QPRO Technical Data Sheet
Document 1137-0901, REV A
5
sized appropriately per the expected current draw as shown Table 2-1, Input Power Current draw is
dependent on the features and options that are installed and operating. See Table 2-2, , for typical power
consumption.
2.3.2 External Power Supply Requirements
In order for the modem to boot properly:
1) The supply voltage must be below 1.4 volts for 4 seconds before re-applying the 6 to 32 V.
2) The rise time on the supply voltage must be 10ms maximum, from 0 to 6Vdc.
2.3.3 Load Dump Protection
To pass the load dump testing requirement of the J1455 specification, there must be a minimum of two 33V
diodes placed in parallel between power and ground of the input power supply. This functionality has been
built into the QPRO.
2.3.4 Typical Power Consumption
This section describes the typical power consumptions of each component of the QPRO modem. Table 1 is
a listing of the required input voltage limits and Table 2 gives a break down of the different components of
the QPRO.
Table 2-1, Input Power
Table 2-2, QPRO Power Consumption
Function
Activated
Typical
Current
@6V
(Amps)
Typical
Power
@6V
(Watts)
Typical
Current
@12V
(Amps)
Typical
Power
@12V
(Watts)
Typical
Current
@24V
(Amps)
Typical
Power
@24V
(Watts)
Typical
Current
@32V
(Amps)
Typical
Power
@32V
(Watts)
Notes
.000050
.093
.072
.00003
.558
.432
0.000025
0.045
0.035
.0003
.54
.42
0.000012
.023
.0185
.000029
.552
.444
0.000009
.017
.0145
.000029
.544
.46
ORBCOMM
TX
N/A
N/A
1.900
22.800
0.950
22.800
0.700
22.400
~3 mS
ACQ, 38
mS COM
and
800mS
RSV
Bursts
Minimum Input Voltage Requirements
Units
Volts
ORBCOMM
10.5 to
32
IRIDIUM
7.5
Processor Only
6
GSM/GPRS
6
GPS
6
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