User's Manual

Help Hot Line (U.S. only): 1-800-530-9960 A-9
D-620616-0-20 Rev E CONFIDENTIAL
A.6 DB-9 to DB-9 Null Modem Cable
Use a DB-9 female to DB-9 female null modem cable to connect the craft person’s
PC/Laptop to the RS-232 port on the front of the Fusion Wideband Hub for IP
address configuration. Table A-2 lists the cable pinout and Figure A-3 shows a dia-
gram of its wiring.
Figure A-3 DB-9 Female to DB-9 Female Null Modem Cable Diagram
Table A-2 DB-9 Female to DB-9 Female Null Modem Cable Pinout
From Signal To Signal
P1-4 DTR P2-6, P2-1 DSR, DCD
P1-6 DSR P1-1, P2-4 DCD, DTR
P1-3 TXD P2-2 RXD
P1-2 RXD P2-3 TXD
P1-5 GND P2-5 GND
P1-7 RTS P2-8 CTS
P1-8 CTS P2-7 RTS
P1-9 N/C N/C N/C
Note that for each DB-9 connector, pins 1 and 6 are tied together and sent to pin 4
of the opposite connector, providing the required handshake signals.
DB-9
Connector
Pin
DB-9
Connector
Pin
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9