Locating Signals
Description.
This is the signal that produces Bursts of 100 ns wide logic pulses every 6.6 ms. The pattern is a pseudorandom bit
sequence that repeats every 128 bursts and has a 6.32
μ
s duration.
Frequent Anomaly
Board label.
FREQ_ANOM
Connector grid location.
C6, F7
Description.
There are two frequently occurring anomalies in this pulse train.
A half height runt signal occurs approximately every 104.8 ms. Use a Runt trigger to isolate the signal.
A 50 ns (narrow) pulse appears approximately every 104.8 ms. Use a Pulse Width trigger to isolate the signal.
The pulse train is a repeating group of three pulses. The three pulses are 100 ns, 200 ns, and 100 ns wide, with a 100 ns low
between. The group repeats at a 1.6
μ
s rate.
The anomaly is a group of four pulses. The four pulses are 100 ns, 50 ns (narrow), 100 ns (runt), and 100 ns wide, with a
100 ns low between, except for a 50 ns low before the runt.
Rare Anomaly
Board label.
RARE_ANOM
Connector grid location.
C5, D7
Demo 2 Board Instruction Manual
123
Summary of Contents for DPO2000 Series
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