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1. This radar uses the six types of standard speed log signals listed bellow.
Pulse type
Synchro type
Set gyro select switch assembly S5(⑪) using the S5 setting table.
2. Connect the speed log signal line to, for the pulse type, the [PULSE] side, or for
the synchro type, the [SYNCRO] side, of terminal block TB20 (⑦).
3. S5 (⑪): Gyro log select switch assembly
Set the switch assembly in accordance
with the S5 setting table.
It is described as
S5 setting table
1
2
3
SYNC
0
STEP
1
360X
0
0
180X
0
1
90X
1
0
36X
1
1
Rotational
Normal (NORM)
direction
Reverse (REV)
PULSE
Type
SYNCRO
800P/360X
PULSES/NM
400P/180X
200P/90X
100P/30X
[Setting Table of the Speed Log Select Switches of NCT-4106]
Setting the speed log switches
: 800 pulses/NM, 400 pulses/NM, 200 pulses/NM,
100 pulses/NM
: 360X/NM, 180X/NM, 90X/NM, 30X/NM
ON
: 1
OFF : 0
4
5
6
7
8
0
1
0
1
0
0
0
0
1
1
0
1
1
4. S6 (⑧): Log test switch
Setting this switch to the [TEST] position
displays 18KT.
Usually, set the switch to [NORML].
5. Light-emitting diode CD22 is provided to
check pulse-type log input signals. This
LED lights if the log signal level is +2V or
more (or under a non-connected status of
the log signal line), or it does not light if the
log signal level is +2V or less.
144
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