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ID: E2508699

Keysight N4955A-D12

Pattern Generator Remote Head / 12.5Gb/s / 4-tap

ID: E2508699
Keysight N4955A-D12 4-tap
Keysight N4955A-D12 4-tap

Keysight N4955A-D12

Pattern Generator Remote Head / 12.5Gb/s / 4-tap

Tested, Working
90 days warranty, extendable up-to 5 years. The product may be End-of-Support.
Accessories only included if shown in the pictures
Limited configurability
KeysightCare available

List Price USD 23,970.00 Save 75%
USD 5,992.50 Excl. taxes.
Not combinable with other discounts.

For professional and industrial use only.
Ships to unset within 1–2 weeks.
Request Quote

Keysight N4955A-D12 4-tap
Keysight Used
Keysight N4955A-D12
Pattern Generator Remote Head / 12.5Gb/s / 4-tap
Customization available
Shipping: Limited countries only
Warranty: 90 days
Accessories Not included

Cannot ship to:

European Union

Unit only ships within China.

Unit ships worldwide.

Keysight N4955A-D12 4-tap

Keysight Used

Keysight  N4955A-D12


USD 5,992.50 Save 75%

Installed Options


Addable Options

Request a customized version of this model by requesting a Custom Quote

Product Specifications


  • 1 to 12.5 Gb/s Pattern Generator remote head
  • Integrated two-tap or four-tap de-emphasis signal conditioning
  • Programmable generator output parameters
  • Transparent jitter pass-through
  • Remote head allows placement of signal very close to DUT


  • N4965A Multi-Channel BERT 12.5 Gb/s

The N4955A is an affordable and compact pattern generator remote head available in two-tap and four-tap de-emphasis configurations. Compatible with the N4965A Serial BERT controller, it is an ideal solution to test up to 12.5 Gb/s per channel for characterizing multi-lane serial data channels. The N4955A pattern generator supports PRBS, clock, and DC logic patterns and operates up to 12.5 Gb/s with differential of single-ended connections. The remote head allows the test equipment to be located very close to the device under test, eliminating the need for long cables that degrade signal quality.


  • Serial data receiver characterization up to 12.5 Gb/s
  • Multi-lane device characterization
  • Crosstalk characterization


Accessories only included if shown in the pictures.

You can find new accessories, by searching Keysight Accessories

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What You Get

  • Keysight N4955A-D12 BER Test
  • Accessories only included if shown in the pictures
  • Calibration certificate only included if shown in the pictures

What You Can Add

  • KeysightCare Assured
  • Fresh Calibration
  • Calibration Plan

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What are the main differences between Keysight New, Keysight Premium Used & Keysight Used equipment?

  Keysight New Keysight Premium Used Keysight Used
Savings None Up to 70% Up to 90%
Condition New Like New Working Condition ¹
Firmware Latest Updated As is
Calibration Full Full As listed
Accessories New New As listed
Warranty 1 to 5 Years ² Like New 90 Days Warranty
Customization Possible Possible Limited

Learn more about Keysight Premium Used 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.

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 here. Or check our online store if available for your region here.

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