Ecler MIMO4040CDN, Руководство пользователя

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The connection cables can be up to 500 meters approximately, using a minimum cross-
section of 0,5 mm
2
.
Consult your ECLER distributor or at www.ecler.com about the serial remote-control wall
panels WPa series and other accessories available for connection to REMOTE / VCA
ports.
5.9. Remote control GPO ports
MIMO4040CDN has on its rear panel 8 relay outputs NO / NC (normally open / normally
closed). Each of these outputs can have its status change associated with a trip by means
of a specific function programmed through EclerNet Manager, such as a calendar event
or the pressing of a key available on a UCP control panel. In this way, it is possible to
interact with external equipment, such as motors for projection screens or movable
partition walls, lights, sirens, GPI inputs from other equipment, etc.
6. OBSERVATIONS
7.1. Ground loops
It must be ensured at all times that the signal sources that reach the matrix, as well as all
the devices that are connected to its output, do not have the grounds interconnected, that
is to say that the gounds never reach them by two or more different paths, since, in this
way, buzzes could be produced that would even interfere with the quality of the sound
reproduction.
The shields of the cables, if they are connected to a chassis, must never be connected to
each other. This way we avoid the formation of ground loops.
7.2. Background noise
MIMO4040CDN has been designed to obtain the lowest possible background noise.
Regardless of the electronic design, the background noise will depend directly on the
correct use and installation of the unit.
It is not the same, for example, to have the GAIN control of a channel at 2 and the VOL of
the output to which it is routed at maximum (case 1), to have a correct gain setting on the
input signal and the VOL level of the output channels to which it is routed at an
intermediate position (case 2). In the first case, the signal that reaches the mix amplifier,
which intrinsically has its own background noise level, is weak, so the signal-to-noise