RIGOL Chapter 2 Front Panel Operations
2-26 DSG800 User Guide
External Gate
In external gate mode, the RF signal generator receives the external gated
signal input from the [TRIGGER IN] connector at the rear panel. The
instrument starts a pulse modulation within the valid level range each time a
gated signal with the specified polarity is received (as shown in the figure
below). To specify the polarity of the external gated signal, press Gate Polar to
select "Normal" or "Inverse" and the default is "Normal".
External Gated Signal
Pulse Modulating Signal
The Valid Pulse Modulating Signal
Key Trigger
In key trigger mode, the instrument starts a pulse modulation each time Key
Trig is pressed.
Bus Trigger
In bus trigger mode, the instrument starts a pulse modulation each time the
"*TRG" command is sent.
Note: When "Ext" modulation source is selected, the above-mentioned menus are
grayed out and disabled.
Pulse Output
Press Source to select "Int" modulation source; press Pulse Out to select "On" or
"Off".
On: turn on the pulse output function. At this point, the RF signal generator can
output the pulse signal generated by the internal pulse generator from the
[PULSE IN/OUT] connector at the rear panel. Note that this output signal is
related to the pulse Mode setting.
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