User Manual 55
oscillate period is related to the OSK rate currently selected. Press
OscTime
to highlight it and
use the numeric keyboard or direction keys and knob to input the desired period. The default
range is from 8ns to 4.99975ms.
5.13 PWM
A modulated waveform consists of a carrier waveform and a modulating waveform. In PWM, The
pulse width of the carrier waveform varies with the voltage level of the modulating waveform.
5.13.1 Select PWM Modulation
PWM is only available for the Square waveform.
Press
Square
at the front panel first and then press
Mod
to enable PWM function.
If the
Square
function key has not been selected, PWM in
Type
menu is unavailable.
When
Mod
is enabled,
Sweep
or
Burst
will be automatically disabled (if enabled currently).
After PWM is enabled, the instrument will generate PWM waveform with the currently
specified carrier and modulating waveforms.
5.13.2 Carrier Waveform Shape
PWM is only available for the Square waveform.
Press
Square
at the front panel to select Square waveform.
5.13.3 Duty Cycle
After the carrier waveform shape is selected, press
Duty
on Square menu to highlight "Duty" and
input the desired value using the numeric keyboard or direction keys and knob.
5.13.4 Modulating Waveform Source
Press
Mod
->
Source
to select "Int" or "Ext" modulating waveform source
HDG6000B(C) can receive modulating waveform from Internal (default), External, or Other
Channel. Press
Mod
->
Source
to select the modulation source.
Internal Source
When internal modulation source is selected, press
Shape
to select Sine, Square, Ramp, Noise
or Arb as modulating waveform. The default is Sine.
Sine waveform
Square: 50% duty cycle.
Ramp: 50% symmetry.
Note: Noise can be used as modulating waveform but cannot be used as carrier waveform.
