Keysight Technologies InfiniiVision 3000 X Series, User Manual

Page: 179 / 432

Trigger Mode/Coupling
11
Keysight InfiniiVision 3000 X-Series Oscilloscopes User's Guide 179
To enable or disable trigger noise rejection
Noise Rej adds additional hysteresis to the trigger circuitry. By increasing the
trigger hysteresis band, you reduce the possibility of triggering on noise. However,
this also decreases the trigger sensitivity so that a slightly larger signal is required
to trigger the oscilloscope.
1 Press the [Mode/Coupling] key.
2 In the Trigger Mode and Coupling Menu, press the Noise Rej softkey to enable or
disable.
To enable or disable trigger HF Reject
HF Reject adds a 50 kHz low-pass filter in the trigger path to remove high
frequency components from the trigger waveform.
You can use HF Reject to remove high-frequency noise, such as AM or FM
broadcast stations or noise from fast system clocks, from the trigger path.
1 Press the [Mode/Coupling] key.
2 In the Trigger Mode and Coupling Menu, press the HF Reject softkey to enable
or disable.
Pass
Band
50 kHz
DC
0 dB
-3 dB