Changing The Update Rate - Simrad PI GEOMETRY - REV B Instruction Manual

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• Other vessels near your use the same PI catch monitoring
system (or a similar), and they have one or more of their
sensors set up to the same communication channels as you
have. This will create interference, as you will "read" each
others sensors.
• If your sensors are set up to use communication channels too
close to each other (for example, you have chosen channels 4,
5 and 6), this will limit the vessel's speed. The reason for this
is the Doppler effect. If the speed is too high, the Doppler will
cause the transmission frequencies to change so much that
they overlap, and this will create interference. The PI catch
monitoring system will provide a warning if this is about to
happen! You must then either change to other communication
channels further apart, or reduce the maximum shooting speed.
• If you operate at the maximum range of the sensors, you
may be able to increase this range slightly if you use
lower communication channels. This is because the lower
communication channels use lower transmission frequencies.
All sensors are provided from Simrad with a default
communication channel. In some cases you may find that the
chosen channel does not suit your operational needs, for example
if you have more than one sensor of any given type. This is a
decision you have to make depending on how many sensors you
use, and how many of these that are identical.

Changing the update rate

It may be required to change the update rate on a sensor, that is
how often it sends information back to the PI catch monitoring
system. A high update rate will give frequent information
updates, but the sensor will use more battery power. If you need
your batteries to last as long as possible, you must consider
lowering the update rate.
• A low update rate will provide you with fewer information
updates, but the battery will last very long.
• A high update rate will give you frequent information updates,
but the battery will run out faster.
All sensors are provided from Simrad with a default update rate
setting. In some cases you may find that this update rate does not
suit your operational needs. This is a decision you have to make
depending on the local fishing conditions.
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