Your browser limits use of the Used Keysight Equipment website.
Please consider switching to a current version of Chrome, Firefox, Edge or IE11 to use this site.

Do you need help?

Contact us with any question regarding your used Keysight equipment purchase!

Back

Product selection and configuration assistance

General technical question

Availabilty, warranty extensions, calibration plans, additional software options, education discounts etc.

Question about this offer

Please call an expert at:

1 800 829-4444
Press #, then 2

Hours:
7am – 5pm MT, Mon– Fri

or find your Local Keysight Contacts

Do you need help?

Contact us with any question regarding your used Keysight equipment purchase!

Keysight Used
  • Savings of up to 90%
  • Working Condition
  • Calibrated or Tested
  • 30-Day Right-of-Return
  • No Customization
  • Shipping to limited countries

Learn more

Keysight N4391A

-N4391A-0

Optical Modulation Analyzer

Keysight N4391A Optical Modulation Analyzer
Actual instrument
Keysight N4391A Optical Modulation Analyzer
Actual instrument
Keysight N4391A Optical Modulation Analyzer
Actual instrument
Keysight N4391A Optical Modulation Analyzer
Actual instrument
  • Keysight N4391A Optical Modulation Analyzer
  • Keysight N4391A Optical Modulation Analyzer
  • Keysight N4391A Optical Modulation Analyzer
  • Keysight N4391A Optical Modulation Analyzer

From USD*31,778.00New Price 317,780.00 USD*

Buy Now Online31,778.00
Request a quote

Back
Keysight N4391A Optical Modulation Analyzer
Keysight Used
Keysight N4391A
Optical Modulation Analyzer
Configuration: 110, 220, 510, E02
Customization available
Shipping:Limited countries only
Warranty: 90 days
Accessories: Not included

KeysightCare Assured: Support. Elevated.
Add complete customer care to your order and get:
• 4-business-hour technical response
• Committed repair coverage
Learn more

Cannot ship to:

European Union
Switzerland
Norway
Turkey

Unit only ships within China.

Unit ships worldwide.

Standard Keysight Used For professional and industrial use only
Condition Checked, working Calibrated units perform according to specification. Not calibrated units are operational tested/power up test.
DownloadsKeysight N4391A Data sheetKeysight N4391A User Manual
Support 90 days warrantyFor calibration & service plans contact us.5 years Keysight Care assured on eligible models The product may be End-of-Support
CalibrationTested or calibratedIf there is no certificate in the gallery above, the unit is tested but not calibrated.
AccessoriesNot includedFor help, please contact a Keysight expert
Shipping Limited countries only Check availability
LocationKeysight Roseville, CA, US
Deal IDE185224827708

Check Shipping

Find out if this unit can be shipped to your country

Compare Standards

See Full Details

This InstrumentThis Instrument
Keysight Premium UsedKeysight Used
Save up to 70%Save up to 90%
Like New ConditionWorking Condition²
Firmware UpdatedFirmware as Listed
Fully CalibratedCalibration as Listed
New AccessoriesAccessories as Listed
Like-New Warranty
1–5 Years¹
90 days warranty
Customization PossibleLimited Customization

Contact us to check availability of any service, calibration plans, or the possibility to software. New accessories may be able to be added for the United States only. 

Specifications
  • Specified typical system noise floor 1.8% rms EVM
  • 66 Gbaud symbol rate
  • 264 Gbit/s for QPSK, 512 Gbit/s for QAM 16
  • Analysis span 66 GHz
  • Optical wavelength range 1528 nm to 1630 nm
  • Absolute wavelength accuracy +/- 5 pm typical
  • Factory specials up to 4x 63 GHz system bandwidth are now available. Ask your local Keysight representative for details

The N4391A is a high end turn-key optical modulation analyzer for advanced research in single and multi-carrier 400 Gbit/s and 1Tbit/s complex modulated transmission systems. It is based on the latest Z-Series Keysight oscilloscopes, a 40 GHz dual polarization coherent receiver and optical modulation vector signal analysis software offering most flexible analysis tools and smart setup for easiest instrument setup.

Benefits

  • Highest confidence in test results through full calibrated turn-key solution
  • Widest range of modulation format offering
  • Based on world class Z-Series 4 channel Keysight oscilloscope

Features

  • Fully integrated in Vector Signal Analysis software with smart setup
  • Analysis software also available as PC stand-alone version
  • User configurable APSK and OFDM demodulator
  • Modulation-format transparent polarization alignment
  • Clearly structured measurement resultsaward_logo
  • Optical characterization results for each polarization plane separately
  • Optical summary results for complete signal
  • BER and Q factor separated for each polarization plane and overall signal
  • Freely configurable screen layout
  • Internal PMF switch to select internal or external local oscillator laser for best long term test results
  • Free selection and sequence of DSP algorithms
  • Various CD and PMD compensation and measurement algorithms
  • Integration of user DSP algorithm with the same freedom as Keysight algorithms
See downloads for more details
Installed Options
110OPTICAL MODULATION ANALYZER WITH 4 CHANNEL RECEIVER AND ANALYSIS SOFTWARE
220INTERNAL LOCAL OSCILLATOR AND EXTERNAL LOCAL OSCILLATOR INPUT AND LOCAL OSCILLATOR OUT
510FAST TUNABLE C AND L BAND LOCAL OSCILLATOR
E02
See downloads for more details
Support
90 days warranty
Contact us or request a custom quote to check availability of service plans.
Calibration
Tested or calibrated
Get up to 10% discount on calibration plans ordered with your used Keysight instrument.
Contact us or request a custom quote to check availability.
Accessories
No accessories included
To order additional accessories, please contact us or request a custom quote
Software
Get up to 10% discount on software ordered with your used Keysight instrument.
Contact us or request a custom quote to check availability.

FAQs

What are the differences between Keysight Used & Keysight Premium Used?

You will find more information about the differences of Keysight's used equipment standards here.

Can I configure a unit to meet my personal needs?

Customization is generally possible with our Keysight Premium Used equipment. The majority of our Keysight Premium Used equipment can be configured just the way you need it. Options can be added at additional cost.
Customizing Keysight Premium Used equipment might change the delivery and lead time of the item.

Some Keysight Used products cannot be customized. Use the contact option on the product page to check with the our eStore team.

What accessories are included?

Keysight Premium Used equipment typically comes with the same accessories and warranty as new products.

For Keysight Used products, the accessories included are mentioned in each listing on the Keysight Store on eBay or the Keysight Alibaba store.

Can you include other accessories?

We currently only offer those accessories which are part of the listing. Other accessories can be purchased separately at extra cost with your purchase of a Keysight Used or Keysight Premium Used unit.

Please mention in the comment field which additional accessories or support you are interested in.

For seperate or post-purchase ordering, please contact your local Keysight office or Keysight Partner.

Get an Account and Keep Track of Models, Prices, and Availability

Sign up now

Education
and Non-profit Customers Can Save Extra

LEARN MORE

‹ Back to results