Elproma Elektronika Sp. z o.o.
ul. Szymanowskiego 13
05-092 Łomianki k/Warszawy
E-mail:
Tel. +48 (22) 751 76 80
www.teleorigin.com
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11.3. External antenna
The external antenna is connected to the modem via SMA connector.
Antenna must have parameters as shown below in table.
Antenna frequency range
Dual-band GSM 900/DCS 1800 MHz
Impedance
50 Ω
DC impedance
0 Ω
Gain
0 dBi w/o cable; 2dBi w/ cable
VSWR (with cable)
-10 dB
The antenna chosen for working with modem should best fit to circumstances of
environment it is used in. When the modem is placed in a room or somewhere where the
range of networks signal is too low, the outdoor or specific indoor antenna should be used
to increase it.
11.4. Environmental characteristic
Table below gives the environmental operating conditions of RB865io terminal.
Attention!
Exceeding the values may result in permanent damage to the module.
Parameter
Conditions
Min
Max
Unit
Ambient Operating
Temperature
-20
60
°C
Storage Temperature
-40
85
°C
ESD
At antenna connector
Contact
Air
At interface connector
± 6
± 15
± 1
KV
