IDP-280/IDP-290 - Hardware Guide
T212, Version 03 10 © ORBCOMM Proprietary
3.2.2
Power Consumption
Typical power consumption values at VIN=12 V and at room temperature (23°C)
Table 5
Power Consumption
Mode of Operation
Current
Transmit
730 mA
Satellite communications receive
55 mA
Idle
25 mA
Sleep
20 µA
Table 6
GPS/GLONASS Power Consumption
Parameter
GPS
GLONASS
Current
30 mA @ 12 V
28 mA @ 12 V
3.2.3
Immunity to Power Supply Failure
The modem meets all specifications and does not display any corrupted software or loss
of essential data after being subjected to three 60 s power supply failures per IEC 60945,
section 10.8.
3.2.4
Fast Transient Immunity
The IDP-290 operates normally after being exposed to fast transients per IEC 60945,
section 10.5.
3.2.5
Load Dump Circuitry
The modem's power supply input voltage range is 9 to 32 V. Above this range the load
dump protection circuitry disconnects external power so that the modem is not damaged,
up to 150 V. When the input voltage drops below the threshold, the modem recovers,
going through power on reset.
With this protection, the modem is capable of withstanding load dumps as specified in
SAE J1455 (rev Jun 2006) paragraph 4.13.2.2.1.
3.2.6
Fuse
The modem has an internal 5 A fuse that provides protection in the event of an internal
short on the modem. The internal fuse cannot be reset and is not field repairable.
3.2.7
Inrush Current
Inrush current transients occur when the modem is:
First powered on.
Preparing for transmit. This is when the modem switches its internal voltage rail
to a higher voltage for transmitting.
Modem starts to transmit. This is when the modem's power amplifier is turned
on.
