Digi SM-500MK4 DP - 10. APPENDIX; 10.1 Block Diagram

SM500MK4 Service Manual
52
PC (9 PIN) TO LCU 401
(FOR PC to LCU 401 communication)
9 Pin D-Sub (Female) 25 Pin D-Sub (Male)
Pin Signal Signal Pin
1 CD CD 8
2 RXD RXD 3
3 TXD TXD 2
4 DTR DTR 20
5 GND GND 7
6 DSR DSR 6
7 RTS RTS 4
8 CTS CTS 5
9 CI CI 22
PC (25 PIN) TO LCU 401
(For PC to LCU 401 communication)
25 Pin D-Sub (Female) 25 Pin D-Sub (Male)
Pin Signal Signal Pin
2 TXD TXD 2
3 RXD RXD 3
4 RTS RTS 4
5 CTS CTS 5
6 DSR DSR 6
7 GND GND 7
8 CD CD 8
20 DTR DTR 20
22 CI CI 22
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