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The "Alternate" mode is required if asynchronous data has
gaps between characters that are not equal to a multiple of a bit
time, or if 1-1/2 stop bits are used.
LOW PASS FILTER
MODEM
RX AUDIO
U3C
SAMPLE SWITCH
RUS
Figure C-1. MDS 9600 bps Modem Block Diagram
P8
Figure C-2. 9600 bps Modem Assembly Diagram
MDS 05-2415A01, Rev. A
NOTE
DATA
SLICER
U8
U3B
U9
U3A
SAMPLE AMP.
U3D
10 V
REGULATOR
+ 13V IN
U7
RE
CLOSED
U6
P/N: 03-1833A01
SYNC-ASYNC
PROM
CONVERTOR
U5
U4
DATA PROCESSOR
U6
S1
OPTION SELECT
SWITCHES
+ 10V
5 V
REGULATOR
U8
POWER
REGULATORS &
CONTROL
S1
CONFIGURATION
8
1
OPEN
U5
APPENDIX C
RS-232
INTERFACE
TC
U7
RC
ETC
RXD
TXD
DCD
PTT
TAE
TX
AUDIO OUT
+ 5V
P6
C-3
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