SOURce]:WAVelength[:CW|FIXed]:STEP[:WIDTh] on page 117.
³
DOWN
This parameter enables you to perform relative wavelength tuning: it
sets the emission wavelength one step down from the actual
wavelength value.
You can specify the step size with the command
[SOURce]:WAVelength[:CW|FIXed]:STEP[:WIDTh]
on page 117.
Example(s)
SOUR:WAV:CW 1570 NM
SOUR:WAV:CW? returns 1.570000E-006
See Also
[SOURce]:FREQuency[:CW|FIXed]
on page 98
[SOURce]:OPTimization:OLINewidth[:STATe] on page 107
[SOURce]:WAVelength[:CW|FIXed]? on page 116
[SOURce]:WAVelength[:CW|FIXed]:STEP[:WIDTh]
on page 117