Measurement Operations & Settings

 

Signal Generation – The SOURce Subsystem

 

 

 

 

 

 

 

 

command:

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

 

 

 

 

 

syntax:

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

 

 

description:

Queries whether the attenuator is set to ‘dark’ position (where all light is blocked by the la-

 

 

 

ser).

 

 

 

 

parameters:

none

 

 

 

 

response:

0:

dark position not set

 

 

 

1:

dark position set

 

 

 

example:

sour0:pow:att:dark? → 1<END>

 

 

affects:

All tunable laser modules with a built-in optical attenuator.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

command:

[:SOURce[n]][:CHANnel[m]]:POWer[:LEVel][:IMMediate][:AMPLitude[l]]

 

 

 

 

 

syntax:

[:SOURce[n]][:CHANnel[m]]:POWer[:LEVel][:IMMediate][:AMPLitude[l]]<wsp><value>

 

 

 

[PWNWUWMWWattDBM]

 

 

description:

Sets the power of the laser output.

 

 

N O T E

If an optical attenuator is installed, the power value returned is dependent on whether you

 

 

 

are using power or attenuation mode (see

 

 

 

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

 

 

 

If you are using power mode, the value returned is the output power.

 

 

 

If you are using attenuation mode, the value returned is the laser output power, and you must

 

 

 

also use the attenuation value to calculate the output power (see

 

 

 

“[:SOURce[n]][:CHANnel[m]]:POWer:ATTenuation[l]” on page 122).

 

 

 

The values for the output power that you set in the Power Mode, and the laser output power

 

 

 

that you set in the Attenuation Mode, are stored and used independently.

 

 

N O T E

The instrument may not be able to output a signal with the maximum programmable power, it

 

 

 

will output a signal with the maximum power. Use the

 

 

 

“[:SOURce[n]][:CHANnel[m]]:POWer[:LEVel][:IMMediate][:AMPLitude[l]]?” on page 125 to

 

 

 

query the power being output.

 

 

 

The default units are DBM or W, depending on the unit selected using the following com-

 

 

 

mand: “[:SOURce[n]][:CHANnel[m]]:POWer:UNIT” on page 127.

 

 

parameters:

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

 

 

 

Also allowed are:

MIN: minimum programmable value

 

 

 

 

 

MAX: maximum programmable value

 

 

 

 

 

DEF: This is not the preset (*RST) default value, but is the maximum

 

 

 

 

 

programmable level

 

 

N O T E

Use [l] to set the amplitude level of the output power of the upper or lower wavelength laser

 

 

 

source of a dual-wavelength laser source or a return loss module with an internal dual-wave-

 

 

 

length 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:pow 23uW

 

 

 

affects:

All tunable laser and DFB source modules

124

 

 

 

 

 

 

 

 

 

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

Page 123 Page 125
Page 124
Image 124
Agilent Technologies B, 8166A 124, SOURcenCHANnelmPOWerATTenuationlDARK?, SOURcenCHANnelmPOWerLEVelIMMediateAMPLitudel
Page 123 Page 125

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.

One of the standout features of the B,86100A is its capability to analyze signals with various bandwidths, accommodating both current and emerging communication standards. The device features a sampling rate of up to 80 GS/s and bandwidth capabilities of 33 GHz to ensure high accuracy in capturing fast signal transitions, which is critical for ensuring the integrity of complex digital signals.

The B,86100A employs Agilent's proprietary digital signal processing (DSP) technology, which significantly enhances measurement precision and reduces noise, enabling users to obtain clearer insights into signal behavior. Its advanced triggering capabilities allow for precise signal capture, making it particularly useful in troubleshooting and validating high-speed designs, as well as in evaluating the performance of optical and electrical devices.

In addition to its high-speed capabilities, the B,86100A offers a robust set of measurement tools including jitter analysis, eye diagram analysis, and equalization assessment. These features allow engineers to effectively analyze signal quality and address potential issues related to signaling distortions and inter-symbol interference.

The graphical user interface of the B,86100A is intuitive, enabling users to efficiently navigate through measurement options and visualize data results. Customizable measurement setups streamline workflow, ensuring that users can quickly adapt their tests to evolving project requirements.

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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