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Canoga Perkins
4.9.3 External Station
The External Station is used when an external station clock is providing timing (see
Figures 4-8 and 4-9). When connecting KG or KIV encryptors together on the
Black side, using an external timing device you should install the external station
clock strapped header in the J3 position. In this application, the modems are acting
as the network, although the timing input is from an outside source. The modem in
which the timing source is connected should be set for external and the other modem
set for slave. This header is provided with the interface.
Station
Clock
KG/KIV
RED
BLK
Clock
Rem/Loc
Rate mode
82
Typical External Station Clock Application
CANOGA
MM or SM
PERKINS
Data
Off
Loop
Pwr
Optics
2270
Fiber Optics
Fiber
Modem
On
TX
Rx
Tx
RX
P/N 6100030-004
KG Swing
Jumpers
Data Out
W19
8
Shift Out
W20
RLSD
10
5
12
3
19
16
RxD
17
13
9
SCR
15
14
SCT
12
20
16
FIFO
Clock
23
24
17
SCTE
11
2
18
TxD xD
14
7
SG
P/N 6100030-004
1
FG
5
CTS
13
6
From Modem
DSR
22
4
To Modem
RTS
19
18
LL
To Modem
21
RL
Off
Loop
Pwr
Clock
Rem/Loc
Rate mode
On
RX
FIFO
Modem
Data In
Alarm
Shift I
n
3
4
9
From
Rx Data
6
Fiber
1
Inverter
2
11
IN
Delay
OUT
Line
10
Internal
15
Clock From
Modem
7
Tx Clock
Fiber
Tx Data
8
Wire Wrap
Net List
3-6
4-9
5-7, 14 & 17
8-18
12-19
KG/KIV
CANOGA
PERKINS
Optics
Data
2270
BLK
Fiber
Modem
Rx
Tx
TX
To
RED
Figure 4-8.
External Station
Programmable
Buffered Interface,
Model P53,
DCE RS-530
Figure 4-9.
Programmable
Buffered Interface,
Model P53,
External Station
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