User manual
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Superior Broadcast
ATVCA Amplifier User Manual
Superior Boadcast ATVCA Amplier
6. Start Up
6.1 Important to Know
The amplier must laid-on rmly before its switch-on. Mechanical tension and
mobility of some parts can stress sensitive electrical connection, some of these
are tuned accurately for the working RF channel and so, their xing may be a
demanding job. User should take care about RF output connection, grip all screws
fairly and secure RF output lter and its interconnecting transmission lines.
The amplier is composed of two parts electrically interconnected by three cables
(see description section 6.2 for a more detailed information about the amplier’s
composition). User must not supply mains voltage until all interconnection between
parts of the amplier are fully inserted and locked.
The air for cooling plant must be sufciently available; temperature and humidity of
the environment also are very important variables to take account for. Reliability of
the amplier and all partnered equipments is largely dependent by environment’s
physical parameters, amplier is equipped with a complete set of protection
remedies and these remedies are essential in the acute phases but, in the long
run, aging in advance will arrive. Usually the amplier is housed inside a 19”
standard cabinet, enclosed in its turn in a working room. User should design the
overall placing in order to avoid air ow suffering and so, the adequate quantity of
air needed by the amplier.
The amplier takes its cooling air from the room where it is placed in. Cooling
air must be clean, presence of thick dust, smoke, steam, fog, small insects and
inorescence, may compromise life’s expectation of the equipments. The amplier
is equipped with grilles in the air intake, these grilles must be periodically inspected
and, in case, cleaned. Frequency of maintenance is directly subordinate to air’s
quality; a three months period is the recommended rate.
The amplier’s cooling plant maintain temperature of inside parts at an admissible
level to work. When the amplier shutdown, whether by intervention of crcuit
protection or user’s decision, cooling system does not arrest immediately, it runs for
a more time after main service stop. This operating procedure prevents temperature
rebounding, a well-known phenomenon that affects all compact equipments. We
recommend user do not break mains voltage without having put in ‘OFF’ state the
amplier and before the end
of the autonomous fan arrest time.
The amplier is provided with lots of fans. Each fan is equipped with an auto-
resettable fuse connected in series, this acts as an overload protection. Fan is
the most subject to usury component of whole equipment so, failure during the
normal life’s time expectative of the amplier is unavoidable. When a fan fails, a
related auto-resettable fuse isolates it from the common fans feeder preventing
a complete halt of the equipment. The amplier works anyhow, but the margin of
temperature balance is reduced and no indication is offered to the user. The short
period of maintenance recommended (around three months) warrants that such
an occurrence may not become an annoying trouble-shooting section.
ATVCA
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User Manual
Rev. 1.0 - 22/11/10