DFT120 Manual - Digital Feedback Terminator - Business Telecom ...

Audio Connections
Audio Input Connections
RJ11 style connector, 6 Position:
1. Not used.
2. Common for Record control
input (pin 5).
3. Ring / Audio in
4. Tip / Audio in
5. Record control input, connect to
ground (pin 2) to start page
recording.
6. Not used.
Input Mode Switch:
DL - Dry Loop position. For operation with phone system paging ports.
Requires dry contact output (connects to pins 2 & 5) for controlling
the recording of pages and a dry audio (no DC voltage) source
(connected to pins 3 & 4). If contact closure is not available, DTMF
or Audio start features can be used to control recoding, see page 7
for details.
LS - Loop Start position. For operation with Loop start trunks and
systems that require loop current to operate. Loop current draw from
the DFT120 will start the recording (connect to pins 3 & 4). See page
7 for details.
Audio Output Connections
RJ11 style connector, 6 Position.
1. Not used.
2. Play status contact common
3. Audio Output (-)
4. Audio Output (+)
5. Play status contact
6. Not used
Note: Play status contact changes states when the unit is playing a page.
Type of closure (normally open or closed) is selectable, see page 6
for details.
Output Impedance Switch:
8 - 8 Ohm position. Will supply up to 0.125 watts of output signal
(transformer isolated) into an 8 ohm load (connect to pins 3 & 4).
600 - 600 Ohm position. Will supply up to +4dBm of output signal
(transformer isolated) into a 600 ohm input (connect to pins 3 & 4).
4