Nat PTA12-300 - 1 Description; Lntroduction; Product Description; Design Features

:f:nat
PTAI2-300
POTS
Telephone Adapter
with
NVIS
Display
SM55-3 lnstallation
and Operation
Manual
Section I Description
1.1
lntroduction
lnformation
in this section
consists
of
product
description,
design features
and specifications
for the
PTAI2-300
POTS Telephone
Adapter
with NVIS Display.
All derivative
product
information
shall be
contained in
the applicable manual
supplement,
which may
be obtained from NAT
as
required.
Review
all notes,
warnings
and cautions.
1.2
Product
Description
The
PTA12-300 POTS
Telephone
Adapter With
NVIS Display is
a
keypad
control and
display
unit
for
airborne telephone
system
applications. The
PTAI2-300
connects to a telephone
system transceiver
by a
two-wire
POTS
(Plain
Old Telephone
Service) interface. The
PTA12-300 can be
connected to the
aircraft
audio
controlle(s)
or directly to
an aviation headseVhandset.
Note:
The PTA12-300
is designed
to meet
standard North American PSTN
requirements,
but it is not
recommended
or approved
for landline
applications.
1.3
Design Features
The PTA12-300
POTS
Telephone
Adapter is
a compact Dzus mounted POTS
telephone interface
with
a
keypad
and
display. Many
of
the
PTAI2-300 functions
are controlled
by a microcontroller,
The
functions
of the PTA12-300
include
speech
audio circuits, hook switch, ring indication,
flash,
hold,
redial,
serialdata
communications,
backlighting, display,
speed dial, GlobalstarrM
SATCOM
status, DTMF
tone
generation
and ringer
audio
generate.
The
speech audio circuits include
a mic input
amplifier
and a
phones
output
amplifier with front
panel
volume
control.
Hook
switch
control and indication
is
provided
on the front
panel.
The hook switch may
be controlled
and
its
status viewed
from a location
remote to the PTAI2-300
front
panel.
Ring indication
is
also
provided
on
the front
panel
with
a flashing
green
LED. A flash
key is
provided
on
the front
panel
to interrupt
the hook.
A hold key
on the front
panel
mutes
all audio to and from the
headset and is indicated
by a
green
LED.
A
redial
key on
the front
panel
automatically redials
the last number
called.
A two-wire POTS
port
achieves the interface
to the satcom
system transceiver. A serial
port
allows
for
data communications
to
satcom systems.
The front
panel
keypad has
NVIS compliant
backlighting
provided.
The
display is
an
LED
dot matrix
character display
with brightness
control
The
display is filtered
for NVIS
radiance requirement.
Speed dial
allows numbers
to be
stored and
recalled
from memory.
lndication of
GlobalstarrM
satcom
signal strength and system
availability status is
provided
by LED
lit
dead-front text on the
front
panel
Section I Rev: 1.00
lssue 4
page
1-1
ENG-FORM:
800-01 14 DOT
CONFIDENTIAL
AND PROPRIETARY
TO NORTHERN
AIRBORNE TECHNOLOGY
LTD.
The document reference is online, please check the correspondence between the online documentation and the printed version.