KRAMER: SIMPLE CREATIVE TECHNOLOGY
Serial Control of the VA-8xl or VA-16xl
10
6.2 Configuring up to a 240 Channel Balanced Stereo Audio Amplifier
To connect up to 15 VA-8xl or VA-16xl units, do the following
1
:
•
Connect the balanced/unbalanced audio sources/acceptors to the rear
panel on each unit (see section
5.1)
•
Connect a PC or other controller (see section
6.2.1)
•
Set the dipswitches on each unit (see section
6.1.2)
•
Connect the power cord on each unit
Figure 8 illustrates how to configure up to 15 VA-8xl or VA-16xl units.
Figure 8: Configuring up to 15 VA-8xl or VA-16xl Units
2
6.2.1
Connecting a Control Interface on a Set of Units
To connect the control interface on a set of units, do one of the following:
•
Connect the RS-232 port on the first VA-8xl or VA-16xl unit to a PC or
other controller, and then connect the RS-232 port on each of the VA-8xl or
VA-16xl units, using the specially prepared RS-232 cable (see section
6.2.1.1); or
•
Connect a PC or other controller to the “RS-232 in” DB9F port on a Kramer
Tools VP-43xl Interface Converter and connect the RS-485 port on the VP-43xl
to the RS-485 ports on each of the VA-8xl or VA-16xl units (see section
6.2.1.2)
1 Switch OFF the power on each device before connecting it to a VA-8xl or VA-16xl unit. After connecting all the VA-8xl or
VA-16xl units, switch on their power and then switch on the power on each device that connects to them. Switching on each
VA-8xl or VA-16xl unit, recalls the previous setup of each channel from the non-volatile memory. After changing a
setting(s), it can take up to 30 seconds before these settings are saved
2 See Figure 9 for details of how to interconnect the RS-232 ports
