Data Sheet

RIGOL 5 To Trigger the Oscilloscope
MSO4000/DS4000 User’s Guide
5-2
Trigger Source
Press MENU  Source in the trigger control area (TRIGGER) at the front panel to
select the desired trigger source. Siganls input from CH1 to CH4, the [EXT TRIG]
and [LOGIC D0-D15] connectors as well as the AC Line can all be used as trigger
source.
Analog channel input:
Signals input from analog channels CH1 to CH4 can all be used as the trigger source.
No matter whether the input of the channel selected is enabled, the channel can
work normally.
External trigger input:
External trigger source can be used to trigger on the fifth channel when all the four
channels are sampling data. The trigger signal (such as external clock and signal of
the circuit to be tested) should be connected to EXT or EXT/5 trigger source via the
[EXT TRIG] connector. You can set the trigger condition within the range of trigger
level (-0.8 V to +0.8 V).
Digital channel input:
Signals input from digital channels D0 to D15 can all be used as the trigger source.
No matter whether the input of the channel selected is enabled, the channel can
work normally.
AC line:
The trigger signal is obtained from the AC power input of the oscilloscope. This kind
of signals can be used to display the relationship between the signal (such as
illuminating device) and power (power supply device). For example, to stably trigger
the waveform output from the transformer of a transformer substation, which is
mainly used in related measurement of the power industry.