Figure 1-2. system block diagram – Comtech EF Data SMS-451 User 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
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- CiM-25/8000 (186 pages)
- CiM-25 (26 pages)
- CRS-500 (218 pages)
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