Measurement Operations & Settings

Signal Generation – The SOURce Subsystem

command:

[:SOURce[n]][:CHANnel[m]]:AM:COHCtrl:COHLevel[l]

 

syntax:

[:SOURce[n]][:CHANnel[m]]:AM:COHCtrl:COHLevel[l]<wsp><value>[MIN MAX DEF]

description:

Sets the level of coherence, when using coherence control, on an arbitrary scale from 1 to

 

99.98%. A 100% coherence level corresponds to maximum coherence length and minimum

 

linewidth. The coherence level required for a specific linewidth and coherence length can

 

vary between modules.

 

parameters:

The excursion level as a percentage of its maximum value.

 

Also allowed:

MIN: minimum programmable value (0%)

 

 

MAX: maximum programmable value (100%)

 

 

DEF: default preset (*RST) value.

response:

none

 

example:

source2:am:cohc 50

 

affects:

DFB sources and Agilent 81980A, 81940A, 81989A, 81949A

 

 

 

command:

syntax:

description:

parameters:

response:

example:

affects:

[:SOURce[n]][:CHANnel[m]]:AM:COHCtrl:COHLevel[l]?

[:SOURce[n]][:CHANnel[m]]:AM:COHCtrl:COHLevel[l]<wsp><value>?[MIN MAX DEF]

Queries the current level of coherence, when using Coherence Control. Coherence is ex- pressed on an arbitrary scale from 1 to 99.98%. A 100% coherence level corresponds to maximum coherence length and minimum linewidth.

Optional

MIN: returns the minimum programmable value (0%)

 

MAX: returns the maximum programmable value (100%)

 

DEF: returns the default preset (*RST) value.

Returns the currently set excursion level as a percentage between 0 and 99.98 source2:am:cohc? → 50<END>

DFB sources and Agilent 81980A, 81940A, 81989A, 81949A

command:

[:SOURce[n]][:CHANnel[m]]:FM:SOURce[l]

 

syntax:

[:SOURce[n]][:CHANnel[m]]:FM:SOURce[l]<wsp>SBSCtrl0

description:

Selects the type of the frequency modulation of the laser output.

 

Currently, only parameter strings that select SBS Control are valid.

 

Enable frequency modulation before issuing this command.

 

Refer to “[:SOURce[n]][:CHANnel[m]]:FM:STATe[l]” on page 119.

parameters:

0, SBSCtrl

Simulated Brillouin Scattering

N O T E

SBSCtrl (Simulated Brillouin Scattering) Control modulation suppresses SBS effects within

 

high-power measurement setups.

response:

none

 

example:

sour2:fm:sour SBSC

 

affects:

Agilent 81980A, 81940A, 81989A, 81949A compact tunable lasers.

 

 

 

118

Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition

Page 117 Page 119
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Agilent Technologies 8163A, B, 8166A, 8164A 118, SOURce nCHANnel mAMCOHCtrlCOHLevel l, SOURcenCHANnelmAMCOHCtrlCOHLevell?
Page 117 Page 119

8163A, 8164A, 8166A, B specifications

Agilent Technologies B,86100A is a high-performance oscilloscope and signal integrity analyzer designed primarily for advanced digital communications applications. As a versatile tool, it supports a wide range of testing needs, making it indispensable for engineers and researchers involved in the development and testing of high-speed digital signals.

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Another key characteristic of the B,86100A is its modularity. The system supports a variety of plug-in modules, which can be tailored to specific application needs, such as different types of optical and electrical signals. This flexibility not only extends the operational capability of the instrument but also makes it a future-proof investment as technology continues to evolve.

In summary, Agilent Technologies B,86100A combines high-speed acquisition with advanced processing capabilities, making it an essential instrument for anyone involved in high-speed digital design and testing. With its ability to deliver precise measurements and extensive analysis features, it empowers engineers to achieve optimal performance and reliability in their systems.
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