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)
CAUTION
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