Data Sheet

Revision 2.0 Page 68 of 74
nRF24L01 Product Specification
Appendix C - Carrier wave output power
The output power of a radio is a critical factor for achieving wanted range. Output power is also the first test
criteria needed to qualify for all telecommunication regulations.
Configuration
1. Set PWR_UP = 1 in the CONFIG register
2. Wait 1.5ms PWR_UP->standby
3. Clear the PRIM_RX in the CONFIG register
4. Set all auto acknowledgement functionality in the EN_AA register and the SETUP_RETR register
to 0
5. Set output power
6. Set PLL_LOCK to 1
7. Configure TX address as 5 bytes with all 0xFF
8. Fill the TX payload with 32 bytes of 0xFF
9. Turn off CRC
10. Set the wanted RF channel
11. Transmit the packet by pulsing CE (minimum 10µs)
12. Wait until the transmission ends (indicated by IRQ going active, a fixed delay of 1ms can also be
used)
13. Set CE high
14. Use the SPI command for re-use of last sent packet (REUSE_TX_PL)
15. Keep CE high as long as the carrier is needed
The nRF24L01 should now output a carrier.
Note: This is not a clean carrier but is slightly modulated by the preamble.