Data Sheet

Audio Memory Capacity: 240 Seconds
Maximum Message Length: 60 Seconds
Message Stacking Capacity: 16 Messages
Audio Sampling: 12 Bit word at 16 kHz
Frequency Response: 100 Hz to 6.8 kHz +/-3 dB
Distortion: < 1.0% (THD max., typical)
Signal-to-Noise Ratio: 60 dB
Dynamic Range: 60 dB
Page Input/Priority Audio Input: 600-ohms, transformer-isolated, with -20dBm to +4 dBm
(nominal 0 dBm) input level
Type — Loop start trunk or 4-wire dry loop, switch selectable
Connector — RJ-11 (6 position)
Audio Output:
Type — Transformer isolated, unbalanced
I
mpedance/Power— 8 ohms / 0.125W or 600 ohms / +4 dBm, switch selectable
Connector — RJ-11 (6 position)
Controls & Switches: Volume
Input type (loop start / dry loop)
Output impedance (8- or 600-ohm)
Setup DIP switches (bank of 12)
External Control Inputs: Record, Play, Stop
Status Outputs: Record, Play, In Use
Status Contact Rating: 24V DC, 1A
LED Status Indicators: Power, Play, Record, In Use
Protective Fusing: 0.6A, Internal automatic reset
Power Consumption: 12V DC / 1Amp
Dimensions: 10" W x 6.75" H x 1.5" D
Product Weight: 3 lb.
Technical
Specifications
Architect
and Engineer
Specifications
The feedback termination device shall be a model
DFT120, with 240 seconds of memory and the ability to
record up to 16 messages while simultaneously playing
previously recorded messages. The deviceʼs operation
shall be capable of automatic or external control.
The feedback terminator shall provide a frequency
response from 100 Hz to 6.8 kHz +/-3 dB. Distortion
shall be less than 1% over its bandwidth. The mes-
sages shall have a dynamic range of at least 60 dB and
a signal to noise ratio of at least 60 dB.
The feedback terminator shall accommodate both loop
start trunks and 4-wire dry loop interfaces, selectable
by a slide switch. The input connector style for the inter-
face shall be an RJ-11 type.
Further, the device shall provide an output capable of
either 8 ohms @ 0.125W or 600 ohms @ +4 dBm,
selectable by slide switch. The output connector style
for the interface shall be an RJ-11 type. A control to
adjust the output signal level shall be provided.
A bank of DIP switches shall be accessible to set
device operating features. The feedback terminator
shall have the ability to start recording based on loop
start, dry loop, audio triggered, or DTMF activation
methods. The device shall be capable of stripping the
DTMF tones out of the recorded message in either the
beginning or in the middle of the message. The device
shall be able to regenerate DTMF tones in a message
and to limit the number of DTMF tones a message can
contain before the recording is aborted. The device
shall allow for 2, 3, 4, or an unlimited number of DTMF
tones in a message. The device shall allow a recording
to be aborted by the issuance of 2 DTMF “#” digits in
succession.
The selection of a pre-page tone shall be available. The
recorded message shall be able to automatically replay
and the time duration between message plays shall be
selectable as 1, 3, 5, or 10 seconds.
The feedback terminator shall have contact closures
that indicate if the unit is in use, playing and/or record-
ing. An internal jumper shall be able to set the contact
for normally open or normally closed operation.
The feedback terminator shall be wall mountable and
use an external power supply. The power supply shall
be UL and CSA listed.
50 Spring Street, P.O. Box 575, Ramsey, NJ 07446
Tel. [phone] • Fax: [phone]
www.bogen.com