Technical data

Using Trigger Holdoff to Synchronize Acquisition/Display on Complex Signals A
Agilent Infiniium 9000 Series Oscilloscope Evaluation Guide 69
9 Adjust trigger level to
approximately 3 volts,
which is down
approximately 1/3
below the highest
peak. Using this level
will provide potential
re-arm times during
the valleys of the
envelope.
10 Estimate the cycle
time of this complex signal – note that there are two unique
envelopes per cycle time (use markers if you wish). Note that the
cycle time is approximately 450 µs. On the front panel, press
[Markers], Manual Placement, and set Ax to top of peak of small
envelope and Bx to top of the peak of the next small envelope. The
delta is approximately 450 µs.
The correct holdoff
time to achieve stable
trigger on this signal is
a value slightly less
than this cycle time.
Note that 400 µs
should work.
11 Press [Run/Stop] key
to start unstable
acquisitions again.
Set up the trigger:
12 From the on-screen main menu, choose Trigger>Setup Trigger...
(or press [Menu] in the front panel Trigger controls).
13 In the Trigger Setup dialog, click Conditioning....