GDS-800 Series Digital Storage Oscilloscope Operation Manual
36
If start trigger signal is selected, the DELAY time can be set by the VARIABLE
knob.
If the main trigger is selected, presses the F4 softkey to select the start trigger
signal level from the following three levels.
TTL: This is the mode for the TTL signal measurement and start trigger signal
are set to +1.4V.
ECL: This is the mode for the ECL signal measurement and start trigger signal
are set to -1.3V.
USER: Select USER mode and rotate the VARIABLE knob to define the
specific start trigger signal level. (The adjustable start trigger signal level range:
±12V)
Note: All accuracy of these signals’ level are based on the probe
×
1 only
z By Event: Waits the user-defined delay trigger events and then acquires.
Rotate the VARIABLE knob to select the specific delay event. (Numbers of
events: 2~65000)
Trigger Point
Main trigger
(From CH1 or CH2)
Start trigger
(From external)
Trigger
Start of external trigger
count
123
Figure 5-19: Event delay trigger. Number of set event: In case of three.
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