STEPPII-55/56-LT H
ARDWARE
DESCRIPTION
V
ERSION
1.01
4.1.1 Power consumption
Test conditions:
All measurements have been performed at T
amb
= 25 °C, V
IN+
= 12 VDC and 24
VDC.
Average current at +12 V DC
GPS/GSM on
(Operating with firmware
1.6.2)
850
1800/1900 MHz
GSM band
105
105
mA
in idle mode (base station sends at -85 dBm)
197
153
mA
in transmit mode at power level 7/3
219
178
mA
in transmit mode at power level 5/0 (maximum)
GPS/GPRS on
(Operating with firmware
2.X.XX)
To be defined
mA
in receive mode at maximum power level 5 (3 x
downstream +2 x upstream using Coding Scheme 4
(CS-4))
Table 2:
Power supply and current consumption at 12 V DC
Average current at +24 V DC
GPS/GSM on
(Operating with firmware
1.6.2)
850
1800/1900 MHz
GSM band
75
75
mA
in idle mode (base station sends at -85 dBm)
111
93
mA
in transmit mode at power level 7/3
119
103
mA
in transmit mode at power level 5/0 (maximum)
GPS/GPRS on
(Operating with firmware
2.X.XX)
To be defined
mA
in receive mode at maximum power level 5 (3 x
downstream +2 x upstream using Coding Scheme 4
(CS-4))
Table 3:
Power supply and current consumption at 24 V DC.
4.1.2 Operating temperatures
Parameter
Min
Typ
Max
Unit
Ambient temperature (according to GSM 11.10)
0
25
+55
°C
Charging temperature
0
25
+40
°C
Discharging temperature
0
25
+55
°C
Table 4:
Operating temperature
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.
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