VEGA INSYS Modem GPRS 5.0 - Manual (Page 104)

Technical Data INSYS GPRS 5.0 serial
104
12.3 Power Supply
All specified technical data was measured with a nominal input voltage, full load,
and an ambient temperature of 25.0 °C. The threshold value tolerances are sub-
ject to typical fluctuations. A maximum of one value may be operated in the
threshold value range.
The values were determined for a GSM receiving field strength of 16. For lower
field strengths on site, the values will increase, especially for CSD or GPRS data
transmissions.
The current consumption during data transmissions may also increase if the an-
tenna is not adjusted correctly.
This can occur when:
The antenna and/or the antenna cable are not adjusted to 50 Ω impedance.
The antenna that is being used is misaligned due to the situation at the instal-
lation site (metal parts …).
To operate the INSYS GPRS 5.0 serial, a suitable device protection must be used.
Power supply: 10.0.60 V DC
Current consumption - during normal operation -:
Supply Voltage 10V 24V 36V
Field strength 26 26 26
Standby 140 mA 60 mA 42 mA
CSD Data transmission 195 mA 84 mA 60 mA
GPRS Data transmission 290 mA 84 mA 60 mA
Note: Average values during data transmission and switched-on relay
(AT**OUT1=close, AT**OUT2=close).