Nat PTA12-300 User manual

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I
lnstallation and Operation Manual
PTAI 2-300
POTS Telephone Adapter
with NVIS Display
sM55-3
rssuE 4.02
Northern Airborne Technology Ltd.
1925 Kirschner Road
Kelowna, BG, Canada.
VIY 4N7
Telephone [phone]
Facsim i le (2501 7 62-337 4
lssued on the authority of Northern Airborne Technology Ltd.
Copyright 2005
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:*lnau
PTAI2-300 POTS Telephone Adapter with Display
SM55-3 lnstallation and Manual
The status of this installation and operation manual is controlled by issue shown on the title page. The
status of each section is controlled by revision shown in the footer of each page. All revisions affecting
sections of this manual have been incorporated into the latest issue.
NAT
269 DE
05
l.lAT
246
Prepared By: NAT
25s
Approved By:
ISSUE/REVISION RECORD
Manual lssue
Number Section
Revision Number Revision Description lssue Date
4.O2 Section 2 Rev: 1.01 Updated drawing revision Apr 1 3, 201 0
4.01 Section 1 Rev: 1.00
Section 2 Rev: 1.00
Section 3 Rev: 1.00
lnitial release. Oct 10,2008
lnstallation and Operation Manual
ENG-FOHM:820-0115 DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHEFN AIRBORNE TECHNOLOGY LTD.
Page ii
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PTA12-300 POTS Telephone Adapter with Display
SM55-3 lnstallation and Operation Manual
Table of Gontents
Section Title Page
1Description
1.1
1.2
1.3
1.4
1.4.1
1.4.2
1.4.3
lntroduction
Product Description
Design Features
Specifications
Electrical Specifications
Physical Specifications
Environmental Specifications
lnstallation
1-1
1-1
1-1
1-2
1-2
1-5
1-6
2.
2.1
2.2
2.2.1
2.3
2.4
2.4.1
2.4.2
2.4.3
2.4.4
2.5
2.6
2.7
3.
lntroduction
Unpacking and lnspection
WarranÇ
Continued Airworthiness
lnstallation Procedures
Warnings
Cautions
Cabling and Wiring
Post-lnstallation Checks
Adjustments and Connections
Accessories Required But Not Supplied
lnstallation Drawings
Operation
2-'l
2-1
2-1
2-1
2-2
2-2
2-2
2-2
2-2
2-3
24
24
3.1
3.2
3.3
3.3.1
3.3.2
3.3.3
3.4
3.5
3.s.1
3.5.2
3.5.3
3.6
lntroduction
General lnformation
Controls and lndicators
Display
Keypad Controls
Annunciators
Name / Number Storage and Display
Modes of Operation
CallMode
Recall Mode
Edit Mode
Keypad Function Tables
lnstallation and Operation Manual Page iii
ENG-FORM: 820-01 1 5.DoT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
3-1
3-1
3-2
3-2
3-2
34
3-5
3-5
3-5
3-6
3-6
3-8
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: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.
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t
PTA12-300 POTS Telephone Adapter with NVIS Display
SM55-3 lnstallation and Operation Manual
1.4 Specifications
1.4.1 Electrical Specifications
Power Supolv
lnput Voltage
Normal operation
lnput Current
Liqhtinq
lnput Siqnals
Microphone
lmpedance
Circuitry Type
Mic Bias
Key ln
Outout Siqnals
Rated Level
Circuitry Type
Frequency Response
Distortion
Audio Noise
AbnormalOperation +32.2Vdc(maximum)
+27.5 Vdc (nominal)
+20.5 Vdc (minimum)
Power lnput Voltage with reverse, over voltage and over current
protection
+30.3 Vdc (maximum)
+27.5Vdc (nominal)
+22.OVdc (minimum)
+18.0 Vdc (emergency)
0.3 Amps max. @ +27.SVdc
1.0 mA max. @ +27.5Vdc
1.0 mA max. @ +5.0 Vdc
250 mVrms rated input level, amplified dynamic
150 Ohm t10%
Single Ended
+13 +0.5 Vdc (selectable via switch)
Used to remotely controlthe Hook function. Momentarily pull to
Power Ground for a period greater than 500 ms to activate the
Hook function. Momentarily open circuit or apply voltage greater
than 26 Vdc for a period greater than 500 ms to set the Hook to
inactive. Optically isolated and requires 10 mA max source
current.
