User's Manual

LZT 123 1836 7
5.17.1 EMBEDDED APPLICATIONS................................................................................. 70
5.18 KEYBOARD SIGNALS (KEYROW, KEYCOL)................................................................72
5.19 ANALOGUE TO DIGITAL CONVERTERS (ADIN1, ADIN2, ADIN3, ADIN4) ...................72
5.20 BURST TRANSMISSION (TX_ON)............................................................................. 74
5.21 REAL TIME CLOCK ................................................................................................74
5.21.1 REAL TIME CLOCK BACKUP SUPPLY (VRTC).........................................................75
5.21.2 RTC ALARM (ALARM)......................................................................................... 76
5.21.2.1 ALARM OUTPUT FROM THE MODULE.............................................................. 76
5.21.3 ALARM UTILIZATION AS A WAKE-UP.................................................................. 77
5.22 RINGER OUTPUT (BUZZER) [TO BE IMPLEMENTED IN A FUTURE RELEASE].............................. 78
6 Antenna Connector ............................................................................... 79
7 Hints for Integrating the Wireless Modem ............................................. 80
7.1 SAFETY ADVICE AND PRECAUTIONS ......................................................................... 80
7.1.1 GENERAL .......................................................................................................... 80
7.2 SIM CARD ................................................................................................................ 81
7.3 ANTENNA ................................................................................................................ 81
7.4 INSTALLATION OF THE WIRELESS MODEM.................................................................82
7.4.1 WHERE TO INSTALL THE WIRELESS MODEM ........................................................82
7.4.1.1 ENVIRONMENTAL CONDITIONS...................................................................... 82
7.4.1.2 SIGNAL STRENGTH ........................................................................................83
7.4.1.3 CONNECTION OF COMPONENTS TO WIRELESS MODEM...................................83
7.4.1.4 NETWORK AND SUBSCRIPTION.......................................................................83
7.4.2 HOW TO INSTALL THE WIRELESS MODEM ........................................................... 84
7.4.2.1 POWER SUPPLY ..............................................................................................84
7.4.2.2 GROUNDS......................................................................................................84
7.4.2.3 AUDIO........................................................................................................... 84
7.4.2.4 SOFTWARE UPGRADE .....................................................................................85
7.5 ANTENNA ................................................................................................................ 85
7.5.1 GENERAL .......................................................................................................... 85
7.5.2 ANTENNA TYPE................................................................................................. 85
7.5.3 ANTENNA PLACEMENT ......................................................................................86
7.5.4 THE ANTENNA CABLE........................................................................................86