HP 8163A Series Programming Manual page 90

Measurement Operations & Settings
command:
syntax:
description:
parameters:
N O T E
N O T E
N O T E
response:
example:
affects:
command:
syntax:
description:
N O T E
parameters:
response:
example:
affects:
90
[:SOURce[n]][:CHANnel[m]]:AM:STATe[l]
[:SOURce[n]][:CHANnel[m]]:AM:STATe[l]<wsp> OFF|ON|0|1
Enables and disables amplitude modulation of the laser output.
A boolean value: OFF or 0: modulation disabled (default)
ON or 1: modulation enabled.
Use [l] to enable/disable amplitude modulation for 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.
When the internal modulation is selected, the Modulation Output on the front panel
outputs a version of the modulating signal that has the same frequency and phase as the
modulating signal, but has a fixed, TTL-level amplitude. You can use this to synchronize
your external measuring equipment to your instrument.
To allow for your possible synchronization requirements, there are two ways in which the
signal can be output. Either the signal is combined with the laser-ready signal, so that the
output is kept low when there is no optical signal being output (for example, while the
laser is settling after a change of wavelength). Or the modulation signal is output all the
time. This is set by the :SOURCE:MODOUT command (see
"[:SOURce[n]][:CHANnel[m]]:MODout" on page 91).
When you enable lambda logging, see
"[:SOURce[n]][:CHANnel[m]]:WAVelength:SWEep:LLOGging" on page 103, and
modulation simultaneously, a sweep can not be started, see
"[:SOURce[n]][:CHANnel[m]]:WAVelength:SWEep:[STATe]" on page 106.
none
sour2:am:stat 0
All laser source, DFB source, and tunable laser modules
[:SOURce[n]][:CHANnel[m]]:AM:STATe[l]?
[:SOURce[n]][:CHANnel[m]]:AM:STATe[l]?
Returns the current state of modulation.
Use [l] to query the current state of modulation 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.
none
A boolean value: 0: modulation is disabled
1: modulation is enabled
→
sour2:am:stat? 0<END>
All laser source, DFB source, and tunable laser modules
HP 8163A Lightwave Multimeter, HP 8164A Lightwave Measurement System,
& HP 8166A Lightwave Multichannel System User's Guide, E1299
Signal Generation – The SOURce Subsystem