20 dBm +3 dB into 600 or 150 Ohms @ 100mW
Differential
(3 dB roll-off from 350 Hz to 3 kHz
<5% THD @ rated power output
< -50 dB from rated output (no signal)
Section 1 Rev: 1.00 lssue 4 Page 1-2
ENG-FORM: 800-01 14.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
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PTAI2-300 POTS Telephone Adapter with NVIS Display
SM55-3 lnstallation and Operation Manual
Available Audio
RX Audio
Sidetone
DTMF Sidetone
Ringer Audio
Level
Circuitry Type
Ringer Drive
Key Out
Bidirectional Sionals
POTS (2 wire)
On-hook Condition
DC Voltage
Resistance
Ringing Condition
lmpedance
Withstands +70 Vdc max.
10M to 15M Ohms
RX audio, Sidetone, DTMF sidetone
Ringing tone (enabled or disabled externally)
See RX Audio in the Bidirectional Signals section for rated output
level
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.
-9 dBm +3 dB into 600 Ohms
14 dBm t2 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 present (based on ringing cadence)
2.510.3 Vrms (typical)
3.610,4 Vrms (max) into 600Ohms
Single Ended
Pulled to Power Ground when ringer is active (based on ringing
cadence)
Open collector, 250m4 max sink current @ +29 V¿c
Over-current and over-voltage protected
When Key ln 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, 100m4 max sink
current @ +28 Vdc
Polarity insensitive and current limited
10k to 15k Ohms @ 25 Hz
Active when ringing signal on tip/ring >30 Vrms @ 25 Hz
lnactive when ringing signalon tip/ring <10 Vrms @25H2
Accepts square or sinusoidal ringing functions
Withstands 120 Vrms (max), 25 Hz sinusoidal ringing function
Section 1 Rev: 1.00 lssue 4 Page 1-3
ENG-FORM: 800-01 14.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
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PTA12-300 POTS Telephone Adapter with NVIS Display
SM55-3 lnstallation and Operation Manual
Off-hook Condition
lmpedance
Circuitry Type
DC Loop Current
DC Voltage
Frequency Response
Distortion
Audio Noise
Available Audio
TX Audio
(Mic lnput to tip/ring)
RX Audio
(Typ expected
audio level)
DTMF Signaling
Frequency Tolerance
Supported Codes
DTMF TX on tip/ring
SerialPort
Baud Rate
Frame Size
Parity
Stop Bits
Flow Control
600 Ohms @1kHz (nominal)
Balanced
25 mA (typical)to 130 mA (max)
<9.0 Vdc @ 25 mA loop current
<3 dB roll-off from 350 Hz to 3 kHz
<5% THD
< -50 dB from rated output (no signal)
TX Audio, RX Audio
-1 dBm +1dB into 600 Ohms with <5% THD
(test conditíon: 250 mVrms @ lkHz into Mic input, Mic level
potentiometer set to max.)
-20 to 0 dBm
400 mVrms @ lk{z RX audio on TIP/RING yields rated phones
output with both front panel VOL control and RX level
potentiometer set to max.
Standard DTMF frequencies used
!1 .5o/o
0-9,.,#
-2.2 d9m f 1.0 dB into 600 Ohms (DTMF level potentiometer set
to max.)
RS232 protocol, RX, TX and GND
I 9200
I bíts
none
1
Not available
Section 1 Rev: 1.00 lssue4 Page 1-4
ENG-FORM:800-01 14 DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
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PTA12-300 POTS Telephone Adapter with NVIS Display
SM55-3 lnstallation and Operation Manual
1.4.2
Annunciators HK, HLD, LNK and SYS, green LED with dead-front text
HK (Hook Status / Ringer Active)
On Hook LED off
Off Hook LED on
Ringer On LED flashes (0.33 second period @ 50% duty cycle)
HLD (Hold Status)
On Hold LED on
Off Hold LED off
LNK (satcom link)
Link Established LED on
Link Down LED off
SYS (satcom system)
Available for Voice LED on
Busy LED off
Physical Specifications
Height
Depth
width
1.52" (38.6 mm)
4.17'(105.9 mm) max. behind panel
5.77" (146.6 mm) in front of panel
4.82" (122.4 mm) behind panel
Weight
Mounting
Front Panel
0.80lbs (0.36 kg)
Dzus Mounting (four fasteners)
Aluminum with polycarbonate labeland elastomeric keypad
Silicone rubber, tactile push-buttons backlit by amber LEDs
Front panel bezel is not backlit
Display 16 5x7 pixel characters with NVIS green B-friendly polarized filter
NVIS green B-compliant radiance and luminance per
MIL-STD-3009
Chromaticity non-compliant per MIL-STD-3009.
