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
