Tektronix 071-0590-00 user manual Aux, Synchronization

Specifications

Auxiliary Signals: Pattern Sync, Clock, Data, Error and Threshold

Level	250 mVp-p into 50 Ohms, 500 mV into Hi-Z
Impedance	50 Ohms
Data Monitor	Latched Input Data
Clock Monitor	Buffered Input Clock
Pattern SYNC	1-bit wide pulse per frame
Error Inhibit	Rear panel, ECL
Error Output	Rear panel, ECL
AUX	Rear panel, Data Threshold output
	Note: Connect this output to DATA BAR (Not DATA) for
	single-ended operation.
Connectors	SMA
Synchronization
Auto Search

Unit automatically finds the Data Threshold , the Clock/Data input timing phase delay, the input Data Pattern (PRBS or WORD mode), and Data Polarity.

There are two modes to find the Data Delay

FAST - A quick method using the Clock/Data phase indicator.

BER - A slower method which uses the signal's bit error rate.

Either method will make available the width of the Data Eye (if possible). The BER method allows user control over:

Data Sample Size (10E-4 to 10E-11). This is the number of data bits sampled at each Delay setting used to determine the center of the Data Eye.

Bit Error Rate Threshold (10E-3 to 10E-10). This is the threshold used to determine which Delay settings are part of the Data Eye Crossing.

Manual Mode

User selects parameters, then unit attempts to synchronize on the input data pattern.

Disable Mode SYNC circuitry disabled

GB1400 User Manual A-7