Sealey TA4000 Manual page 60

Pulse Width: The Pulse Width adjust range is 10ns~10s. When the condition is met ,it
will trigger and acquire the waveform.
The user can also change the trigger setting on the trigger panel in the sidebar.
When the alternative trigger is on, the trigger sources come from two vertical channels. This
mode can be used to observe two non-related signals. You can choose two different
trigger modes for the four vertical channels.
Set ALT System
Mode: Select the trigger mode.
Trigger Channel: Set the Trigger Channel to CH1,CH2,CH3 or CH4.

Original Language Version TA4000 Issue: 1 - 06/09/11