EG_GenPro78e_1003_UG_007_UK
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Description 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
8.2.1 Power supply
Table: Voltage range and power consumptions
Operating voltage range
5.5V to 32V DC (GSM or DCS or GPRS)
Average power consumptions
- GSM 900 MHz : 90mA @ 12V in communication
- GSM 1800 MHz : 80mA @ 12V in communication
- Idle mode : 12mA @ 12V
Note : The modem is permanently powered once the power supply is connected.
The table below indicates the consequences of over and under-voltage on the modem.
Table: Effects of a power supply defect
If the voltage :
Then :
falls bellow 5.5V
GSM and GPS communications cannot be
guaranteed.
goes above 32V
(transient peaks)
The modem guarantees its own protection.
goes above 32V
(continuous over-voltage)
The modem is short-circuited by an internal varistor.
The modem is then protected by the in-line fuse.
The table below indicates the power supply consumption of the modem without the RS232 connected.
Table: Consumption (1*) without RS232 connected
CONDITIONS
E-GSM/GPRS 900MHz
E-GSM/GPRS 1800MHz
T=25°C and 3V SIM card
I Nom.(mA)
I Nom.(mA)
Idle mode (2*)
@ 5,5V
17,5
17,5
@
12V
12
12
@
24V
11
11
@
32V
8,5
8,5
In communication GSM
@ 5,5V
180
156
1RX/1TX @
12V
90 80
@
24V
46.5
39.5
Power (2W/1W)
@ 32V
35
30
In communication GPRS CL10
@ 5,5V
329
275
3RX/2TX @
12V
167 140
@
24V
86.5
72.5
Power (2W/1W)
@ 32V
65
54
During TX bursts
@ 5,5V
1250
1000
@
12V
630
506
@
24V
318
252.5
Power (2W/1W)
@ 32V
246
197
(1*) The power consumption may vary by 5% over the whole operating temperature range (-20 °C to +60 °C)
(2*) Idle mode: modem is registered on the network but not in communication.
