Instruction manual

P83259 H
Sheet 13 of 26
5.
MOUNTING INSTRUCTIONS:
The MZC-144 is designed for indoor surface wall mounting. Remove the MZC-144 cover from the base (containing the PC
Board assembly) by removing the (1) screw on the front of the unit. Two keyholes and two circular holes are provided in the
base for easy installation. A diagram for mounting screw hole locations is given in Figure 9. Remote units are to be mounted
approximately 1/4 inch from the right side of the last unit installed. Recommended screw sizes are #6, #8, or #10 screws. Be
sure to use mounting hardware suitable for mounting surface.
Figure 9:
Mounting Diagram
11.000"
6.000"
UP
MOUNT UNIT WITH
KEYHOLES AT TOP
6.
SPECIFICATIONS:
Table 8:
Supply Voltage (Nominal) -24VDC
Supply Voltage Range -21.6VDC to -26.4VDC
Alert Tone Frequency 1100Hz +/-10%
Alert Tone Duration 500m Sec. +/-10%
Alert Tone Level -4dBM +/-3dBM
Tip and Ring Input Level -15dBM (0.1Vrms) to +10dBM (2.4Vrms)
Music Input Level -15dBM (0.1Vrms) to +10dBM (2.4Vrms)
Tip and Ring Input Impedance 600 Ohms
Music Input Impedance 600 Ohms
Max. Output Level to Amplifier 1 0dBM (0.78Vrms)
Output Impedance to Amplifier 1 4 Ohms
Max. Input Level from Amplifier 1 100W @ 25V, 250W @ 70V or 300W @ 100V
(Central Amplifier Output) See Note 4
Audio Output Level (Max. - Per Zone)
- Speaker - Amplifier Selected 0dBM (0.78Vrms), 600 Ohms
Audio Output Level (Max. - Per Zone Group)
- Central-Amplifier Selected
25W @ 25V, 70W @ 70V or 100W @ 100V
(Central Amp. Output) See Note 4
Operating Temperature Range 0 to 49 Degrees C
Operating Humidity Range 0 to 85% RH
Off-Hook Detection Sensitivity 1850 Ohms DC Resistance (Max.)
* Quantity of MZEM-3 Modules in System
0 1 2 3
Supply Current (Idle-BGM) 75mA 95mA 115mA 135mA
Supply Current (Nominal-1 Zone Page) 155mA 170mA 210mA 230mA
Supply Current (Maximum-All Call) 220mA 325mA 430mA 535mA
* Optional Talk-Back adds 25mA