Wulfsberg Electronics Division CVC-151 VHF ATC Communication Transceiver User Manual 150 047012 D

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FINAL ASSEMBLY
REVISIONS
REV
DESCRIPTION
DATE
APPROVED
APPROVED
Initial Release per DCN W3749
6-18-04
V Wallace
J Markham
Revised per DCN W3905
Revised per DCN W4435
Revised per DCN W4917
12-23-04
4-30-04
12-21-05
V Wallace
V Wallace
V Wallace
J Markham
J Markham
Bob Evans
DWG. NO.
150-047012
REV
SH
APPLICATION
NEXT ASSEMBLY
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF WULFSBERG ELECTRONICS, A
CHELTON GROUP COMPANY, NEITHER RECEIPT NOR POSSESSION THEREOF CONFERS ANY RIGHT
TO REPRODUCE OR USE, OR DISCLOSE, IN WHOLE OR IN PART, ANY SUCH INFORMATION WITHOUT
WRITTEN AUTHORIZATION FROM WULFSBERG ELECTRONICS
APPROVALS
DATE
DRAWN
C Gregory
6-18-04
H Schnieder
6-18-04
J Markham
6-18-04
V Wallace
6-18-04
CHECKED
ENGINEER
ISSUED
Typed signatures indicate approval. Handwritten signature
approval of this document is on file at Wulfsberg Electronics,
Prescott, Arizona.
PILOT'S GUIDE, AVIONICS SYSTEMS,
FLITELINE ™
SIZE
CAGE CODE
A 1B7G3
SCALE: NONE
DWG NO.
REV
150-047012
DO NOT SCALE DRAWING
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
Table of Contents
INTRODUCTION....................................................................................................................................................4
FLITELINE VHF COMMUNICATION SYSTEM (FLITECOMM)............................................................................5
GENERAL DESCRIPTION CVC-151.......................................................................................................................... 5
GENERAL DESCRIPTION CVC-152.......................................................................................................................... 5
CVC-152 DISPLAY (SERIES III AND FLITELINE INTERFACE – FAILURE INDICATION) .................................................. 12
OPERATING THE CVC-152 ................................................................................................................................... 13
VHF COM SYSTEM BLOCK DIAGRAM (TYPICAL).................................................................................................... 16
FLITELINE VHF NAVIGATION SYSTEM (FLITENAV AND FLITEDME) ..........................................................17
GENERAL DESCRIPTION CVN-251........................................................................................................................ 17
GENERAL DESCRIPTION CDM-451 ....................................................................................................................... 17
GENERAL DESCRIPTION CVN-252........................................................................................................................ 18
LIMITATIONS ........................................................................................................................................................ 18
CVN-252 CONTROLS (SERIES III AND FLITELINE INTERFACE) ................................................................................ 20
CVN-252 CONTROLS (SERIES III AND FLITELINE INTERFACE - FAILURE INDICATION) ............................................... 24
CVN-252 CONTROLS (SERIES III AND FLITELINE INTERFACE - DME HOLD OPERATION) ......................................... 25
CVN-252 CONTROLS (ARINC 410 INTERFACE) .................................................................................................... 26
CVN-252 CONTROLS (ARINC 410 INTERFACE - DME HOLD OPERATION) ............................................................. 27
OPERATING THE CVN-252 ................................................................................................................................... 28
GENERAL DESCRIPTION SD-442 .......................................................................................................................... 30
VHF NAV SYSTEM BLOCK DIAGRAM (TYPICAL)..................................................................................................... 33
FLITELINE AUTOMATIC DIRECTION FINDER (ADF) ......................................................................................34
GENERAL DESCRIPTION ....................................................................................................................................... 34
CDF-552 CONTROLS (SERIES III AND FLITELINE INTERFACE) ................................................................................ 36
CDF-552 CONTROLS (SERIES III AND FLITELINE INTERFACE – FAILURE INDICATION) .............................................. 42
CDF-552 CONTROLS (BCD INTERFACE)............................................................................................................... 43
OPERATING THE CDF-552 ................................................................................................................................... 45
ADF SYSTEM BLOCK DIAGRAM (TYPICAL)............................................................................................................. 47
FLITELINE DUAL VHF COM AND VHF NAV CONTROL DISPLAY SYSTEM .................................................48
GENERAL DESCRIPTION ....................................................................................................................................... 48
