l
Click on a box to place a check mark next to a control signal
l
Click again to uncheck the box
l
By default, the analyzer searches all control signals, which means all boxes start out checked.
For example, if you are only interested in finding changes in
RTS
and
CTS
, you would check those two
boxes and uncheck all the other boxes. This tells the analyzer to look only at the
RTS
and
CTS
lines when
running the search. The other signals are ignored.
The control signals types include:
l
USB - Pin 1
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USB - Pin 2
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USB - Pin 3
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USB - Pin 4
Click here to learn more about the Breakout Box and Pins 1 - 4.
Searching for event where:
l
The first three options are all fairly similar, and are described together. These options are searching for an
event where:
o
One or more control signals changed
o
One or more control signals changed from off to on
o
One or more control signals changed from on to off
l
Searching for an event where one or more signals changed means that the analyzer looks at every control
signal that you checked, and see if any one of those signals changed state at any time.
o
If you want to look at just one control signal:
n
Check the box for the signal.
n
Uncheck all the other boxes.
n
Choose to search for an event where one or more signals changed.
n
The analyzer notes the state of the selected signal at the point in the buffer where the cursor
is, search the buffer, and stop when it finds an event where RTS changed state.
n
If the end of the buffer is reached before an event is found, the analyzer tells you that no
matches were found.
l
Searching for events where control signals changed state from off to on, or vice versa, is most useful if the
signals are usually in one state, and you want to search for occasions where they changed state.
For example:
o
If DTR is supposed to be on all the time but you suspect that DTR is being dropped
o
Tell the analyzer to look only at DTR by checking the DTR box and unchecking the others
o
Do a search for where one or more control signals changed from on to off.
o
The analyzer would search the DTR signal and stop at the first event where DTR dropped from on
to off.
Chapter 5 Navigating and Searching the Data
TELEDYNE LECROY
Frontline BPA low energy Hardware & Software User Manual
155
Summary of Contents for BPA LOW ENERGY
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