Nat PTA12-100, Installation And Operation Manual

Page: 15 / 52

SM55 Rev.
4
.00 PTA12-100 POTS Telephone Adapter with Display Manual
O
utput Signals
Phones:
Rated level 20 dBm
±
3 dB into 600 or 150 Ohms @ 100mW
C ircuitry Type Differential
F requency Response
≤
3 dB roll-off from 350 Hz to 3 kHz
D istortion
≤
5% THD @ rated power output
A udio Noise (no signal)
≤
-50 dB from rated output
Available Audio RX audio, Sidetone, DTMF sidetone
Ringing tone (enabled or disabled externally)
RX Audio See RX Audio in the Bidirectional Signals
section for rated output level
Sidetone Rated mic input yields rated phones output
with rated TX mic audio set on TIP/RING and
both front panel VOL control and S/T level
potentiometer set to max
DTMF Sidetone -9 dBm
±
3 dB into 600 Ohms
Ringer Audio 14 dBm
±
2 dB into 600 Ohms with ringer audio
enabled on the Phones Output (RGR internal
switch set to DOWN) and 2.5 Vrms setup on
the Ringer Audio Output
Ringer Audio: Ringer audio present (based on ringing
cadence)
Level 2.5
±
0.3 Vrms (typ)
3.6
±
0.4 Vrms (max) into 600 Ohms
Circuitry Type Single Ended
Ringer Drive: Pulled to Power Ground when ringer is active
(based on ringing cadence)
Open collector, 250mA max sink current @
+28 Vdc
Over-current and over-voltage protected
Key Out: When Key In is wired for Hook latching or is
tied to Power Ground, this output is pulled to
Power Ground when the Hook Switch is active.
Solid state relay output, optically isolated,
100mA max sink current @ +28 Vdc
Bidirectional Signals
POTS (2 wire) Polarity insensitive and current limited
Sep 21, 2004 Page 1-3
ENG-FORM: 800-0108.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.