CANOGA PERKINS 2270 Fiber Optic Modem - Manual (Page 40)

40
Canoga Perkins
3.9.3 Internal, Wire Wrap Header P/N 6100030-005
The internal function is used when network equipment is set for Eternal Timing (see Figure 3-8).
When connecting KG or KIV encryptors together on the Black side, you should install the internal
strapped header in the J3 position. In this application, the modems are acting as the network
timing source. In most cases, both modems should be set for internal master clock. The rate
switches should be set to the appropriate speed for the circuit. This header is provided with the
interface.
SG
FG
7
1
INTERNAL
PROGRAMMABLE BUFFERED INTERFACE
MODEL P53, DCE RS-530
KG SWING
JUMPERS
FIFO
DATA OUT DATA IN
SHIFT OUT SHIFT IN
5
12
19
13
14
16
17
18
Tx CLOCK
Tx DATA
3
4
9
6
1
2
11
10
15
7
8
W20
W19
8
RLSD
RxD
10
3
16
17
9
SCR
15
12
SCT
FIFO
CLOCK
20
23
24
11
2
14
SCTE
RxD
TO
FIBER
CIRCUITS
FROM
FIBER
CIRCUITS
MODEM
ALARM
Rx DATA
Rx CLOCK
INVERTER
DELAY
LINE
INTERNAL
CLOCK FROM
MODEM
6-13
7-17
9-19
10-14
11-15
8-18
IN
OUT
IN
OUT
Figure 3-8.
Internal
Programmable
Buffered Interface,
Model P53, DCE
RS-530