Codan NGT 2010 RF Technical & Service Manual page 840

1 2
A
B
C
Configuring the Interface Line Links
D
The interface circuits on the backplane can be set up for two or four line connections.
(The interface is set up at the factory for the appropriate number of lines, either 2-wire or
4-wire interface units).
If four lines are required, an additional dual line equalisation card (CODAN part no.
08-03905-002) can be fitted, allowing up to two more lines (refer CODAN drawing
08-05994). Unused lines should be disabled to prevent signal interference.
Refer tables 1 & 2 for correct link configurations.
The lines are disabled by a link on the interface backplane PCB assembly 08-05995, as
E
shown in the Backplane View (below).
Lines one and two can be disabled by a link fitted to connector P6.
Lines three and four (if fitted) can be disabled by a link fitted to connector P105.
Note: The card is normally set up in the factory. You will only need to alter this if you add or
remove lines.
P105
F
+ C14
2u2
4 3 2 1
C13
1OOn
4W Link 4
1a
J101
G
J1
1a
1n
P1
5V A
D3
1N4004
1N4004
1n 1n
D2 D1
1N4004
C7 C8
0V
P7
H
3 4 5
DETAIL A
TABLE 1
ENABLED
LINE 1
LINE 2
LINES 1 & 2
07-01348 -03
P103 P102
R1
4W Link 3 3k3 x 5
1a
P104 P101
J2
Line 4 Line 3
Rx Audio Bus 300 Hz Detect Bus
C104 C101
C103 C102 Tx Audio Bus
J301
1n
1a
1n 1n
C4 C5
BACKPLANE VIEW
6 7
Fitting the Line Isolation Unit
(Refer to Detail A)
1. Remove 4 screws securing top and bottom covers on the 8571 Remote Control Interface and remove the covers.
2. If converting from an existing 2W configuration to a 4W configuration, remove 2 screws securing type 8807 Line
Isolation Unit to chassis on appropriate line position. Disconnect plug connector from the backplane and withdraw unit.
3. Fit 8 pin connector on loom 08-04152 (ITEM 2) to line "X" (where X is 1 - 4) cut-out in chassis rear panel.
4. Fit 4 wire interface PCB assembly 08-03995-001 (ITEM 1) to chassis positioned according to the line being fitted
using 4 screws (ITEM 4).
5. Fit loom 08-04152 (ITEM 2) to 4 wire interface PCB assembly connector ensuring red dot on the connector aligns as
shown.
6. Fit loom 08-04153 (ITEM 3) to 4 wire interface PCB assembly & backplane PCB connector corresponding to the line
being fitted. Ensure that the red dots on the connectors align as shown.
7. Ensure line disable link(s) are in place on backplane PCB corresponding to number of lines fitted. (In accordance
with the Configuring the Interface Line Links instructions.
8. Fit top and bottom covers to 8571 Remote Control Interface and replace screws.
PARTS LIST
ITEM PART No.
1 08-03995-001 4 WIRE INTERFACE
2 08-04152 LOOM
3 08-04153 LOOM
4 31-23006-582 SCREW M3x6
5 60-00081-320 SOCKET, 8 WAY
* 6 15-10510-001 FITTING INSTRUCTIONS
* ITEM 6 IS SUPPLIED AS PART OF THE KIT AND IS NOT SHOWN.
TABLE 2
CONNECTOR P6 CONNECTOR P105
DISABLED JUMPER PINS ENABLED DISABLED
LINE 2 3-4 LINE 3 LINE 4
LINE 1 1-2 LINE 4 LINE 3
NONE 2-3 LINES 3 & 4 NONE
P6
C12 1n C10 1n
P4 C11 1n C9 1n
4 3 2 1 P3
4W Link 2 4W Link 1
P5 P2
L301
1n
Line 2 Line 1
P307
P302 P301 P305 P303
1n
P306 P304
C302 --- C314
C16
1n
100n
D4
2u2
1N4004
DIMENSIONS IN mm
8 9 10
DESCRIPTION QTY
1
1
2
1
1
1
JUMPER PINS
3-4
1-2
2-3
VERSION TABLE
15-10510-002 MASTER
15-10510-003
15-10510-004
SCALE
DATE
GC
DRN 1-11-02
MATERIAL
GSB
CHKD 12-11-02
AJC
APPD 29-4-03
TOLERANCES
UNLESS OTHERWISE STATED
FINISH
2 PLACES DEC.
REFER TO NOTES
1 PLACE DEC.
0 PLACE DEC.
11 12
Tx
Rx
FILE No.
C
CODAN LIMITED, A.C.N. 007 590 605: 2002
TITLE
OPTION 4W 8571 (NGT)
FITTING INSTRUCTIONS
DRAWING/DOC NO.
A2 15-10510-001
±0.20
ISS
±0.5
SHT. 1
±1
3
1
OF