Wheatstone TV-80, Technical Manual

Page: 35 / 120

M O N O M I C / L I N E I N P U T
page 2 – 11
TV80 / Sep 98
LED VU ladder
The input module’s mono LED VU meter signal may be pro-
grammed pre or post fader via a PCB-mounted slide switch (“SW13”)
on the module’s fader panel main PCB. See Technical Drawings “FPI-
80” load sheet (page 41, extreme left) and schematic (page 38, B-7).
The default setting is “pre”, which allows the meter to act as a “signal
present” indicator.
AUX Sends
Aux sends may be programmed to follow the module’s channel ON
switch regardless of their individual front panel pre/post fader switch
settings (this is the default setting). This is accomplished by PCB-
mounted slide switch (SW 22) on the module’s switchcard PCB. See
Technical Drawings “SISW-80 Switch Card Load Sheet” (page 18,
center right) and schematic (page 16, A-4).
Mute Follow Connector
The module’s MUTE FOLLOW DB-9 connector, located at the top
of the rear panel, is used to transmit muting and tally control signals
between the module proper and it’s optional preselector panel in the
console’s overbridge. It is wired pin-for-pin to a matching connector
mounted behind each preselector, on the rear face of the console
meterbridge.
Actual preselector mute/tally programming is done through PCB-
mounted dipswitches (eight; one for each source) on each preselector
panel switchcard. See Technical Drawings, “SB-1000 Smart Button”
schematic (page 126) and load sheet (page 127).
Input Module Audio Wiring
All audio wiring for the mono mic/line input module is via a single
DB-25 connector (I/O “A”) mounted on the module’s rear panel.
Audio signals include mic and line inputs, insert point wiring, and
direct out. See drawing on next page for detailed pinouts.
Printed Circuit Board Load Sheets
Load sheet drawings, showing all part locations, are in the Techni-
cal Drawings booklet (see contents on page 2-2 for specific drawing
locations).
Schematics
Schematic drawings are also in the Technical Drawings booklet
(see contents on page 2-2 for specific drawing locations).
The module’s DB-25
connector (A) handles all
audio input/output signals.
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