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DX810 – 11
Using the DIRECT OUTPUTS
The DIRECT OUTPUTS provide an unbalanced
line-level signal from each of the 8 Input channels.
This signal comes from the output of the preamplifier
stage on each input channel, prior to the A/D
converter and subsequent digital signal processing.
Use the DIRECT OUTPUTS to connect a
continuous music source (e.g., satellite feed,
prerecorded background music, or multi-disc CD
player). This may connect to a telephone system
music-on-hold input. It may provide a feed to a
multi-track recorder (for recording), or a mixing
console (for additional zone coverage).
Using OUTPUTS A Through J
These outputs provide a balanced line-level
signal. Connect these outputs to the inputs of a
power amplifier.
Using the RECORD Output
The A and B output signals are provided at the
RECORD output jacks, which are industry standard
unbalanced RCA connectors. Connect these to the
Tape Input jacks on a tape deck or other recording
device to record the mix at the A and B outputs.
Using the REMOTE Controls
Connect one or up to nine remote controls to the
REMOTE BUS connection. Each remote control has
an 8-position DIP switch that must be set to a
unique ID. When the DX810 is first turned on, it
polls the REMOTE BUS and identifies the remote
controls connected to it by each unique ID.
There are two remote control versions available:
DX-SW4 Selection Remote (4-Button/4-LED)
This remote device is designed to select
functions such as preset selection, mute, and force-
on/off. Each of the four buttons controls a single
function and its associated LED displays the current
state of the function.
Refer to Appendix C for a list of the predefined
functions available for the Selection Remote Control.
DX-RVC Level Remote (2-Button/12-LED)
This remote device can control a level,
preselected via the 8-position DIP switch, and
display the selected level on the LED meter. The
predefined functions include Input 1A-8J level,
OUTPUT A through J, and Group 1-32 level. Note
that the remote control indicates the gain setting of
the channel, and not the signal level in real time.
Refer to Appendix D for a list of the predefined
functions available for the Level Remote Control.
Connecting One or More Remote Controls
The remote control devices are connected to the
DX810 using a 3-wire half-duplex interface with +24
VDC phantom power. The REMOTE BUS
connection can provide power for up to nine
remotes. Provision is made to connect local power to
the remote controls if required in certain applications.
The maximum distance between the DX810 and
the remotes depends on the type of cable selected
and type of remote controls used. Generally, with
22 gauge wire (at 0.014 Ω/ft. and 34 pF/ft), one
remote can be up to 3000 feet away. Five remotes can
be up to 2500 feet away, and eight remotes can be up
to 500 feet away. This is to prevent transmission
losses from becoming a factor. (See the instructions
with the remote control for more information).
Using the LOGIC I/O
The DX810 has 10 programmable general-
purpose logic inputs, 10 programmable general-
purpose logic outputs, and one preconfigured logic
output (System OK). The inputs are active low with
internal pull-up resistors. The outputs are active low
open-collectors with internal pull-up resistors. With
the inputs or outputs unconnected or inactive, the
logic voltage level is high (+5 V). The active state is
defined as voltage low (0 V or ground).