Specifications

XT65/XT75 Hardware Interface Description
Contents
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XT65_XT75_HD_v01.001 Page 5 of 133 2007-1-8
Confidential / Released
4.2 GPS-GSM Interface ...................................................................................................................... 77
4.3 Software Control............................................................................................................................ 78
4.4 Power Saving ................................................................................................................................ 78
5 GSM Antenna Interface ......................................................................................................................... 79
5.1 Antenna Installation....................................................................................................................... 79
5.2 Antenna Pad.................................................................................................................................. 80
5.2.1 Suitable Cable Types..................................................................................................... 81
5.3 Antenna Connector ....................................................................................................................... 82
6 GPS Antenna Interface.......................................................................................................................... 86
6.1 Antenna Installation....................................................................................................................... 86
6.2 GPS Antenna ................................................................................................................................ 87
7 Electrical, Reliability and Radio Characteristics ................................................................................ 89
7.1 Absolute Maximum Ratings........................................................................................................... 89
7.2 Operating Temperatures ............................................................................................................... 90
7.3 Storage Conditions........................................................................................................................ 91
7.4 Reliability Characteristics .............................................................................................................. 92
7.5 Pin Assignment and Signal Description ........................................................................................93
7.6 Power Supply for Active GPS Antenna ....................................................................................... 101
7.7 Power Supply Ratings................................................................................................................. 102
7.8 Electrical Characteristics of the Voiceband Part ......................................................................... 105
7.8.1 Setting Audio Parameters by AT Commands .............................................................. 105
7.8.2 Audio Programming Mode ........................................................................................... 106
7.8.3 Characteristics of Audio Modes................................................................................... 107
7.8.4 Voiceband Receive Path ............................................................................................. 108
7.8.5 Voiceband Transmit Path ............................................................................................ 110
7.9 Air Interface................................................................................................................................. 111
7.10 Electrostatic Discharge................................................................................................................ 112
8 Mechanics ............................................................................................................................................ 113
8.1 Mechanical Dimensions of XT65/XT75 ....................................................................................... 113
8.2 Mounting XT65/XT75 to the Application Platform ....................................................................... 115
8.3 Board-to-Board Application Connector........................................................................................ 116
9 Sample Application ............................................................................................................................. 120
10 Reference Approval............................................................................................................................. 122
10.1 Reference Equipment for Type Approval .................................................................................... 122
10.2 Compliance with FCC Rules and Regulations ............................................................................ 123
11 Appendix .............................................................................................................................................. 124
11.1 List of Parts and Accessories...................................................................................................... 124
11.2 Fasteners and Fixings for Electronic Equipment......................................................................... 126
11.2.1 Fasteners from German Supplier ETTINGER GmbH.................................................. 126
11.3 Data Sheets of Tested Batteries ................................................................................................. 129
11.4 Mounting Advice Sheet ............................................................................................................... 132