PCI Express® Gen 2.0 RX jitter testing with J-BERT N4903B
Key Features & Specifications
- All jitter sources built in (dual tone DJ, spectral RJ, SSC and residual SSC) compliant to PCI Express® Revision 2
- Flexible Clock and Trigger channels to support PCI Reference clock
- Flexible pattern sequencer to train the DUT (set loop-back mode) and run the test
- J-BERT’s N4903B Automated compliance tests with N5990A test automation software
PCI Express® made it to one of the major interfaces inside a computer. In December 2006 the PCI-SIG® association released the Base Specification Revision 2 . The Revision 2 doubles the operating speed from 2.5 Gb/s in Revision 1 to 5 Gb/s.
Beside the Base Specification there was a release of the Card Electromechanical (CEM) Specification, Revision 2.0 in April 2007  as a companion to the Base Specification.
PCI Express® Revision 2 RX Jitter tolerance testing deals with new kind of jitter creation for stressing the RX:
- Spectrally distributed RJ
- Dual Tone DJ
- Residual SSC
The CEM Standard introduces the concept of Dual Tone DJ. Normally DJ jitter would be used as sinusoidal jitter at one frequency while the frequency may be varied over time (Jitter Tolerance Measurement). The dual tone method uses two sinusoidal signals at the same time, one at the lower and one at higher frequency. Optionally the signal at lower frequency may sweep continuously between the min. and max. value of the frequency band.
PCIe is a trademark and PCI Express is a registered trademark of PCI-SIG
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