nRF51822 RF Performance Test

[Bimal]

I have designed an custom application board based on nRF51822 SoC, Now i wanted to do testing on RF front. I found one Test guideline(RF_Performance_Test_Guidelines_v1_0.pdf) which talks on how nRF SoCs can be tested. Also i found one pdf which describes RF testing instructions with reference to nRF24L01+ chip(RF_Test_Instructions_nRF24L01P_v1_0.pdf) in detail on regester settings and set-up.

But i didn't found any similar reference document for nRF51822, Can you help me out here. How can i perform RF performance test on my nRF51822 chipset, What are the register setting required to do so in each test cases.

[run_ar]

Please take a look at the radio test eksample in the SDK: nRF5_SDK_11.0.0-2.alpha_bc3f6a0\examples\peripheral\radio_test

If you are working with Bluetooth you could use the DTM project for testing: nRF5_SDK_11.0.0-2.alpha_bc3f6a0\examples\dtm

[Bimal]

Hi, I wanted to have some basic RF test with my spectrum analyzer as below:

• Output Power
• Frequency Accuaracy
• -20dB Bandwidth
• RX local oscillator leakage
• Adjacent channel bandwidth

Can you help me out, which will be best suitable to use.

[run_ar]

I would use the radio test example for that. Documentation here.

[Bimal]

Hi Run,

I have confusion that, this nRF51822 SoC is BLE single Mode. right! Than while running Radio Test example how it can ask for channel from 0 to 80, where in BLE it should have only 40 channels. How it will be done?

[run_ar]

From core spec: The LE system operates in the 2.4 GHz ISM band at 2400-2483.5 MHz. The LE system uses 40 RF channels. These RF channels have center frequencies 2402 + k * 2 MHz, where k = 0, ..., 39.

The nRF51822 frequency = 2400 + FREQUENCY (MHz). (FREQUENCY is the register setting)