6
Matrix 4 I
NSTALLATION AND OPERATION MANUAL
Multiple CPM-4 paging microphones can be connected to a Matrix 4 if wired as follows: -
Wiring Multiple CPM-4 Microphones to a Matrix 4
IMPORTANT NOTE: CV POWER TO FIRST CPM-4 ONLY
Details of the 9-pin D-Type connector terminations are below: -
Pin 1 Z3 logic signal
Pin 2 Z2 logic signal
Pin 3 Z1 logic signal
Pin 4 Logic 0V
Pin 5 Mic audio signal (+)
Pin 6 Z4 logic signal
Pin 7 +15V power
Pin 8 Mic 0V (screen)
Pin 9 Mic audio signal (-)
Connector shell (earth)
14
Paging Microphone Channel
In addition to the provision to interface the CPM-4 four zone paging microphone, the paging
mic channel is compatible with most microphones via the 3-pin XLR type connector. The
Matrix 4 will operate with a standard paging mic with on/off button (signal muting type).
When the 9 pin connector is not connected to a CPM-4, zone control reverts to the front
panel routing switches. Phantom power is available (+15V) on the paging mic input and can
be activated by configuring the adjacent PCB mounted jumper (
See section 5 for full details
).
15
Paging Microphone Input Gain
The gain of the paging microphone amplifier is similar to the four standard mic inputs with
PCB mounted jumper ‘J5’ allowing the selection of 40dB or 0dB gain. Gain compatibility with
the Cloud CPM-4 paging microphone is provided by a third position on the jumper J5. When
several CPM-4 mics are connected to one Matrix 4, the 40dB gain setting should be used.
Jumper J5 Location and Settings
LINE INPUT - 0dB GAIN
MIC INPUT - 40dB GAIN
CPM 4 INPUT - 30dB GAIN
PAGING MIC GAIN
PAGING
MIC
INPUT
When setting the jumpers please ensure that you:
•
Remove the mains cable from the rear of the product before removing the top panel.
•
Only reassemble the unit using screws identical to the original parts.
16/12/02 V6.0
