Hi All: i made a nrf52832 board, but i test it, the frequency offset is 150K, it's too big. what can i do to change it by software ?
Hi All: i made a nrf52832 board, but i test it, the frequency offset is 150K, it's too big. what can i do to change it by software ?
Hi,
With a constant, unmodulated carrier, an offset at 15 kHz is perfectly normal. I'm measuring an offset at 25kHz here. With a modulated carrier (when you are sending data) at 2402M Hz, you should see ±250 kHz offset.
This offset is too big. Please make sure that you are using load capacitors that are within specifications. The load capacitors are the capacitors connected to the 32 MHz crystal ( C1 and C2 connected to the 32 MHz crystal in our reference design).
The value of these capacitors should satisfy this formula:
C1 = C2 = 2Cl - 4 pF
Cl: Load capacitance of the crystal (found in the crystal datasheet)
Hi, I measure the 32Mhz cystal ,the reusult is 32.0006Mhz, 32768hz cystal didn't work, this is normal?
Hi, I measure the 32Mhz cystal ,the reusult is 32.0006Mhz, 32768hz cystal didn't work, this is normal?