20737 with client Rx fading?

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cross mob
Anonymous
Not applicable

====================

SDK: 2.2.1

Tag: 920737.

app: OTA hello-sensor app  .

OTA firmware size ~ 30KB.

====================


Description:

Our customer encounters one problem, they buy 3 devices
and put into 3 rooms, each device with its Tx power set by max. 4-dbm.

First we put devices beside client handset scanning and check client Rx ~ -50~ -60 dbm.

but after put them away from client, distance approximately 20m 25m 35m (of which
Rx is  -70dbm, -80dbm and -95dbm) and the third one is easily disconnected.

Investigation:

- already set     blecm_setTxPowerInADV(4) for 4-dbm.

- is any fading issue there in 20737 tag, any parameter related with for adjustment?

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1 Solution
BoonT_56
Employee
Employee
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The figures you obtained are within expectation. Of course we should expect the receive signal strength to decrease gradually according to distance, and eventually so much so resulting in a link drop. In reality where PCB-based antenna is used, the effective range could be much reduced.

View solution in original post

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2 Replies
BoonT_56
Employee
Employee
500 likes received 250 likes received 100 likes received

The figures you obtained are within expectation. Of course we should expect the receive signal strength to decrease gradually according to distance, and eventually so much so resulting in a link drop. In reality where PCB-based antenna is used, the effective range could be much reduced.

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BoonT_56
Employee
Employee
500 likes received 250 likes received 100 likes received

leo_su

Is this still a concern?

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