Wireless & Sensing Products
Development Kit User Guide
Rev.1.0
UG.DEV.SX1280-1.W.APP
February 2017
13 of 15
Semtech
GFSK Modulation
7.3.
The radio settings available for GFSK modulation are:
-
The Frequency (Freq) as described in
Section 7.5
-
The Transmission Power (Tx Power): in steps of 1 dBm between -18 dBm
and +13 dBm
-
Param 1: choose a data rate and an associated bandwidth (BW)
-
Param 2 : Modulation Index (Mod. i) between 0.35 and 4
-
Param 3: Bandwidth-Time bit period product (BT) of either 1, 0.5 or OFF
-
Payload: size of the payload between 12 and 248 bytes
Ranging Modem
7.4.
The radio settings available for the Ranging Modem are:
-
The Frequency (Freq) as described in
Section 7.5
-
The Transmission Power (Tx Pow): in steps of 1 dBm between -18 dBm and
+13 dBm
-
Param 1: choose a Spreading Factor between SF5 and SF10
-
Param 2 : choose a BandWidth (BW) of either 400 kHz, 800 kHz or 1.6 MHz
-
Param 3: The Coding Rate (CR) of the Forward Error Correction applied to
the packet, of either CR 4/5, 4/6,4/7, 4/8 or CRLI 4/5, 4/6, 4/7
-
Payload: size of the payload between 12 and 248 bytes
-
The button BEST SET selects the best settings for ranging
From this menu you can also access the Ranging Settings as in
Section 5.
Figure 16: GFSK Radio Settings Display
Figure 17: Ranging Modem Radio Settings Display
