MRR-7 Keypad - IMR-2 Interface
5
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Maryland USA (410) 761-4000 - www.polyplanar.com
poly-planar
Waterproof Marine Audio
Configuring the IMR-2 Interface:
6) The IMR-2 interface has 2 main mini-DIN 8 pin female connectors into
which the Keypad can connect. Which one the keypad or microphone
is connected to will determine which speakers are active during
intercom use. (refer to figure 3)
a. The Zone Configuration switch [21] must be set according to
your audio system. If you have only an Audio Center with no
independent zone amplifier then the switch should be set to
the right position (radio only). If your system is set up with a
Poly-Planar independent Zone Amplifier then the switch
should be set to the left position.
b. Keypad/Intercoms plugged into connector [25] will broadcast
into the Audio Center rear speakers (or into the Zone Amplifier
if present)
c. Keypad/Intercoms plugged into connector [24] will broadcast
into the Audio Center front speakers (or into Audio Center
front AND rear speakers if the Zone Configuration switch is set
to the left)
d. 2.5mm Stereo Connector [26] provides intercom signal to the
Zone Amplifier. If a Poly-Planar Zone Amplifier is present,
then a 2.5mm Stereo extension cable must be used to connect
between the Zone Amplifier and Connector [26]
e. Up to 2 MRR-7s can be connected to each connector by using
an optional ‘Y’ cable.
7) Refer to figures 5 and 6 for examples of typical system setups.
8) Use the included strip of adhesive sealing tape around all cable
connections to protect contacts from moisture and to insure that the
connection cannot vibrate or pull loose.
