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4
Measurement Operations & Settings
command:
:OUTPut[n][:CHANnel[m]][:STATe]?
syntax:
:OUTPut[n][:CHANnel[m]][:STATe]?
description:
Queries the current state of the laser current.
For attenuator output see
parameters:
none
response:
A boolean value:
example:
outp? -> 1<END>
affects:
All laser sources, DFB sources, tunable laser modules and return loss modules with an internal source
command:
[:SOURce[n]][:CHANnel[m]]:AM[:INTernal]:FREQuency[l]
syntax:
[:SOURce[n]][:CHANnel[m]]:AM[:INTernal]:FREQuency[l]<wsp><frequency>
[THZ|GHZ|MHZ|KHZ|HZ]
description:
Sets the frequency of the amplitude modulation of the laser output.
parameters:
The frequency as a float value in Hz.
Also allowed are:
The default units are HZ, although KHZ, MHZ, GHZ, and THZ can also be specified.
The resolution of the frequency is always 1 Hz.
Use [l]to set the modulation 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.
response:
none
example:
sour2:am:freq 270hz
affects:
All laser sources, DFB sources, and tunable laser modules except 81950A.
124
:OUTPutn[:CHANnel[m]]:[STATe]?
MIN: minimum programmable value
MAX: maximum programmable value
DEF: This is not the preset (*RST) default value but is half the sum of, the minimum
programmable value and the maximum programmable value
8163A/B, 8164A/B & 8166A/B Mainframes Programming Guide
on page 193
0 – laser current off
1 – laser current on
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