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6
INSTALLATION PROCEDURE
CAUTION: Do Not Apply power to equipment until
instructed to do so.
6.1
Internal Selections
The LTC 8100, LTC 8200, and LTC 8300 Series incorporates a
printed circuit boards (PCB) that contains user selectable DIP
switches. If necessary, follow the instructions in the Cover
Removal section below to access the DIP switches. Removal of the
cover should only be performed by qualified service personnel.
NOTE: The LTC 8300 Series system has changed internally from
its original design. The instructions below describe the internal
settings of the newer "LTC 8300 Series" which contains a single
main circuit board. These instructions do not apply to the older
"LTC 8301 Series" model that contained two main circuit boards.
The LTC 8x00 Series circuit board contains the video input
termination switches S0801, S0802, S803 and S0804 (S0803 and
S0804 are only present on the LTC 8300 Series). The video
termination switches on the Allegiant must be set to the correct
position prior to installation. Read the section on Termination
Practices below prior to installing the system to determine if it is
necessary to change the video modules termination switches.
The circuit board contains two 8-position DIP Switches for
system configuration options and two lithium batteries. The DIP
Switches can be used to modify certain system operating
conditions. Review the section on Factory Default Settings to
determine if it is necessary to change the DIP switches from their
factory default positions.
The circuit board's lithium batteries require attention only when
it is necessary to change them. The batteries enable the RAM
memory to retain its contents for up to a year without the unit
being powered. Since the batteries are not used while the AC
power is on, several years of service should be expected before it
becomes necessary to change them.
6.2
Enclosure Mounting
If the bay is to be installed into a standard 19-inch EIA rack,
remove the 4 rubber bumper foot pads found on the bottom
before trying to install it. Four holes are provided for mounting
the bay in the rack.
The LTC 8300 is supplied with the rack mounting brackets
attached. The LTC 8200 and LTC 8100 are shipped with the
rack mounting brackets unattached. On these systems, the
brackets must be attached prior to installation into a rack.
If the LTC 8300 Series are not going to be rack mounted, the
enclosure's mounting brackets can be removed if desired. The
cover of the unit must be removed before access to the mounting
brackets is possible.
6.3
Cover Removal
Cover removal is necessary only if changes need to be made to the
video input termination switches, system configuration DIP
switches, or batteries.
WARNING: Removal of the cover should only be
performed by qualified service personnel—not user
serviceable. The unit should always be unplugged,
before removing the cover and remain unplugged
while the cover is removed.
6.3
Démontage du Couvercle
Le démontage du couvercle et le réglage des
commandes internes doivent être effectués par du
personnel qualifié- pas de service par l'utilisateur.
L'appareil doit toujours être débranché lorsque l'on
retire le couvercle et doit rester débranché pendant que
le couvercle est ôté.
6.3
Entfernung der Abdeckung
Die Entfernung der Abdeckung und Hantieren im
Innern des Gerätes sollten nur von qualifiziertem
Personal erfolgen. Der Stecker des Gerätes sollte immer
aus der Steckdose gezogen werden, bevor man die
Abdeckung entfernt, und nicht wieder hineingesteckt
werden, solange die Abdeckung entfernt ist.
6.3
Desensamble de la Cubierta
Atención: La cubierta ha de ser removida solo por
personal de servicio autorizado - este equipo no
contiene partes que requieran mantenimiento por
usuarios. Antes de remover la cubierta asegurarse de
que el equipamiento ha sido desconectado de la
alimentación. Esta debe permanecer desconectada
mientras la cubierta este fuera de lugar.
For the LTC 8300, the top cover is fastened to the case by 4 screws
located on the rear of the unit. For the LTC 8100 and LTC 8200
units, the top cover is fastened by 8 screws on the top and 4 screws
on each side. After the screws have been removed, the cover slides
back and off the unit. Reverse procedure to re-install.
6.3.1 Mounting Ear Removal
If the LTC 8300 Series are to be used as a desk top unit, remove
each mounting ear by removing the screw holding the mounting
ear to the enclosure chassis. Refer to the drawing below if needed.
Cover and Rack Brackets Removal
6.3.2 Video Termination Selections
The video input termination DIP switches are located towards
the rear of the circuit board. Note that the Factory Default
settings are all ON (input terminated with 75 ohms). Only those
switches associated with looping video inputs need to be changed
to OFF (unterminated).
19
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