Table of Contents
Advertisement
Specifying
a
Trigger
Condition
To capture the data and then place the data of interest in the center of
the display of the Timing Waveforms menu, you need to tell the logic
analyzer when to trigger. Since the first event of interest is when the
LRAS is asserted (negative-going edge of RAS), you need to tell the
logic analyzer to trigger on a negative-going edge of the RAS signal.
-
1. Select the Timing Trace menu by pressing the TRACE key.
2. Set the trigger so that the logic analyzer triggers on the
negative-going edge of the RAS.
a. Place the cursor on the Then find Edge field under the label RAS,
then press SELECT.
b. Place the cursor on the . (period) in the pop-up and press
SELECT once. Pressing SELECT once in this pop-up changes a
period to J which indicates a negative-going edge.
c. Place the cursor on Done and press SELECT. The pop-up closes
and a $ will be located in this field. The $ indicates an edge has
been specified even though it can't be shown in the HEX base.
[TEsTI-
llnlng
Trace
Speclflcatlon
Trace
rnodel~j
firmed by 1-1
Acauisition
model Transltlonal
)
Label
>
Base
)
Find
Patter
Pro
Then
fin
Edg
sent
for
I,I
1
30
ns
]
d
8 lrii
-
Figure
20-5.
Trigger Edge Specified
Timing Analyzer Measurement
Example
HP 16528/1653B
20-8
Front-Panel Reference
Advertisement
Chapters
Table of Contents
