Oscillate Period; Pwm; Select Pwm Modulation; Carrier Waveform Shape - Hantek HDG2000B Series User Manual

5.12.6 Oscillate Period

Oscillate period is the oscillation period of internal crystal oscillator. The settable range of the
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
HDG2000B 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.
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