About TX power configuration accuracy or step 、range？

[HuiHuang]

Hi ：

IN 《nRF52832_PS_v1.8》 page 224 ,  tell us sth  about  the configuration  of  tx power， 

Q1: what is the power range?    -40  -   +4  dBm ？

Q2: what is the step of configuration ?   4dB  or  1dB ？ 

       PS:  there two tips , page 1 "20 to +4 dBm TX power, configurable in 4 dB steps"      ，————————  seem like 4dB step

               page 224 :  Pos4dBm 0x04 +4 dBm;    Pos3dBm 0x03 +3 dBm;    “Neg40dBm 0xD8 -40 dBm”  ———— seem  like  1dB step

THX

[Håkon Alseth]

Hi,

 

Q1: what is the power range?    -40  -   +4  dBm ？

This is the output power range that can be set, according to the TXPOWER register:

https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/radio.html?cp=5_2_0_22_13_9#register.TXPOWER

 

Q2: what is the step of configuration ?   4dB  or  1dB ？ 

       PS:  there two tips , page 1 "20 to +4 dBm TX power, configurable in 4 dB steps"      ，————————  seem like 4dB step

               page 224 :  Pos4dBm 0x04 +4 dBm;    Pos3dBm 0x03 +3 dBm;    “Neg40dBm 0xD8 -40 dBm”  ———— seem  like  1dB step

There are no specific steps. The values are defined in the register. Any other values than what are defined in the product specification shall not be used.

 

Kind regards,

Håkon

[HuiHuang]

take an example :  Pos2dBm   0x02    +2dBm ,  or  other power ,  What are the risks? 

[Håkon Alseth]

Hi,

 

HuiHuang said:

take an example :  Pos2dBm   0x02    +2dBm ,  or  other power ,  What are the risks? 

For the nRF52832, this is a value that is not listed in the register, and is therefore out of spec.

 

Kind regards,

Håkon