DOCUMENT NUMBER 700-16-1 REVISION 1.10
EQUIPMENT MANUAL
Product Functional Specifications
and Installation Manual
DIGITAL AUDIO CONTROL AMPLIFIER
MODEL 700-[ ]
AND
ALL DETAIL PART NUMBERS
For Cobham Use Only
CONFIDENTIAL AND PROPRIETARY TO COBHAM
IMPORTANT NOTICE
Chelton Avionics Inc. doing business as
Wulfsberg Electronics Inc. doing business as
Cobham Avionics will be responsible for full
distribution and revisions of ICA's (Instructions
for Continued Airworthiness).
SEALED
2010.10.26
10:42:26
-07'00'
EQUIPMENT MANUAL 700-16-1 REV 1.10
700/700-16-1
CONFIDENTIAL AND PROPRIETARY TO COBHAM
Page a
CHANGE RECORD
DATE CHANGE CHECK APPROVAL
3-11-03
ORIGINAL DOCUMENT RELEASED
AP AP
4-13-05
REVISION A:
Throughout this document: NAT Seattle was
dB Systems. (Type IV)
Incorporated 700-008 to Table A. (Type IV)
SS AP
10-20-05
REVISION B:
Section 1.0: Added TSO installation limitation
statement.
Figure 3: Changed title to “generic”. Revised
Figure 3 drawing to show Model 80x Switch
Panels, 700-xxx Digital Audio Control
Amplifier, and 630-xxx Aural Warning
Generator.
(Type IV)
SF AP
11-1-05
REVISION C:
Table A:
700-008 MOD status was listed as No MOD
(typo). (Type IV)
SF ZHP
06-29-09
REVISION 1.04:
Incorp. ECR2 700-16. Added Model 700-009
to Table A. Updated NAT logo. Added
Confidential and Proprietary notice.
SC AP
SEE TITLE
PAGE
REVISION 1.10:
Incorporated ECR3 700-16. Updated Figure
1 to current rev. Cobham was NAT Seattle.
Added ICA responsibility notice to front
cover.
Geoff Melton
2010.10.06
14:26:32 -07'00'
Edward
Uy
2010.10
.11
12:24:3
7 -07'00'
Zack Pahlman
2010.10.25 13:49:30
-07'00'
EQUIPMENT MANUAL 700-16-1 REV 1.10
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TABLE OF CONTENTS
Page
MODEL 700 DETAIL PART NUMBER DESCRIPTIONS..........................................c
1.0 OPERATING INSTRUCTIONS AND EQUIPMENT LIMITATIONS.................1
2.0 SPECIFICATIONS.........................................................................................3
3.0 INSTALLATION PROCEDURES, WIRING DIAGRAMS,
AND LIMITATIONS........................................................................................6
3.1 PHYSICAL DESCRIPTION....................................................................6
3.2 ELECTRICAL DESCRIPTION...............................................................6
4.0 CALIBRATION AND MAINTENANCE PROCEDURES..................................7
Tables
Table A Detail Part Numbers....................................................................................c
Table 1 Pin Identification List, Numerical..................................................................7
Table 2 Environmental Qualification Form................................................................15
Figures
Figure 1 Outline, Model 700 and all detail part numbers...........................................8
Figure 2 Model 700 Wiring Diagram .........................................................................9
Figure 3 Typical Model 700 installation schematic....................................................12
Figure 4 Mounting Rack for Model 700, S-TEC P/N 628-7558-001...........................14
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MODEL 700 DETAIL PART NUMBER DESCIRIPTIONS
The detail part numbers associated with the Model 700 Digital Audio Control Amplifier may define
different level adjustments or test procedures than those outlined in dB Systems’ Document
Number 700-4 and this document. Table A describes those differences.
NOTE: A Model 700 with an associated detail part number is designated as a Model 700-XXX,
where XXX is the applicable detail part number.
Table A. Detail Part Numbers
Detail Part Number Description of Detail
Basemodel 700 Base model. MOD status C. Reference Appendix A.
001 DELETED
002 Physically and electrically identical to base Model 700;
designated for Learjet Model 60 levels. Levels no different than
those of base Model 700.
Throughout this document:
- Substitute "Model 700-002" in place of references to
"Model 700."
MOD status: B
003 Levels set for special mission Learjet 35 with 4-station
interphone.
