9
6 REAR PANEL DESCRIPTION
6.1 INPUT CONNECTIONS
The MAP Audio Processor balanced input signals are carried out through the 3 pin Phoenix ®
type Terminal Blocks. Input signal must be connected to the included terminal plugs and operated by
using a small 2 mm flat blade screwdriver. Signal arrangement is depicted on the next drawing as
seen from the rear panel.
For unbalanced signals connect the signal to the (+) connection and connect the ground wire to both the
(-) and ground 0V connections. A stripped wire can be used for linking the ground to the (-) terminal.
When using balanced signal, the ground terminal 0V could be left unterminated to solve some
unexpected ground loops from the input side devices. Moreover, the design of the MAP series makes very
unlikely the presence of such a loops.
Input impedance is 4K ohm.
CAUTION.
PHANTOM POWER
Check carefully the setting of the
phantom power
because standard devices as
CD players, etc. does not manage it and could be damaged. Check front panel
+48V
led indicator. Phantom
power is used for some professional microphones an ancillary audio equipment.
6.2 OUTPUT CONNECTIONS
The MAP Audio Processor floating balanced output signals are carried out through the 3 pin
Phoenix ® type Terminal Blocks. Output signal lines must be connected to the included terminal plugs
and operated by using a small 2 mm flat blade screwdriver. Signal arrangement is depicted on the
next drawing as seen from the rear panel.
For unbalanced output connection, use the (+) connection and ground making a link from the (-) terminal
to the ground by using a stripped wire. An important signal loss can be found when not following this rule.
Output impedance i
s 100
nom
inal
.
6.3 REMOTE CONTROL
This RJ-11 6/6 connector allows Altair remote controls to be connected here. The connector
includes power and data for up to 32 remote units.
All the remote controls are connected in parallel and the network can be done in either daisy
chain for the simplest way, star or a combination depending on the installation or additional
considerations. Maximum wire network length is 1200 meter.
See the REM-2 instruction manual for more information.
6.4 GENERAL PURPOSE logic INPUT/OUTPUTS (GPIO's).
The MAP-128/1216 includes six general purpose logic inputs and four general purpose
logic outputs allowing remote control from/to auxiliary equipment to/from the MAP processor.
These GPIO´s employs standard connectors (3.5 pitch) Phoenix ™ type.
Both inputs/outputs share the power (+) positive and ground reference.
The inputs are logical, with an internal pull-up of 5 Volts and 100 Kohm, and therefore the simplest
assembly is a simple switch to ground. Assemblies can also be connected to an open collector output from
an ancillary equipment.
SWITCHES TO GROUND OPEN COLLECTOR
MATRIX AUDIO PROCESSOR MAP128 /MAP1216