Rigol DG811, Руководство пользователя

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RIGOL Chapter 2 Front Panel Operations
2-48 DG800 User's Guide
To Select Modulation Source
Tap the Source parameter selection field to select an "Internal" or "External"
modulation source.
1. Internal Source
When the internal source is selected, the modulating waveform is set as a Square
with 50% duty cycle. At this time, the rate at which the output frequency "shifts"
between "carrier frequency" and "hop frequency" is determined by the
modulation rate.
2. External Source
When the external source is selected, the generator receives the external
modulating signal from the rear-panel [CH1/Sync/Ext Mod/Trig/FSK]
connector.
Note: The [CH1/Sync/Ext Mod/Trig/FSK] connector controlling ASK
modulation externally is different from controlling AM/FM/PM modulations
externally. While controlling the FSK modulation, you can set the polarity.
To Set Modulating Rate
When the internal source is selected, tap the Mod.Rate parameter input field and
use the numeric keypad to set the rate at which the output frequency shifts between
"carrier frequency" and "hop frequency".

You can also use the arrow keys and the knob to input a desired frequency
value.

The frequency range is from 2 mHz to 1 MHz, and the default is 100 Hz.
Note: When the external modulation source is selected, this menu will be grayed out
and disabled.
To Set Hop Frequency
Hop frequency indicates the
frequency of the modulating waveform. The range of the hop frequency is
determined by the currently selected carrier waveform. Tap the Hop Freq parameter
input field and use the numeric keypad to input a desired frequency value. You can
also use the arrow keys and the knob to input a desired frequency value.

Sine: 1 μHz to 35 MHz

Square: 1 μHz to 10 MHz

Ramp: 1 μHz to 1 MHz

Arb: 1 μHz to 10 MHz