cc1120 development board

For the best support, you should use the CC1120 together with the SmartRF TrxEB. Concerning your problems, can you be a bit more specific? What jumpers have you changed on the SmartRF05EB?

Br,
ABO 

There is a  power source jumper P11. Pins 1-2 are for battery power source, and pins 2-3 are for USB/DC power source. I put the jumper on pins 1-2 .

I see the same thing here, I will have to look into this further. In the meantime I hope you can use the SmartRF TrxEB or the 05EB powered using USB.

Br,
ABO 

I have only 05EB boards, and they work fine when USB powered.

There is another issue concerning minimum output power.If you look at  High Performance RF Transceiver for Narrowband Systems. (Rev. B) ,

on page 12 it says that minimum output power can be set to -40 dBm within coarse step size range. What is a coarse step size range? 

In  CC112x Low-Power High Performance Sub-1 GHz RF Transceivers User’s Guide, on page 35 a formula for output power calculation is given.

According to the formula (output power = (PA_POWER_RAMP+1)/2) -18, where 3 ≤ PA_POWER_RAMP ≤ 64 it is impossible to get -40dBm output power.

For receiver sensitivity measurements I would require transmitter output power to be as low as possible, so I am wondering is there a way to lower it down to 40 dBm?

Hi Ana,

To keep it as easy as possible to search for answers in the forum, could you please post your last question in a new thread with a more specific title?

Thanks!

ABO