AVM AVM RS232, Manual

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13
AVM RS232 Master Manual – Getting
Started
AVM RS232 Master Manual – Getting
Started
3.0 Connecting the Control PC to the AVM
The connection between the AVM matrix mixer and your control PC is made with a “null modem” cable
with a DB-9 connector on the matrix end as shown below. The wiring diagram for a null modem cable is
at the bottom of the page. The drawing you use will depend on the connector on your PC. Most PCs
have either a DB-9 or a DB-25 on the serial port. The cable wiring for both connectors are shown.
Note: Some devices require that Clear to Send and Ready to send (pins 7 and 8) be tied together.
Before you can program your AVM matrix mixer, you need to have a personal computer (desktop or
laptop) capable of running the AVM program. Your computer must meet these requirements:
√
PC computer with a CD ROM drive
√
Windows ‘95® or Windows ‘98®
√
Serial port connected to RS232 connector on Matrix Mixer
√
a null modem cable (included – RS232CBL-10)
2
3
5
2
3
5
Matrix
female DB-
9
Controller
DB-9
RS232 DB-9 to DB-9 connections for
a null modem cable.
RS-232 DB-9 to DB-25 connections
for a null modem cable.
Controller
DB-25
2
3
5
2
3
7
Matrix
female DB-
9
The connections of the
AVM’s DB-9 connector
for RS-232 communica-
tion.
Ground
Receive
Transmit
2 3 5