User's Manual

Telit GE863-QUAD / GE863-PY
Hardware User guide
1vv0300715, Rev. ISSUE#0, - 21/02/06
Reproduction forbidden without Telit Communication written authorization – All Right reserved – Right of modification reserved page 2 of 71
Contents
1 OVERVIEW 5
2 HARDWARE COMMANDS 6
2.1 Turning ON the GE863-QUAD/PY 6
2.2 Turning OFF the GE863-QUAD/PY 8
2.2.1 Hardware shutdown 8
2.3 Hardware Unconditional Reboot 8
3 POWER SUPPLY 10
3.1 Power Supply Requirements 10
3.2 General Design Rules 11
3.2.1 Electrical design Guidelines 11
3.2.1.1 + 5V input Source Power Supply Design Guidelines 11
3.2.1.2 + 12V input Source Power Supply Design Guidelines 13
3.2.1.3 Battery Source Power Supply Design Guidelines 14
3.2.1.4 Battery Charge control Circuitry Design Guidelines 14
3.2.2 Thermal Design Guidelines 16
3.2.3 Power Supply PCB layout Guidelines 17
4 ANTENNA 18
4.1 GSM Antenna Requirements 18
4.2 GSM Antenna - PCB line Guidelines 19
4.3 GSM Antenna - installation Guidelines 20
5 SERIAL PORTS 20
5.1 MODEM SERIAL PORT 20
5.2 MODEM SERIAL PORT 2 (DEBUG) 22
5.3 RS232 level translation 23
5.4 5V UART level translation 25