LIMITATIONS ........................................................................................................................................................ 48
CCN-955 CONTROLS .......................................................................................................................................... 49
CCN-955 CONTROLS .......................................................................................................................................... 50
OPERATING THE CCN-955................................................................................................................................... 51
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
FLITELINE ATC TRANSPONDER SYSTEM (FLITEXPDR) ..............................................................................53
GENERAL DESCRIPTION CTR-352 ........................................................................................................................ 53
CTR-352 CONTROLS (ARINC-410 OCTAL INTERFACE)......................................................................................... 55
OPERATING THE CTR-352 ................................................................................................................................... 60
ATC SYSTEM BLOCK DIAGRAM (TYPICAL)............................................................................................................. 62
FLITELOGIC EFIS TUNING FEATURES............................................................................................................63
GENERAL DESCRIPTION ....................................................................................................................................... 63
OPERATING THE CONTROL DISPLAYS WITH EFIS................................................................................................... 63
CONFIGURATION STATUS PAGE (ALL UNITS) ..............................................................................................64
LIMITATIONS.......................................................................................................................................................66
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
Introduction
The FliteLine™ Avionics Systems represent the next generation of Chelton avionics. The
FliteLine Control Display units are subsystems of the Chelton Avionics FliteLine Systems.
The FliteLine NAV/COM/ADF/ATC Control Displays are one of several methods of controlling
the Chelton Avionics FliteLine remote-mounted avionics systems.
The FliteLine name builds from the reputation and heritage that Wulfsberg™ has enjoyed
with the Flitecomm™ and Flitefone® products. The new FliteLine products are the latest line
of Chelton's remote-mounted avionics. In addition to the Control Display units, the individual
systems within the FliteLine product line include: FliteCOMM™, FliteNAV™, FliteXPDR™,
and FliteDME™
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
FliteLine VHF Communication System (FliteCOMM)
General Description CVC-151
The FliteLine CVC-151 is an all digital DSP VHF Comm Transceiver, built and designed to ARINC Air Transport
specifications. The Transceiver is designed to meet the latest ATC environment, all future CNS ATN
requirements, and has provisions for VDL Mode 2 and VDL Mode 3. The CVC-151 features a 20 watt solid-state
transmitter, is compliant with 25 kHz or 8.33 kHz spacing and the architecture is standard ARINC 429 which
supports interface to FMS systems and the Chelton RMS 555 Radio Management System. The CVC-151
Transceiver is interchangeable with current Series III VHF Comm Transceivers using a special mounting tray
adapter.
Features
ƒ
8.33 kHz and/or 25 kHz Channel Spacing
ƒ
FM Immunity
ƒ
Continuous Transmit Capability (at reduced power)
ƒ
Built-in SELCAL and ACARS Capability
ƒ
New Color LCD Controller: CVC-152 single Com Control Display or Multi-function color Nav/Com
CCN-955 CD
ƒ
Increased System Self-Test and BIT
ƒ
ARINC 429 Digital Data Bus
ƒ
118.000-136.975 MHz Standard Frequency Range
ƒ
118.000 -151.975 MHz Extended Frequency Range Option
ƒ
Weight and Volume Savings Compared to Series III VC-401B
ƒ
Provisions for VDL Mode 2 and VDL Mode 3
General Description CVC-152
The Chelton CVC-152 Control Display Unit is available in versions for use with transceivers with fixed channel
spacing (25 kHz or 8.33 kHz), and for units with switchable (25 kHz and 8.33 kHz) channel spacing. The CVC152 is a direct replacement for the Chelton CD-402B and CD-402C Control Display Units.
The CVC-152 Control Display Unit provides a simultaneous readout of two frequencies: The active frequency in
the upper display and, immediately below it, the standby frequency. Frequency switching is accomplished by
simply pressing a frequency transfer button. The Transmit Annunciator (Tx) appears in the display when RF is
present at the output of the transceiver, providing positive proof-of-operation. When the CVC-152 Control
Display Unit is turned on, a diagnosis of all critical circuits begins, and continues until the System is turned off. If
a fault is detected at any time, a FAIL annunciation appears in the display.
The CVC-152 Control Display Unit has a nonvolatile memory which allows it to remember the last frequencies
displayed, indefinitely, even when power is removed. This feature prevents momentary power interrupts from
affecting the system, and allows the last frequencies used to appear immediately when the System is turned on.
