Wheatstone TV-80, Technical Manual

Page: 42 / 120

S T E R E O L I N E I N P U T
page 2 – 18
TV80 / Sep 98
Input Module Control Port
The SI-80 input module has one DB-9 CONTROL port mounted at the
bottom of the module’s rear panel.
Control functions are input specific; that is, programming jumpers
on the module’s switch PCB (SISW-80) activate them for Lines 1 thru
Line 4.
EXAMPLE: A logic enable jumper for L2 has been installed (but not one
for L1). When L2 is selected at the top of the module, and the module’s Chan-
nel ON switch is pressed, then control functions will take place for any source
machine hooked up to the Control DB-9 connector. However, if L1 is
preselected and the channel is turned ON, nothing will take place at the source
machine wired to the control connector.
Generally speaking, input port control jumpers (zero ohm resistors) are
already installed at the factory as required by client specifications, However,
should you wish to install your own, see jumpers J4 thru J7, Technical Draw-
ings “Stereo Line Switch Card” load sheet (page 18, center right) and schematic
(page 17, D3). Input ports are enabled as follows: Line 1: J7, Line 2: J6, Line 3:
J5, Line 4: J4.
To START & STOP a Remote Source Machine Using the Module’s
Channel ON Switch:
Machine START – The remote source machine’s external on pins are
wired to the console input module’s DB-9 CONTROL connector pins 2
(START) and 1 (MACHINE COMMON). Whenever the module’s chan-
nel ON switch is activated, the remote machine will start playing.
Machine STOP – The remote source machine’s external off pins are
wired to the console input module’s DB-9 CONTROL connector pins 3
(STOP) and 1 (MACHINE COMMON). Whenever the module’s channel
ON switch is deactivated, the remote machine will stop playing.
EFS ON/OFF – This control function is designed to run European type
source machines (as opposed to the American MACHINE START/STOP
functions called out above). When the module is on, a constant closure
occurs between DB-9 pins 4 (EFS ON/OFF) and 1 (MACHINE COM-
MON).
An External Source Machine Turns the Module ON & OFF
REMOTE ON – Activates the module’s CHANNEL ON switch. A
momentary closure between pins 6 and 7 will latch the module ON. (Can
be activated by external source machine control pulses.)
REMOTE OFF – De-activates the module’s CHANNEL ON switch.
A momentary closure between pins 6 and 9 will latch the module OFF.
(Can be activated by external source machine control pulses.)
Ready LED
The module’s fader panel has a green ready LED next to the channel
ON switch. This LED can be powered by an external source machine to
indicate when that machine is cued up and ready for play. The LED hookup
pins are 8 (+) and 5 (–) [5VDC nominal].
The DB-9 CONTROL
connector is mounted at
the bottom of the
module’s rear panel.
Refer to the pinout dia-
grams on page 2-21 in
conjunction with the text
of this section.
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CONTROL