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Operating Manual - VCX-80 Master VCA/Limiter, RD-8 and RW-8 Remote Controller
of the three pin connections are shorted or opened, the VCX-80
will continue to operate without any clicks or jumps in signal
levels - the channel levels simply remain at their level settings
before the fault occurred .
The VCX-80 may also be controlled by a personal
computer or touch-panel controller via RS-232 or RS-422 .
Data input is accomplished on either the XLR jack (pin 2) or
on the DC Control Voltage Connector (pins 13 or 14) . Ashly
and third-party developers are currently working to expand
methods of control and integration of this product into exist-
ing control systems . Details will become available as such
systems are developed .
The VCX-80 may also be internally addressed to
one of 32 banks, allowing for control of up to 256 channels
from a single data line . Contact a factory Technical Service
Representative (1-800-828-6308 ext .125) for details .
7 .6 Digital Connection - RD-8
The male XLR jacks on the side and bottom of the
RD-8 are wired in parallel so that an XLR plug may be in-
serted into the side for desktop operation or into the bottom
for rack-mount operation . Pin 2 is the data output, pin 3 is
the positive DC voltage input, and pin 1 is ground . This XLR
data output may be "split" with an XLR Y-cable to feed two
VCX-80 units to give stereo 8-channel capability . Also, by
installing factory customized firmware into the device ROM,
the RD-8 slide faders can be assigned to any (or several) arbi-
trary VCX-80 channels . Contact a factory Technical Service
Representative for details .
7 .7 DC Control Voltage Connection
This DB 15-pin female connector allows for direct
DC voltage control of the internal VCA circuits, as well as the
master level control . Direct DC control of the VCX-80 meets
the remote control objectives with minimal hardware require-
ments and allows for custom "low-tech" hardware interfaces .
Two wires are used to supply positive and negative DC voltage
to ordinary 10K ohm linear-taper potentiometers, and a wire is
used to return the wiper of each control to its respective channel
(see pinout below) . Telephone wire with eleven conductors or
more is a good choice for this application, and since only DC
voltage is used, control line distance is not a major concern .
Pin 1
Channel 1 DC control input
Pin 2
Channel 2 DC control input
Pin 3
Channel 3 DC control input
Pin 4
Channel 4 DC control input
Pin 5
Channel 5 DC control input
Pin 6
Channel 6 DC control input
Pin 7
Channel 7 DC control input
Pin 8
Channel 8 DC control input
Pin 9
Master DC control input
Pin 10 +15VDC - Connect to pot CCW
Pin 11 (Ground for data input)
Pin 12 -4VDC - Connect to pot CW
Pin 13 (Digital data input - same as XLR pin 2)
Pin 14 (Digital data input - same as XLR pin 2)
7
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