Comtech EF Data SMS-451 - Manual (Page 28)

SMS-451 Satellite Switch Revision 0
Installation MN/SMS451.IOM
2-2
2.2 System Installation
2.2.1 SMS-451A Installation
Install the switch as follows:
1. Mount the switch in a 19-inch (48 cm) rack with four screws between the two
modems.
Notes:
1. Refer to Chapter 1 for a block diagram with ESC-450 framing units.
2. Refer to Figure 2-1 for the interconnect diagram of a system with
EB-450 buffers.
J15
J10
J12 RX DATA FAULT CA/0813-8
CA/0813-8
J9 J8
SWITCH J14
FAULT
B
FAULT
A
CA/2590
SDM-450
SMS-451A
CA/0813-8 J6
J1
J3 TX DATA
J21
J19
J20
J4
J7
J2
RX IF
TX CLOCK
RX RF
CLK
CA/0813-8
CP2
A
J12
CP3
RX
DATA
RX
SAT
J9
EXT
75 OHM - BNC
50 OHM - BNC
TX RF 50 OHM - BNC
75 OHM - BNC
CP1
ALM J4
CP4
TX
DATA
TX
SAT
J5
75 OHM BNC
*
J18
J11
J13
TX IF
TX RF
50 OHM - BNC
75 OHM - BNC
CP1
SWITCH J14
CA/2590
J7 RX
TERR
SDM-450
RX RF
BUFFER
B CP2
TX
TERR
EB-450-2
J6
75 OHM - BNC
50 OHM - BNC
BUFFER
CLK
J12
TX
TERR
J14
EB-450-2
RX
SAT
J9
CP3
RX
DATA
EXT
CA/0813-8
FAULT
ALM J4
J9 RX
TERR
TX
SAT
J5
CP4
TX
DATA
75 OHM BNC
*
CA/0813-8
Figure 2-1. Interconnect Diagram with EB-450 Buffers