Chipcon CC1020

christophe 19 years ago

I all,

I'm working on the RF module Chipcon CC1020. I would like to know if somebody has a knowledge about the next point :

I would test the processing signal time between the input signal (DIO pin) and the output (Antenna). My parameters are :

Central frequency : 915MHz Data Type : NRZ Modulation : GFSK Power supply : + 3Vcc +/- 0.3Vcc Mode : Tx

The input signal on the DIO pin is :

Signal type : Square wave Amplitude : + 3Vcc Frequency : 12KHz

Thanks for yours answers.

Bests regards,

Christophe

Vote

joseph2k 19 years ago

Sounds straight forward to me. What do you have for test equipment?

JosephKK Gegen dummheit kampfen die Gotter Selbst, vergebens. --Schiller

Vote

vasile 19 years ago

So, let see how you'll do it please.

Vasile

Vote

joseph2k 19 years ago

A direct pll receiver should have less than a microsecond delay from 915 MHz input to analog output, superhetrodynes will be about 1 to 2 microsecond. Small enough to ignore for now. Use that to measure time dependant frequency and compare to the input data stream at the module terminals, expected mean delay for a completed symbol is about 1.5 symbol times (about 120 uS); for 12 KHz modulation rate the filter delays produce at least 40 uS delay and symbol time is 83 uS.

JosephKK Gegen dummheit kampfen die Gotter Selbst, vergebens. --Schiller

Vote

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required