Table of Contents
Advertisement
command:
[:SOURce[n]][:CHANnel[m]]:WAVelength:FREQuency[l]
syntax:
[:SOURce[n]][:CHANnel[m]]:WAVelength:FREQuency[l]<wsp><value>
[THZ|GHZ|MHZ|KHZ|HZ]
description:
Sets the frequency difference used to calculate a relative wavelength. The output wavelength is made up of the reference
wavelength and this frequency difference.
The default units for frequency are Hertz.
The output wavelength[
output wavelength is:
where c is the speed of light in a vacuum (2.990 x 10
Use [l] to set the frequency of the upper or lower wavelength laser source of a dual-wavelength laser source or a return loss
module with an internal dual-wavelength laser source. The default value of [l] is 1, the lower wavelength source. The upper
wavelength source is denoted by 2.
parameters:
The frequency difference is a float value in Hz.
response:
none
example:
sour0:wav:freq -10THZ
affects:
All tunable laser sources
command:
[:SOURce[n]][:CHANnel[m]]:WAVelength:FREQuency[l]?
syntax:
[:SOURce[n]][:CHANnel[m]]:WAVelength:FREQuency[l]?
description:
Returns the frequency difference used to calculate a relative wavelength.
Use [l] to query the frequency of the upper or lower wavelength laser source of a dual-wavelength laser source or a return
loss module with an internal dual-wavelength laser source. The default value of [l] is 1, the lower wavelength source. The
upper wavelength source is denoted by 2.
parameters:
none
response:
Returns the frequency difference as a float value in Hz.
example:
wav:freq?
affects:
All tunable laser sources
8163A/B, 8164A/B & 8166A/B Mainframes Programming Guide
λ
] is set from the base wavelength (
->
-1.00000000E+013<END>
λ
) and the frequency offset (d f). The formula for calculating the
0
c ( )
λ
λ
----------------------------- -
=
λ
(
(
)
)
df
+
c
ο
8
-1
ms
)
Measurement Operations & Settings
ο
4
163
Advertisement
Table of Contents
