JRC JMA-9923-7XA - Page 272

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Adjustment
of NSK
Unit to
Gyro
Compass
and
Log
The NSK
Unit of
the
radar
equipment
is of
solid-state
type
and designed
to be
compatible
with
almost all
types of
gyro
compass
by switch
operalion
(For
the step
motor type, 35
V
DC to
100 V DC, and
for the synchrony-motor
type, the
primary
excitation
voltage
is 50 V
AC to
115
VAC). Before
power-on
operation,
the switches 51, 52,
56 and
57 on
the
NSK Unit
(CMJ-462A/B)
shall be
set to the
type
of
gyro
compass in
use
in accordance
with
the
procedures
as
described below
The
gyro
select
switch
on
the NSK Unit
is set to
the
gyralion
ratio
of
360X and to
be compatible
with
the synchrony type
before delivery
from
factory. Check
the type of
the
gyro
compass used
in own ship and
make
settings in the
procedures
below.
For further details,
refer to Fig. 127 Setting
Table of
Gyro Compass
and
Gyro
Select
Switches
of
Display
Unil,
Type
NCD4263.
O
Set
the switches
and
jumper
of the
NSK Unit
(CMJ462A/B)
before
tuning on
the radar
equipment.
a
a
55:
Set
it to
[OFF].
36,
7: Set
this
switch assembly according
to the
particular
type of
gyro.
36,
37.
l'UPl''
Step signal
rDOWNl...'.
Synchronysignal
S1-1
to
4: Set this
switch
assembly
according
to the
particular
type
of
gyro.
S1-1
'''
Set this switch assembly
according
to the
particular
type
of
gyro.
luPl
'.
Step signal
rDOWNl
"
"'
Synchrony
signal
S1-2,3'
Gyration
ratio
Gyration
ratio
s1-2
s1-3
36x
ON
ON
90x
OFF ON
180
x
ON OFF
360
x
OFF OFF
Gyration
direction
IONI
"
Reverse
(counterclockwise)
I'OFFI
.
Normal
(clockwise)
51-5-8:
Set this
switch
assembly
according
to the
particular
type of
log.
S1-5"'
Log tYPe-1
fONl
"
Synchrony
signal
|OFFJ'
Pulse signal
51-6...
Log type-2
|ONJ..
1-axis
IOFFJ'
2-axis
844