Tektronix 071-0590-00 user manual Outputs and Inputs, Generator Output Connectors Section

Functional Overview

Outputs and Inputs

This section introduces all inputs and outputs of the GB1400 Generator and Analyzer. Unless otherwise indicated, all signal inputs and outputs are equipped with SMA female connectors and have a nominal input or output impedance of 50 ohms. However, a 75 Ohm Option is available for both the Generator and Analyzer which changes nominal impedance of key inputs and outputs to 75 ohms.

Note: The same term can be expressed three different ways.

clock	= clock bar	= NOT clock
	= DATA BAR	= NOT DATA
DATA

The front panel of the GB1400 Tx is divided into nine sections:

LCD Display	Error Inject
Clock	Pattern
Output Controls	GPIB
Power Switch	Output Connectors

Generator OUTPUT Connectors Section

The OUTPUT connectors section of the Generator front panel contains the outputs listed below.

OUTPUT

PATTERN SYNC CLOCK/4 CLOCK CLOCK DATA DATA

50 Ohm SOURCE

50 Ohm SOURCE

∙CLOCK and DATA [outputs]: These two connectors comprise the main test signal output of the Generator. DATA is the NRZ output of the pattern generator and CLOCK is its corresponding clock signal. The amplitude and baseline offset of CLOCK and DATA are variable. CLOCK and DATA may be used to drive single-ended clock and data inputs, respectively.

∙CLOCK-BAR and DATA-BAR [outputs]: These are complimentary outputs to CLOCK and DATA. That is, CLOCK and CLOCK-BAR together can drive a differential clock input, while DATA and DATA-BAR together can drive a differential data input. These complementary outputs should be terminated with a 50 Ohm load (or a 75 Ohm load if the 75 Ohm Option is

GB1400 User Manual 2-9