Data Sheet

Q4000 Technical Data Sheet
Document 1135-0902, REV K 12
Power Calculation 2.4.5
Depending on the configuration of the modem, add the appropriate power. For example:
Q4000 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, Q4000 Power Consumption, gives a breakdown of the different components of the Q4000.
Table 2-2, Q4000 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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