User Manual
Table Of Contents
- INTRODUCTION
- SECURITY
- TECHNICAL DATA
- GSM/GPRS APPLICATION INTERFACE
- HARDWARE INTERFACES
- GENERAL GUIDELINES FOR THE USE OF THE TANGO55/56
- HOUSING
- APPENDIX
- HOW TO UPDATE THE NEW FIRMWARE INTO THE TANGO55/56 MODEMS
- RF EXPOSURES
TANGO55/I & TANGO56/I VERSION 1.03
Figure 4: Audio interface pin-out (interface C)
Pin Description Direction
1 Power output 10V ± 5% 150mA OUT
2 TxD ↔ Transmitted Data IN
3 RxD ↔ Received Data OUT
4 Ground -
5 SPK+ OUT
6 SPK- OUT
7 MIC+ IN
8 MIC- IN
Table 11: Pin assignment of RJ45
4.1.4 Interface D (antenna interface)
There are two TANGO55/56 versions as far as the antenna interface is concerned.
The specifications and functions of the modems are the same. The difference
between both equipments can be recognised by looking at the GSM antenna on
the left side of the modems: the first one provides an antenna with SMB connector
interface (Figure 5.a); the second one provides an antenna with FME connector
interface (Figure 5.b). The length of antenna cable integrated on the TANGO55/i
and TANGO56/i is 23.3 cm.
Figure 5.a: TANGO55/56 modem with SMB
antenna connector
Figure 5.b: TANGO55/56 modem with FME
antenna connector
4.1.5 Interface E (SIM interface)
The SIM interface controls a 3V SIM Card. This interface is fully compliant with GSM
11.11 recommendations concerning SIM functions.
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