EXFO T200S, User Manual, Page: 123 / 146

SCPI Command Reference
Tunable Laser Source
117
T200S Specific Commands
[SOURce]:WAVelength[:CW|FIXed]:STEP[:WIDTh]
Description
This command sets the step size used to select the relative
wavelength of a non-swept signal.
You can perform relative wavelength tuning through the
command
[SOURce]:WAVelength[:CW|FIXed]
on page 115 with
the UP/DOWN keywords.
At *RST, this value is set to DEFault.
Syntax
[:SOURce]:WAVelength[:CW|FIXed]:STEP[:WIDTh]<wsp>
<step>[<unit>]|MAXimum|MINimum|DEFault|UP|DOWN
Parameter(s)
³
step
:
Value corresponding to the step in meters (if no unit is
specified).
To know the valid wavelength range, use the query
[SOURce]:WAVelength[:CW|FIXed]:STEP[:WIDTh]? on
page 118 (MIN and MAX parameters).
³
unit
:
Unit of the wavelength step: M preceded by a possible
multiplier. Possible multipliers are listed in
Unit Multipliers
on
page 52.
³
MAXimum
Sets the wavelength step to the maximum possible step value.
³
MINimum
Sets the wavelength step to the minimum possible step value.
³
DEFault
Sets the wavelength step to the default step value.
To know the default step, use the query
[SOURce]:WAVelength[:CW|FIXed]:STEP[:WIDTh]?
on
page 118 (DEF parameter).
Example(s)
SOUR:WAV:CW 1570 NM
SOUR:WAV:CW? returns 1.570000E-006
SOUR:WAV:CW:STEP 10 NM
SOUR:WAV:CW DOWN
SOUR:WAV:CW? returns 1.560000E-006
See Also
[SOURce]:FREQuency[:CW|FIXed]:STEP[:WIDTh]
on page 100
[SOURce]:WAVelength[:CW|FIXed] on page 115
[SOURce]:WAVelength[:CW|FIXed]:STEP[:WIDTh]? on page 118