Quick Reference 2
Keysight InfiniiVision 1000 X-Series Oscilloscopes User's Guide 51
External Trigger Input
The external trigger input can be used as a source in several of the trigger types.
The external trigger BNC input is labeled Ext Trig.
The external trigger input impedance is 1M Ohm. This lets you use passive probes
for general-purpose measurements. The higher impedance minimizes the loading
effect of the oscilloscope on the device under test.
Trigger holdoff [Trigger] > Holdoff
The correct holdoff setting is typically slightly less than one repetition of the waveform.
Table 14 Trigger Mode, Coupling, Reject, Holdoff Features (continued)
Feature Front Panel Key/Softkey Location (see built-in help for more information)
Maximum voltage at oscilloscope external trigger input
150 Vrms, 200 Vpk
Table 15 External Trigger Features
Feature Front Panel Key/Softkey Location (see built-in help for more information)
External trigger units [External] > Units (Volts, Amps)
External trigger
attenuation
[External] > Probe, Ratio/Decibels, Entry knob
External trigger
threshold
[External] > Threshold, Entry knob
External trigger range
[External] > Range, Entry knob
For DSOX1000-Series oscilloscopes only. On EDUX1000-Series oscilloscopes, the range is fixed at
8 V when you are using a 1:1 probe.
External trigger
waveform position
[External] > Position, Entry knob
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