Section I Rev: 1.00 lssue 4 Page 1-5
ENG-FORM: 800-01'14 DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
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PTAI2-300 POTS Telephone Adapter with NVIS Display
SM55-3 lnstallation and Operation Manual
Annunciator LEDs NVIS green B filtered and covered by a polycarbonate lens
Meets daylight readability per MIL-STD411 Sec 5.1.3.3
Annunciators with filters are NVIS Green B compliant per
MIL-STD-3009
Backlighting
Material/Finish
NVIS Green B compliant per MIL-STD-3009.
Chassis & cover are 5052-H32 brushed aluminum with chromate
conversion finish
Front panel aluminum bezel is 6061-T6 with black paint and
matte clear coat over chromate conversion finish
Connectors One male filtered 25 pin D-submin with Positronics V5 locking
tabs
1.4.3 Environmental Specifications
Temperature -20 to +55"C (operating)
-55 to +85'C (survival)
Altitude 50,000 feet max.
Humidity > 95%
Vibration DO-160D Cat. [(SBMXUF)]
Qualification of the PTAI 2-100 POTS Telephone Adapter with Display was completed in accordance with
DO-1 60D Env. Cat. A1 /D 1 -BAB[(SB M XU F)]XXXXXXZBAB BIU UX] MXXXX.
Note: Tested to DO-160D pre-change 1and2.
Section I ends
Section I Rev: 1.00 lssue4 Page 1-6
ENG-FOR¡r: 800-01 l4.DOT
CONFIDENTIAL AND PROPR¡ETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
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PTAI2-300 POTS Telephone Adapter with NVIS Display
SM55-3 lnstallation and Operation Manual
Section 2 lnstallation
2.2
2.1 lntroduction
lnformation in this section consists of unpacking and inspection procedures, installation procedures, post-
installation checks and installation drawings for the PTAI2-300 POTS Telephone Adapter with NVIS
Display.
Review all notes, warnings and cautions.
Unpackinq and lnspection
Unpack the equipment carefully and locate the warranty card. lnspect the unit visually for damage due to
shipping and report all such claims immediately to the carrier involved. Check that all items listed below
are present before proceeding and report any shortage immediately to your supplier:
- Warranty Card
- Operators Manual
- Certificate of Conformity or Release Certification
2.2.1
All Northern Airborne Technology Ltd. products are warrantedfo¡ 2 years from date of installation by an
authorized Northern Airborne Technology Ltd. dealer, to be free of defects in workmanship or
performance. This warranty covers all materials and labour, but is exclusive of any transport to deliver the
defective unit to and from Northern Airborne Technology Ltd. or its designated warranty repair center, or
any labour to remove or re-install the defective unit in the aircraft. Contact Northern Airborne Technology
Ltd. for any questions regarding this warranty, its applicability to your units and/or for return authorization.
Northern Airborne Technology Ltd. is the final arbitrator concerning warranty administration. Units which
have been physically damaged, burned, immersed in water or otherwise abused beyond the scope of
normal use will not be considered for warranty. WARRANTY lS VOID UNLESS THE PRODUCT ¡S
INSTALLED BY AN AUTHORIZED NORTHERN AIRBORNE TECHNOLOGY LTD. DEALER. Product
for which a warranty card is not returned shall be warranted from date of manufacture.
2.3 Continued Airuvorthiness
Maintenance of the PTAí2-300 POTS Telephone Adapter with NVIS Display is 'on condition' only
Periodic maintenance of this product is not required.