Throughout this document:
- Substitute "Model 700-003" in place of references to
"Model 700."
MOD status: B
004 Levels set for special mission Hawker U125A with 6-station
interphone and customized receiver levels.
Throughout this document:
- Substitute "Model 700-004" in place of references to
"Model 700."
MOD status: C
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Table A. Detail Part Numbers (continued)
Detail Part Number Description of Detail
005 Physically and electrically identical to base Model 700;
designated for Raytheon Hawker 800XP. Levels no different
than those of base Model 700.
Throughout this document:
- Substitute "Model 700-005" in place of references to
"Model 700."
MOD status: D
006 Designated for Raytheon PFP3 King Air. Levels no different
than those of base Model 700. No difference in test procedure
Throughout this document:
- Substitute "Model 700-006" in place of references to
"Model 700."
MOD status: B
007 Calibrated for Raytheon Hawker 800XP
Throughout this document:
- Substitute "Model 700-007" in place of references to
"Model 700."
MOD status: C
008
Calibrated for Raytheon Premier 1.
Throughout this document:
- Substitute "Model 700-008" in place of references to
"Model 700."
MOD status: A
009
Calibrated for Raytheon Hawker 400XPI.
Throughout this document:
- Substitute "Model 700-009" in place of references to
"Model 700."
- Reference Appendix I.
MOD status: None
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Page 1
EQUPMENT MANUAL
MODEL 700-[ ]
1.0 OPERATING INSTRUCTIONS AND EQUIPMENT LIMITATIONS
This document makes references to dB Systems, Inc. and NAT Seattle, Inc. Please note that
dB Systems, Inc. and NAT Seattle, Inc. have been changed to Cobham. For all references to
dB Systems, Inc. or NAT Seattle, Inc. herein, substitute Cobham.
The conditions and tests required for TSO approval of this article are minimum performance
standards. It is the responsibility of those installing this article either on or within a specific type
or class of aircraft to determine that the aircraft installation conditions are within the TSO
standards. TSO articles must have separate approval for installation in an aircraft. The article
may be installed only if performed under 14 CFR part 43 or the applicable airworthiness
requirements.
The Model 700 Digital Audio Control Amplifier is a remotely controlled electronic unit that operates
upon digital signal command sent to it by the digital multiplexing unit or switch panel at its
respective audio control station. An example of such a switch panel would be Model 803. The
digital multiplexing unit or switch panel continuously reads the status of all audio control switches
and settings of potentiometers and compiles this information into the form of a digital signal. The
digital signal is sent to the Model 700 from the digital multiplexing unit or switch panel in RS-422
serial format via a twisted, shielded wire pair. The Model 700 receives and demultiplexes this
digital signal and converts it into useful audio control information.
The Model 700 is capable of switching and controlling the individual volume of up to 15 receiver
inputs. It also switches six sidetone inputs and an interphone line. In addition, four unswitched
and unmuted inputs are provided to accommodate an aural warning input and three auxiliary
inputs. Headphone and selected speaker outputs are isolated and a cockpit voice recorder (CVR)
output is a summation of the headphone and Hot microphone audio. The Hot microphone to CVR
audio channel is unswitched and unmuted, thus allowing Hot microphone audio to be recorded on
the cockpit voice recorder at all times. A pilot select COMM output is a summation of all selected
receiver inputs, excluding aural warning, auxiliary, sidetone, or interphone audio.
Receiver, sidetone, headphone, interphone and speaker audio, and all operating modes are
electronically switched and controlled by the digital signal information sent from the digital
multiplexing unit or switch panel. An electronic volume control attenuator is employed in each of
the 15 receiver audio input channels. Every receiver input attenuator has 25 dB of range and is
digitally controlled. Separate electronic volume control attenuators are provided for headphone
audio (35 dB range), speaker audio (35 dB range), sidetone audio (25 dB range), and interphone
audio (25 dB range). These volume control attenuators are also digitally controlled. Refer to the
applicable multiplexing unit or switch panel equipment manual for specific information on control
hardware required. Aural warning, auxiliary, CVR, and pilot select COMM audio channels do not
employ any individual electronic volume control attenuators; however, the volume of some CVR
audio is directly affected by the headphone volume control.
