EG_GenPro2xe_1003_UG_005_UK
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Descriptions and non-contractual illustrations in this document are given as an indication only.
ERCO&GENER reserves the right to make any modifications.
Dct_427_00
8.2.6.2 GSM external antenna
The GSM external antenna is connected to the modem via the SMA/M connector.
The external antenna must have the characteristics described in the table below.
Table: Characteristics of the GSM external antenna
Frequency band
850/900/1800/1900 MHz
Impedance
50 Ohms nominal
DC impedance
0 Ohm
Gain
0 dBi in a minimum direction
VSWR (Rx max TX max)
1.5:1
Polarization Linear
See chapter 10 for the GSM antennas recommended by ERCO & GENER.
8.2.7 Characteristics of the accelerometer
Table: Characteristics of the accelerometer
Dynamic
± 2g or ± 8g driven by software
Interface (internal)
SPI with the ARM
Multiple Interruption
programmable
Up-going filter
programmable
8.3 Environmental characteristics
To ensure a correct functioning of the modem, the limits listed in the table below must be respected.
Table: Environmental characteristics
Operating temperature
-20 °C à +60 °C
Storage temperature
-40 °C à +85 °C
Operating humidity without condensation
HR < 70% @ +55°C
Atmospheric pressure
normal
If the battery option is used, the environmental conditions are different. See table below.