Section 2 Rev: 1.01 lssue 4 Page 2-1
ENG-FORM: 805-0121.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
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PTAI2-300 POTS Telephone Adapter with NVIS Display
SM55-3 lnstallation and Operation Manual
2.4 lnstallation Procedures
2.4.1 Warninqs
WARNING:
High volume settings can cause hearing damage.
Set the headset volume control to the minimum volume setting prior to conducting
tests, and slowly increase the headset volume to a comfortable listening level.
2.4.2 Cautions
CAUTION:
Do not take a ground from the instrument panel or similar location that shares a ground
return with a turn and bank, horizon or other motor driven instrument. This may cause the
PTA12-300 unit to pick up the sound of the motor as ground loop interference.
2.4.3 Cablins and Wirinq
All wire shall be selected in accordance with the original aircraft manufacturer's Maintenance lnstructions
orAC43.13-1B Change 1, Paragraphs 1l-76 through 11-78. Unshielded wire types shallqualifyto
MIL-W-22759 as specified in 4C43.13-18 Change l, Paragraphs 11-85, 11-86, and listed in Table 11-11
For shielded wire applications, use Tefzel MIL-C-27500 shielded wire with solder sleeves (for shield
terminations) to make the most compact and easily terminated interconnect. Follow the connector map in
Section 2.7 as required.
Allow 3" from the end of the shielded wiring to the shield termination to allow the connector hood to be
easily installed. Reference the interconnect drawing in Section 2.7 fo¡ shield termination details.
Maintain wire segregation and route wiring in accordance with the original aircraft manufacturers
Maintenance lnstructions.
Unless othen¡¡ise noted, all wiring shall be a minimum of 22 AWG, except power and ground lines, which
shall be a minimum of 20 AWG. Reference the lnterconnect drawing for additional specifications. Check
that the ground connection is clean and well secured, and that it shares no path with any electrically noisy
aircraft accessories such as blowers, turn and bank instruments or similar loads.
2.4.4 Post-lnstallation Ghecks
2.4.4.1 Voltaqe/Resistance Checks
Do not attach the PTA12-300 until the following conditions are met.
Check the following:
a) Check P101, pin <1> for +28 Vdc relative to ground.
b) Check Pí01, pin <3> for +28 Vdc OR pin <4> lor +5 Vdc relative to ground.
c) Check P101 , pins <14>, <16> and <19> for continuity to ground (less than 0.5O).
Section 2 Rev: 1.01 lssue 4 Page 2-2
ENG-FORM:805-0121 DoT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
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PTAI2-300 POTS Telephone Adapter with NVIS Display
SM55-3 lnstallation and Operation Manual
2.4.4.2 Power On Ghecks
Notes: 1 . PTA12-300 functionality is highly dependant on the airborne telephone system interface.
Check proper operation of the telephone transceiver, and check that the transceiver has
an activated telephone line.
2. Where the PTAI2-300 is connected to an existing audio system, check that the PTAI2-300
is properly selected when performing audio checks.
Power up the aircraft's systems and confirm normal operation of all functions of the PTA12-300. Refer to
Section 3 (Operation) for specific operational details.
a) lnitiate a callto a valid telephone number and verify the operation for HOOK, HOLD, DTMF
keys (0 - 9, *, #) and VOL. Re-initiate the call using REDIAL. Test the FLASH function (where
applicable)while in the off-hook state (active).
b) Place the PTA12-300 in the on-hook (inactive) state, and have another party call the line
connected to the PTA12. Confirm proper RINGER, HOOK and HOLD operation.
c) To verify proper operation, all functions and levels shall be checked in-flight.
Upon satisfactory completion of all performance checks, make all required log book entries, electrical
load, weight and balance amendments and other documentation as required by your local regulatory
agency before releasing the aircraft for service.
