6
User’s and Service Guide
E4438C Option SP2
Technical Specification
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)
6
6
6
6
Load
External
Segment
Trigger
t1
t3
patt_trig_in2
I/Q_out
pdata(7..0)
patt_trig_in2
t3
6
2
2
6
6
2
t2
Load
External
Segment
t1
symbol_
sync_out
Summary of Contents for E4438C
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