A voice activated switch (VAS or VOX) is incorporated in series with the Hot microphone input to
interphone channel. This feature allows Hot interphone operation without coupling of ambient
cockpit noise into the amplifier during times when the pilot is not talking. If the internal VAS pot
jumper is installed at the mating connector (see Figure 2, Wiring Diagram), then the threshold of
voice activation may be adjusted by an internal screwdriver adjustment through a hole in the cover
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labeled "VOX THLD." It is factory set at 100 millivolts and adjustable from 30 to 350 millivolts.
The VAS is not incorporated in series with the Hot microphone input to CVR output channel.
Selective voice or ident code filtering is provided on four of the receiver audio inputs, intended for
NAV and ADF audio. The filter function is also digitally controlled.
The speaker amplifier in the Model 700 is rated at 10 Watts into 4 ohms. This is a peak rating
intended for speech and music. The continuous rating of the amplifier is 1 Watt into 4 ohms for
sine wave operation. The speaker channel is powered through an internal fuse, separate from the
headphone channel, so that a severe failure of the speaker channel will not simultaneously
disable the headphone channel.
All outputs (including the headphone and speaker outputs) of the Model 700 are both open and
short circuit protected.
All internal screwdriver potentiometer adjustments of the Model 700 are set to factory standards.
Some adjustments can be made through access holes in the cover. If it is necessary to change a
setting, refer to Section II of this manual.
The amplifiers are adjusted for acceptable listening output levels into the proper loads with
receiver inputs of 7.75 volts RMS. This input level is realized when receivers are set for 100
milliwatts into 600 ohms. If 7.75 volts RMS is greatly exceeded at the inputs, the audio will
become distorted due to peak clipping and audio bleedthrough will be noticed. However, the
amplifiers will not be damaged. Input levels can vary with detail part number. Refer to ATP 700-4.
An important feature of the Model 700 is its two different emergency modes of operation. In the
first mode, when there is an interruption of supply power to the unit, the Model 700 will
automatically pass COMM-1 and COMM-1 sidetone audio through to the headphone output with
23 dB of attenuation into the 150-ohm headphone load. In the second mode of operation, when
there is no loss of supply power to the Model 700 but there is a loss of digital communications
between the digital multiplexing unit or switch panel and the Model 700, the Model 700
automatically turns ON COMM-1 and COMM-1 sidetone audio channels and turns OFF all other
receiver/sidetone inputs so that only COMM-1 communications can be heard on the headphone
output. During this mode of operation, headphone volume level is maintained at the same setting
realized immediately prior to loss of digital communications. Also, aural warning and auxiliary
audio is provided to the headphone and speaker outputs as normal. A loss of digital
communications can occur if the digital multiplexing unit or switch panel lose power or if the
twisted, shielded wire pair carrying digital information is somehow disconnected or severed.
Normal operating modes of the Model 700 are listed below and are established when the
appropriate digital multiplexing unit or switch panel digital signal is sent to the Model 700.
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Multiplexing Unit or
Switch Panel Control Function
Speaker switch Connects selected audio to the cockpit speaker.
INPH Hot switch Connects Hot microphone input to the interphone line if the
PTT switch is not selected.
INPH to speaker switch Usually used as a function of the Oxy MIC select mode -
connects interphone audio to cockpit speaker if speaker
switch is also selected.
INPH listen Connects interphone audio to headphone; PTT switch has
no effect to mute.
PTT switch Opens the Hot microphone to interphone channel and
mutes the speaker output receiver audio.
Voice switch Enables notch filter to reject ident tone and pass voice audio
from NAV and ADF audio inputs.
Ident switch Enables bandpass filter to emphasize ident tone and reject
voice audio from NAV and ADF audio inputs.
Receiver switches Connects selected receiver and sidetone audio to the
internal attenuating, mixing, filtering, and amplifying circuitry.
PA key Connects PA sidetone input to the headphones, CVR, and
cockpit speaker (if speaker switch is selected).
2.0 SPECIFICATIONS
The Model 700 is intended for aircraft with two cockpit audio stations. Two Model 700 amplifiers
are installed, one for each audio station. The receiver outputs are connected to both Model 700
receiver inputs. The receiver input impedance of the Model 700 is 2,000 ohms, so when the two
amplifiers are installed and each receiver is connected to both amplifier inputs in a parallel
fashion, the receiver sees 1,000 ohms. Input specifications are expressed in volts RMS, rather
than milliwatts, to avoid any misunderstanding.
