Measurement Operations & Settings

Signal Generation – The SOURce Subsystem

command:

syntax:

description:

parameters:

N O T E

N O T E

N O T E

response:

example:

affects:

[:SOURce[n]][:CHANnel[m]]:POWer:ATTenuation[l]

[:SOURce[n]][:CHANnel[m]]:POWer:ATTenuation[l]<wsp><value>[DBMDB]

Sets the level of attenuation.

Any value in the specified range (see the specifications in the appropriate User’s Guide).

Also allowed (for MIN: minimum programmable value

tunable laser

MAX: maximum programmable value

modules only)

are:DEF: This is not the preset (*RST) default value but is half the sum of, the minimum programmable value and the maximum programmable value

Use [l] to set the attenuation level of the upper or lower wavelength laser source of a dual- wavelength laser source or of 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.

Tunable laser modules with in-built optical attenuators need to be in Manual Attenuation Mode (see “[:SOURce[n]][:CHANnel[m]]:POWer:ATTenuation[l]:AUTO” on page 123) for this value to have an affect. The output power is a combination of this value and the laser output power (see “[:SOURce[n]][:CHANnel[m]]:POWer[:LEVel][:IMMediate][:AMPLitude[l]]” on page 124).

In this respect, this command does not conform to the SCPI standard. The SCPI standard re- quires that entering an explicit value for the attenuation switches the attenuation mode OFF.

The default units are dB.

none

sour0:pow:att 22.32db

All tunable laser modules with an built-in optical attenuator, and all laser source modules.

 

command:

[:SOURce[n]][:CHANnel[m]]:POWer:ATTenuation[l]?

 

 

 

syntax:

[:SOURce[n]][:CHANnel[m]]:POWer:ATTenuation[l]?[MINDEFMAX]

 

description:

Queries the attenuation level.

 

 

When using a tunable laser module with a built-in optical attenuator, the value returned ap-

 

 

plies only to the attenuation mode (see

 

 

“[:SOURce[n]][:CHANnel[m]]:POWer:ATTenuation[l]:AUTO” on page 123).

 

N O T E

Use [l] to query the attenuation level of the upper or lower wavelength laser source of a dual-

 

 

wavelength laser source or of 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.

 

parameters:

Also allowed (for MIN: minimum amplitude level

 

 

tunable laser mod-

MAX: maximum amplitude level

 

 

ules only) are:

 

 

 

 

DEF: This is not the preset (*RST) default value but is half the sum of,

 

 

 

the minimum amplitude level and the maximum amplitude level

 

response:

attenuation level relevant to the current value or specified parameter (if MIN, MAX, or DEF

 

 

are chosen as a parameter).

 

example:

sour0:pow:att? def → +3.10000000+E001<END>

 

affects:

All tunable laser modules with an in-built optical attenuator, and all laser source modules.

122

 

 

 

 

 

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

Page 121 Page 123
Page 122
Image 122
Agilent Technologies 8163A, B, 8166A, 8164A manual 122, SOURcenCHANnelmPOWerATTenuationl?
Page 121 Page 123

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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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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