3 Short-Range Comms & IoT Mode
3.3 LoRa (CSS) Demodulation Measurement
50 Hz
Sets the post demodulation high pass filter to 50 Hz. It is a 2-pole Butterworth filter,
its 3 dB cutoff frequency is 50 Hz.
Example
:LORA:HPF HPF50
300 Hz
Sets the post demodulation high pass filter to 300 Hz. It is a 2-pole Butterworth
filter, its 3 dB cutoff frequency is 300 Hz.
Example
:LORA:HPF HPF300
400 Hz
Sets the post demodulation high pass filter to 400 Hz. It is a 10-pole Butterworth
filter, its 3 dB cutoff frequency is 430 Hz.
Example
:LORA:HPF HPF400
Manual
Selects the user-defined post demodulation high pass filter. It is a 5-pole
Butterworth filter, its 3 dB cutoff frequency can be changed through the
“[:SENSe]:LORA:HPFilter:MANual[:FREQuency] <freq>” command.
Example
:LORA:HPF MAN
User-defined Highpass Filter
Sets up a post demodulation high pass filter manually. The filter is a 5-pole
Butterworth filter.
Remote Command
[:SENSe]:LORA:HPFilter:MANual[:FREQuency] <freq>
[:SENSe]:LORA:HPFilter:MANual[:FREQuency]?
Example
:LORA:HPF:MAN 500 Hz
:LORA:HPF:MAN?
Notes Adjusts the cutoff frequency of the user-defined high pass filter
414 Short Range Comms & IoT Mode User's &Programmer's Reference
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