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6 User’s and Service Guide

E4438C Option SP2

Technical Specification

Startup

Once the ARB has been “armed”, it will wait until a trigger is received on patt_trig_in2.

The rising edge of patt_trig_in2 will latch in the external 8 bit segment number input on

pdata(7..0). The falling edge of patt_trig_in2 will “trigger” the externally defined waveform

segment to be played continuously. Refer to timing diagram below.

External Segment Switch Continuous

In this mode, the next segment is determined by the external 8 bit segment number

pdata(7..0). The timing of the segment switch is controlled by the input strobe

patt_trig_in2. The next segment number is strobed into the ARB on the rising edge of

patt_trig_in2. The current segment will complete before switching to the next segment.

This segment will play continuously until a new segment is strobed in by patt_trig_in2.

Minimum

t1 Segment period 150 samples

t2 Segment setup time 150 samples

t3 pdata setup time 50 ns

I/Q_out

symbol_

sync_out

pdata(7..0)

Load

External

Segment

Trigger

patt_trig_in2