Specifications

diagram for mounting screw hole locations is given in Figure 9. Recommended screw sizes are #6, #8, or #10 screws. Be sure to use mounting
hardware suitable for mounting surface.
FIGURE 9
MOUNTING DIAGRAM
SPECIFICATIONS
SUPPLY VOLTAGE (NOMINAL) -24VDC
SUPPLY VOLTAGE RANGE -21.6VDC to -26.4VDC
ALERT TONE FREQUENCY 1100Hz +/-10%
ALERT TONE DURATION 420m 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 or 150W @ 70V (central amplifier output)
See Note 2
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 or 70W @ 70V (central amp. output)
See Note 2
OPERATING TEMPERATURE RANGE 0 to 55 degrees C
OPERATING HUMIDITY RANGE 0 to 85% RH
OFF-HOOK DETECTION SENSITIVITY 1850 Ohms DC Resistance (1400 to 2200 Ohms)
QTY OF ZEM-3 MODULES IN SYSTEM
0 1 2 3
SUPPLY CURRENT (IDLE-BGM) 77 mA 77 mA 77 mA 77 mA
SUPPLY CURRENT (NOMINAL-1 ZONE PAGE) 177 mA 302 mA 227 mA 252 mA
SUPPLY CURRENT (MAXIMUM-ALL CALL) 227 mA 327 mA 427 mA 527 mA
P81982 K
Sheet 14 of 21
ZONE ACCESS AND DIALING CODES