User`s guide

Chapter 2 Front Panel Operations RIGOL
DSG3000 User’s Guide 2-17
“*TRG” command is sent.
 External Trigger
In external trigger, the RF signal generator accepts the trigger signal input
from the [TRRIGER IN] connector (as shown in the figure below) at the
rear panel. If the sweep mode is set to “Cont”, the instrument starts a
sweep each time a TTL pulse signal with specified polarity is received. If the
sweep mode is “Single”, press Single to meet the single sweep condition.
After that the instrument starts a sweep and then stops each time a TTL
pulse signal with the specified polarity is received.
To specify the polarity of the TTL pulse signal, press Trig Slope to select
“Pos” or “Neg” and the default is “Pos”.
2. Point Trigger Mode
Select the trigger mode of each sweep point in a sweep period.
Press SWEEP and use the page up/down key
to open the 2/3 menu page;
then, press Point Trig to select “Auto”, “Key”, “Bus” or “Ext” trigger.
NOTE: The following descriptions are valid when the corresponding trigger
mode of sweep period is met.
 Auto Trigger
The default mode is auto. If the sweep mode is set to “Cont”, the
instrument will start sweeping each sweep point continuously within a
sweep period once a sweep type is selected. If the sweep mode is set to
“Single”, press Single to meet the single sweep condition. After that the
instrument starts to sweep and then stops after the sweep period is
finished.
 Key Trigger
After selecting “Key” trigger, if the sweep mode is set to “Cont”, the
instrument starts to sweep a point each time Trigger at the front panel is
pressed. If the sweep mode is “Single”, press Single to meet the single
sweep condition. At this point, the instrument starts to sweep a point and
stops after the sweep period is finished each time Trigger at the front
panel is pressed.