MP7505 Series User Manual
Figure 5-23: OSK user interface
How to set the parameters of OSK
(1) Set carrier wave shape:
OSK carrier wave can only be sine wave. Press to set the carrier wave
shap.
(2) Press the Mod function key, then press the Type softkey, turn the rotary control
to select OSK, press the OK softkey.
Note: If Sine wave has not been selected, OSK in the menu is unavailable.
(3) Set carrier wave parameters:
Press to display the waveform and parameters of the carrier wave. You
can change the parameters of the carrier wave. Press Mod to return to the
modulation mode interface.
(4) Select modulating wave source:
OSK uses internal modulation source, and the modulating wave is set as a
Square with 50% duty cycle.
(5) Set OSK rate:
Press the OSK Rate softkey to set the OSK rate. The intermittence time and
oscillate time of the output signal is determined by OSK rate (for internal
source). The range is 2 mHz – 1 MHz.
(6) Set oscillate time:
Oscillate time is the oscillation period of internal crystal oscillator. The settable
range of the oscillate period is related to the OSK rate currently selected. Press
the Osc Time softkey to set the oscillate time. The range is 8ns - 249.75s.
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