User`s guide

APPENDIX E – Clock Recovery Option
The clock recovery option enables signal integrity compliance and diagnostics measurements when access to
a bit clock is not available. The clock recovery option also removes the need for awkward setups to obtain
accurate and repeatable compliant signal integrity measurements - simply plug in your test signal to make
eye diagram and jitter measurements.
Setup:
The data from the DUT is sent into the Clock recovery Data In. The supplied Hard-line SMA's are used to
connect from the Clock Recovery Data Out to the IN1 (Channel 1 input). The recovered clock is used
internally for all signal integrity measurements.
Specifications: Continuous Rate Single Rate
Clock recovery data rate .............................30 Mb/s to 3.0 Gb/s..................2.5 Gb/s ±2%
Clock recovery PLL bandwidth .....................Databaud/1244 Typical .............2 MHz max (1.1 MHz Typical)
Clock jitter
1
..............................................................................................< 2.0 ps rms (1.75 ps Typical)
Databaud < 500 Mb/s .............................< 5.0ps RMS
Databaud > 500Mb/s ..............................< 3.0ps RMS
Insertion Loss Through Path .......................8 dB Typical.............................6 dB Typical
Operating Input Signal Level
Single Ended: .........................................0.250 to 2.5 Volts(pk-pk) ........0.125 to 1.25 Volts(pk-pk)
Differential: ............................................0.125 to 1.25 Volts(pk-pk) ........0.250 to 2.5 Volts(pk-pk)
1
Measured using PRBS 2^23-1 test pattern.
Applications
Fibre Channel (1x, 2x, 3x), SAS & SATA (1.5 & 3.0), Gigabit Ethernet, PCI Express, Infiniband, SONET
OC-3,12,48, XAUI, 10GFC, Serial RapidIO, DVI, 1394b (800Mb/s & 1.6Gb/s), Fast Ethernet, HDMI,
Custom (30 to 3000 Mb/s).
Contact
WAVECREST Corporation for more information regarding the Clock Recovery Option.
© WAVECREST Corporation 2005 Appendix E
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