5.Panel Operation
and two hop frequencies. The shift frequency (3FSK rate) is determined by the
internal signal level of the instrument. The 3FSK user interface is shown
below.
Mod
Type
Load
Parameter 1
Parameter 2
Modulating wave
Carrier wave
Parameter 3
Figure 5-22: 3FSK user interface
How to set the parameters of 3FSK
(1) Press the Mode function key, press the NextPage softkey twice more,
then press the 3FSK softkey to enter 3FSK user interface.
(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) Modulating wave source:
3FSK uses internal modulation source, and the modulating wave is set as
a Square with 50% duty cycle.
(5) Set 3FSK rate:
Press the Rate softkey to set the 3FSK rate. The rate at which the output
frequency shifts between the carrier frequency and the two hop
frequencies is determined by 3FSK rate (for internal source). The range is
2 mHz – 1 MHz.
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