Smiths Kelvin Hughes Nucleus 3 5000 Series, System Handbook

Page: 487 / 510

COM MIS SIONING
31 The Radar Interswitch Unit (NNR-A55) is fitted with a
power On/Off switch on the top of the unit.
32
There is no specific commissioning procedure
applicable to the Radar Interswitch Unit.
IN DI CA TORS
Pro ces sor PCB (NNR-A980)
33 The following LED indicators are provided on the
Processor PCB:
LED Indication
D37 +27V Present
D38 +5V Present (i.e. RIU is operating normally
and backup has not been selected)
D39 Flashes to indicate that processor is running.
D40 Flashes with Heading Line output to Display 1
D41 Flashes with Heading Line output to Display 2
D42 Flashes with Heading Line output to Display 3
D46 Flashes with Heading Line output to Display 4
D47 Flashes with Heading Line output to Display 5
D48 Flashes with Heading Line output to Display 6
Video Sync Switching PCB (NNR-A979)
34 There are no indicators provided on the Video/Sync
Switching PCB.
LINK & SWITCH SETTINGS
Pro ces sor PCB (NNR-A980)
Links
35 There are three links on the Processor PCB. The links
are normally configured as follows:
Link DESCRIPTION SETTING
LK1 Disconnects
20mHz Oscillator
Normally MADE
LK2 TX 5 Azimuth Filter Normally MADE
LK3 TX 6 Azimuth Filter Normally MADE
NOTE:
Links 2 and 3 are only removed if a 4096 pulse input is
being used.
Switches
36
There are two switches on the Processor PCB. The
switch settings are as follows:
SW1 Description Normal
Position
1 CAN terminator for Display 1/Tx1 OFF
2 CAN terminator for Display 2/Tx2 OFF
3 CAN terminator for Display 3/Tx3 OFF
4 CAN terminator for Display 4/Tx4 OFF
5 CAN terminator for Display 5/Tx 5 OFF
6 CAN terminator for Display 6/Tx 6 OFF
NOTE:
The terminator is only required when each leg is not
connected to both a display and a transceiver. E.g. In a
system comprising 3 transceivers and 2 displays; both a
display and a transceiver are connected to legs 1 and 2, but
only a transceiver is connected to leg 3. For this
configuration, the CAN terminator for Display 3/Tx 3 is set
to ON.
SW2 Description Normal
Position
1 Tx Power always ON ON
2 Spare OFF
3 OP5 slaved to Display No. LSB OFF
4
OP5 slaved to Display No.
OFF
5 OP5 slaved to Display No. MSB OFF
6 OP6 slaved to Display No. LSB OFF
7
OP6 slaved to Display No.
OFF
8 OP6 slaved to Display No. MSB OFF
NOTES:
(1) If switch SW2-1 is set to OFF, the transmitter
power will only be switched ON if a display is set to
MASTER it. Therefore, when switching control between
displays, the transmitter warm up period may be activated.
If SW2-1 is set to ON, the power to all transmitters is
switched ON when any display is switched ON.
(2) Display outputs 5 and 6 can be set to output the
radar from the transmitter selected by any of the displays.
The switches are set to the display number to be followed. If
the switches are all set to OFF, the output can be used for a
normal display.
May 01 8e.4 Original
KH 2020
Chap 8e