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
The CVC-152 Communication Control Display Unit is designed to interface with Chelton FliteLine
Communications Radios (CVC-151), Chelton Series III Communications Radios (VC-401B and VC-401C in the
VCS 40 Systems), and Collins Communication Radios with the ARINC 410 (2x5) Interfaces.
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CVC-152 Control Display Unit
CHELTON
COM
"Active" COM Annunciator
COM System Number
COM Transmit Annunciator
ACT
12
124.950
Volume Annunciator
TX
124.950
Mode Annunciators
Standby COM Frequency
Mode Select (Outer Knob)
Volume Control (Inner Knob)
Active COM Frequency
25k
MODE
VOL
8.33k
1MHz Frequency Tuning
(Outer Knob)
TST
TUNE
PWR
25kHz and 8.33 kHz
Frequency Tuning (Inner
Knob)
Active/Standby Transfer
(pushbutton)
Power On/OFF (pushbutton)
Switchable Channel Spacing
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CVC-152 Control Display Unit
CHELTON
COM
"Active" COM Annunciator
COM System Number
COM Transmit Annunciator
ACT
12
TX
Volume Annunciator
124.950
Mode Annunciators
124.950
ON
Standby COM Frequency
Mode Select (Outer Knob)
Active COM Frequency
TST
MODE
VOL
1MHz Frequency Tuning
(Outer Knob)
TUNE
25kHz Frequency Tuning
(Inner Knob)
Volume Control (Inner Knob)
PWR
Active/Standby Transfer
(pushbutton)
Power On/OFF (pushbutton)
Fixed Channel Spacing
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CVC-152 Controls (Series III, FliteLine, ARINC 410 Interfaces)
CHELTON
ACT
Mode Selector
COM
Switchable Channel Spacing
25k - Selects 25 kHz channel spacing.
124.950
8.33k - Selects 8.33 kHz channel spacing.
124.950
25k
8.33k
TST
MODE
VOL
Outer Knob
TST - Disables the squelch circuits to allow audible
verification of receiver operation.
TUNE
*Note: There is no ON mode when 25kHz and
8.33kHz capable Radios are detected.
PWR
Mode Selector
CHELTON
ACT
COM
Fixed Channel Spacing
On – Standard position allows 25kHz channel
tuning operation
124.950
TST - Disables the squelch circuits to allow audible
verification of receiver operation.
124.950
ON
MODE
VOL
Outer Knob
TST
TUNE
*Note: Fixed Channel Spacing is the only mode
ARINC 410 Interface installations will have.
PWR
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CVC-152 Controls (Series III, FliteLine, and ARINC 410 Interfaces Continued…)
CHELTON
ACT
Frequency Knobs
COM
The right outer knob tunes the transmit/receive
frequency in whole MHz steps (118, 119, 120,
etc.). The right inner knob tunes in 25 or 8.33
kHz steps (refer to the table on page 10).
124.950
Frequency Transfer Button
124.950
25k
8.33k
The right inner knob also functions as a
pushbutton for switching the active and
standby frequency.
TST
MODE
VOL
TUNE
PWR
Press and release to exchange active and
standby frequencies. Press and hold 2
seconds to remove the standby frequency so
that the active frequency can be changed
directly with the frequency knobs. Press and
hold 2 seconds again to restore the standby
frequency.
Press and hold for 7 seconds or longer to set
the active frequency to 121.50 MHz, and put
the radio into the active tuning mode.
CHELTON
ACT
Volume Control (Optional) - Inner knob
controls the receiver audio volume. Volume
Level Annunciator appears only when volume
is being adjusted and is removed from display
two seconds following adjustment.
COM
124.950
124.950
25k
MODE
VOL
Inner Knob
Page 10
Dec 2005
8.33k
TST
TUNE
PWR
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CVC-152 Controls (Series III, FliteLine, and ARINC 410 Interfaces Continued…)
Active Frequency
ACT
124.950
25k
8.33k
The upper line of the display always shows
the active frequency…
TST
Active Annunciator
ACT
124.950
…which is indicated by the Active
Annunciator (the letters ACT).
124.950
25k
8.33k
TST
Standby Frequency
ACT
124.950
The lower line of the display shows the
standby frequency.
