Optimus UP120M4 Manual page 14

UP120M4 AMPLIFIER
(9) PRIORITY CONTROL TERMINAL BLOCK
These contacts allow the activation of the amplifier priority, facilitating the installation wiring.
The block diagram shows an example of installation with four zones. Each zone is connected to
one section with different functions; (See figure 5).
SECTION 1. The zones selector activates the priority (zone 1). The audio signal is given by
micro 1.
SECTION 2. The zones selector activates the priority (zone 2). The audio signal comes from
microphone 1 trough the priority out of section 3.
SECTION 3. The priority contact and audio signal are directly connected to microphone 2.
SECTION 4. The priority contact is activated by the zones selector (zone 4). The audio signal
comes from micro 2 from the priority output of the section 3.
Fig. 5
(10) PRIORITY CHANNELS & (11) PROGRAM
CHANNELS.
The two input channels (PROGRAM & PRIORITY) from
each amplifier use 4 RJ45 type connectors in parallel 2
to 2.
This way, they can provide signal to other power units
(see figure 6).
For the connection, you must use STP Cat 5 cable,
which main feature is that it has a very low impedance,
which allows to have an exceptionally flat frequency
response even for long distances, and to comply with the
CMRR & Crosstalk features required for the analogical
audio systems.
Fig. 6
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UP120M4