sim900 at+ceng measuring unit

[Edi Sukriansyah]

dear

i have arduino gprs shield using chipset sim900.
I’d like to ask about some CENG at command.
1. Always I get the TA as 255, as I understand the value of TA ranges from 0 to 63, so what dose the 255 value means for TA?
2. I need more information about

a. <rxl > receive quality what is the measuring unit?
b. <rxq> recive quality what is the measuring unit?
c. <rla> receive level access minimum what is meant by “receive level access minimum” and what is the measuring unit?
d. <txp> transmit Power maximum CCCH what is meant by “transmit Power maximum CCCH” and what is the measuring unit?

https://obrazki.elektroda.pl/2390531600_1389509896.jpg

 

[kgshankar1980]

For what purpose you are using AT+CENG command...Normally this command will not be used for any application...

Pls tell what is your exact requirement.

 

[sepehr_ta]

The measured signal level shall be mapped to an RXLEV value between 0 and 63, as follows:
RXLEV 0 = less than -110 dBm.
RXLEV 1 = -110 dBm to -109 dBm.
RXLEV 2 = -109 dBm to -108 dBm.
:
:
RXLEV 62 = -49 dBm to -48 dBm.
RXLEV 63 = greater than -48 dBm.