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VA-8xl - Controlling the VA-8xl 11
6 Controlling the VA-8xl
You can control a single VA-8xl unit (see Section 6.1) or configure up to a 120
channel balanced stereo audio amplifier, using 15 units via RS-485 or RS-232
(see Section
6.3).
6.1 Controlling a Single VA-8xl Unit
To connect and control a single VA-8xl unit, connect the following to the rear
panel:
• PC or other controller, see Section
6.2: “Preparing the RS-232
Port on a Single Unit”
• Set the DIP-switches, see Section
6.2.1
• Power cord
6.2 Preparing the RS-232 Port on a Single Unit
You can connect to the unit via a crossed RS-232 connection, using for example,
a PC. A crossed cable or null-modem is required as shown in method A and B
respectively. If a shielded cable is used, connect the shield to pin 5.
Method A (
Figure 7)—Connect the RS-232 9-pin D-sub port on the unit via a
crossed cable (only pin 2 to pin 3, pin 3 to pin 2, and pin 5 to pin 5 need be
connected) to the RS-232 9-pin D-sub port on the PC.
Note: There is no need to connect any other pins.
Figure 7: Crossed Cable RS-232 Connection
Hardware flow control is not required for this unit. In the rare case where a
controller requires hardware flow control, short pin 1 to 7 and 8, and pin 4 to 6 on
the controller side.
1
2
6
3
7
4
8
5
9
1
2
6
3
7
4
8
5
9
PC