Network Hardware User Manual
UC864-E Hardware User Guide
1vv0300766a Rev.1 - 31/01/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 3 of 51
Contents
1 Overview ........................................................................................................................... 6
2 Mechanical Dimensions ................................................................................................... 7
3 UC864-E module connections ......................................................................................... 8
3.1 PIN-OUT ................................................................................................................................... 8
3.1.1 UC864-E Antenna connector ..........................................................................................................11
4 Hardware Commands .................................................................................................... 12
4.1 Turning ON the UC864-E ...................................................................................................... 12
4.2 Turning OFF the UC864-E .................................................................................................... 14
4.2.1 Hardware shutdown ........................................................................................................................14
4.2.2 Hardware Unconditional Restart .....................................................................................................15
5 Power Supply ................................................................................................................. 17
5.1 Power Supply Requirements ............................................................................................... 17
5.2 General Design Rules .......................................................................................................... 19
5.2.1 Electrical Design Guidelines ...........................................................................................................19
5.2.1.1 + 5V input Source Power Supply Design Guidelines .................................................................19
5.2.1.2 + 12V input Source Power Supply Design Guidelines ...............................................................20
5.2.1.3 Battery Source Power Supply Design Guidelines ......................................................................22
5.2.1.4 Battery Charge control Circuitry Design Guidelines ...................................................................22
5.2.2 Thermal Design Guidelines ............................................................................................................24
5.2.3 Power Supply PCB layout Guidelines ............................................................................................25
6 Antenna ........................................................................................................................... 26
6.1 Antenna Requirements ........................................................................................................ 26
6.2 Antenna - Installation Guidelines ........................................................................................ 27
7 Logic level specifications .............................................................................................. 28
7.1 Reset signal .......................................................................................................................... 29
8 Serial Ports ..................................................................................................................... 30
8.1 MODEM SERIAL PORT ......................................................................................................... 30
8.2 RS232 level translation ........................................................................................................ 32
5V UART level translation ............................................................................................................... 35
9 USB Port ......................................................................................................................... 37
9.1 Communication ports combinations .................................................................................. 37
10 Audio Section Overview ................................................................................................ 38
10.1 Generality .............................................................................................................................. 38
10.2 Definitions ............................................................................................................................. 38