User's Manual

Telit GE863-QUAD / GE863-PY
Hardware User guide
1vv0300697, Rev. ISSUE#0, - 21/11/05
Reproduction forbidden without Telit Communication written authorization – All Right reserved – Right of modification reserved page 2 of 70
Contents
1 OVERVIEW 5
2 HARDWARE COMMANDS 6
2.1 Turning ON the GE863-QUAD 6
2.2 Turning OFF the GE863-QUAD 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 10
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 12
3.2.1.3 Battery Source Power Supply Design Guidelines 13
3.2.1.4 Battery Charge control Circuitry Design Guidelines 13
3.2.2 Thermal Design Guidelines 15
3.2.3 Power Supply PCB layout Guidelines 16
4 ANTENNA 17
4.1 Antenna Requirements 17
4.2 Antenna PCB line Guidelines 18
4.3 Antenna installation Guidelines 19
5 SERIAL PORT 20
5.1 RS232 level translation 22
5.2 5V UART level translation 24
6 MICROPHONE 26
6.1 Microphone line Characteristic and requirements 26