4
Overview
Features and Capabilities
The Digital Feedback Terminator has 4 minutes of available audio memory and can record up to
1
6 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 DFT
1
20 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 DFT
1
20 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:
1
0" W x
1
1
/
2
" H x 6
1
/
2
" D
Weight: 4.5 lb. (2 kg)
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.
1
25 Watts into 8 ohms, adjustable)
•
Relay contacts:All control relay contacts available are rated at
1
Amp, 24V DC noninductive loads
•
Power requirement:
1
2V DC,
1
Amp from wall-mounted power pack supplied
•
Memory Capacity: 240 seconds,
1
6 messages max., up to
1
minute max. per message
Environmental
Capable of operating in ambient temperatures from 0 to +40°C (+32 to
1
04°F) and relative humidity from 0% to 85%
(noncondensing), at altitudes up to
1
0,000 feet above sea level.
Interconnect
All external interface connectors are RJ
11
type and/or two piece screw terminal pluggable Euro-connector type.
