¾ 3-3-12 ¾
Installing Optional Equipment
Installing the Doorphone Box:
This section provides information on installing the Doorphone Boxes in TX-Z 1232/2464 system.
Specifications:
150 m wire maximum of 0.5
f
twisted telephone cable.
Step 1:
Connect wires to the terminal marked R and C on the back of the Doorphone Box, and connect
the other end to DH1 on the 24DHU-A1 PCB for Doorphone Box 1 or DH2 for Doorphone Box 2.
Step 2:
Adjust the audio level with VR3 on the 24DHU-A1 PCB for Doorphone Box 1 or VR4 for
Doorphone Box 2.
Installing External Paging Output:
This section provides information for the installation of external devices to the external zone(s). Each
zone can receive Trunk Audible, BGM and Paging. Speakers can be used to broadcast these signals at
the zone. External page zones can be used to provide Meet-Me Paging. External zones have normally
open contacts. The relays for each zone are energized when Paging amplifiers are in use, including
Trunk audible and BGM (if programmed).
Specifications:
Output impedance: 600 ohms
Output Level: Nominal 250 mV (
-
10 dBm)
Maximum Output: 400 mV RMS
Relay Contact: 1.25 amps for 24 V DC resistive loads
Step 1:
Connect wires from the connector on the 24DHU-A1 PCB labeled SPK1 to an amplifier for
External Zone 1, or connector labeled SPK2 to an amplifier for External Zone 2. The amplifier inputs must
match the specifications above. Attach the speaker to your amplifier.
Step 2:
Connect wires from the connector an the 24DHU-AI PCB labeled CTR 1 to the device for
External Zone 1, or connector labeled CTR2 to the device for External Zone 2.
Step 3:
Adjust the volume level of External Zone 1 with VR1, or adjust the volume level of External Zone
2 with VR2 on the 24DHU-AI PCB.
Installing External Alarm Sensor:
This section provides information on the installation of an external alarm. Two alarms can be connected
to the system. Programming determines if the alarm inputs require an open or a closed circuit.
Specifications:
When using internal power.
Loop Resistance: Less then 100 ohms.
When using external DC power.
Supplied DC power to system:
5 to 24 V DC with 0.65 mA to 4.5 mA.
Step 1:
Connect wires form External Alarm 1 to the connector on the 24DHU-A1 PCB labeled ALM1.
Step 2:
Connect wires form External Alarm 2 to the connector on the 24DHU-AI PCB labeled ALM2.
NOTE:
When using internal power to connect the dry contact of alarm-detecting device to the system,
set SW1 for Alarm 1 or SW2 for Alarm 2 to the INPOW position.
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