124.950
When both frequencies are shown, rotating
the FREQUENCY KNOBS changes the
standby frequency.
25k
8.33k
TST
Transmit Annunciator
ACT
124.950
TX
124.950
25k
8.33k
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The Transmit Annunciator (the letters Tx)
indicates an RF output of the transmitter. It
appears when the microphone is keyed.
*Note:Tx Indicator not present on units
configured for ARINC 410 interface
TST
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CVC-152 Controls (Series III, FliteLine, and ARINC 410 Interfaces Continued…)
System Number
ACT
124.950
TX
124.950
25k
8.33k
TST
The System Number indicates that this
display is for COM System 2 (when more
than one system is installed). The number
1 indicates that this display is for COM
System 1 (when more than one system is
installed).
If only one COM System is installed or if
this Control Display Unit controls COM 3 in
a three-radio system, the display shows a
blank instead of 1 or 2.
CVC-152 Display (Series III and FliteLine Interface – Failure Indication)
ACT
124.950
FAIL 1
25k
ACT
8.33k
FAIL 2
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Dec 2005
8.33k
FAIL 1 in the lower line of the display
indicates a System failure. Neither
transmitter nor receiver is operative.
TST
124.950
25k
* Series III Interface (FliteLine Radio
installations may display these pages
when configured as Series III)
TST
* Series III Interface (FliteLine Radio
installations may display these pages
when configured as Series III)
FAIL 2 in the lower line of the display
indicates a Transmitter only failure. This is
displayed only when the microphone is
keyed. The receiver is still operative
unless FAIL 1 is displayed with the
microphone not keyed.
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
Operating the CVC-152
1. Turn the MODE SELECTOR to ON (fixed channel spacing) or to 25kHz or 8.33kHz (switchable channel
spacing). The last frequencies selected prior to System turnoff reappear in the display.
2. If these are not the desired frequencies, rotate the appropriate FREQUENCY KNOB until the desired
frequency is displayed as the standby frequency in the lower line of the display.
The large frequency knob increments (clockwise rotation) or decrements (counter-clockwise rotation) the
frequency being tuned by one megahertz for each detent.
The small frequency knob increments (clockwise rotation) or decrements (counter-clockwise rotation) the
frequency being tuned by 25 kHz or 8.33 kHz for each detent.
For 8.33 kHz channel spacing, the small frequency knob sequences through a list of both 25 kHz and 8.33
kHz channels (see table below).
Frequency (MHz)
Channel Spacing (kHz)
Channel Name
(as displayed on screen)
118.0000
25
118.000
118.0000
8.33
118.005
118.0083
8.33
118.010
118.0167
8.33
118.015
118.0250
25
118.025
118.0250
8.33
118.030
118.0333
8.33
118.035
118.0417
8.33
118.040
118.0500
25
118.050
118.0500
8.33
118.055
118.0583
8.33
118.060
118.0667
8.33
118.065
118.0750
25
118.075
118.0750
8.33
118.080
118.0833
8.33
118.085
118.0917
8.33
118.090
118.1000
136.9750
25
118.100
25
136.975
136.9750
8.33
136.980
136.9833
8.33
136.985
136.9917
8.33
136.990
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
3. Press and release the FREQUENCY TRANSFER button. This exchanges the two displayed frequencies.
The desired frequency is now active and may be used immediately.
4. Use the VOLUME CONTROL to adjust volume if a station is broadcasting.
5. To set a new standby frequency, rotate the appropriate FREQUENCY KNOB until the desired frequency is
displayed in the lower line of the display.
NOTE:
To tune the active frequency only (without first tuning the standby and then "flipping" the
frequencies), press and hold the FREQUENCY TRANSFER button for two seconds, then release
it. This removes the standby frequency from the display.
The FREQUENCY KNOBS may now be used to change the active frequency.
Press and hold the FREQUENCY TRANSFER button for two seconds again to restore the
standby frequency to the display, if desired.
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CVC-152 Notes
1. The FREQUENCY SELECTOR knobs tune the radio transceiver directly. The display shows the
frequencies to which the radio transceiver is actually tuned. In addition to the CVC-152, the Chelton
Series III transceivers may also be tuned by an ARINC 429 digital bus. In addition to the CVC-152, the
Chelton FliteLine transceivers may be tuned by either ARINC 429 digital bus or Controller Area Network
(CAN) Bus.
