Avtech CSD-714 Selcal Manuale utente
Avtech Corporation
3400 Wallingford Ave. North
Seattle, WA 98103-9041
www.avtcorp.com
Tel (206) 695-8000
Fax (206) 695-8011
An Aviation Technologies Company
INSTALLATION MANUAL
CSD-714 SELCAL
DECODER
123-21-01
Seattle, WA USA Rev 1 June 1995
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THIS DATA IS PROPRIETARY TO AVTECH CORP. DISCLOSURE,
REPRODUCTION, OR USE OF THIS DATA FOR ANY PURPOSE IS
NOT AUTHORIZED WITHOUT WRITTEN PERMISSION FROM
AVTECH CORP.
File Last Saved: April 16, 2001 (3:20PM)
CSD-714 SELCAL
INSTALLATION AND
OPERATION MANUAL
Avtech Part Numbers 1200008-000, -001, -002, & -003
MANUAL PART NUMBER
0200013-000
Avtech Corporation
A DAH Company
3400 Wallingford Avenue North
Seattle, Washington USA 98103-9095
Phone 206-695-8000
Fax 206-695-8011
CHANGE RECORD
REV PAGE DESCRIPTION APPROVED
CSD-714 Installation and Operation Manual
123-21-01
June 1995
Seattle, WA USA Rev 1 Page I
1All Cloned from Coltech document 0200013-000 Rev C. All textual
references to Coltech and formatting has been changed to Avtech
where possible. This component maintenance manual may contain
references to Coltech drawings and document numbers.
REF DCR D010021
CSD-714 Installation and Operation Manual
123-21-01
June 1995
Seattle, WA USA Rev 1 Page II
SERVICE BULLETIN RECORD
Service Date Model
Bulletin Issued Effected Subject
CSD-714 Installation and Operation Manual
123-21-01
June 1995
Seattle, WA USA Rev 1 Page III
LIST OF EFFECTIVE PAGES
Section Page Date
CSD-714 Installation and Operation Manual
123-21-01
June 1995
Seattle, WA USA Rev 1 Page IV
TABLE OF CONTENTS
TITLE PAGE
DESCRIPTION .............................................................. 1
OPERATION ................................................................ 2
SPECIFICATIONS ........................................................... 3
INSTALLATION ............................................................. 5
INSTALLATION TESTING ................................................... 6
EQUIPMENT AND ACCESSORY PART NUMBERS .............................. 6
NOTES FOR INSTALLATION FIGURES ....................................... 7
LIST OF FIGURES
FIGURE TITLE PAGE
Figure 1 - Wiring Diagram ..................................................... 10
Figure 2 - Outline Drawing ..................................................... 11
Figure 3 - Code Programming ................................................... 12
Figure 4 - 20 dB Attenuator .................................................... 13
Figure 5 - Annunciator Output Circuits ........................................... 14
CSD-714 Installation and Operation Manual
123-21-01
June 1995
Seattle, WA USA Rev 1 Page 1
DESCRIPTION
The CSD-714 SELCAL DECODER is a rack mounted, 16 tone decoder for the ICAO and ARINC
standard SELCAL system, as defined in RTCA paper DO-93. It is available in both two channel
(-001, -003) and five channel (-000, -002) versions. It has independent inputs for up to five
radios, depending on version, to drive up to five decoder channels. It is connected to any
communication radio receivers (typically the VHF and HF receivers) and monitors their audio
outputs for the SELCAL tone codes. Upon receiving the code for which it is programmed it will
cause annunciator control line outputs to activate to alert the crew that a call has been received.
TSO'd to TSO C59 and designed to meet or exceed the performance requirements of ARINC
Characteristic 714, the CSD-714 uses proven aircraft techniques and materials and is digitally
based and crystal controlled using a microprocessor, digital filters and signal processing, and
digital frequency generation for its decoding functions. The entire unit is housed in a 1 MCU size
case as defined in ARINC characteristic 600 and is made entirely of aluminum which has been
anodized and painted for protection and appearance. The materials used within the unit are of the
high quality associated with air transport equipment and consideration has been given to the safety
and reliability requirements of air transport operations.
By grounding pins in the rear connector of the unit, either at the connector or by using a code
selector panel, the individual code assigned to the aircraft is programmed for the unit to recognize.
There are several output lines to control the annunciation of a decoded call. Up to five of the lines
are intended to activate lights to indicate which of the inputs received the call, and two of the lines
are used to determine whether the lights will be on steady or flash and to strobe a chime in the
aircraft audio system.
The decoder channels are individually reset by grounding the RESET input pins on the connector.
When all channels have been reset, the steady and interrupted annunciator output lines will be
deactivated. The reset lines are fully diode isolated and may be used with the individual radio
push-to-talk circuits for automatic reset upon transmission.
A Self-Test function is activated by grounding the SELF-TEST input on the connector and will
fully test the unit by generating audio tones internally and coupling them to the inputs of the unit.
CSD-714 Installation and Operation Manual
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June 1995
Seattle, WA USA Rev 1 Page 2
OPERATION
Pilot operation of the CSD-714 is limited to resetting it after a call and performing a self-test.