INPUTS:
COMM: Five dual audio inputs for receiver and sidetone. Receiver input level is
7.75 V
RMS
and sidetone is 3.90 V
MRS
, both are switched simultaneously.
Input levels can vary with detail part number. Refer to ATP 700-4.
PA SDTN: This is a switched audio input intended for an audio sidetone signal
produced from MIC (PA) to cabin paging. Input level is 2.00 V
RMS
.
RCVR: Six single, switched audio inputs for MKR, DME, SPARE, etc. Input level is
7.75 V
RMS
. Input levels can vary with detail part number. Refer to ATP
700-4.
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FLTR: Four single, switched audio inputs for NAV, ADF, etc. 7.75 V
RMS
inputs have selective filtering, switched by the voice-both-ident switch
connected to the digital multiplexing unit or on the switch panel. Input levels
can vary with detail part number. Refer to ATP 700-4. The following
shows filter operation with the selected position of the switch:
Voice: 1,020 +5 Hz, 30 dB minimum 100 Hz notch.
Both: No filter; normal bandwidth operation.
Ident: 1,020 +5 Hz ident tone emphasis.
HOT MIC: The Hot microphone input, used for interphone mode and CVR microphone
recording, supplies microphone bias and is compatible with carbon and
amplified dynamic microphones. Microphone audio from this input is
channeled directly to the CVR output amplifier and is channeled through a
voice activated switch (VAS) to the interphone amplifier output. Voice
activation occurs within 1.5 milliseconds after speech begins. 30 dB
minimum attenuation from microphone input to interphone amplifier output
is provided within 2 seconds after speech is discontinued. The VAS feature
has an adjustable 30 to 350 millivolt microphone input threshold range,
controlled either internally or externally.
AUX: Three unswitched and unmuted auxiliary inputs, two factory set to
accommodate 1.00 V
RMS
, one factory set to accommodate 5.00 V
RMS
.
Potentiometer screwdriver adjustments accessible through holes in the
cover may be used to vary auxiliary and aural warning levels on either
speaker or headphone outputs. Input levels can vary with detail part
number. Refer to ATP 700-4.
AW: This is an unswitched and unmuted input intended for aural warning tones,
factory set to accommodate 1.00 V
RMS
, adjustable. Input levels can vary
with detail part number. Refer to ATP 700-4.
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OUTPUTS:
SPEAKER: The speaker amplifier is designed for speech signals and has both a rated
power and a continuous power specification. The continuous rating is the
power the amplifier can continuously deliver with a sine wave. The rated
power specification is the peak power it can deliver without clipping. Bench
testing and adjustment may require brief periods of sine wave operation
above the continuous rating; those periods should be limited to 1 minute to
prevent amplifier damage.
Load Rated Power Continuous Power
4 ohms 10 Watts 1 Watt
8 ohms 8 Watts 0.8 Watt
HEADPHONE: The headphone amplifier has a rated power specification of 107 milliwatts
into 150 ohms and a continuous power specification of 27 milliwatts into
150 ohms.
COCKPIT
VOICE
RECORDER: This output will deliver 1.5 milliwatts into 600 ohms continuously. Rated
and continuous power ratings are the same. The Hot microphone input
audio is channeled directly to the cockpit voice recorder output amplifier.
PILOT
SEL COMM: This output will deliver 1.5 milliwatts into 600 ohms continuously. Rated
and continuous power ratings are the same.
INTERPHONE: This output will deliver 1.5 milliwatts into 430 ohms continuously. Rated
and continuous power ratings are the same.
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VOLUME CONTROLS:
HEADPHONE: Controls level of all 15 receiver audio inputs and interphone audio to the
headphone and cockpit voice recorder outputs. Volume control range is 35
dB (minimum) controlled by a 1,000-ohm, 1/2-Watt, linear taper pot
connected to the digital multiplexing unit or on the switch panel. Maximum
volume is provided with maximum resistance.
SPEAKER: Controls level of all 15 receiver audio inputs and interphone audio to the
speaker output. Range and control same as headphone volume
specification.
RECEIVER: (One electronic attenuator per receiver input). Controls level of the
respective receiver audio input before subject to control of the headphone
or speaker volume controls. Volume control range is 25dB (minimum)
controlled by a 1,000-ohm, 1/2-Watt, linear taper pot connected to the
digital multiplexing unit or on the switch panel. Maximum volume is
provided with maximum resistance.
