ModemUSB
User’ Manual v2.1.1.19
7
2.3.
Electrical and operating specifications
Modem is supplied from +5V USB interface. The device does not need any external
power supply at all! The PC to which is the “ModemUSB” modem connected must have a USB
interface, corresponding to USB 1.1 or USB 2.0 standards.
Notice: The USB connection must support high power mode, which allows the device to use a
currency up to 500 mA from the connection.
Electrical parameters of the device are shown in the Table 1.
Table 1. Electrical parameters of the device
Parameter
Min
Typical
Max
Meas. Units
Power Supply Voltage
+4.5
+5V
+5.5V
V
Average Power
consumption
-
360
500
mA
Operating conditions and other parameters are shown in Table 2.
Table 2. Operating conditions and the like.
Parameter
Min.
Typical
Max
Meas. Units
Weight
90 ± 10
g
Recommended
operating temperature
+15
+35
ºC
Marginal operating
temperature
-25
+55
ºC
Storage temperature
-40
+85
ºC
Notice: if the settings outreach the characteristics given above the device can be damaged!
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