CANOGA PERKINS 2240 Fiber Optic Modem - Manual (Page 84)

84
Canoga Perkins
4.9.5 External
The External function is used when network equipment is set for Network or
Internal Timing (see Figures 4-12 and 4-13). When connecting KG or KIV
encryptors on the Red side to a DTE device, you should install the external
strapped header in the J3 position. In this application, the modems are acting as an
extension of the Red side cable in a true tail circuit. The modem at the Red end is
set for external clock and the modem at the DTE end is set for slave clock. This
header is provided with the interface.
Figure 4-13.
External
Programmable
Buffered Interface,
Model P53
Figure 4-12.
External
Programmable Buff-
ered Interface, Model
P53, DCE RS-530
KG Swing
Jumpers
Internal
Clock From
Modem
Rx Data
Tx Clock
Tx Data
Modem
Alarm
From
Fiber
To
Fiber
Delay
Line
Inverter
FIFO
Data Out Data In
Shift Out Shift I n
W19
W20
8
SG
FG
CTS
DSR
RTS
FIFO
Clock
SCTE
TxD xD
From Modem
To Modem
To Modem
10
3
16
17
9
15
12
5
12
19
13
14
16
17
18
3
4
9
6
1
2
11
10
15
7
8
20
23
24
11
2
14
LL
RL
SCT
RLSD
RxD
SCR
IN
OUT
J1
(DB
- 2
5)
7
1
5
13
22
19
18
21
6
4
P/N 6100030-001
Wire Wrap
3-6
4-9
5-16
7-17
8-18
12-19
Net List
CANOGA PERKINS
Data
Rx Tx
Clock
Rate mode
Pwr Loop
On Rem/Loc
2270
Fiber
Modem
Optics
TX RX
Off
CANOGA PERKINS
Data
Rx Tx
Clock
Rate mode
Pwr Loop
On Rem/Loc
2270
Fiber
Modem
Optics
TX RX
Off
MM or SM
Fiber Optics
KG/KIV
RED BLK
DTE
P/N 6100030-001