Wheatstone D-8000, Техническое руководство

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page 11 – 2
D-8000 / Jan 2003
L I N E P R E S E L E C T O R M O D U L E
Line Preselector Module-
Digital
(LSD-8 Controller Panel and
LSR-500 Rackmount Unit;
optional)
Overview
This optional module consists of an 8-switch control module
(LSD-8) mounted in the D-8000 console and an associated 19-inch
rackmount switcher (LSR-500) that mounts in a remote location. All
audio input and output wiring goes to the rackmount unit, which takes
its control from the console module.
The rack unit accepts eight stereo analog and digital audio inputs
(each input is dipswitch-selectable for either analog or digital) and
outputs both an analog and digital stereo signal, which may be wired
back to D-8000 console input ports. Wiring between the console’s
LSD-8 preselector module and the rackmount switcher is via two
factory supplied pin-for-pin DB-25 connector cables: the module’s
upper DB is used for control; the lower for power.
The LSR-500 rackmount unit faceplate has eight indicator LEDs
which show which input has been selected at the console and also
ANALOG and DIGITAL LEDs which light to show what kind of
signal has been selected. A POWER LED is also included. (See
drawing next page.)
The rear of the LSR-500 has seven I/O connectors: two DB-9s
(analog and digital output) and five DB-25s (control and power to the
LSD-8 module, analog audio in (2) and digital audio in (1). In the center
of the chassis rear is a cutout that allows access to eight dipswitch
settings that determine what type of audio (analog or digital) each input
accepts. The default setting (“off”) is DIGITAL.