WRXi-SDM

Software clock recovery eliminates trigger jitter

Measure data rates up to 3.5 Gb/s

Automatic mask alignment

Adjustable mask margins

Creation of user-defined masks

The SDM serial data mask package for LeCroy WaveMaster series, WavePro 7000 series, WaveRunner 6000 and 6000A series and VBA adds eye pattern mask testing capability to the instrument. The user selects compliance masks from a comprehensive list of standards and the eye pattern is tested against this mask. User-defined masks are also possible by simply editing the included Microsoft™ Access2000™ data base file. The eye pattern is automatically aligned with the compliance mask.

The SDM package measures eye patterns by acquiring a long record of waveform data from the data stream under test. Once in the oscilloscope’s memory, a software algorithm computes a reference clock from the signal data which tracks the long-term variations in the data rate in the same way as a “golden” PLL does in hardware. The loop bandwidth of this software golden PLL is adjustable as a ratio of the measured bit rate. This ratio is variable from 1/20 to 1/10,000. Mask violations are counted and indicated by red circles in the display. The mask margins are adjustable both vertically and horizontally.

All of the data for the eye pattern are collected in a single acquisition thus completely eliminating any trigger jitter from the measurement.

PLL bandwidth:	.05 to 10-5 of thedata rate
Jitter:	1ps RMS typical (based on the WaveMaster sampling clock stability)
Data rates:	Less than 3.5Gb/s

Standard Masks

SONET/SDH	OC1/STM0 OC3/STM1 OC12/STM4 OC48/STM16
Ethernet IEEE Std. 802.3 and ANSI X3.263-1995	1000base-SX short wave optical 1000 base-LX long wave optical
Fibre Channel electrical	FC133E, FC266E,FC531E,FC1063E
Fibre Channel optical	FC1063
IEEE1394b (draft)	S400 Optical  S400b T1 S400b T2 S800 Optical S800b T1 S800b T2 S1600 Optical S1600b T1 S1600b T2
Serial ATA (draft)	G1, G1 Rx, G1 Tx G2, G2 Rx, G2 Tx
DVI (rev. 1.0)	Transmit normalized,  Receiver Low/high
Infiniband (draft)	2.5Gb/s Optical  2.5 Gb/s Electrical