3 Short-Range Comms & IoT Mode
3.3 LoRa (CSS) Demodulation Measurement
100 kHz
Selects the 100 kHz (“>20 kHz”) post demodulation low pass filter. It is a 9-pole
Bessel filter designed for minimum overshoot (<1% nom) on square wave
modulation, its 3 dB cutoff frequency is 100 kHz.
Example
:LORA:LPF LPF100K
Manual
Selects the user-defined filter as the post demodulation low pass filter. It is a 5-pole
Butterworth filter, its 3 dB cutoff frequency can be changed through the
“[:SENSe]:LORA:LPFilter:MANual[:FREQuency] <freq>” command.
Example
:LORA:LPF MAN
User-defined Lowpass Filter
Sets the 3 dB cutoff frequency of the user-defined lowpass filter.
Remote Command
[:SENSe]:LORA:LPFilter:MANual[:FREQuency] <freq>
[:SENSe]:LORA:LPFilter:MANual[:FREQuency]?
Example
:LORA:LPF:MAN 500kHz
:LORA:LPF:MAN?
Notes Adjusts the cutoff frequency of the user-defined low pass filter
Dependencies Only active when Lowpass filter type is Manual
Preset 300 Hz
State Saved Saved in instrument state
Min 90 Hz
Max Half of the maximum DIF BW
3.3.8.7 Global
The controls in this menu apply to all Modes in the instrument.
Some controls (for example, "Global Center Freq" on page 1717) allow you to switch
certain Meas Global parameters to a Mode Global state. These switches apply to all
Modes that support global settings. For example, no matter what Mode you are in
when you set Global Center Freq to ON, it applies to all Modes that support Global
settings.
Short Range Comms & IoT Mode User's &Programmer's Reference 417
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