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4
Measurement Operations & Settings
command:
[:SOURce[n]][:CHANnel[m]]:AM:SOURce[l]
syntax:
[:SOURce[n]][:CHANnel[m]]:AM:SOURce[l]<wsp>
INT|INT1|INT2|COHC|AEXT|EXT|DEXT|WVLL|BACK|0|1|2|3|5|6
description:
Selects the type or source of the modulation of the laser output.
parameters:
0, INT1, or INTernal:
1, COHCtrl, or INT2:
2, AEXTernal, or EXT:
3 or DEXTernal:
4 or LFCohctrl:
5 or WVLLocking:
6 or BACKplane:
Use [l]to set the modulation source 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:sour int
affects:
Internal digital modulation is available with fixed-wavelength laser sources (Fabry-Perot, DFB lasers), return loss modules
containing an internal source, and tunable lasers, except 81602A, 81606A, 81607A, 81608A and 81609A.
Coherence control is available with DFB sources and tunable lasers except 81606A and 81607A. External wavelength locking
is available with 81602A, 81606A and 81600B tunable lasers.
Other modulation modes are only available with tunable laser modules except 81602A, 81606A, 81607A, 81608A and
81609A.
command:
[:SOURce[n]][:CHANnel[m]]:AM:SOURce[l]?
syntax:
[:SOURce[n]][:CHANnel[m]]:AM:SOURce[l]?
description:
Returns the type or source of the modulation of the laser output.
parameters:
none
Use [l] to query the modulation source 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.
126
internal digital modulation
coherence control
external analog modulation
external digital modulation
low frequency coherence control
wavelength locking
external digital modulation using Input Trigger Connector
8163A/B, 8164A/B & 8166A/B Mainframes Programming Guide
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