Normal Operation
There are several installation options concerning how the annunciator lamps and audio
annunciation work, as well as how the unit is reset after a call. The lamps may be connected to
either be on steady or to flash when a call is received, and the audio annunciator may either ring
once, ring repeatedly, or not at all. Resetting the unit may be accomplished via a single reset
button, one for each channel, or by selecting the associated radio and transmitting on it, causing its
push-to-talk circuitry to reset the SELCAL. The pilot should determine from the installation
agency what the normal SELCAL response should be to a call and how to reset the annunciators.
In any case, the receipt of a SELCAL call will illuminate only the annunciator lamp for the radio
which detected the call.
Manual SELF-TEST Operation
Generating a SELF-TEST is done by pressing the SELF-TEST button, if installed. Pushing and
releasing the SELF-TEST button initiates an internal sequence within the CSD-714 which tests the
unit completely. A fully functioning unit will complete the self-test within approximately four
seconds by indicating a SELCAL call has been detected on all channels at once. Should all
channels not test correctly, the annunciator light for the failed channel will not light. Should the
unit find that the code selection programmed into the unit is invalid, it will not light any of the
annunciators and will appear to have done nothing.
In the -000 and -002 versions the annunciator outputs resulting from a self-test remain active until
manually reset. In the -002 and -003 versions the annunciator outputs resulting from a self-test
remain active for approximately two seconds and then automatically reset.
Power On SELF-TEST Operation
When power is initially applied to the unit, if the code selection the unit is programmed for is
invalid the unit will light all annunciators and will flash and strobe the chime as appropriate and
will not respond to RESET input commands. In this case, the pilot should turn the unit off and
report it malfunctioning.
CSD-714 Installation and Operation Manual
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June 1995
Seattle, WA USA Rev 1 Page 3
SPECIFICATIONS
Model Number: CSD-714
Avtech Part Numbers: 1200008-000 (5 channel, standard self-test)
1200008-001 (2 channel, standard self-test)
1200008-002 (5 channel, auto-reset self-test)
1200008-003 (2 channel, auto-reset self-test)
Certified to TSO: C59
Conforms to RTCA Spec: DO-93 as amended.
RTCA DO-160B Categories: F2BA/MNO/XXXXXXZAAZZZZ
Software Certification: Software has been tested and documented per the requirements
of RTCA paper DO-178A for Level 3 software.
ARINC Characteristics: Complies with the performance, packaging and environmental
requirements of ARINC characteristic 714 and 600.
Number of Channels: Five (-000, -002)
Two (-001, -003)
Size: 1.12" wide, 7.63" high, 12.52" long, defined as 1 MCU by
ARINC 600.
Mounting: Aircraft racking per ARINC Characteristic 600.
Weight: 2.9 pounds
Operating Temperature: -55 degrees centigrade to +70 degrees centigrade continuous.
DO-160B Vibration: Categories MNO for non-vibration isolated mounting in
Helicopters and Fixed Wing turbojet and propeller driven
aircraft.
Operating Altitude: Up to 55,000 feet, non-pressurized.
Input Voltage: 20 to 35 VDC, 27.5 VDC nominal. Voltage below 18 VDC
will inhibit operation of annunciators and decoding.
Input Current: 170 ma nominal, 250 ma maximum
CSD-714 Installation and Operation Manual
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June 1995
Seattle, WA USA Rev 1 Page 4
Mating Connector: ARINC 600 style, size 1 with blank cavity A, Middle insert
Arrangement 01 (60 pins), Bottom insert Arrangement 03 (2
coax, 2 size 16 pins, 1 size 12 pin).
Tone Inputs: Two or five inputs, transformer coupled. Each input is
nominally 10,000 ohms input impedance.
Input Tone Level: 0.1 VMS to 3.2 VMS
Tone Frequency Tolerance: Normal operation with tones less than 0.3% off frequency.
Tone Rejection: Greater than 36 dB rejection to tones more than +/- 3.5 percent
off frequency.
Tone Amplitude Difference: Must be less than 10 dB.
(Twist)
Tone Duration: 750 milliseconds minimum, 1.25 seconds maximum
Tone to Noise Ratio: -6 dB minimum.
Tones Decoded: 16 ARINC standard SELCAL tones, labeled A, B, C, D, E, F,
G, H, J, K, L, M, P, Q, R, S.
Code Selection Method: Jumper wires in the installation harness or ARINC compatible
SELCAL selector panel.
ARINC Interfaces: NON-INTERRUPT and INTERRUPT lines, turned on per
ARINC 714 for chime and external annunciators. Maximum
off voltage, 80 VDC. Maximum on current, 2 amps.
Annunciator Interfaces: Two or five outputs which connect to LIGHTS IN pin when
associated channel is decoded. Maximum off voltage, 80
VDC. Maximum on current, 2 amps.
External Resets: Two or five inputs, normally open. Closure to ground will
reset associated channel annunciation.
Self-Test: Grounding SELF-TEST pin on connector will cause unit to
perform complete end-to-end self-test. Unit checks for valid
decode code strapping upon self-test.
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