Hi Team,
Iam using CodeLess: 6.380.14.22
In my code i have set power level as +2.5 dBm and working as expected range like 25 to 30 meters.
But the same code is flashed to other Module, which is not working beyond 5 meters.
How do we say it is hardware of DA14531 MOD issue or Firmware issue?
If it is Hardware issue how can we fix it?
How can we check the power level is really set to +2.5dBm?
Regards,
Laxmi Narayana
Hi Laxmi,
did you resolve your range issue please? I am seeing something similar.
Raddy
Hi Raddy,
In my case, LNA in DA14531MOD is damaged. This is the reason we noticed BT Range issue.
Laxmi Narayana.
We first noticed instruments with a reduced range as well. We sent the units back to Renesas and they said the LNA was also damaged and most likely caused by ESD. We have ESD precautions in place already.
We are currently trying to get the PLT production kit up and running to test units RSSI value, but are struggling to see a difference between good and bad units.
Have you been able to filter out the bad modules in any way?
Do you know if your faulty modules are coming in as faulty or something is failing during your process?
Richard
In my case my Receiver LNA went bad. what you might measuring could be transmitter LNA.
Iam able to separate bad BT modules by testing different set-up using Dev-kit and signal generator.
It is also the Receiver LNA that is broken in our faulty units. Most of our units work to 50+ meters, but in the faulty units we see ~7meters.
We are soon to be trying to use the PLT board to measure the RSSI to separate bad from good so i can let you know how that goes.
Could you tell me how you test using the Dev kit and Sig Gen please.
I work for ETI Ltd in the UK. Where do you work please?