Although the unit incorporates a mute circuit for each individual output, it is recommended to turn the unit on before turning on other items such as power amplifiers or auto amplifiers to avoid transients. The shutdown process is the reverse, turning off the amplifiers first and the processor last.
Keep as much as possible the rule: Amplifiers are the last to turn on and the first to turn off.
In some installations, in particular those with unattended elements connected to data networks, the device will always be left on and therefore the power switch will only be used for maintenance operations. The unit has been designed to be continuously connected to the mains and switched on.
The following are the elements that make up the Rear Panel of your MAP device listed one by one:
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6.1. – Input Connectors
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6.2. – Output Connectors
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6.3. – Remote Control
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6.6. – 10/100 Ethernet Connection
The audio outputs on the MAP processor are electronically balanced and the connection is made using 3-pin Phoenix® connectors. The connection is made using the connector supplied with the device that uses a 2 mm flat screw fixing system.
The terminal layout is described in the diagram, seen from the outside of the equipment.
When unbalanced signals are connected, the live will be brought to the (+) terminal and the ground connection will be brought simultaneously to the (-) and ground 0V terminals using a single connecting cable between the 0V terminal and the (-) terminal. If this union is not made, the signal will suffer a significant loss of level.
The output impedance is 100 ohm nominal.
The audio inputs on the MAP processor are electronically balanced and the connection is made via 3-pin Phoenix® connectors. The connection is made using the connector supplied with the device that uses a 2 mm flat screw fixing system.
The terminal layout is described in the diagram, seen from the outside of the equipment.
When unbalanced signals are connected, the live will be brought to the (+) terminal and the ground connection will be brought simultaneously to the (-) and ground 0V terminals using a single connecting cable between the 0V terminal and the (-) terminal.
In some installations -as long as the input signals are balanced- that present noise due to ground loops, the 0V terminal of the MAP can be left unconnected, "on air". However, the MAP's design largely prevents mass loops from producing undesirable noise.
The input impedance is 4K ohm.
CAUTION: -PHANTOM POWER- Please carefully check the (-input configuration-) input panel settings for -Phantom- power as standard devices such as CD, DVD or mp3 players do not support this power and they can be damaged. Check the front panel indicators for inputs that have -Phantom- enabled. The -Phantom- power supply is mainly used to power certain professional condenser-type microphones or for injection boxes among other uses.
This RJ-11 6/6 connector allows you to connect up to 32 Altair REM-2 remote control units. This connector provides power as well as a balanced data line in RS485 format under a proprietary command software.
All remote controls must be wired in parallel pin to pin and the circuit distribution can be done in star connection where all the different branches leave the unit or by means of a chain connection, that is, from one continuous remote to the next.
The chain assembly is the most efficient in terms of cabling cost but makes it difficult to locate faults as well as network modifications. The most common is to carry out a mixed assembly. The maximum recommended cable length is 1200 meters.
The pinout from left to right is VCC, DATA+, GND, VCC, DATA-, and GND. The VCC and GND connections are repeated to reduce losses and for redundancy.
The maximum power supply capacity is 500 mA and it is protected against short circuits.
NOTE: See more detailed information in 10. REM-2 (Remote Controls).