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DATA-LINC GROUPp
LCM100 User’s Guide
Appendix C
System Block Diagram
Data Terminal
Equipment
RS-232C
Interface
DB-25P
Connectors
w/Cable
Pin 2
LCM100-2
Data Communications
Equipment
RS-232C
Interface
DB-25P
Connectors
w/Cable
Pin 2
Data
Out
Data
In
LCM100-1
Data
In
Data
Out
Frequency
Modulator
Lowband
Oscillator
Carrier
Detect
Circuit
Lowband
Receiver/
Demodulator
AC Power
Lines
Highband
Receiver/
Demodulator
Highband
Oscillator
Frequency
Modulator
Pin 3
Data
Out
Pin 7
Signal Ground
Carrier
Detect
Circuit
Pin 8
Pin 3
Data
In
Data
Out
Carrier
Detect
Output
Pin 7
Signal Ground
PN 161-09998-001A
9