TANGO55/i & TANGO56/i User's Manual
Version 1.05
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)
As far as the antenna interface is concerned, there are two TANGO55i versions. 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 TANGO55i is 23.3 cm.
Figure 5.a:
TANGO55i/56i modem with SMB antenna
connector
Figure 5.b:
TANGO55i 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.
Figure 6:
SIM interface (interface E)
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