SIDETONE: Controls level of all six sidetone audio inputs to the speaker, headphone,
and cockpit voice recorder outputs. Range and control same as receiver
volume specification.
INTERPHONE: Controls level of interphone audio input to the speaker, headphone, and
cockpit voice recorder outputs. Range and control same as receiver
volume specification.
FREQUENCY RESPONSE: Flat within 3 dB from 350 Hz to 6,000 Hz.
HARMONIC DISTORTION: Less than 3 percent, all outputs.
ISOLATION BETWEEN CHANNELS: 60 dB minimum (90 dB Typical)
OUTPUT NOISE: Greater than 65 dB below rated power, all outputs.
POWER SUPPLY: 28 VDC, 1 ampere maximum. 2 to 5A circuit breaker recommended.
OPERATING TEMPERATURE: From -55 to +70 degrees C.
OPERATING ALTITUDE: To 70,000 feet.
TEST SPECIFICATION: Tested under environmental conditions and test procedures per RTCA
DO-160C and qualified to categories as listed in Table 2 of this manual. Software qualified to
Level 2 (essential) category in accordance with RTCA DO-178A.
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3.0 INSTALLATION PROCEDURES, WIRING DIAGRAMS, AND LIMITATIONS
3.1 PHYSICAL DESCRIPTION
Installation dimensions are shown on the Model 700 outline on Figure 1. The amplifier enclosure
is designed for installation in a S-TEC tray assembly part number 628-7558-001 (or equivalent).
The unit and tray assembly may be mounted in any position compatible with the tray assembly
because the unit fits into the tray assembly in only one position. If possible, it is recommended to
mount the unit and tray assembly so that the unit may be easily removed from the aircraft for
service or the level adjustment access holes on the unit are easily reached without removal of the
unit. No shock or vibration isolators are required for mounting.
The amplifier and the tray assembly may be mounted to a metal, plastic, or composite surface;
however, it is absolutely necessary to ground the tray assembly to the metal aircraft ground
structure, thus grounding the enclosure of the amplifier when mounted into the tray assembly.
When mounting to a plastic or composite surface, use a grounding strap. The amplifier enclosure
is finished with an electrically conductive film. It is not necessary to remove the film for electrical
bonding to the tray assembly.
3.2 ELECTRICAL DESCRIPTION
Connections to the amplifier are made through one "D" subminiature connector. The mating
connector, manufactured by Positronic Industries, Inc., has a part number for the complete
latching connector assembly. The part number is as follows:
Amplifier Connector Positronics Mating Connector Part No.
P1 (62 pin) DD62F10JVLO
Numerical pin identification is shown in Table 1 and the wiring diagram is shown on Figure 2.
Shielded wire must be used where indicated on the diagrams. AWG 24-26 size wire should be
used for all connections except those to the input supply power, power ground, chassis ground
and speaker amplifier output, where AWG 20-22 size should be used at pins 22, 50, 51, 53, and
54 of P1.
The power return lead (pin 54) should be a maximum of 1 meter in length. It is also
recommended that pin 26 (AUX/AW Audio Comm.) be grounded at the same location as the
power return lead.
The only control connections made to the Model 700 are those for either internal or external Voice
activated switch control and the digital multiplexed data lines from the digital multiplexing unit or
switch panel (A generic 800 series switch panel is depicted in the wiring diagram, Figure 2). All
other connections to the Model 700 are strictly either power and grounds or audio inputs and
outputs as shown on Figure 2 of this manual. Refer to the applicable multiplexing unit or switch
panel equipment manual for specific information on all other control connections required.
