Comtech EF Data SMS-451 - Manual (Page 17)

SMS-451 Sateliite Switch Revision 0
Introduction MN/SMS451.IOM
1–3
The system block diagram (Figure 1-2) shows how the switch provides the interface
between the prime modem, the terminal, and the customer equipment.
RX DATA
J15
J10
J12
SDM-450
FAULT
CA/0813-8
CA/0813-8
SMS-451A
J9 J8
SWITCH J14
FAULT
B
FAULT
A
CA/2590
CA/0813-8 J6
J1
TX DATA J3
RX IF J20
TX CLOCK J4
REMOTE INTERFACE
CA/2674
RX RF
CLK
50 OHM - BNC
CA/0813-8
75 OHM - BNC
J11
CP2 J21
J19
J7
J2
J12
ESC
J5
J14 TX
EXT
TX RF 50 OHM - BNC
75 OHM - BNC
ESC-450
J10 J5 J13 J8
J9 J10 J12 J11
RX
DTA
RX
CLK
TX
CLK
TX
DTA
CP1
A
ALM J4
TWINAX
CABLES
J9 RX
*
TX IF
J18
J11
J13
SDM-450
TX RF
FAULT
50 OHM - BNC
75 OHM - BNC
B
CP1
SWITCH J14
TERR
UNIT
FRAMING
RX RF
CA/0737-4
J26
J27
CP2
B
ESC 2
A
ESC 2
TERR
75 OHM - BNC
50 OHM - BNC
SMS451T
BREAKOUT PANEL
B-141-1 CA/037-8
J28
J25
REMOTE
INTERFACE
J11
CLK
J12
ESC
TX
TERR
J14
EXT
CA/0813-8
CA/0737-4
CA/0813-8
ESC-450
J10 J5 J13 J8
RX
DTA
RX
CLK
TX
CLK
TX
DTA
J9 J10 J12 J11
ALM J4
CA/2590
TWINAX
CABLES
J9 RX
TERR
*
FRAMING
UNIT
Figure 1-2. System Block Diagram