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signal is determined by the OSK "Rate".
external Source
When external modulation source is selected, the signal generator receives the external
modulation signal from the [FSK/Trig/Sync/Extmod] connector on the rear panel.
8.12.5
OSK Rate
When internal modulation source is selected, press [Mod] >
⚫
Use the numeric keypad or direction keys and knob to input the desired rate value.
⚫
The rate range is from 2mHz to 1MHz and the default is 100Hz.
Note: This menu will be grayed out and disabled when the external modulation
source is selected.
8.12.6
Oscillate Time
Oscillate time is the oscillation period of internal crystal oscillator. The settable range of
the oscillate time is related to the OSK rate currently selected. Press [Mod] >
softkey and use the numeric keypad or direction keys and knob to input the desired time.
The default range is from 8ns to 4.99975ms.
8.13
PWM Modulation
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.
8.13.1
Select PWM Modulation
PWM is only available for the Square waveform.
Press [Wave] >
the PWM function.
⚫
If the Square function has not been selected as carrier waveform, PWM in
[Mod]
⚫
When
currently).
⚫
After PWM is enabled, the instrument will generate PWM waveform with the
currently specified carrier and modulating waveforms.
Copyright © Qingdao Hantek Electronics Co., LTD
Square
softkey, and then press [Mod] >
>Type
menu is unavailable.
Mod
is enabled,
Sweep
or
Rate
Type >PWM
Burst
will be automatically disabled (if enabled
Modulation
softkey to set.
OscTime
softkey to enable
HDG3000B User manual
55
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