Simrad PI HBU, Instruction Manual

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Simrad PI HBU
PI HBU (HYDROPHONE BOOSTER UNIT)
The
PI HBU (Hydrophone Booster Unit)
is a small and compact
unit providing amplification for the weak signals from the PI
hydrophone. It is connected between the hydrophone and the PI
cabinet. The
PI HBU
is powered by a separate power supply.
Prerequisites for use
In order to use the
PI HBU
your PI receiver must operate with
the following software version:
•
PI32
: Not applicable
•
PI44
: DSP (Digital Signal Processor) version 1.11 (or later)
with MMI version 0.50 (or later).
•
PI54
: DSP (Digital Signal Processor) version 1.11 (or later)
with MMI version 0.50 (or later).
Why use the PI HBU
On the PI44 and PI54 systems, software release 1.08 provided an
increased range capability. By using the PI HBU (Hydrophone
Booster Unit) as well the systems will offer additional range,
and they will be more tolerant for noise. On PI32 systems, the
PI HBU (Hydrophone Booster Unit) will also provide increased
range capability.
Why not use the PI HBU
For the majority of PI users experiencing adequate performance,
and with no need to increase the range capability, the PI HBU
(Hydrophone Booster Unit) will not be required.
When to use the PI HBU
The PI HBU (Hydrophone Booster Unit) is recommended if
the reception of the PI system is cluttered with noise from
interference, or with noise from other acoustic systems on the
vessel, such as sonars, echo sounders or logs. The PI HBU
(Hydrophone Booster Unit) may also prove useful if you
experience noise from the vessel propellers.
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