12-16-2013, 06:21 PM
0
I followed the tutorial and tried again with different PC's but also different operating systems - XP and Win7 - there is no any reaction from my Box.
Also not in Hyperterminal. Neither with 115 200 nor with 57 600 Baud.
No way.
I also removed the SIM and also measured the 5V before and after initializing of the SIM. So from the SIM 2.10 side, there is everything ok.
Could it be, that there is a problem with the RS232 chip (its a MAX3222).
I measured also the voltage on RX and TX, which is only +/- 2,4V.
Is this voltage ok?
Also not in Hyperterminal. Neither with 115 200 nor with 57 600 Baud.
No way.
I also removed the SIM and also measured the 5V before and after initializing of the SIM. So from the SIM 2.10 side, there is everything ok.
Could it be, that there is a problem with the RS232 chip (its a MAX3222).
I measured also the voltage on RX and TX, which is only +/- 2,4V.
Is this voltage ok?