Tektronix TDS5054, User Manual

Page: 67 / 361

System Overview Maps
2- 10
TDS5000 Series User Manual
Process Overview Map
Process overview
Process block description
Idling...
Reset
Abort
Power on
Power off
Arm
1. The oscilloscope starts in the idle state; it enters this state
upon power up, upon receiving most control setting changes,
or upon finishing acquisition tasks.
Implement
setup
Stop condition?
Yes
No
2. Control settings are implemented as they are requested.
When you toggle the RUN/STOP control to RUN, the
oscilloscope starts the hardware.
Acquire
pretrigger points
3. The oscilloscope acquires samples until the pretrigger portion
of the waveform record (channel) being acquired is filled.
Trigger
accepted
Yes
No
4. The oscilloscope then begins waiting for a trigger. Acquiring
continues to take place, keeping the pretrigger points current,
until triggering criteria are met or a trigger is forced (Auto
trigger mode only). The oscilloscope accepts the trigger.
Acquire
posttrigger
points
5. The oscilloscope acquires samples until the posttrigger
portion of the waveform record (channel) being acquired is
filled.
Waveform
record
complete?
No
6. If averaging or enveloping is on, the record becomes part of
the multi-acquisition record that these modes produce. The
process loops back to step 3 above to acquire additional
records until the number of acquisitions required for the
acquisition mode currently set are processed, and then
processing continues to step 7 below.
Waveform
available
Yes
7. At this point the acquisition record is in DSP memory and is
available to the oscilloscope for measurement of its
parameters, display, and so on.
The oscilloscope then checks for a user-specified stop
condition and either returns to its idle state or continues at
step 3, according to what it finds.