Technisonic Industries Limited TDAP-611 User manual

TDAP-611
AUDIO PANEL
Installation Instructions
TiL Document No. 15RE552
Rev. N C
Issue 2
MAY 2016
Technisonic Industries Limited
240 Traders Boulevard, Mississauga, Ontario L4Z 1W7
Tel: [phone] Fax: [phone]
www.til.ca
Copyright by Technisonic Industries Limited. All rights reserved.

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REVISION HISTORY
[ 1 RE 2 ]
For the most current revision of this document, please check the Technisonic website: www.til.ca
REV SECTION
- PAGE - DESCRIPTION DATE EDITED BY
N/C Original document release. May 04, 2016 A.L.
Issue 1 Added installation information to Section 2.3. Jul. 14, 2017 A.L.
8-1 Renumbered Sections 2.6-2.14.
Issue 2 1 Sections 1.1 & 1.2 are clarified. Apr. 16, 2018 A.L.
1 Added a new Section 1.3: Model Variation &
renumbered accordingly.

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ESD CAUTION
This unit contains static sensitive devices. Wear a grounded wrist strap and/or conductive gloves
when handling printed circuit boards.
WARNING AND DISCLAIMER
Changes or modifications not expressly approved by Technisonic Industries could void the user’s
authority to operate the equipment.
This manual is designed to provide information about the TDAP-611. Every effort has been made to make
this manual as complete and accurate as possible.
WARRANTY INFORMATION
The Model TDAP-611 Audio Panel is under warranty for one year from date of purchase. Failed units
caused by defective parts or workmanship should be returned to:
Technisonic Industries Limited
240 Traders Boulevard
Mississauga, Ontario L4Z 1W7
Tel: (90 ) 890-2113
Fax: (90 ) 890- 338
NOTES

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SUMMARY OF DO-160G ENVIRONMENTAL TESTING
Summary of DO-160G Environmental Testing for the Technisonic Model TDAP-611 Audio Panel:
Conditions Paragraph Category
Temperature and Altitude 4.0 A2, B2, D1
Temperature Variation .0 B
Humidity 6.0 A
Operational Shocks and Crash Safety 7.0 B
Vibration: Sinusoidal Profile M
Random Profile B
Sine-on-random Profile G
8.0 S, U
Magnetic Effect 1 .0 Z
Power Input 16.0 B
Voltage Spike 17.0 B
Audio Frequency Susceptibility 18.0 B
Induced Signal Susceptibility 19.0 ACE
Radio Frequency Susceptibility 20.0 T
Emission of Radio Frequency Energy 21.0 M
Lightning Induced Transient Susceptibility 22.0 A3E3XX
Electrostatic Discharge 2 .0 A
Fire, Flammability 26.0 C

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SECTION
TITLE
PAGE
1 GENERAL DESCRIPTION B
1.1 INTRODUCTION ............................................................................................................ 1
1.2 DESCRIPTION ............................................................................................................... 1
1.3 MODEL VARIATION ...................................................................................................... 1
1.4 TECHNICAL CHARACTERISTICS ................................................................................ 2
1. SYSTEM LIMITATIONS ................................................................................................. 3
1. .1 POWER LIMITATIONS ................................................................................................. 3
1. .2 FREQUENCY RESPONSE LIMITATIONS .................................................................. 3
1. .3 CROSSTALK LIMITATIONS ........................................................................................ 3
1. .4 TRANSMISSION PRIORITY ........................................................................................ 3
1. . INDUCED SIGNAL SUSCEPTIBILITY, RF SUSCEPTIBILITY, AND RF EMISSION ...... 3
2 INSTALLATION INSTRUCTIONS B
2.1 GENERAL ......................................................................................................................
2.2 EQUIPMENT PACKING LOG ........................................................................................
2.3 INSTALLATION ..............................................................................................................
2.4 INSTALLATION KIT – CONTENTS ...............................................................................
2. WIRING REQUIREMENTS ............................................................................................ 6
2.6 TDAP-611 AUDIO PANEL INSTALLATION ................................................................... 6
2.6.1 CABLE CLEARANCE ................................................................................................... 6
2.6.2 SHIELD GROUNDS ..................................................................................................... 6
2.7 INSTALLATION – PIN LOCATIONS AND CONNECTIONS ......................................... 8
2.8 HEADPHONE INSTALLATION ...................................................................................... 11
2.9 MICROPHONE INSTALLATION .................................................................................... 11
2.10 PTT CONNECTIONS ..................................................................................................... 11
2.11 MAIN POWER +28 V
DC
.................................................................................................. 11
2.12 BACKLIGHTING POWER +28 V
DC
OR + V
DC
.............................................................. 11
2.13 STORAGE ...................................................................................................................... 11
2.14 POST-INSTALLATION ADJUSTMENTS ....................................................................... 1
APPENDIX A Support Notes .......................................................................................... 17
WARRANTY ................................................................................................................... 18
TABLE OF CONTENTS

