3-4
CHAPTER 3 Setup and Test
HydroChart 3500 Sonar System Operations and Maintenance Manual
P/N 11210087, Rev. 03
To install the Sonar Head Unit:
1.
Align the bolt hole patterns and secure the mounting flange to the pipe flange
using 3/8-16 stainless steel bolts. Be sure to maintain the long axis of the
Sonar Head Unit parallel to the keel at all times. However, offsets can be
corrected with a patch test as described in “Bathymetric System Calibration
and Patch Test” on page 3-11.
NOTE
When mounting the Sonar Head Unit, it is important to ensure that it
is mounted correctly in the fore/aft direction. It should be oriented such that
the arrow on the mounting flange points toward the bow as shown in
Figure 3-3:
Arrow Label on the Sonar Head Unit Mounting Flange Should Point
toward the Bow
WARNING
In all of the remaining steps, be sure that the power is turned
off and the TIU power cable is disconnected from the power source. Failure
to follow this practice may result in personal injury or damage to the Sonar
Head Unit or to the TIU electronics, or to both.
BOW
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