Simrad PI DEPTH - MANUAL 2, Instruction Manual

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Configuration
Table 1 Default communication channels and update rates (cont’d.)
Sensor Com.channel(s) Update rate
PI Temperature 8 Fast
PI SeineSounder Depth 300M: 5
Depth 600M: 9
Depth 1000M: 1
Height: 14 Fast
Changing a communication channel
It may be required to change one or more communication
channels, and there may be many reasons for this.
• You have more than one of each sensor. For example, if you
have three temperature sensors, they MUST communicate
on three different channels.
• 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 user lower transmission frequencies.
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.
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