Data Sheet

QPRO Technical Data Sheet
Document 1137-0901, REV K 12
2.4.5 Power Calculation
Depending on the configuration of the modem, add the appropriate power. For example:
QPRO with GSM, GPS and Orbcomm with no messages being sent:
Current Calculation:
0.045A (Processor Only) + 0.032A (GSM RX) + 0.013A (GPS) + 0.035A (Orbcomm RX) = 0.125A or 12.5mA
Power Calculation:
0.544W (Processor Only) + 0.340W (GSM RX) + 0.155W (GPS) + 0.460W (Orbcomm RX) = 1.499W
Table 2-2, QPRO Power Consumption below, gives a breakdown of the different components of the QPRO.
Table 2-2, QPRO Power Consumption
Function
Activated
Typical
Current
@6V
(Amps)
Typical
Current
@12V
(Amps)
Typical
Current
@24V
(Amps)
Typical
Current
@32V
(Amps)
Typical
Power
@6 - 32V
(Watts)
Notes
PROCESSOR
ONLY
.093 .045 .023 .017 .544
Processor
Low Power
Mode
.080 .040 .020 .015 .480
UARTs and
CAN bus ON
0.035 0.018 0.009 0.004 0.128 iQ + Bus ON
UBATT
Relays ON
2.000 2.000 2.000 2.000 64.000 Maximum rating on relays
GND Relays
ON
2.000 2.000 2.000 2.000 64.000 Maximum rating on relays but
not part of system power.
External 3.
5
V
(Pins 3 and 4)
0.475 0.235 0.120 0.090 2.850 Maximum rating
GPS
0.025 0.013 0.007 0.005 0.155
GSM RX
0.065 0.032 0.015 0.008 0.340 4 Slot DL
GSM TX pwr
range
0.33-
1.35
0.160-
0.650
0.080-
0.325
0.060-
0.245
1.920-
7.840
GPRS 4 slots (Class 10)
ORBCOMM
SLEEP
.000050 0.000025 0.000012 0.000009 .000029
ORBCOMM
RX
.N/A 0.035 .0185 .0145 .46
ORBCOMM
TX
N/A 1.900 0.950 0.700 22.400 ~3 mS ACQ, 38 mS COM and
800mS RSV Bursts
IRIDIUM RX
N/A 0.085 0.042 0.031 0.992
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