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FIGURE
TITLE
PAGE
1 Outline Drawing .............................................................................................................. 7
2 TDAP-611 Rear Connectors .......................................................................................... 8
3 Wiring Connections for Communication Transceivers ................................................... 12
4 Wiring Connections for Navigation Receivers, Power, and Configurations .................... 13
Wiring Connections for User Interfaces ......................................................................... 14
6 Top Cover Post-Installation Adjustment Locations ......................................................... 1
7 Bottom Cover Post-Installation Adjustment Locations ................................................... 16
TABLE
TITLE
PAGE
1 TDAP-611 General Specifications ................................................................................. 2
2 Bottom Connector - J101 ( 0 Pin D Connections) - Use FEMALE Connector .............. 8
3 Bottom Connector – J202 (1 Pin D Connections) - Use MALE Connector .................. 9
4 Top Connector – J201 (37 Pin D Connections) - Use FEMALE Connector .................. 9
Top Connector – J102 (1 Pin D Connections) - Use FEMALE Connector .................. 10
LIST OF FIGURES
LIST OF TABLES

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1.1 INTRODUCTION
This publication provides operating information for the TDAP-611 Audio Panel. The TDAP-611 is
only available with Night Vision Goggle (NVG) optimized panel lighting.
1.2 DESCRIPTION
The Technisonic Digital Audio Panel (TDAP) Audio Management System TDAP-611 is a panel
mounted Digital Audio System that provides centralized control and management for all audio
signals within the airframe for up to 7 distinct Users (Pilot, Co-pilot, and five passengers) with
varying degrees of connectivity depending on their station.
The TDAP-611 connects to all aircraft Transceivers (up to a maximum of 8 distinct Transceiver
Inputs), Navigational Receivers (up to a maximum of 8 distinct Receiver Inputs), Externally
Alerting Sirens, and User Headsets. The unit includes functionality allowing expansion to an
external PA or Paging system; it also supports full Simulcast transmitting as well as Monitor Only
functionality amongst all connected Transceivers.
To reduce pilot workload and avoid operational problems, ACCESS/D™ systems have auto-RX
switching when a transmitter is selected. The TDAP-611 has front panel selectable and
adjustable VOX, LIVE, or KEYED intercom (ICS) functions.
An EMERGENCY mode locking toggle provides "straight through" or “fail-passive” transmit and
receive audio for the pilot or other user on a pre-set radio.
In the NORMAL position (front panel LED is green), the pilot's audio is provided as selected by all
of the panel controls and is part of the ICS system. Separate RX and ICS volume controls are
provided on the panel along with an ICS VOX threshold control.
1.3 MODEL VARIATION
There is no model variation. The TDAP-611 is only available with Night Vision Goggle (NVG)
optimized panel lighting.
SECTION 1: GENERAL DESCRIPTION

