Hello
I am configuring CC1020 as RX and following are the default settings
// X-tal frequency: 14.745600 MHz Internal
// X-tal accuracy: +/- 5 ppm
// RF frequency A: 927.678900 MHz Active Rx
// RF frequency B: 927.678900 MHz Inactive Tx
// Frequency separation: 216 kHz
// Data rate: 38.400 kBaud
// Data Format: Manchester Accurate
// RF output power: +5 dBm
// Channel width: 500 kHz
// Modulation: FSK Dithering enabled
// Lock: Continuous
// Carrier sense offset: 0 dBm DCLK squelch disabled
// Operator Mode: Tx
Later on I am configuring the RX frequency to 902.9751 MHz.
My transmitter has the following spectrum
But when I configure CC1020 as transmitter the spectrum look a little different as below.
when I use CC1020 on the extra board I have as transmitter, then the RX using CC1020 work. But with the original transmitter, RX does not work. I can see that only random patterns are coming from the DIO pin when trying to receive with the original transmitter.
Although I set 216kHz for deviation, CC1020 produce around 256kHz of deviation is this fine?
How much is the allowable difference in centre frequency between TX and RX ?