2. Display intensity and panel lighting are controlled by external dimmer controls.
3. Pressing and holding the FREQUENCY TRANSFER button for at least 7 seconds before releasing it
sets the COM active frequency to 121.50 MHz and puts the unit into the active tuning mode. This is true
even if segments of the display are faulty or a lighting failure occurs. From this known reference point,
any other frequency may be set by counting detents of the FREQUENCY SELECTOR knobs as they
are rotated. Each clockwise detent of the outer knob is one Megahertz difference. Each clockwise
detent of the inner knob is 25kHz or 8.33 kHz difference.
4. The FREQUENCY SELECTOR knobs rotate continuously through all detents without end stops. After
rotating the outer knob clockwise to the highest number, the next detent will be the lowest number (118
MHz).
5. Pressing and holding the left pushbutton (PWR) for more than 1 second will trigger the system to
shutdown. A warning screen will display a countdown. Releasing the PWR button before the count has
expired will return the unit to the display screen active prior to initiating the shutdown.
Should the system become unresponsive, a hardware failsafe shutdown can be initiated. Under this
circumstance, press and hold the PWR button for 12-15 seconds. There is no indication other than
actual system shutdown and an audible click.
6. The system that is in the off condition may be turned on by simply pressing the PWR button
momentarily.
7. Systems configured for ARINC 410 (2x5) Digital Interface will only support fixed channel operation.
There is no TX indicator on a system configured for ARINC 410 interface.
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
VHF COM System Block Diagram (Typical)
VHF Antenna
ARINC 429
Radio
Management
System
VHF Communications
Tranceiver
Microphone
Audio
and PTT
Audio Panel
Function Select
Audio
Tuning Data*
Panel Dimmer Control
FrequencySelect
Sidetone
CVC-152
Audio
Display Dimmer Control
* Control Displays configured for ARINC 410
typically do not have tuning data returned from
the radio
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
FliteLine VHF Navigation System (FliteNAV and FliteDME)
General Description CVN-251
The FliteLine CVN-251 is an all digital DSP Navigation System which combines VOR/LOC, Glideslope and
Marker Beacon functions. This Receiver configuration supports the total navigation interface requirements for
MFD or moving map displays. The ARINC 429 digital data bus offers compatibility with EFIS/LCD displays, the
Chelton RMS-555 Radio Management and Flight Management Systems by supporting Nav auto-tune operation.
Additional interfaces are provided to HSI’s, CDI’s and RMI’s to include analog. Automatic calibration of the VOR
converter ensures navigation guidance accuracy. The CVN-251 is interchangeable with Series III VHF Nav
Receivers using a special mounting tray adapter.
Features
ƒ
Includes Glideslope and Marker Beacon
ƒ
Digital VOR/LOC and Glideslope Converters
ƒ
FM Immunity
ƒ
Analog Outputs to CDI’s and HSI’s
ƒ
Digital Redial/bearing Output
ƒ
ARINC 429 Digital Data Bus
ƒ
Increased Self-test and BIT
ƒ
Optional Stand Alone Color Control Head (CVN-252)
ƒ
Or Color Multi-function (CCN-955) Nav/Com
ƒ
Special Rotor Modulation Protection
ƒ
Weight and Volume Savings Compared to Series III VN-411B
General Description CDM-451
The CDM-451 is an all digital DME. The triple channel scanning DME provides ARINC 429 outputs along with
analog outputs for two displays or EFIS MFD’s. The CDM-451 Transceiver is compatible with FMS Systems to
include auto-tune operation. The third output channel can also provide single DME output to the FMS for
independent navigation solution. The Receiver can be tuned via ARINC 429 bus via the CVN-251 or Series III
NAV Radio using individual CVN-252 Nav Control Displays, the Chelton Series III RMS 555 Radio Management
System, or with Flight Management Systems. The CDM-451 is interchangeable with the current Series III DME
using a special mounting tray adapter. DME data may be optionally displayed with the SD-442 display
controller.
Features
ƒ
Simultaneous Scanning of Three Ground Stations
ƒ
325 Watt Transmitter
ƒ
Continuous Self-test
ƒ
ARINC429 Digital Data Bus Interface
ƒ
Analog Outputs
ƒ Volume and Weight Savings Compared to Series III DM-441B
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PILOT’S GUIDE
General Description CVN-252
The Chelton CVN-252 VHF Navigation Control Display is designed to control VHF navigation receiving systems
that combine VOR/LOC, glideslope, and marker beacon reception. The CVN-252 is a direct replacement for the
Chelton CD-412B Control Display Unit.