2.5 Adjustments and Connections
@
@
@rrs
@o
@t/t
@nx
@vrc
@ncn
The following adjustments are accessible through holes in the side of the unit shown in Figure 1
Rotating the trimpots cw will increase the level of the related output and ccw
will decrease it.
lnternal Trimpot Adiustments
LTS adjusts keypad backlighting levelfrom min to max
DTMF adjusts DTMF level on POTS interface
S/T adjusts sidetone level
Ð( adjusts receive level on phones output
MIC adjusts mic levelon POTS interface
RGR adjusts ringer level on both ringer audio and phones output
lnternal Switch Settinos
RGR on [down]
(ringer select) off [up]
ringer audio available on both phones
and ringer audio outputs
ringer audio only available on ringer audio
output
flash = 90 ms +40 ms
flash = 600 ms +100 ms
mic bias supplied by PTA12
mic bias not supplied
FLA / FLB
(hook flash)
Mtc
(mic bias)
select FLA
select FLB
on [down]
off lupl
Figure 1:Adjustments
Section 2 Rev: 1.01 lssue 4 Page 2-3
ENG-FORM: 805-0121.DOT
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PTA12-300 POTS Telephone Adapter with NVIS Display
SM55-3 lnstallation and Operation Manual
2.6 Accessories Required But Not
lnstallation kit p/n D2SSV-|KC (crimp) is required to complete the installation. The kit consists of the
following:
Quantity
,|
25
1
Description
D-min 25 Socket Housing
MS Crimp Socket
25 Pin JVL Hood/Locklever
NAT Part No,
20-21-025
20-26-901
20-29-250
2.7 lnstallation Drawinqs
lnsert into the following list all applicable lnstallation Drawings (including a minimum of 403, 405,922 or
952 and if available the 404, 521 and 905). See following example.
DOCUMENT REV. DESCRIPTION TYPE
PTAI
PTA12\300\403-0
PTA12\300\403-1
PTA12\300\403-2
PTA12\300\403-3
PTA12\300\4034
PTA12\300\405-0
PTA12\300\905-0
PTAl2\300\922-0
sTxr00-000
sTX100\000\403-6
sTX100\000\403-7
'1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.10
POTS Telephone Adapter with NVIS Display
POTS Telephone Adapter with NVIS Display
POTS Telephone Adapter with NVIS Display
POTS Telephone Adapter with NVIS Display
POTS Telephone Adapter with NVIS Display
POTS Telephone Adapter with NVIS Display
POTS Telephone Adapter with NVIS Display
POTS Telephone Adapter with NVIS Display
STX1 00 GLOBALSTARil Satphone Receiver
STXI 00 GLOBALSTARil Satphone Receiver
lnterconnect
lnterconnect
lnterconnect
lnterconnect
lnterconnect
Connector Map
Faceplate
Mechanical lnstallation
lnterconnect
lnterconnect
1.00
1.00
Section 2 ends following the above documents
Section 2 Rev: 1.01 lssue 4 Page 2-4
ENG-FORM: 805-0'121 DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
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DESIGNED SRK
DRAWN MWS srrat NORTHERN ATRBORNE TECHNOTOGY LTD.
DATE Y1
NAT
205 NAT 255
CHECKED
TITLE POTS TELEPHONE ADAPTER
WTH NVIS DISPLAY
't14
APPROVED SIZE
ACAGE CODE
3ABO1 PART NO.
PTAl 2-300 REV 1.00 SHEET
1/5
F|LE 405-0.DWG DWG. TYPE INTERCONNECT
PTA1 2-3OO INSTALLATION NOTES
NOTES:
1. ALL WRES SHOULD BE 22 AWG UNLESS OTHERWISE SPECIFIED. ALL
UNSHIELDED WRE SHALL BE SELECTED IN ACCORDANCE WITH
AC43.13-18 CHANGE 1, PARAGRAPHS 11_76 THROUGH 11_78. WIRE
TYPES SHOULD BE TO MIL_W_22759 AS SPECIFIED IN AC43.13-18
CHANGE 1, PARAGRAPHS 11_85, 11-86 AND LISTED IN TABLE 11-11
ALL SHTELDED WRE/CABLE SHOULD BE rN ACCORDANCE WTH
MtL-C-27500.
MIC LO MUST BE GROUNDED AT AUDIO PANEL.
^
A
A
A
A
^
PULLED TO POWER GROUND WHEN ACTIVE. +28 VDC MAX @ 25OmA MAX.
8
ONLY +28VDC LIGHTS OR +sVDC LIGHTS IúAY BE USED AT ONE TIME.
PTA12 PHONES OUTPUT lS TRANSFORMER COUPLED (BALANcED); 'LO' WIRE
REQUIRES TERMINATION,
TrE TO A/C GROUND TO ENABLE REMOTE HoOK ANNUNCIATTON.
