9602-LP User Guide Version A
Document Number: 451-92750-001A
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shows the average power consumption by the 9602-LP during SBD transmission
on for the entire voltage range.
Figure 36: Average Power Consumption During SBD Transmission (3.5 VDC to 32
VDC Input)
All the plots above show that the 9602-LP is more efficient (consumes less power) when it
operates in the 3.6 VDC to 5.3 VDC input range, especially in between reports. The actual
current profiles may vary for a number of reasons; optimize your setup to attain the lowest
possible power consumption.
Some setup parameters to be carefully observed include:
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.
Keep the Iridium antenna’s VSWR low—the higher the antenna VSWR, the higher
the current consumed by the 9602-LP.
Keep the antenna cables’ loss to less than 3 dB—the higher the antenna cable loss,
the higher the current consumed by the 9602-LP.
Select active GPS antennas with low-power consumption LNAs—a GPS antenna LNA
with 30 dB gain is sufficient.
Keep the power cable between the 9602-LP and the power source as short as
possible.
