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Signal Generation – The SOURce Subsystem Measurement Operations & Settings
Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition 121
command:
[:SOURce[n]][:CHANnel[m]]:FM:SBSCtrl:Level[l]?
syntax: [:SOURce[n]][:CHANnel[m]]:FM:SBSCtrl:LEVel[l]?<wsp>[MIN|MAX|DEF]
description: Queries the currently set excursion level of the SBS Control frequency modulation.
parameters: Optional MIN: returns the minimum programmable value (0%)
MAX: returns the maximum programmable value (100%)
DEF: returns the default preset (*RST) value.
response: Returns the currently set excursion level as a percentage of its maximum value.
example: sour2:fm:sbsc:lev? → +8.000E+01<END>
affects: Agilent 81980A, 81940A, 81989A, 81949A compact tunable lasers.
command:
[:SOURce[n]][:CHANnel[m]]:MODout
syntax: [:SOURce[n]][:CHANnel[m]]:MODout<wsp>FRQ|FRQRDY|0|1
description: Sets the modulation output mode of the BNC connector on the front panel of tunable laser
modules.
parameters: FRQ or 0:
FRQRDY or 1:
modulation signal is output all the time
modulation is combined with the laser-ready signal.
In this case, the output is kept low when no optical signal is output (for
example, while the laser is settling after a change of wavelength).
response: none
example: sour0:mod 0
affects: All tunable laser sources with BNC ouput connector.
command:
[:SOURce[n]][:CHANnel[m]]:MODout?
syntax: [:SOURce[n]][:CHANnel[m]]:MODout?
description: Queries the modulation output mode of the BNC connector on the front panel of tunable la-
ser modules.
parameters: none
response: 0:
1:
modulation signal is output all the time
modulation is combined with the laser-ready signal.
In this case, the output is kept low when no optical signal is output (for example, while
the laser is settling after a change of wavelength).
example: sour0:mod? → 0<END>
affects: All tunable laser sources with BNC output connector.