Keysight (Agilent) Technologies N4916B BERT, Arb/Pattern Generators


De-Emphasis Signal Converter

De-Emphasis Signal Converter for N4903
  • Clock Doubler
  • De-Emphasis Signal Converter
De-Emphasis Signal Converter for N4903
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Why is signal de-emphasis needed? The de-emphasis technique is used in the transmission of digital electrical signals at gigabit data rates. De-emphasis is a signal pre-distortion to compensate for signal degradations that occur when transmitting electrical signals with gigabit rates over PC board traces, backplanes, or long cables. With the next generation of serial bus standards operating above 5 Gb/s, sophisticated de-emphasis with multi-tap Finite Impulse Response (FIR) filtering will be needed.
Many popular high-speed digital interfaces use de-emphasis, such as PCI Express®, SATA, USB3, QPI, HyperTransport, IEEE 802.3 backplanes (10GBASE-KR, 40GBASE-KR4).
What does the N4916B offer? The new N4916B de-emphasis signal converter enables R&D and test engineers to accurately emulate transmitter de-emphasis.
The N4916B can emulate transmitter de-emphasis with one pre- and two post-cursors and individually adjustable de-emphasis levels of up to 12.0 dB. With its DC-coupling it tolerates unbalanced pattern streams that often occur in training sequences. The N4916B is designed to be transparent to jitter when stimulated with jitter on data and clock signal, enabling emulation of real-world de-emphasis and jitter conditions that a receiver is expected to tolerate. De-emphasis can also be used to compensate for distortions caused by cables, fixtures or test boards in the test set for more precise device characterization results.
The new De-emphasis Signal Converter can be used as front-end for J-BERT N4903A/B, ParBERT or other gigabit pattern generators. It is controlled via its USB interface from the J-BERT N4903B user interface or from a stand-alone user interface with programming examples.
What does the the clock multiplying option of N4916B offer? The clock multiplier option enables error counting and error analysis of devices using half-rate clocking. The full-rate clock is needed to use the error, eye or jitter analysis capabilities of J-BERT N4903A/B.
What are the key differences to N4916A? 3 adjustable cursors (N4916A has one post-cursor, sufficient for data rates < 5 Gb/s)
Optional clock multiplier
Stand-alone user interface
Maximum data rate
PCIe is a trademark and PCI Express is a registered trademark of PCI-SIG

Key Specification

Accurate characterization of multi-gigabit serial interfaces using signal de-emphasis: Adjustable de-emphasis for one pre- and 2 post-cursors of 0 to 12 dB
Supports data rates from 660 Mb/s to 10.5 Gb/s
Tolerates non-balanced patterns
Transparent to jitter
Flexible usage as front-end for J-BERT N4903A/B, ParBERT 81250A or other pattern generators
Optional Clock Multiplier(opt. 001)
Small size
Programmable via J-BERT N4903B or stand-alone
N4916B OPTIONS (25)
8121-1226 Power Cord Cable Assembly - Europe and South Korea C13, 10A, 250V
N4900A-900 Power Cord - United Kingdom
N4900A-901 Power Cord - Australia and New Zealand
N4900A-902 Power Cord - Continental Europe
N4900A-903 Power Cord - United States and Canada (120V)
N4900A-906 Power Cord Switzerland
N4900A-912 Power Cord - Denmark
N4900A-917 Power cord - India
N4900A-918 Power Cord - Japan
N4900A-919 Power Cord - Israel
N4900A-920 Power Cord - Argentina
N4900A-921 Power Cord - Chile
N4900A-922 Power Cord - China
N4900A-927 Power cord - Thailand
N4915A-010 Matched cable kit for connection to J-BERT N4903B
N4916B-001 Clock Doubler
N4916B-RMKT Serial High-Performance BERT refurbished
N4916B-S01 Recalibration Special to the latest Performance, RTF
N4916B-STD De-Emphasis Signal Converter
N4916B-U14 Upgrade of N4916B De-emphasis Signal Converter to latest performance
PS-S10 Remote scheduled productivity assistance. Select 1 to 999 hours.
PS-S20 Startup assistance
R-50C-011-3 Calibration Assurance Plan - Return to Keysight - 3 years
R-50C-011-5 Calibration Assurance Plan - Return to Keysight - 5 years
R-51B-001-5Z Warranty Assurance Plan - Return to Keysight - 5 years
N4916B PRODUCT Q & A  
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