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1.4 TECHNICAL CHARACTERISTICS
TDAP-611 GENERAL SPECIFICATIONS
MODEL TDAP-611 - ACCESS A Audio Controller:
PHYSICAL CHARACTERISTICS:
Width (max.) ........................................................................................................................ .73 inches
Height (max.) ...................................................................................................................... 2.24 inches
Depth (behind panel) .......................................................................................................... 4. 9 inches
Weight ...................................................................................................................... 2.23 lbs. (1.01 Kg)
Mounting .................................................................................................... Standard Dzus, 4 fasteners
POWER SOURCE REQUIREMENTS:
DC Voltage (MIN, TYPICAL, MAX) ........................................................................ 1 .0 V, 28 V, 32.2 V
(System performance will be degraded at upper and lower limits)
DC Current ................................................................................................................................... < 1 A
Backlighting Input:
High Level Backlighting Voltage ................................................................. 0-28 V
DC
@ 20 mA Max.
Low Level Backlighting Voltage ..................................................................... 0- V
DC
@ 20 mA Max.
TECHNICAL CHARACTERISTICS:
Input Impedance (Normal Mode, any RX input) ......................................................... k1 Ω (approx.)
Headset Channel Output Impedance .......................................................................................... 30 Ω
H/S Audio Power Output ........................................................................... At least 2 0 mW into 1 0 Ω
Speaker Power Output ..................................................................................... At least 2. W into 8 Ω
Audio Distortion (Speaker or H/S) ......................... Less than 2% THD @ 1 kHz at total rated output
Audio Frequency Response (ICS) ............................................. Within 3 dB from 300 Hz to 6000 Hz
Audio Frequency Response (RX & NAV) .................................. Within 3 dB from 300 Hz to 3000 Hz
Hum and Noise Level ..................................................................... Better than -60 dB below 00 mW
Input to Input Isolation .................................................................... Better than -70 dB between inputs
Deselected Input Isolation ....................................................................................... better than -6 dB
ENVIRONMENTAL:
Temperature (Operating) .................................................................................. -4 °C to +70° Celsius
Temperature (Survival Non-Operating) ............................................................ - °C to +8 ° Celsius
Humidity ............................................................................................................. 9 % Non-condensing
Shock ............................................................................................................................. 12 g (any axis)
Altitude ................................................................................................................................. 1 ,000 feet
TABLE 1: TDAP-611 General Specifications

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1.5 SYSTEM LIMITATIONS
A summary of the relevant system limitations is given below.
1.5.1 POWER LIMITATIONS
With Standard Set-up, which consists of seven headsets connected, a power output of not less
than 2 0 mW is delivered per headset (as represented by 1 0 ohms).
Nominal microphone input: 2 0 mV
rms
; Nominal Communications/Navigational Input: 2. V
rms
.
1.5.2 FREQUENCY RESPONSE LIMITATIONS
In accordance with the provisions made in RTCA/DO-214 Sections 2.8.1 and 1. .1, the
communications transmit out and receiver channels (communications and navigational) possess
an effective bandwidth of 300 Hz – 3000 Hz with a maximum amplitude variation of 3 dB within
the frequency range.
1.5.3 CROSSTALK LIMITATIONS
To ensure that the crosstalk specifications are in accordance with the applicable sections of
DO-214, it is essential that
1) Manufacturer’s maximum microphone input voltage of -4.7 dBu must not be
exceeded in order to avoid jeopardising input to microphone output crosstalk results,
particularly at the low frequency end.
2) In the instance where only two access units are daisy chained via their ICS tie-lines,
a resistor of not greater than 600 ohms must be maintained across the ICS tie-line in
order to avoid jeopardising station to station crosstalk results in RX mode at the high
frequency end.
When multiple transceivers are selected for simulcast operation, they are bound together at the
station output; thus, they are also bound together for other stations as well and defeat crosstalk
measurements. All measurements are based on single transceiver TX selection.
1.5.4 TRANSMISSION PRIORITY
Where Pilot and Co-pilot transmit simultaneously, the Pilot transmissions take precedence over
those of the Co-pilot. Co-pilot transmissions in this case would be rendered inactive.
1.5.5 INDUCED SIGNAL SUSCEPTIBILITY, RF SUSCEPTIBILITY, AND RF EMISSION
The wiring connections called out in Chapter 2 describe shield terminations for minimum ground
loop noise. The test harnesses used for RTCA/DO-160 Sections 19, 20, and 21 – Induced Signal
Susceptibility, RF Susceptibility, and Emission of RF Energy respectively – used shield
terminations at both ends of the cable. Should RF susceptibility pose a problem in a particular
installation, the installer may wish to try terminating shields at both ends of the cable. If this does
not produce satisfactory results, then double shielding may be required.

