VISSONIC Electronics Limited www.vissonic.com
3.3
VIS-VLI701A Front Panel
①
POWER OUTPUT
Switch for the power of the radiated signal.
②
LOOP-THROUGH INPUTS
Connected to the system controller's SINGNAL
OUTPUTS interface or the former IR radiating panel's
output interface.
③
DELAY COMPENSATION*25
Delay composition adjusting button, “+” is to
delay increase, “-“ is to delay decrease. The value for
adjusting will be displayed on the LCD above the
button.
Delay composition range: 00~99, that is, from 0
（
0*25
）
ns to 2475ns
（
99*25
）
Cable delay coefficient:5.6ns/m
，
please refer
to the cable’s specifications for details.
3.6 “settings of the delay button”
④
Power input interface: AC100V~240V
50Hz/60Hz input
3.4
How to allocation the system
3.4.1
The installation of the radiator
The IR can reach the receiver by direct reflection
or diffused reflection. In a conference hall, the
delegates who sit behind others will not receiver IR
signal if it has been screened by the front row of seats,
which has to be taken into consideration when
allocating the radiator. Thus, when the radiator should
be installed as high as possible, and generally the
height should be more than 2.5m and the radiator
should face the whole conference hall from various
directions to make sure their radiating area can cover
the whole place.
If the radiator are installed highly enough, the
signal intensity of the received IR signal will not
decreased to zero in the shadow area, because IR can
be reflected (same as the visible light).
Digital IR Language Distribution System User Manual
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