ELPRO TPA110 SERIES, Инструкция по установке и эксплуатации

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5.0 VIDEO AND AUDIO SIGNAL EQUALIZATION
The CAT5 cable introduces considerable losses on the signal in transit.
A 100-meter long AWG26 CAT5 cable attenuates 50% of the color components
of the video signal. As the composite video signal is a complex signal that does
not accept downgrading, for each installation calibration must be performed in
order to offset cable losses. The unit that makes this compensation is the
receiving unit, in our case the TPA110 R / IRR.
WARNING
The TP110R / IRR unit is precompensated for 50 mt of CAT5 cable
However, use of a cable with a length of less than 50mt
does not affect system functioning.
The maximum lengths of the CAT5 cable that can be compensated are:
-375mt. for cable type AWG26
-500mt. for cable type AWG24
-650mt. for cable type AWG22
For monitoring and signal present type applications, sections of up to 900mt of
AWG22 CAT5 cable can be used.
In critical noise conditions, in order it improve the all-round performance of the
system, the
CAT6 cable can be used.
The CAT6 cable has the same characteristics as the CAT 5 but features
improved insulation between the internal pairs.
Losses are compensated using the VIDEO EQ MEDIUM LONG trimmers.
Where MEDIUM and LONG refer to the length of the CAT5 cable.
The MEDIUM trimmer is used to compensate sections of cable up to half the
maximum length indicated above. For compensation of longer cable sections,
the MEDIUM trimmer is set to maximum (completely clockwise) and the LONG
trimmer is adjusted.
To calibrate the system, proceed as follows, separately for the 2 video signals:
5.1 Using a generator, send a standard video signal, for example the bars at
75% or CCIR17 line, to the input of the TPA110 T / IRT transmitter unit.
TPA110
series
CAT5/6 VIDEO, AUDIO & IR TRANSCEIVERS
ELPRO Video Labs s.r.l.
Via della Praia 4/a FERRIERA di BUTTIGLIERA ALTA (TO) – ITALY
Tel.+39 0119348778 - FAX +39 0119348779
9 16