Revision C • 1/04
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2-14
2 Installation
digital
logic are wired directly to an input module’s con-
nectors. This is typically how mics are wired even
when the console is connected to a VistaMax sys-
tem since the active input mic audio can be made
available as a VistaMax source—allowing the mic
audio to be routed to another console or other des-
tination in the VistaMax system.
VistaMax Mic Connections
When a studio, voice-over booth, or other ex-
ternal location will be shared by multiple control
rooms, then the shared mics should be routed
through the VistaMax system. This then allows
each BMX
digital console to independently con-
trol the mics (just as if they were directly connected
to the console) via the VistaMax system.
The shared mics and their mic panels are wired
directly to an Analog I/O and a Logic I/O card in
a VistaMax frame. The logic signals for the mic
panel are “bound” to the mic audio during setup.
Thus, selecting a mic as a source by any console
automatically routes both the audio and logic to
that console through its Net Card. Tally commands
from the console to the mic panel are routed
through the Net Card and the Logic I/O Card.
For additional networked audio information re-
fer to the VistaMax manual (Harris # 75-52).
Mic Logic To/From a BMXdigital Module
A mic panel connects to a Universal Input mod-
ule using the MAIN logic connector (a simplified
schematic is on page 2-13). To enable the remote
control inputs (On, Off, Cough, Talkback), pin 18
(Activate Logic Inputs) must jumper to the +5 VDC
supply (pin 6, 10, 11, or 12). The On Tally output
(pin 17) drives the LEDs in the On button and
the Off Tally (pin 16) drives the LEDs in the Off
button. The other LEDs (Cough and Talkback)
connect to +5 VDC. Switches and LEDs are
commoned to Logic Ground.
To make a custom mic panel, use SPST (single
Universal Input Module Logic and Mics
Microphone logic has three main functions: to
mute the monitor speakers in the room with a “hot”
mic; to command a hot mic warning light; and to
activate logic functions like talkback and cough.
The warning commands come from the Control
Room or Studio modules, but it is the Universal
Input modules that tell the monitor modules that
the input is a mic and where that mic is located
(control room, a studio, or an external site).
Setting a Universal input module as a mic in-
put is done by either setting DIP switch 2, 3, 4 or
5 to On on DS1 (A input) or DS3 (B input) or,
when a console is tied into a VistaMax system, by
assigning the input using its Room Code. The
Room Code is a VistaMax system function that
sets the room using a Session file setting that is
typically used when the mic is routed through the
VistaMax system.
Direct Mic Connections
Pages 2-58 and 2-59 summarize setting up a
Universal Input module as a direct microphone
input, utilizing a PRE99-1198 Mic Panel (simpli-
fied schematic shown below). This is typically how
mics in the control room or in a dedicated studio
are connected. Both the mic audio and the mic
Mic Control Panel
(Simplified Schematic
for PRE99-1197 or PRE9-1198)
AMBER (TALKBACK)
AMBER (COUGH)
AMBER (OFF)
RED (ON)
TALKBACK
COUGH
ON
OFF
8 J1 TALK TO C/R
7 J1 COUGH
6 J1 ON
5 J1 OFF
S1
S2
S4
S3
GNDD
J1: TO/FROM CONSOLE CHANNEL LOGIC
V+ SUPPLY
J1
4
ON TALLY
J1
3
OFF TALLY
J1
2
LOGIC GND J1
1
CR1 CR2
CR3 CR6
CR4 CR5
CR8 CR7
