5.Panel Operation
(2) Select carrier wave shape:
The carrier wave can be Sine, Square, Ramp, or Arbitrary wave (except
DC). Press , , , or to select a desired carrier wave
shape.
(3) Set carrier wave parameters:
Press the wave shape key of the selected carrier wave to display the
waveform and parameters of the carrier wave. You can change the
parameters of the carrier wave. Press the corresponding carrier waveform
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 Rate softkey to set the PSK rate. The rate at which
the output phase shifts between the carrier phase and the modulating
phase is determined by PSK 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 PSK phase deviation:
Press the Deviation softkey to set the modulating phase deviation.
FSK (Frequency Shift Keying)
Frequency Shift Keying modulation is a modulation technique that shifts the
output signal frequency between two frequencies: the carrier frequency and
hop frequency. The shift frequency (FSK rate) is determined by the internal
signal level. The FSK user interface is shown below.
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