2 Installation
digital
Revision C • 1/04
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2-15
pole, single throw) momentary contact switches
with LED or lamp indicators. Lamps must be 6.3
volt type with a current draw of under 50 mA.
Tie one side of each switch and lamp to Logic
Common (pin 1, 2 or 3 on the MAIN connector).
The other side of the Cough and Talkback lamps
are tied together to Logic Active Tally (pin 15).
Each switch is tied to its logic counterpart (the
On switch goes to the On (-) input, pin 7, the Off
switch goes to Off (-) input, pin 8, etc.). The on/off
lamps are tied to their Tally outputs (On lamp to
On Tally, pin 17; Off lamp to Off Tally, pin 16).
Tallies Common (pin 16) is jumpered to +5 VDC
(pin 6, 10, 11 or 12). Pin 18, Activate Logic In-
puts (+), is also jumpered to +5 VDC (typically
pin 6 is used).
Input Module Logic (Universal Input,
Telco/Codec, RLS) and Peripheral Devices
Peripheral devices are controlled through the
Start and Stop Command Pulses, or through the
Start Command Sustained logic, and the Com-
mands Common connections.
In the basic logic connection example on pages
2-60 and 2-61, active low logic is used, thus Com-
mands Common is connected to the logic ground
on the peripheral device (labeled Command Com-
mon on the Denon CD player in the example).
In the complex logic example shown on pages
2-62 and 2-63, active high logic is used, thus
Commands Common connects to +5 VDC.
Note:
This voltage is more typically supplied
directly by the peripheral device in order to
prevent ground loops.
Peripheral devices control the module through
the Reset and Ready logic inputs. In the example
on pages 2-60 and 2-61, only the Ready function
is used. The Ready function performs an audio
Reset, which turns off the module without gener-
ating a Stop Command Pulse. In addition, it also
controls the Off lamp illumination.
Pages 2-62 and 2-63 show an example where
Reset (+) and Ready (+) connect to +5 VDC on
the module. The Ready (-) command and the Re-
set (-) command are pulled low by the active low
logic relay outputs on the peripheral device, which
all tie to the module’s Logic Ground (pin 1).
For devices requiring a steady On signal, the
Start Command Sustained output can be used.
Additional Logic Connections
There are additional logic connections on the
Session module, Control Room module, optional
Studio module, and Output 1 module.
Three 3-pin connectors on the Session module
interface remote timers so they can be reset by the
console timer reset logic. The Session module also
has factory-installed cabling for the clock and
timer, the talkback mic, the digital meters and the
meter legend display data. For more information
on the Session module’s logic connections and set-
tings, see pages 2-32 and 2-33.
A 14-pin connector on the Control Room mod-
ule carries the logic interface for the Control Room
warning light, mute, dim and talkback. An 8-pin
connector on the Control Room module controls
the External Cue input. For more information on
the Control Room module’s logic connections and
settings, see pages 2-34 to 2-38.
The optional Studio module has two 14-pin con-
nectors to control the two studios’ logic (warning
lights, mutes, dims). The Studio module also has
two 16-pin connectors: one for the talkback au-
dio and logic for a producer, the other for talkback
audio and logic from an external site. For more
information on the Studio module’s logic connec-
tions and settings, see pages 2-40 to 2-49.
The Output 1 module includes an 8-pin con-
nector to control the producer’s talkback to each
mix-minus output. For more information on the
Output 1 module’s logic connections and settings,
see pages 2-50 to 2-53.
