Instruction manual
P83259 H
Sheet 18 of 26
NOTE:
Wire in star configuration. DO NOT daisy chain the power connections from one unit to the next as improper operation may
result.
4. Connect the zone amplifier, speaker amplifiers, or speakers with transformers to the audio pair for zones 1 thru 12 on TB1
of the MZC-144 and TB1 of each MZEM-3 module as required.
5. If one central amplifier is used for paging and background music, connect the output of central amplifier to MUSIC,
terminals 1 and 2 of TB1 on MZC-144 and TB1 on MZEM-3 modules, as required.
6. If separate central amplifiers are used, one for paging and one or more for background music, connect output of
background music amplifier(s) as described in note 5, above.
7. Connect the 24VDC power supply to the 115VAC source. When the MZC-144 is used in a Master/Remote configuration
make sure that the remote units are powered up prior to or at the same time as the master.
When using multiple power supplies, connect the positive terminals together at the power supplies.
NOTE
:
When only one central amplifier is used, background music will be muted in all zones when a page is in progress. When
separate central amplifiers are used, background music will be muted in only the paged zone.
13. DISCONNECTING:
An MZC-144 page will disconnect upon loss of loop current.
14. CONFIGURATION SETTING INSTRUCTIONS (SEE FIGURE 12 OR INSIDE OF MZC-144 COVER):
1. Verify that the Switch is in the “Talk Battery” position when connected to a telephone systems, unused CO/trunk port, 600
ohm audio page port, or directly to a telephone.
2. Set the Talk-Back Master selector switch, SW2.
A. Enabled
B. Defeated
3. Set the "Zone Amplifier/Central Amplifier" select switches for each group as required. See switch, SW3.
A. Central Amplifier
B. Zone Amplifier
4. Set the Board Address on selector switch SW4 per the table below.
Table 12: SW4 (1 = ON, 0 = OFF)
Board Address
Position 1234 Effect Zones
* 1111 Master 001-012
0111 Remote1 013-024
1011 Remote2 025-036
0011 Remote3 037-048
1101 Remote4 049-060
0101 Remote5 061-072
1001 Remote6 073-084
0001 Remote7 085-096
1110 Remote8 097-108
0110 Remote9 109-120
1010 Remote10 121-132
0010 Remote11 133-144
1100 Not Used N\A
0100 Not Used N\A
1000 Not Used N\A
0000 Not Used N\A
5. Set the Max Page Length, if necessary per the table below.
Table 13: SW6 (1 = ON, 0 = OFF)
Position Effect
* 1 ON Zone 1, One Way
1 OFF Zone 1, Talk-Back
* 2 ON Zone 2, One Way
2 OFF Zone 2, Talk-Back
* 3 ON Zone 3, One Way
3 OFF Zone 3, Talk-Back
4 ON Two Central Amps
* 4 OFF One Central Amp
* Denotes factory settings.