The CVN-252 Control Display can digitally display BEARING TO or RADIAL FROM any selected VOR station.
When an ILS frequency is selected by the Series III or FliteLine Navigation radio, the letters LOC appear below
the frequency on the display when RAD or BRG are selected.
The CVC-252 Control Display incorporates microprocessor technology to achieve performance, reliability,
accuracy, and features not possible in previous systems. These include advanced filtering techniques, full-time
self-diagnostics, non-volatile frequency memory.
Special filtering circuits virtually eliminate noise, including rotor modulation noise in helicopter installations.
Self-testing begins when the system is turned on, and continues until turnoff. Faults detected result in a FAIL
annunciation.
Non-volatile memory means that the last frequency selected is in system memory if the system is turned off, if
power is interrupted, or even if the system is removed from the aircraft.
The CVN-252 Navigation Control Display Unit is designed to interface with Chelton FliteLine Navigation Radios
(CVN-251), Chelton Series III Navigation Radios (VN-411B in the VNS 41 System), and Collins Navigation
Radios with the ARINC 410 (2x5) Interfaces.
Limitations
NOTE: Installations of the CVN-252, and CCN-955 with the Series III or ARINC-410 digital interfaces which
include the optional DME Hold functionality are subject to certain limitations. In these installations, the aircraft
shall provide indication of the DME Hold status on equipment other than the FliteLine Control Display and within
the pilot's primary field of view.
Failure to meet these limitation guidelines violates the installation guidance set forth in this manual and may
lead to an unsafe aircraft operating condition.
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PILOT’S GUIDE
CVN-252 NAV Control Display
CHELTON
NAV
"Active" NAV Annunciator
NAV System Number
ACT
12
Active NAV Frequency
Volume Annunciator
110.20
Mode Annunciators
108.15
Standby NAV Frequency,
Bearing, and Radial
ON
Mode Select (Outer Knob)
Volume Control (Inner Knob)
Power On/OFF (pushbutton)
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MODE
VOL
PWR
RAD
1MHz Frequency
Tuning (Outer Knob)
BRG 
TUNE
50kHz Frequency
Tuning (Inner Knob)
Active/Standby
Transfer(pushbutton)
DME Hold (pushbutton)
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CVN-252 Controls (Series III and FliteLine Interface)
CHELTON
ACT
Mode Selector
NAV
ON - The last frequencies displayed
reappear on the display. Allows tuning of
active and standby frequencies.
110.20
RAD - Displays the radial the aircraft is on
from the selected VOR. It is displayed
digitally below the selected VOR frequency.
108.15
ON
MODE
VOL
Outer Knob
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Dec 2005
PWR
RAD
BRG 
BRG - Displays the bearing to the selected
VOR. It is displayed digitally below selected
VOR frequency.
TUNE
* Units configured for DME Hold will have an
arrow next to the BRG mode annunciator
indicating the HLD mode is off-screen to the
right. See” CVN-252 Controls (Series II and
Fliteline Radio DME Hold Operation)” for
more information)
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FLITELINE AVIONICS SYSTEM
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CVN-252 Controls (Series III and FliteLine Interface continued…)
CHELTON
ACT
Frequency Selector
NAV
The right outer knob tunes the receiver in
whole MHz steps (108, 109, 110, etc., up
to 117 MHz).
110.20
The right inner knob tunes fractional MHz
frequencies in 50 kHz steps (.00, .05,
.10, .15, etc., up to .95).
108.15
ON
RAD
Frequency Transfer Button
BRG 
MODE
VOL
TUNE
PWR
Press and release to exchange the active
and standby frequencies when both are
displayed. Press and hold 2 seconds to
remove the standby frequency so the
active frequency may be tuned directly
with the frequency knobs (press again
and hold 2 seconds to restore the
standby frequency).
Press and hold 7 seconds to tune the
receiver to 108.00 MHz and put the unit
into the active tuning mode.
CHELTON
ACT
Volume Control (Optional) - Inner knob
controls the receiver audio volume. Volume
Level Annunciator appears only when
volume is being adjusted and is removed
from display two seconds following
adjustment.