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2.1 GENERAL
This section contains information and instructions for the correct installation of the TDAP-611
Audio Panel.
Make certain that the unit is correctly operating in accordance with the equipment user's
requirements and manufacturer’s specifications, prior to releasing the equipment for service.
2.2 EQUIPMENT PACKING LOG
Unpack the equipment and check for any damage that may have occurred during transit. Save
the original shipping container for returns due to damage or warranty claims. Check that each
item on the packing slip has been shipped in the container.
2.3 INSTALLATION
The TDAP-611 Audio Panel is designed to be Dzus mounted and should be installed in
conjunction with an IN-TDAP611 installation kit. See Figure 1 for an outline drawing of the unit
with dimensions to facilitate the installation.
• For aircraft approved for Single Pilot IFR operations, the VHF Radio that is connected to
the emergency bus, and must remain available during emergency procedures, must be
interfaced to the No. 1 Transceiver Input channel of the audio panel.
• For aircraft where the minimum crew is more than one pilot, an audio panel must be
installed at each required pilot station. The respective pilot’s onside VHF Radio must be
connected to No. 1 Transceiver Input channel of his/her audio panel.
• All external aural warning systems that are required to remain available to the flight crew,
during emergency conditions or after a normal functional failure of the audio panel, must
be connected to the “Direct Alert Input” channel of the audio panel.
2.4 INSTALLATION KIT – CONTENTS
The IN-TDAP611 installation kit (P/N 1 9639) consists of:
1. One 0 Pin Cannon D mating connector (female) complete with crimp pins and hood.
2. One 37 Pin Cannon D mating connector (female) complete with crimp pins and hood.
3. One 1 Pin HD Cannon D mating connector (female) complete with crimp pins and hood.
4. One 1 Pin HD Cannon D mating connector (male) complete with crimp pins and hood.
SECTION 2: INSTALLATION INSTRUCTIONS

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2.5 WIRING REQUIREMENTS
Airframe wiring should be either:
1) Single conductor in accordance with MIL-W-227 9 or multi-conductor in accordance with MIL-C-27 00
2) Raychem 44 (81044) or single or multi-conductor and shielded wire.
Heat shrink solder sleeves (such as Raychem or equivalent) should be utilized for shield termination.
All microphone audio input and output line connections should be made with 2 conductor, twisted
pair shielded cables as illustrated in Figures 3 to . Receiver audio input lines should also be 2
conductor, twisted pair shielded cables. The power and ground lines should be a minimum of #22
AWG (#20 preferred). Keying and all audio lines may be #24 AWG or larger.
NOTE: Do not bundle any low level audio lines with RF coaxial cables, 60 Hz or 400 Hz AC
inverter, or motor, pump, or blower wiring, which can cause noise coupling between the
various systems, especially during RF transmission or pump/blower mechanical
operation. Maintain as much distance as possible from these types of wire bundles.
Note that there is really no effective field-installable shielding for magnetic coupling
(which occurs at high currents), and the only suitable prevention for this type of
interference is distance between the interfering lines. Shielded wiring is effective only for
electrostatic coupling or voltage driven interference.
2.6 TDAP-611 AUDIO PANEL INSTALLATION
2.6.1 CABLE CLEARANCE
Allow at least 2. ” of additional rear clearance for mating connectors and hoods (side routing) or
3.0” (back routing). Cables should be long enough to permit the unit to be removed from the
panel and the connectors to be easily disengaged. DO NOT dress or strap the mating cables so
that front removal is impossible or the unit cannot be removed for service or adjustment in the
field.
2.6.2 SHIELD GROUNDS
Convenient shield ground connections are provided at each connector for the indicated input
signal shield drains and will give the shortest possible return for these lines. These shield lines
should be daisy chained together and a single wire from each cable brought out to the designated
connector pin.

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4.94
4.8
4. 9
2.24
.73
FIGURE 1: Outline Drawing for Model TDAP-611
”
”
”
”
”

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2.7 INSTALLATION – PIN LOCATIONS AND CONNECTIONS
FIGURE 2: TDAP-611 Rear Connectors
J101 – POWER, MICS & KEYS Connector Pin Assignments
LO HI KEY Connection Notes
34 17 +28 V
DC
Power In Main Power Input
40 23 6 Pilot’s Mic In
9 Pilot’s ICS Key Active when grounded
41 24 7 Co-Pilot’s Mic In
26 Co-Pilot’s ICS Key Active when grounded
42 2 8 Hand Mic In Emergency Hand Mic
3 18 PAX 1 Mic In
36 19 PAX 2 Mic In
37 20 PAX 3 Mic In
38 21 PAX 4 Mic In
39 22 PAX Mic In
4 PAX ICS Key
1 3 Backlighting Power Input
2 Lighting 28 V / V Select Open: 28 V Backlighting
Ground: V Backlighting
Speaker Volume Control 10K Pot: Speaker Volume
Ground: Speaker Disabled
44 27 10 COM 7 TX Mic Out
4 28 11 COM 6 TX Mic Out
46 29 12 COM TX Mic Out
47 30 13 COM 4 TX Mic Out
48 31 14 COM 3 TX Mic Out
49 32 1 COM 2 TX Mic Out
0 33 16 COM 1 TX Mic Out
43 Shield ground for mic lines
TABLE 2: Bottom Connector - J101 ( 0 Pin D Connections) - Use FEMALE Connector

