Appendix E: Search and Trigger Command Sequence
Examples
The following are some example command sequences that show a variety of
different sear ches and triggers. The commands in these sequences are not
order-dependent.
To use these examples, c onnect channel 1, channel 2, channel 3 and channel 4 to
the probe compensation signal located on the right hand side of the front panel.
The search and trigger command group sections contain more information on
general searc h and trigger concepts. ,
Example 1
: Single Threshold Edge Search
Goal: Search the channel 2 waveform and place a mark at each instance where it
crosses below a threshold of 1.4 volts.
Command Comment
*RST;:*OPC? Resets the oscilloscope and waits for that operation to complete
(approximately 1 to 5 seconds depending on the complexity of
the previous setup).
display:waveview1:ch2:state 1
Turns the CH2 waveform on.
:AUTOset EXECute>;*OPC? Autosets the displayed waveform CH2 and waits for the auto
setup to complete.
:SEARCH:SEARCH1:TRIGger:A:TYPe EDGE Specifies that this will be an edge search (a mark will be placed
when the source waveform passes through a specified threshold
level in the specified direction).
:SEARCH:SEARCH1:TRIGger:A:EDGE:SOUrce CH2 Specifies the CH2 waveform as the source w aveform .
:SEARCH:SEARCH1:TRIGger:A:LOWerthreshold:CH2 1.4 Specifies 1.4 volts as the threshold l evel.
:SEARCH:SEARCH1:TRIGger:A:EDG E:SLOpe FALL Specifies the falling edge as the d irection.
:SEARCH:SEARCH1:STATE 1
Turns the search on.
:SEARCH:SEARCH1:TOTal? Returns 4, indicating that CH2 fell below the 1.4 volt threshold 4
times.
:SEARCH:SEARCH1:LIST? Returns a list of the 4 marks:
CH2,11.2411,11.2411,11.2411,-1.5504E-3,
0.0E+0,0.0E+0,0.0E+0;CH2,37.0737,37.0737,37.0737,
-517.0517E-6,0.0E+0,0.0E+0,0.0E+0;CH2,62.9163,62.9163,62.9163,
516.6517E-6,0.0E+0,0.0E+0,
0.0E+0;CH2,88.7489,88.7489,88.7489,
1.5500E-3,0.0E+0,0.0E+0,0.0E+0
MSO54, MSO56, MSO58, MSO58LP Programmer E-1
To Next Page
Loading...
Need help?
General
