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3 Short-Range Comms & IoT Mode

3.3 LoRa (CSS) Demodulation Measurement

3.3.8.6 Filters

Sets the filter applied after the demodulation.

If a filter is switched on but fails to be applied, the error “161 Setting Modified;

Filters not applied” will appear.

Highpass Filter (Post Demod)

Adjusts the post demodulation high pass filters. This filter allows you to remove

unwanted low-frequency components from the modulating signal.

Remote

Command

[:SENSe]:LORA:HPFilter OFF | HPF20 | HPF50 | HPF300 | HPF400 | MANual

[:SENSe]:LORA:HPFilter?

Example

:LORA:HPF HPF20

Notes OFF = No filtering

HPF20 = Use 20 Hz high pass filter

HPF50 = Use 50 Hz high pass filter

HPF300 = Use 300 Hz high pass filter

HPF400 = Use 400 Hz high pass filter

MANual = Use user-defined high pass filter

Preset

OFF

State Saved Saved in instrument state

Off

This selection turns the post demodulation high pass filter off.

Example

:LORA:HPF OFF

20 Hz

Sets the post demodulation high pass filter to 20 Hz. It is a 2-pole Butterworth filter,

its 3 dB cutoff frequency is 20 Hz.

Example

:LORA:HPF HPF20

Short Range Comms & IoT Mode User's &Programmer's Reference 413

Keysight x-series Instruction Manual

Other manuals for Keysight x-series