Comtech EF Data RSU-503 - Manual (Page 55)

RSU-503L Option RSU-503 Redundancy Switch Unit
A–2 Rev. 8
A.1 Description
Refer to Figure A-2 for an interconnection block diagram of the RSU-503L in a typical
earth station application.
Using WR229 (C-band) or WR75 (Ku-band) waveguide, the RSU-503L routes the RF
outputs from both RFTs directly to a waveguide switch on the antenna plate.
In addition to the RSU-503 functions, the RSU-503L provides command pulses for the
external uplink waveguide switch (28V).
A.2 Assemblies
The RSU-503L consists of the following assemblies:
Assembly EFData Part #
Top Assembly PL/3000-1
Cable Harness PL/3001-1
Chassis Base FP/3802
Panel Divider FP/3139
M&C Assembly, RSU-503L PL/3002
M&C Firmware, RSU-503L FW/3080-1
T X / I F
R X / I F
C A / 3 0 0 5
R F T - X X X
# A
A S / 2 5 7 8
T N C
T N C T X / R F
R X / R F C A / 1 5 3 0
W A V E G U I D E
A S / 3 0 0 0 - 1 J 4
C A / 3 0 0 3
M & C - R S 2 3 2
A
A
2 6
J 1 J 2
C A / 3 0 0 5
R X / I F T X / I F
A
T N C T N C
J 1 4
J 1 5
T X / I F
7 0 M H z
I N P U T
R X / I F
T N C
S 1
1
3
2
4
1
3
6
IND
P 1 9
M & C
W A V E G U ID E
S W I T C H S 3
3
1
4
2
6
6
L N A
# A
I N P U T
WG T O N
A D A P T E R
1 9 J 1 0
L N A
T E S T
1 2
WG
A S / 3 0 0 2
4 6
P 2 1
P 2 0
S 2
2
J 1 6
7 0 M H z
O U T P U T
R S 2 3 2
R E M O T E
C O N T R O L
T N C
J 5 J 1 2 J 6
S T A N D B Y
T X / I F
T E S T
I N P U T
T N C T N C T N C
T X / I F
B
C / A 3 0 0 5
J 1 3 J 8
R F / I F
B
S T A N D B Y
R F / I F
T E S T
O U T P U T
T N C
2 6
C A / 3 0 0 3
M & C - R S 2 3 2
B
R S U - 5 0 3 L
L N A
# B
R E D U N D A N T S W IT C H P L A T E
L N A
W A V E G U ID E
S W IT C H
W A V E G U ID E
C A / 1 5 3 0
T X / R F
R X / R F
R F T - X X X
# B
A S / 2 5 7 8
T N C
T N C
R F / I F
T X / I F
S H O W N W I T H " B " O N L I N E
LOW LOSS REDUNDANCY SWITCH UNIT
TO ANTENNA
FROM ANTENNA
N
N
CA/3951
UPLINK
IND
IND
Figure A-2. RSU-503L Low Loss Block Diagram