Operation Manual

Simrad PI54
112
850-165186 / Rev.B
Note: Note that charging sensors at sub-zero temperatures can create
explosive gasses. Simrad AS assumes no liability for the
improper charging of sensors or the use of chargers not
specified in Simrad sensor charging documentation.
Bottom Contact presentation
On the PI54 display, the Bottom Contact sensor status is
displayed with graphic symbols. Note that the timers count the
total number of minutes the sensor has lost contact with bottom.
If only predicted timer values exist, the characters are shown in
grey. If the sensor communication is lost, the graphic symbol is
replaced by the characters ***.* (in grey).
(A) = Sensor set up as sensor no.2.
(B) = Sensor in contact with bottom.
The timer has stopped.
(C) = The timer counts how many
minutes the sensor has been “lifted
off” the bottom. It must be reset
manually.
(D) = Indicator, lit for every sensor
interrogation.
(E) = Interference symbol.
(F) = Sensor set up as sensor no.3.
(G) = Sensor has lost contact with
bottom. The timer starts. An audible
alarm may be enabled.
(H) = The timer shows how many
minutes the net has “lifted off”
during a tow.
Sensor configuration
On delivery, all Bottom Contact sensors are configured in
Channel 6 and with Normal update rate.
Note: The sensor and the PI54 system setup must correspond,
otherwise the communication will not work.
To change the sensor setup (channel selection, update rate etc),
use the PI Configurator utility.
The sensor update rate controls how often the sensor monitors
whether t he gear is on of off the bottom. Three settings are
available. Note that a faster update rate will decrease the battery
life.
Fast (~3,2 sec): Recommended for new trawl or gear , or
changes in rigging to monitor instabilities i n ground gear bottom
contact.