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Tips and questions relating to the GPS modules from SFE
By bootloadernoob
#46677
Hi everyone,

I have a GE863-GPS and when I issue a AT+CFUN=0, check my current draw, it kept pulsing from 4mA up to about 24mA. Is it supposed to operate like this? Anyone have a fix or any idea on how to fix this.

I been, turning on and off, varies pins (RTS, DTR.....) Taken of ring line, everything and anything, to see If I can get a stable current draw.

Thank you, for any help in advance.
By bootloadernoob
#46795
OK, I'm starting to believe that the GE wakes up on its own, every second or so, to maybe check network or something. Because it's too consistent.
By duppyman
#46943
maybe your ge863 is on
By bootloadernoob
#46945
I want to keep it on, it's the sleep (powersave) mode thats the problem.
By duppyman
#46946
which sleep mode are you using?
By bootloadernoob
#46947
I tried both cfun=0 and cfun=5, no change :(
By duppyman
#46948
well i think with the telit checks the network every few seconds so you might want to double check your network settings like AT+COPS?
By falingtrea
#46969
According to the data sheet the AVERAGE current draw in CFUN=0 or CFUN=5 is 3.4-7.3 mA with the following note:

Worst/best case depends on network configuration and is not under module control

So I would say that it is communicating with the network when you see the current spike.
By bootloadernoob
#46988
That makes sense falingtrea :( .But do you think it should go that high?
By falingtrea
#47046
I have seen 2 amp pulses on some cell modules so a 24mA one is not suprising. More than likely they are turning on the receiver to see if there is any traffic for the module.
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