CC115L send unmodulate wave

Nightingale

Other Parts Discussed in Thread: CC115L

Hi,

I want use MCU to confige CC115L to send unmodeled wave ,and use it to measure TX power. I don't know exactly what's the procedure to do it.

I have successful use CC115L to send modulated data ,but i don't know how to send unmodulated wave.

over 7 years ago

0 TER over 7 years ago

TI__Guru**** 317180 points

You have done the correct selections in SmartRF Studio, now you just have to export the register settings into your code.
Also see e2e.ti.com/.../1544589

0 Nightingale over 7 years ago in reply to TER

Intellectual 440 points

Thank you very much. I have got unmodulated wave. But the power seems wrong. I set 7 dBm,while from the wave it shows 9 dBm. Is that in the reasonable error range?

In my code , I use this line to set TX POWER.

#define TI_CCxxx0_PATABLE 0x3E

TI_CC_SPIWriteReg(TI_CCxxx0_PATABLE, 0xC8);

0 Nightingale over 7 years ago in reply to Nightingale

Intellectual 440 points

Also ,when I set PA POWER to 10dBm ,measured 12dBm. But 10dBm is the MAX value of CC115L. I wander wherther my code is wrong.

0 TER over 7 years ago in reply to Nightingale

TI__Guru**** 317180 points

Note that PA power should be measured with RBW > 1 MHz.

It is not possible to program the CC115L wrong to get higher output power than spec'ed.

- Is this measured on a design using multilayer inductors or wirebond?

- Do you know that your spectrum shows the correct value? Do you have a calibrated source for testing?

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CC115L send unmodulate wave