Figure 1-3. Block Diagram - Comtech EF Data SDM-300A Installation And Operation Manual

Introduction
Refer to Figure 1-3 for a system block diagram.
Notes:
1. The UB-300 (UB-530 alternate part #) universal breakout panel (BOP) is an
2. When the modem is equipped with a 50-pin data I/O connector, the use of the
3. The UB-54 breakout panel (BOP) is an option for MUX only.
4. The UB-300 breakout panel (BOP) is an option for Flex Mux only.
B O P
(U B -30 0)
C U S TO M E R J8
D ATA I\O
J8
A U X 1
J9
TT L FA U LT S
FA U LT
F O R M C
J7
C O N TA C T S
A LA R M S J10
F O R M C
C O N TA C T S
J6
R E M O TE
S E R IA L
IN T E R FA C E
1–6
option for V.35, G703, EIA-232, and EIA-422.
BOP is required to interface with the customer data connector to the modem.
S D M -30 0A
S AT E L LIT E
M O D E M
D ATA
C LK
S C T
IN TE R FA C E
FA U LT
R E LAY S
A U X
C IR C U ITS
A L AR M
R ELAYS
D ATA
I/Q
S AT C L K
M &C
A G C

Figure 1-3. Block Diagram

-5
2x10 R E FE R E N C E
-7
2x1 0 R E F (O P T )
E N C O D E R /
M O D U L ATO R
50 T O 1 80 M H Z
-5 TO -30 D B M
+5 TO -20 D B M O P TIO N
P O W E R
S U P P LY
D E M O D /
D E C O D E R
1
SDM-300A Satellite Modem
IF O U T P U T
T R A N S M IT
C P 1
R F
E Q U IP M E N T
C P 3 E X T R E F
(O P T IO N )
90 T O 2 64 VA C ,
47 T O 6 3 H Z
IF IN P U T
R E C E IV E
C P 2
R F
E Q U IP M E N T
5 0 TO 18 0 M H Z
-30 TO -55 D B M
A N TE N N A
Rev. 4