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J202 – HEADSETS CONNECTOR PIN ASSIGNMENTS
LO HI Connection Notes
9 1 Pilot’s H/S Audio
10 2 Direct Alert Connection
High level headset direct audio
(via resistive pad). Never connect
together between multiple units.
11 3 Co-Pilot’s H/S Audio
4 PAX 1 H/S Audio
PAX 2 H/S Audio
12 PAX 3 H/S Audio
13 PAX 4 H/S Audio
6 PAX H/S Audio
14 PAX H/S Common
1 7 Speaker Output 8 Ohms
8 Shield Ground
TABLE 3: Bottom Connector – J202 (1 Pin D Connections) - Use MALE Connector
The Pin 2/10 Direct Input is connected directly to the pilot’s H/S via a resistive pad and, if multiple units
use this connection to a common source, significant crosstalk will result. Connect ONLY ONE station in
this way to a single external source.
J201 – RX INPUTS, ICS TIES CONNECTOR PIN ASSIGNMENTS
LO HI Connection Notes
20 1 CREW ICS Tie ICS Tie Line Between Units
21 2 PAX ICS Tie ICS Tie Line Between Units
22 3 Direct Audio 1 Un-switched Direct Input
4 Shield Ground Shield drain for input lines.
23 NAV 8 RX Audio Mapped to NAV2 knob
24 6 NAV 7 RX Audio Mapped to NAV2 knob
2 7 Music Left Audio Mapped to MUSIC knob
26 8 Music Right Audio Mapped to MUSIC knob
27 9 NAV 4 RX Audio Mapped to NAV1 knob
28 10 NAV 3 RX Audio Mapped to NAV1 knob
29 11 NAV 2 RX Audio Mapped to NAV1 knob
30 12 NAV 1 RX Audio Mapped to NAV1 knob
31 13 COM 7 RX Audio
32 14 COM 6 RX Audio
33 1 COM RX Audio
34 16 COM 4 RX Audio
3 17 COM 3 RX Audio
36 18 COM 2 RX Audio
37 19 COM 1 RX Audio
TABLE 4: Top Connector – J201 (37 Pin D Connections) - Use FEMALE Connector

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J102 – ALERTS, PA CONNECTOR PIN ASSIGNMENTS
LO HI Connection Notes
9 1 Direct Audio 2 Un-switched Direct Input
11 3 PA Mic Out To External PA System
2 PA Key Output (Active Low) To External PA system
10 PA Power Key Output (Active Low)
To External PA system
Can be used to activate a remote
PA system.
12 4 COM 8 RX Audio
6 COM 8 TX Mic Out
7 COM 8 TX Key
8 PAX RX Enable Open: PAX receive no RX Audio
Ground: PAX receive RX Audio
13 Alert 3 (in) Two-Tone, Timed (Rad Alt DH) Active when grounded.
Accepts +28 V
DC
.
14 Alert 2 (in) Pulsing Tone (Low Rotor) Active when grounded.
Accepts +28 V
DC
.
1 Alert 1 (in) Steady Tone (Engine Fail) Active when grounded.
Accepts +28 V
DC
.
TABLE 5: Top Connector – J102 (1 Pin D Connections) - Use FEMALE Connector
Alerting is tone based with Alert 1 emitting a steady tone, Alert 2 a pulsing tone, and Alert 3 a two-tone,
timed signal.
Alert 2 has priority over Alert 1 if both are activated at the same time. Alert 3 has priority over Alert 2 and
Alert 1.

