EXFO T200S, User Manual, Page: 104 / 146

SCPI Command Reference
98
T200S
T200S Specific Commands
Commands and Queries
[SOURce]:FREQuency[:CW|FIXed]
Description
This command sets the absolute or relative frequency of a non-swept
signal.
During the tuning of the emission frequency, 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]:FREQuency:[CW|FIXed]<wsp><frequency>[<unit>]|
MAXimum|MINimum|DEFault|UP|DOWN
Parameter(s)
³
frequency
:
Value corresponding to the emission frequency in Hertz (if no unit is
specified).
To know the valid frequency range, use the query
[SOURce]:FREQuency[:CW|FIXed]? on page 99 (MIN and MAX
parameters).
³
unit :
Unit of the emission frequency: HZ preceded by a possible multiplier.
Possible multipliers are listed in Unit Multipliers on page 52.
³
MAXimum:
Sets the emission frequency to the maximum possible frequency
value, depending on the laser model.
³
MINimum:
Sets the emission frequency to the minimum possible frequency
value, depending on the laser model.
³
DEFault:
Sets the emission frequency to the default frequency value, depending
on the laser model.
To know the default frequency, use the query
[SOURce]:FREQuency[:CW|FIXed]? on page 99 (DEF parameter).
³
UP:
This parameter enables you to perform relative frequency tuning: it
sets the emission frequency one step up from the actual frequency
value.
You can specify the step size with the command
[SOURce]:FREQuency[:CW|FIXed]:STEP[:WIDTh] on page 100.
³
DOWN:
This parameter enables you to perform relative frequency tuning: it
sets the emission frequency one step down from the actual frequency
value.
You can specify the step size with the command
[SOURce]:FREQuency[:CW|FIXed]:STEP[:WIDTh]
on page 100.
Example(s)
SOUR:FREQ:CW 197.5 THZ
SOUR:FREQ:CW? returns 1.014
See Also
[SOURce]:FREQuency[:CW|FIXed]?
on page 99
[SOURce]:FREQuency[:CW|FIXed]:STEP[:WIDTh] on page 100
[SOURce]:OPTimization:OLINewidth[:STATe] on page 107
[SOURce]:WAVelength[:CW|FIXed]
on page 115