NAL Research Corporation (TN2014-001-V1.4.5)
32
Figure 29 shows the average power consumption by the 9602-LP during SBD transmission on for the
entire voltage range.
All the plots above show that the 9602-LP is more efficient (consumes less power) when operates in the
3.6VDC to 5.3VDC input range especially in between reports. It should be noted that the actual current profiles
may vary for a number of reasons and users are again reminded to optimize their setup to attain the lowest
possible power consumption. Some of the setup parameters to be carefully observed include:
1.
Have a clear view of the sky for both the GPS and Iridium antennas—poor visibility of the sky is when
a clear line-of-sight is not available between the 9602-LP and the satellites.
2.
Keep the Iridium antenna’s VSWR low—the higher the antenna VSWR the higher the current consumed
by the 9602-LP.
3.
Keep the antenna cables’ loss to less than 3dB—the higher the antenna cable loss the higher the
current consumed by the 9602-LP.
4.
Select active GPS antennas with low-power consumption LNAs—a GPS antenna LNA with 30dB gain
is sufficient.
5.
Keep the power cable between the 9602-LP and the power source as short as possible.
10.0 LIST OF KNOWN ISSUES
a. Waking from motion with ^CAL0 may not cause a report to be sent
0
5
10
15
20
25
30
35
Voltage (DC)
0.0
0.5
1.0
1.5
2.0
P
o
we
r
C
o
n
s
u
m
p
ti
o
n
(
W
)
Figure 29.
Average Power Consumption during SBD Transmission with 3.5VDC to 32VDC Input.
Voltage (DC)
Powe
r C
onsump
ti
on (
W
)