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2.8 HEADPHONE INSTALLATION
The TDAP-611 Audio Panel are intended for use with industry standard 1 0 ohm headphones.
In all cases, the headset lines should be run as shielded, twisted pairs, to avoid contamination
(and resulting crosstalk) of companion low level mic lines or audio input lines. Failure to follow
this wiring guideline will result in unwanted crosstalk and phantom audio that will appear to be
transmit or intercom related.
The use of high quality headsets and “carbon-equivalent” boom microphones, such as David
Clark or Bose, is strongly recommended. The use of headsets with individual volume controls is
very useful for passengers and allows level adjustment suitable to each position due to differing
headsets and the inevitable different hearing capability of individual users.
2.9 MICROPHONE INSTALLATION
All microphone connections to the TDAP-611 must be done with shielded cables. The inputs are
intended for use with standard “carbon-equivalent” or amplified dynamic microphones (such as
the D/C M1, M4 M7, etc.). Shielded, twisted pair routing is strongly preferred for lowest noise
pick-up, but single conductor shielded wiring generally gives adequate results in non-critical or
single box installations (although noise floor and crosstalk will increase).
2.10 PTT CONNECTIONS
The Pilot, Co-pilot, and hand microphones require a PTT (Push To Talk) button or switch to key
the transceivers as required. If a hand-held microphone is used, tie the PTT button to the
appropriate key line. If a boom microphone is incorporated into the headset, an external switch
(such as the cyclic switch or yoke switch) will be required to key the transmitter. PTT lines should
go directly to ground to activate the desired key function.
2.11 MAIN POWER +28 V
DC
The main power +28 V
DC
is connected to Pin 17 of the 0 pin (lower) "D" connector.
The main power ground is connected to Pin 34 of the 0 pin (lower) "D" connector.
As previously indicated, this connection should be made with at least #22 AWG wire, with #20
preferred. If from a very noisy source, with high levels of parasitic AC, shielding may improve
rejection of this coupled AC into other low level audio lines.
2.12 BACKLIGHTING POWER +28 V
DC
or +5 V
DC
The backlighting power is connected to Pin 3 of the 0 pin (lower) "D" connector.
The backlighting ground is connected to Pin 1 of the 0 pin (lower) "D" connector.
The backlighting input voltage level can be switched between a 0-28 V
DC
range of a 0- V
DC
through Pin 2 of the 0 pin (lower) "D" connector (Ground = V
DC
Backlighting).
Backlighting is NVG/ANVIS compatible (green).
2.13 STORAGE
When not in use, store the TDAP-611 in the original anti-static bag if possible and in a non-humid
place. Optimum storage temperatures for the best shelf life should not exceed +3 °C or be less
than -10°C.

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COM1
COM2
1
49COM2 MIC AUDIO LO
COM2 MIC AUDIO HI
COM2 MIC KEY
COM3
COM4
COM
COM6
COM4 MIC KEY
COM4 MIC AUDIO HI
COM3 MIC AUDIO HI
COM3 MIC KEY
13
47
30
14
31
48
COM6 MIC KEY
COM6 MIC AUDIO HI
COM MIC AUDIO HI
COM MIC KEY
11
4
28
12
29
46
27
44
10
COM7 MIC AUDIO HI
COM7 MIC KEY
COM4 MIC AUDIO LO
COM3 MIC AUDIO LO
COM6 MIC AUDIO LO
COM MIC AUDIO LO
COM7 MIC AUDIO LO
COM7
18
36COM2 AUDIO IN LO
COM2 AUDIO IN HI
COM3 AUDIO IN HI
COM3 AUDIO IN LO 3
17
34
14
13
31
32
1
33
16
COM AUDIO IN HI
COM AUDIO IN LO
COM6 AUDIO IN LO
COM6 AUDIO IN HI
COM7 AUDIO IN LO
COM7 AUDIO IN HI
COM4 AUDIO IN LO
COM4 AUDIO IN HI
COM8 AUDIO IN LO
COM8 AUDIO IN HI 4
12
COM8
19
37COM1 AUDIO IN LO
COM1 AUDIO IN HI
32
16
33
0
COM1 MIC KEY
COM1 MIC AUDIO HI
COM1 MIC AUDIO LO
P201
P101
P102
7
6
COM8 MIC AUDIO HI
COM8 MIC KEY
COM8 MIC AUDIO LO
RX
MIC
PTT
PTT
MIC
RX
PTT
MIC
RX
PTT
MIC
RX
PTT
MIC
RX
PTT
MIC
RX
PTT
MIC
RX
PTT
MIC
RX
43CHASSIS GROUND
P101
P201
P201
P201
P201
P201
P201
P101
P101
P101
P101
P101
P101
TDAP-611
FIGURE 3: Wiring Connections for Communication Transceivers