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Table 1. Pin Identification List, Numerical
(P1 - 62-pin connector)
PIN NAME
P1-1 CVR HI
P1-2 HDPH HI
P1-3 Emergency Switch
P1-4 COMM-5 HI
P1-5 SPARE-2 HI
P1-6 SPARE-1 HI
P1-7 COMM-4 HI
P1-8 COMM-3 HI
P1-9 MKR-2 HI
P1-10 MKR-1 HI
P1-11 COMM-1 SDTN HI
P1-12 COMM-1 HI
P1-13 COMM-2 HI
P1-14 DME-2 HI
P1-15 DME-1 HI
P1-16 COMM-5 SDTN HI
P1-17 COMM-2 SDTN HI
P1-18 COMM-4 SDTN HI
P1-19 COMM-3 SDTN HI
P1-20 PA SDTN HI
P1-21 NAV-2 HI
P1-22 Chassis Ground
P1-23 Pilot Select COMM LO
P1-24 CVR LO
P1-25 HDPH LO
P1-26 AUDIO COMMON
P1-27 COMM-5, COMM-5 SDTN LO
P1-28 SPARE-2 LO
P1-29 SPARE-1 LO
P1-30 COMM-4, COMM-4 SDTN LO
P1-31 COMM-3, COMM-3 SDTN LO
PIN NAME
P1-32 MKR-2 LO
P1-33 MKR-1 LO
P1-34 COMM-1, COMM-1 SDTN LO
P1-35 COMM-2, COMM-2 SDTN LO
P1-36 DME-2 LO
P1-37 ADF-2 LO
P1-38 NAV-1 LO
P1-39 ADF-1 LO
P1-40 NAV-2 LO
P1-41 ADF-2 HI
P1-42 NAV-1 HI
P1-43 Pilot Select COMM HI
P1-44 INPH HI
P1-45 INPH HI
P1-46 INPH Squelch (VOX Threshold)
P1-47 HOT MIC HI
P1-48 HOT MIC LO
P1-49 Emergency 28 VDC
P1-50 28 VDC
P1-51 SPKR LO
P1-52 Internal INPH VOX Threshold Pot
P1-53 SPKR HI
P1-54 Power Ground
P1-55 MUX Data LO
P1-56 MUX Data HI
P1-57 DME-1 LO
P1-58 AUX-3 HI
P1-59 AUX-2 HI
P1-60 AUX-1 HI
P1-61 AURAL WARNING HI
P1-62 ADF-1 HI
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4.0 CALIBRATION AND MAINTENANCE PROCEDURES
Calibration procedures are included in Document No. 700-4, Acceptance Test Procedure.
No scheduled maintenance is required for the Model 700-[ ]. Assembly drawings, parts lists, and
schematics are included in this manual for use during troubleshooting and repair.
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SPKR
VOX THLD
SPKR MUTE
AW/AUX
HDPH
CVR
AW/AUX
COMM
PLT SEL
FILTER
10.450
5.100
1.130
VERIFY PROPER PIN ALIGNMENT
WHEN INSTALLING CONNECTOR
CAUTION
Figure 1. Outline
Drawing
NOTE: The detail part
number is stamped into
the detail block on the
nameplate
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POWER RETURN.
20-22 AWG MIN.
MAXIMUM LENGTH
1 METER.
HAND MIC PTT IN
YOKE PTT IN
TO HAND MIC JACK TIP
(KEY GND)
PTT KEY SW (YOKE)
OPTIONAL EXTERNAL
VOX THRESHOLD POT
(pins P1-46 and P1-52
not connected)
CW
10 KOHM
P1-44/45INPH HI
COPILOT MODEL 700
INTERNAL INPH VOX THLD ADJUST
INPH SQUELCH (VOX THRESHOLD)
P1-52
P1-46
P1-44/45 INPH HI
ACCESS HOLE LABELED "VOX THLD"
LO
HI
LO
HI
LO
HI
HAND
MIC
OXY
MIC
NORM
MIC
MODEL 8XX
SWITCH PANEL
MUX DATA OUT
HOT MIC OUT
MICS IN
MUX DATA IN LO
MUX DATA IN HI
P1-55
P1-56
HOT MIC LOP1-48
P1-47 HOT MIC HI
EMERGENCY
NORMAL
P1-3
P1-49
EMERGENCY MODE SWITCH
EMERGENCY 28 VDC (ISOLATED)
