Simrad PI44 C, Руководство оператора

Страница: 283 / 322

Sensor test procedures
271
850-165085 / Rev.B
Lower the two
sensors as shown,
and make sure that
the Spread sensor’s
head points towards
the vessel’s
hydrophone (C).
Also, make sure that
there is a free line of
sight for the
transverse
communication (D).
5 On the PI numeric display, verify that the reading is +++.
- This signifes that there is no communication between
the Spread and Remote sensors.
6 Lower the Remote sensor (B) over the opposite side of the
vessel with its head pointing in the same direction as the
Spread sensor. Lower it to the same depth as the Spread
sensor, and ensure that there is a free line of sight for the
transverse communication (D).
- If both sensors are suspended under the vessel at its
widest point, the physical distance between the Spread
and Remote sensors is equivalent to the vessel’s
maximum beam.
7 Observe the PI numeric display. The reading should be the
same as the physical distance (without any compensation)
between the two sensors.
Note:
Should any problems arise during this procedure, check that the
type (1 or 2), communication channel and update rate have been
configured for both sensors.
8 Switch on the vessel’s echo sounders and other
hydroacoustical equipment used during normal fishing
operations.
9 Switch the PI44 interference filter on and off, and observe
the numeric display. If the interference symbol is not
shown when the filter is off, leave the interference filter
switched off to increase the system’s range and
performance.