Installation Manual

Overview

Features and Capabilities

The Digital Feedback Terminator has 4 minutes of available audio memory and can record up to 16 paging

messages. A single page can have a maximum length of 1 minute. The unit can record new pages while

playing back previously recorded pages.

The DFT120 eliminates feedback over the paging system by opening the loop between the input microphone

and the speakers. This not only eliminates the potential for acoustic feedback, but also gives the user

flexibility in the manner in which pages are broadcast.

Multiple Record and Playback options are supported, as well as Pre-Page Tones, Message Repeat, and

Adjustable Delay Between Message Repeats functions. Abort and Stop functions are also available.

The DFT120 includes a transformer-isolated 600-ohm page input and priority override input, as well as a

transformer-isolated switchable 8-ohm or 600-ohm audio output.

Specifications

Physical

Maximum dimension: 10" W x 6-

/4" H x 1-

/2" D

Weight: 3 lb.

Electrical

• Frequency Response: 6.8 kHz, and 60 dB of dynamic range

• Page Audio Input: 600 ohms, transformer-isolated, with -20 dBm to +4 dBm (nominal 0 dBm) input level

• Priority Audio Input: 600 ohms, transformer-isolated, with -20 dBm to +4 dBm (nominal 0 dBm) input

level

• Selectable Audio Output: Line Output (600 ohms, transformer-isolated, +4 dBm max. continuously

adjustable) or Power Output (8 ohms, transformer isolated, limited to approximately 0.125 Watts into

8 ohms, adjustable)

• Relay contacts: All control relay contacts available are rated at 1 Amp, 24V DC noninductive loads

• Power requirement: 12V DC, 1 Amp from wall-mounted power pack supplied

• Memory Capacity: 240 seconds, 16 messages max., up to 1 minute max. per message

Environmental

Capable of operating in ambient temperatures from 0 to +40°C (+32 to 104°F) and relative humidity from 0%

to 85% (noncondensing), at altitudes up to 10,000 feet above sea level.

Interconnect

All external interface connectors are RJ11 type and/or two piece screw terminal pluggable Euro-connector type.