NAV
110.20
108.15
ON
RAD
MODE
VOL
Inner Knob
BRG 
TUNE
PWR
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CVN-252 Controls (Series III and FliteLine Interface continued…)
ACT
When the NAV radio is turned on, the last display
before turnoff is displayed again.
110.20
The upper line of the display always shows the
active frequency (indicated by the letters ACT. The
lower display may show the standby frequency,
digital radial or bearing, or LOC annunciation,
depending on the FUNCTION SELECTOR setting.
108.15
ON
ACT
RAD
BRG 
111.40
084.0°
ON
ACT
RAD
VOR Freq.
VOR "From"
BRG 
264.0°
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Dec 2005
RAD
If the FUNCTION SELECTOR switch is set to RAD
when a VOR frequency is active (shown on the top
line), the bottom line displays the radial the aircraft is
on FROM the VOR station.
In this mode, the FREQUENCY TRANSFER button
is disabled.
111.40
ON
When two frequencies are displayed, rotating the
FREQUENCY knobs changes the bottom (standby)
frequency.
VOR Freq.
VOR "To"
If the FUNCTION SELECTOR switch is set to BRG
when a VOR frequency is active (shown on the top
line) the bottom line displays the bearing TO the
VOR station.
In this mode, the FREQUENCY TRANSFER button
is disabled.
BRG 
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CVN-252 Controls (Series III and FliteLine Interface continued…)
ACT
111.40
Three dashes on the bottom line indicate a flag
condition. This flag means that RAD or BRG has
been selected on the FUNCTION SELECTOR
switch but cannot be displayed because of
insufficient signal or during VOR station passage.
--ON
ACT
RAD
BRG 
111.40
L0C
ON
ACT
RAD
When the top (active) frequency is a localizer
station, bearing or radial cannot be displayed.
Setting the FUNCTION SELECTOR switch to BRG
or RAD will cause the letters LOC to appear on the
bottom line instead of the standby frequency. This
is a reminder that this display cannot be used for
bearing or radial data while on an ILS approach.
NOTE:
BRG 
111.40
When LOC is displayed, return the
FUNCTION SELECTOR to the ON
position so that the standby frequency is
displayed instead.
The number 1 below the letters ACT represent Nav
System 1 when more than one NAV System is
installed. This number is fixed at the time of
installation.
264.0°
ON
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RAD
BRG 
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CVN-252 Controls (Series III and FliteLine Interface continued…)
ACT
111.40
264.0°
ON
RAD
The number 2 below the letters ACT represent Nav
System 2 when more than one Nav System is
installed. This number is fixed at the time of
installation. A blank below the letters ACT represent
either Nav System 3 (when more than 2 Nav
Systems are installed) or that only one Nav System
is installed.
BRG 
CVN-252 Controls (Series III and FliteLine Interface - Failure Indication)
111.40
FAIL
ON
RAD
BRG 
* Series III Interface (FliteLine Radio installations
may display these pages when configured as
Series III)
A FAIL annunciation appears in the lower display to
indicate failure of the radio (such as the VNS-41A
System). Fail messages and their meanings are:
•
FAIL 1: NAV synthesizer out of lock.
•
FAIL 2: G/S synthesizer out of lock.
•
FAIL 3: NAV converter A/D check fail.
•
FAIL 4: Non-volatile memory fail.
These annunciation’s are the result of a continual
system self-test, and indicate that maintenance is
required before the system may be used.
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CVN-252 Controls (Series III and FliteLine Interface - DME Hold Operation)
CHELTON
HLD – (optional) By switching to this mode
and momentarily pressing the right inner
pushbutton system will activate or
deactivate DME Hold. Indication of DME.
NAV
ACT
110.20
* When the mode selector knob is placed on
the HLD mode a left arrow will appear
indicating off-screen modes to the left.
-- RAD
BRG
HLD
MODE
VOL
Outer Knob
The standby frequency will dash when in
HLD mode and tuning the active frequency
is inhibited.
TUNE
WARNNING - DME Hold status must be
annunciated elsewhere in the aircraft on
equipment such as an EFIS or FMS.
PWR
CHELTON
ACT
When right inner pushbutton is pressed
when in HLD mode the box surrounding the
HLD text will flash twice.
