User guide

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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.
8.2 Electrical characteristics
8.2.1 Power supply
Table: Electrical characteristics
Note: once the power supply is connected, the modem is permanently consuming.
The following table describes the consequences of over-voltage or insufficient voltage on the modem.
Table: Effects of a power supply defect
The following table shows the modem consumptions without the USB connected.
Table: Power supply consumption without USB (1*)
(1*) The consumptions may vary by 5% depending on the temperature range (-25 °C to +60 °C).
(2*) Idle mode = modem registered on network but not in communication.
Power supply range
- 5.5V to 32V DC (GSM or DCS or GPRS)
Average consumption
- GSM 850/900 MHz : 195mA @ 12V in communication
- GSM 1800/1900 MHz : 160mA @ 12V in communication
- 3G / 3G+ : 295mA @ 12V in communication
Then :
▪ Voltage falls below 5.5V ▪ The GSM communication is not guaranteed.
▪ Voltage above 32V
( Punctual peaks )
▪ The modem guarantees its own protection.
▪ Voltage above 32V
( Continuous over-voltage )
▪ The modem is protected by the fuse
(The modem is short-circuited by an internal varistor).
GSM/GPRS/EDGE Bandes UMTS Bandes
CONDITIONS T=25°C
I Nom.(mA) I Max.(mA) I Nom.(mA) I Max.(mA)
Idle mode (2*) @ 5,5V 43 47 39 43
@ 12V 19 21 17 19
@ 24V 10 11 9 10
@ 32V 8 9 7 8
CONDITIONS T=25°C I Nom.(mA) I Max.(mA) I Bursts Max.(mA)
In GSM/GPRS / EDGE @ 5,5V 176 442 2 063
communication @ 12V 81 195 945
@ 24V 41 100 488
@ 32V 32 76 373
In UMTS @ 5,5V 342 638 825
communication @ 12V 158 295 378
@ 24V 81 151 195
@ 32V 62 115 149