5.Panel Operation
key to return to the modulation mode interface or press the Mode key to
return to the modulation selection mode.
(4) Select modulating wave source:
Press the Source softkey to select Internal or External as the modulating
wave source.
If you select Internal, the modulating wave is set as a Square with 50%
duty cycle. Press the ASK Rate softkey to set the ASK rate. The rate at
which the output amplitude shifts between the carrier amplitude and the
modulating amplitude is determined by ASK rate (for internal source only).
The range is 2 mHz – 1 MHz.
If you select External, use the Sync/Ext Mod/Trig/FSK connector at the
rear panel to input the external modulating signal.
(5) Set modulating amplitude:
Press the Amplitude softkey to set the modulating amplitude.
PSK (Phase Shift Keying)
Phase Shift Keying modulation is a modulation technique that shifts the output
signal phase between two phases: the carrier phase and modulating phase.
Carrier wave phase shifts to the modulating phase with the specified PSK rate,
and then returns to the original phase. The PSK user interface is shown
below.
Mod
Type
Load
Parameter 1
Parameter 2
Modulating wave
Carrier wave
Figure 5-20: PSK user interface
How to set the parameters of PSK
(1) Press the Mode function key, press the NextPage softkey twice
more,then press the PSK softkey to enter PSK user interface.
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