8157xA Optical Attenuators

Keysight 8157xA Variable Optical Attenuators are instruments that attenuate and control the optical power level of light in single mode optical fibers. They plug into the 8163B/8164B/8166B mainframes.

N7752C and N776-C Family of Variable Optical Attenuators

The Keysight N7752C and N776-C family of variable optical attenuators enables highly efficient optical transceiver and network integration testing. The new attenuator generation sports an on-board graphical user interface for easy control without software installation, accessible via GbE LAN and USB 2.0 connections.

N77-Series Attenuators

The Keysight N775xA and N776xA series single and multimode optical attenuators provide fast stable power setting with built-in power monitoring for optical transceiver and network integration test.

Photonic and Optical Test Catalog

Explore Keysight photonic and optical test solutions engineered for optical device characterization, wavelength measurement, coherent modulation analysis, and high‑speed optical communication testing. This catalog highlights benchtop and modular optical test instruments across multiple capability classes for research, manufacturing, calibration, and coherent system validation.

N4917BSCB Optical Receiver Stress Test Solution

Complete optical receiver stress test solution for 400GbE optical transceivers with automated stress eye calibration and performance compliance testing.

N4917DJCA 1.6T Optical Receiver Test Application

N4917DJCA 1.6T Optical Receiver Test Application provides a platform for automated stressed receiver sensitivity test which is compliant to IEEE 800GBASE and 1.6TBASE standards.

N4917CPCA Optical Receiver Stress Test Solution

The N4917CPCA optical receiver stress test solution provides an automated stressed receiver sensitivity test in accordance with the 100GBASE-LR4, ER4 and CPRI option 10 specifications.

N4917B Optical Receiver Stress Test Solution

The N4917B software provides an automated standards compliant stressed receiver sensitivity test according to 100GBASE-LR4 and -ER4 test specification.

Optical Power Meter Head Special Calibration

Keysight offers a number of optical power measurement solutions that use the 816xA/B family of optical mainframes as host to a number of modules. The most versatile and accurate optical power meters are interface modules coupled with optical heads. The calibration of Keysight's 81623B, 81624B, and 81626B optical heads is described in Production, as is the special calibration that can be ordered. This special calibration (a calibration certificate is attached to the module) is carried out by the factory's Metrology Laboratory in Deutschy. Special recalibrations can be performed for those optical heads that were originally ordered with the special calibration.

N4917BACA Optical Receiver Stress Test Solution 100 Gb/s Ethernet

The N4917B optical receiver stress test solution provides an automated stressed receiver sensitivity test in accordance with the 100GBASE-LR4, ER4 and SR4 test specifications as well as with the following 100G Multi Source Agreements: CLR4, CWDM4, 4WDM and PSM4.

Keysight N773-C Family of Optical Switches

The Keysight N773-C family of single-mode fiber-optic switches are an indispensable tool to automate photonic test solutions. Based on optical micro-electro-mechanic systems (MEMS) technology, those switches use tiny mirrors to guide the light to the desired output. MEMS based optical switches offer outstanding durability, repeatability, and fast switching times.

N4391C Optical Modulation Analyzer

The N4391B is the next generation Optical Modulation Analyzer based on the UXR Oscilloscope series with two bandwidth options, one ranging from 40 GHz to 70 GHz and a second one ranging from 80 GHz to 110 GHz.

Wafer and Chip-Level Optical Test

See how the N7700 Lambda Scan test system supports integrated photonics with polarization alignment for optical testing of wafers and chips.

N4391B Optical Modulation Analyzer

The N4391B is the next generation Optical Modulation Analyzer based on the UXR Oscilloscope series with two bandwidth options, one ranging from 40 GHz to 70 GHz and a second one ranging from 80 GHz to 110 GHz.

N7753C Optical Return Loss Meter

The N7753C optical return loss meter measures the optical power into and reflected from the device under test and calculates the return loss. A power monitor and the guided user calibration eliminate the effects of dark current and parasitic backscatter for beter accuracy and wide dynamic range.

Attenuator Calibration of Precision Step Attenuators

Automated parallel IF substitution system for precision attenuator calibration has been in use for over 15 years. See the calibrated attenuator results.

High Attenuation Measurement of Step Attenuators

See Keysight’s solution for high attenuation measurement of step attenuators. The method used is based on a cascaded 2-port network and S-parameter theory.

RF & Microwave Attenuators

This brochure eases selection of Keysight attenuators by providing a brief overview and specifications of fixed, manual, and programmable step attenuators.

Coaxial Attenuators 8490D

This publication describes these coaxial attenuators, the broadband dC-26.5 GHz low power fixed attenuator pads. Values from 3-60 dB.

8490G Coaxial Attenuators

This 10-page technical overview covers the key features, benefits and specifications for the 8490G coaxial fixed attenuator. The 8490G provides unparalleled performance up to 67 GHz to maximize the operating frequency range.