Operation Manual

Simrad PI54
146
850-165186 / Rev.B
• Slow (~34 sec): Recommended to monitoring a stable
situation over time, focus on door not falling over, broken
sweep lines etc. during the tow. The system will be more
sensitive to bad communication conditions due to slow data
update. This mode provides longest operational battery life
before charging.
System configuration
Sensor configuration: The sensor must be configured with a
unique sensor number. Select channel number and update rate
according to the sensor’s configuration. Write down the
configuration for future reference.
Status & Receiver: The Interference filter must be switched on.
Set it to level 9 if you have noise problems from other
hydroacoustic sources. Note t hat with the filter on, it will
influence the signal spectrum shown in the Status display.
Sensor filter: Switch this filter to Light. Set it to Heavy only if
you experience excessive noise. Position Off will provide raw
data and fastest possible response.
Mounting
The Spread and Remote sensors must be mounted in special
adapters on each trawl door. These adapters must be installed
aforehand. Detailed information on how to install the adapters
are provided with the installation kit.
Installation principle
The P I Spread sensor is mounted on the port door, while the PI
Remote sensor is mounted on the starboard door. It is essential
that there is a clear line of sight between the two transverse
communication “eyes” (one on each sensor), and between the
top of the PI Spread sensor and the hydrophone on the vessel.