Datasheet

7. Trigger
Set the parameters of trigger function.
7.1. Trig Type
The trigger type includes Free Run, Video and External. Each icon of selected type will be shown at
the left of screen.
1. Free Run
Whenever the trigger ocnidtion is satisfied, the analyzer will generate trigger signal continuously.
2. Video
When detected voltage of a video signal exceed the video trigger level you specified, the analyzer
will generate the trigger signal. This mode is invalid for non-zero span, RMS Avg of zero span and
Voltage Avg of detector.
3. External
Input an external signal (TTL signal) through [TRIGGER IN] connector on rear panel. When the
trigger condition is satisfied, the analyzer will generate trigger signals.
7.2. Trig Setup
1. Trig Level
When you select trigger level in Video Mode, the trigger level line and value will be shown in the
screen.
You can modify this parameter by numeric keys, knob and arrow keys. For more details, please refer
to “Parameter Input”.
Table 2-18 Trigger level
*Note: This is in conncetion wit unit of current selected Y-axis.
2. Trig Edge
Set the trigger edge in External mode to Pos or Neg of Pulse.
-27-
Parameter
Description
Default
0 dBm
Range
-300 dBm ~ 50 dBm
Unit*
dBm
Knob Step
1 dBm
Arrow Keys Step
10 dBm