GW Instek GDS-800 Series User Manual - Manual (Page 37)

GDS-800 Series Digital Storage Oscilloscope Operation Manual
37
If start trigger signal is selected, the number of events can be selected by the
VARIABLE knob.
If the main trigger is selected, press the F4 softkey and 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