MODEL 700 AMPLIFIER
CHASSIS GROUNDP1-22
POWER GROUND
28 VDC POWER INPUT
P1-54
P1-50
5A
CIRCUIT BREAKER
POWER
SOURCE
28 VDC
(+)
(-)
HI
LO
HI
LO
Figure 2. Wiring Diagram
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NAV-2 LO
NAV-2 HI
P1-40
P1-21
MODEL 700 AMPLIFIER
VOICE / IDENT
FILTERED
INPUTS
P1-41
P1-37
ADF-2 HI
ADF-2 LO
ADF-1 LO
ADF-1 HI
P1-39
P1-62
NAV-1 LO
NAV-1 HI
P1-38
P1-42
P1-4
P1-27
P1-16
COMM-5 HI
COMM-5 & COMM-5 SDTN LO
COMM-5 SDTN HI
COMM-4 SDTN HI
COMM-4 & COMM-4 SDTN LO
COMM-4 HI
P1-18
P1-30
P1-7
P1-8
P1-31
P1-19
COMM-3 HI
COMM-3 & COMM-3 SDTN LO
COMM-3 SDTN HI
COMM-2 SDTN HI
COMM-2 & COMM-2 SDTN LO
COMM-2 HI
P1-17
P1-35
P1-13
P1-12
P1-34
P1-11
COMM-1 HI
COMM-1 & COMM-1 SDTN LO
COMM-1 SDTN HI
NAV-1
RCV'D AUDIO HI
AUDIO LO
AUDIO LO
RCV'D AUDIO HI
COMM-5 (XCVR 5)
TYPICAL RECEIVER CONNECTION
TRANCEIVER CONNECTIONS
XMT SIDETONE AUDIO
XMT SIDETONE AUDIO
AUDIO LO
RCV'D AUDIO HI
COMM-4 (HF 2)
COMM-3 (HF 1)
RCV'D AUDIO HI
AUDIO LO
XMT SIDETONE AUDIO
XMT SIDETONE AUDIO
AUDIO LO
RCV'D AUDIO HI
COMM-2 (VHF 2)
COMM-1 (VHF 1)
RCV'D AUDIO HI
AUDIO LO
XMT SIDETONE AUDIO
Figure 2. Wiring Diagram (continued)
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MODEL 700 AMPLIFIER
DME-1 LO
DME-1 HI
P1-57
P1-15
P1-14
P1-36
DME-2 HI
DME-2 LO
P1-9
P1-32
MKR-2 HI
MKR-2 LO
MKR-1 LO
MKR-1 HI
P1-33
P1-10
P1-6
P1-29
SPARE-1 HI
SPARE-1 LO
SPARE-2 LO
SPARE-2 HI
P1-28
P1-5
SEE TYPICAL
RECEIVER CONNECTION
(MLS-1)
(MLS-2)
P1-26 AUDIO COMMON
AURAL WARNING IN HIP1-61
P1-60
AUX 1 AUDIO SOURCE
AUX-1 IN HI
AUX-2 IN HI
AUX 2 AUDIO SOURCE
P1-59
P1-58 AUX-3 IN HI
P50-11/12AURAL WARNING OUT LO
AURAL WARNING OUT HI P50-22/23
MODEL 603 OR 630 AURAL WARNING
TONE GENERATOR
PILOT SEL COMM IN HI
PA SIDETONE OUT HI P50-35
P50-19
MODEL 240 OR 250 PASSENGER
SPEAKER AMPLIFIER
PILOT SELECT COMM OUT HIP1-43
PA SIDETONE IN HIP1-20
P1-23 PILOT SELECT COMM OUT LO
AUX 3 AUDIO SOURCE
COCKPIT VOICE RECORDER
INPUT HI
INPUT LO
P1-1
P1-24
CVR OUT HI
CVR OUT LO
NC
OUTPUT HI
OUTPUT LO
OUTPUT LO
OUTPUT HI
OUTPUT HI
OUTPUT LO
HEADPHONE
150-600 OHMS
COCKPIT SPEAKER
4-8 OHMS
P1-2
P1-25
P1-53
P1-51
HDPH OUT HI
HDPH OUT LO
SPKR OUT HI
SPKR OUT LO
NOTE:
AUX/AW AUD. COMM.
GROUND TO SAME
LOCATION AS POWER
RETURN.
1 METER MAX.
Figure 2. Wiring Diagram (continued)
Figure 3. Generic Model 700-[ ] Installation Wiring Diagram
(Sheet 1) EQUIPMENT MANUAL 700-16-1
700/700-16-1
CONFIDENTIAL AND PROPRIETARY TO COBHAM
Page 14
Figure 3. Generic Model 700-[ ] Installation Wiring Diagram
(Sheet 2) EQUIPMENT MANUAL 700-16-1
700/700-16-1
CONFIDENTIAL AND PROPRIETARY TO COBHAM
Page 15
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