User's Manual

SBS
-
900 Shore
Ba
Ba
sed
Radar Systems
Chapter
10
10
:
Corrective maintenance
KH
KH
-
1602 2
issue 1
:
Standard SBS900 Systems Operator & Maintenance Handbook
Page
131
of
240
Encoder
removal
The
azimuth encoder
can be removed
as follows:
a)
a)
Fully isolate the
entire system from all
sources of AC power
b)
b)
Unplug the
a
zimuth
e
ncoder flying lead from
the housing cable form (located in the top of
the housing).
c)
c)
Noting the position and order of w
ashers,
u
nscrew
, remove and retain
the
two pillars
(
A
)
that hole mounting bracket
from the base
of
the rotating joint.
d)
d)
Slacken the two M3 (1.5mm hex key) grub
screws securing the azimuth encoder to the
gearbox and carefully remove the azimuth
encoder, ensu
ring the cable is not damaged.
Example of G
TX
TX
A188
Noting the position and order of washers, unscrew, remove and retain
the
four
cross head bolts
(
B
)
that retain the supporting bracket to the encoder.
Encoder r
eplacement
To replace the azimuth encoder, reverse the removal procedure shown above.
The encoder must never be hammered into position.
Using a hammer to fit the encoder can damage the
device.
Heading Marker Note
There is no heading orientation mark on the encoder. When a replacement
encoder is fitted the heading line must be configured/ adjusted in the
setup
menu of the radar
distribution unit.
GTX
A188 encoder and waveguide
Detail of encoder mounting
DTX
A3
A3
-
AXZX & DTX A3
A3
-
BXZX
Power & signal
connection
G
TX
TX
A188
encoder
A
B