Agilent Technologies DSO-X 4022A, User Manual

Page: 209 / 488

Trigger Mode/Coupling
11
Agilent InfiniiVision 4000 X-Series Oscilloscopes User's Guide 209
• Video coupling — is normally grayed- out, but is automatically selected
when Video trigger is enabled in the Trigger Menu.
Note that Trigger Coupling is independent of Channel Coupling (see "To
specify channel coupling" on page 82).
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