PULLED TO POWER GROUND WHEN ACTIVE AND J1O1 PIN'19 TIED
ro A/c GRouND. +28VDC MAX @ 100m4 Ì'/AX.
THIS DRAWING APPLIES TO THE FOLLOWING MODELS: PTA12-300
DEFINITIONS:
Nr/c: NO CONNECTION. THE PIN IS NOT CONNECTED TO ANYTHING
INTERNALLY, AND THEREFORE SHALL HAVE NO CONNECTION EXTERNALLY
RESERVED MAY BE CONNECTED AND USED IN THE FUTURE.
THE CIRCUITRY MAY BE PRESENT OR ADDED TO ACTIVATE THE FUNCTION
THE PIN MAY BE USED FOR TEST PURPOSES.
THERE IS NO EXÏERNAL CONNECTION.
CONFIDENTIAL AND PROPRIETARY TO NAT LTD.
Dwc. No. PTA12\500\405-0
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DESIGNED SRK
DRAWN MWS srrat NORTHERN ATRBoRNE TECHNOT0GY rTD.
DATE N,lI
255
CHECKED {AT
205
TLE POTS TELEPHONE ADAPTER
WITH NVIS DISPLAY
APPROVED 114 SIZE
ACAGE CODE
3AB01 PART NO. PTAl 2-300 REV
100 SHEET
2/5
F|LE 405-0.DWG DWG. TYPE INÏERCONNECT
PTAl 2-300
POTS TELEPHONE
ADAPTER J1 01 P1 01
25 PIN FEMALE D-MIN
MATING CONNECTOR 20 AWG +28 VDC POWER
AA/C GROUND
+28 VDC LIGHTS
LIGHTS GROUND
RTNGER OrU*r*.'O.O* /\
=
A
A
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RINGER DRIVE
SHIELD
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RINGER AUDIO LO
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The document reference is online, please check the correspondence between the online documentation and the printed version.

DESIGNED SRK
DRAWN MW5 Snat NoRTHERN ATRBoRNE TECHNorocy LTD
MÅY ¡¡./¡5
DATE NAI
255
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HOOK ANNUNCIATOR
CONFIDENTIAL AND PROPRIETARY TO NAT LTD
DWc. No. PTA12\Joo\4os-2
The document reference is online, please check the correspondence between the online documentation and the printed version.

DESIGNED SRK
DRAWN MWS srrat NORTHERN AIRBORNE TECHNOL0GY LTD.
Y
DATE
CHECKED NAT
205 NA
251
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PHONES LO
SHIELD
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RESERVED
KEY OUT
TIP
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MIC LO
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DWG. No. PTA12\300\403-5
The document reference is online, please check the correspondence between the online documentation and the printed version.

DESIGNED SRK
DRAWN MTVS Srrat NoRTHERN AIRBoRNE TECHNoLocv LTD
M
DATE
CHE '^'t )NAT
255
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05
TITLE POTS TELEPHONE ADAPTER WITH NVIS
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APPROVED )SIZE
ACAGE CODE 3AB01 PART NO. PTA12-300 REV.
1.00 SHEET
5/5
PTAl 2-500
POTS TELEPHONE
ADAPTER J1 01 P1 01
25 PIN FEMALE D_MIN
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18
17
21
23
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+28 VDC POWER
POWER GROUND
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RINGER AUDIO LO
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PHONES LO
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The document reference is online, please check the correspondence between the online documentation and the printed version.

DESIGNED SRK
DRAWN MWS $:rræ NORTHERN AIRBORNE TECHNOI0GY rrD.
DATE MAY 18l0s TITLE POTS ÏELEPHONE ADAPTER
WITH NVIS DISPLAY
CHECKED NAT
255
APPROVED NAN
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SIZE
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NOTES:
1. THIS DRAWING APPLIES TO THE FOLLOWING MODELS:
PTA12-300
CONFIDENTIAL AND PROPRIETARY TO NAT LTD.
5
at 6
at
l,
18 l,
't9
DWG. No. PTA12\300\405-0
The document reference is online, please check the correspondence between the online documentation and the printed version.