NAV
110.20
-- RAD
MODE
VOL
PWR
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BRG
HLD
TUNE
Pushbutton
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CVN-252 Controls (ARINC 410 Interface)
CHELTON
ACT
ON – Normal Operation Mode
NAV
TST – In TST (Test) mode the Control
Display will send a discrete signal to the
radio to enter test mode or self test mode.
110.20
108.15
ON
MODE
VOL
•
Refer to operation manual for the
installed radio for further guidance on
test and self test mode.
•
Volume control, power, and frequency
operations are the same as Series II
and FliteLine configured units.
TST
TUNE
PWR
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CVN-252 Controls (ARINC 410 Interface - DME Hold Operation)
CHELTON
ACT
HLD – (optional) By switching to this mode
and momentarily pressing the right inner
pushbutton system will activate or
deactivate DME Hold. Indication of DME.
NAV
110.20
The standby frequency will dash when in
HLD mode and tuning the active frequency
is inhibited.
---.--ON
TST
MODE
VOL
Outer Knob
WARNNING - DME Hold status must be
annunciated elsewhere in the aircraft on
equipment such as an EFIS or FMS.
HLD
TUNE
PWR
CHELTON
ACT
When right inner pushbutton is pressed
when in HLD mode the box surrounding the
HLD text will flash twice.
NAV
110.20
---.--ON
MODE
VOL
PWR
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TST
HLD
TUNE
Pushbutton
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
Operating the CVN-252
1. Set the MODE SELECTOR to ON.
2. If these are not the desired frequencies, rotate the FREQUENCY KNOBS until the desired frequency is
displayed on the bottom portion of the display
3. Press and release the FREQUENCY TRANSFER button. This exchanges the two displayed
frequencies. The desired frequency is now active and may be used immediately.
4. Adjust the VOLUME CONTROL for the desired audio level.
5. Rotate the FREQUENCY KNOBS until the desired standby frequency appears on the bottom portion of
the display.
NOTE: To tune the active frequency only (without first tuning the standby and then "flipping" the
frequencies), press and hold the FREQUENCY TRANSFER button for two seconds, then
release it. This temporarily removes the standby frequency from the display.
Now the FREQUENCY KNOBS may be used to change the active frequency. The active
frequency may be used immediately.
To restore the standby frequency to the display, press and hold the FREQUENCY TRANSFER
button two seconds.
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CVN-252 Notes
1. The FREQUENCY SELECTOR KNOBS tune the navigational radio receiver directly. The Series III and
FliteLine radios digitally transmit the actual frequency to which the receiver is tuned. The transceiver may
also be tuned by an external ARINC 429 digital data bus.
2. The VOLUME control on the CVN-252 Control Display does not adjust the volume of the Marker Beacon
receiver in the navigation receiver. This volume is preset. Typically, Marker Beacon volume is adjusted by
a control on an audio control panel.
3. Display intensity and panel lighting are controlled by external dimmer controls.
4. Pressing and holding the FREQUENCY TRANSFER button for at least 7 seconds before releasing it sets
the active frequency to 108.00 MHZ and puts the unit into active tuning mode. Because the display is
controlled by the receiver (see Note 1 above), the receiver will tune to this frequency even if the display is
defective. From the known reference of 108.00 MHz as a starting point, any other frequency may be
selected by counting detents. Each clockwise detent of the outer knob is one MHz difference (108, 109,
110, etc.). Each clockwise detent of the inner knob is .05 MHz difference (.00, .05, .10, .15, etc.). For
example, rotating the outer knob clockwise three detents would put the frequency at 111.00 MHz. Then
rotating the inner knob clockwise three detents would then put the frequency at 111.15 MHz.
5. The FREQUENCY SELECTOR knobs rotate continuously through all detents without end stops. For
example, the next clockwise detent of the outer knob after 117 is 108; the next clockwise detent of the inner
knob after .95 is 00.
6. Pressing and holding the left pushbutton (PWR) for more than 1 second will trigger the system to shutdown.
A warning screen will display a countdown. Releasing the PWR button before the count has expired will
return the unit to the display screen active prior to initiating the shutdown.
Should the system become unresponsive, a hardware failsafe shutdown can be initiated. Under this
circumstance, press and hold the PWR button for 12-15 seconds. There is no indication other than actual
system shutdown and an audible click.
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
General Description SD-442
The SD-442 is a panel mounted DME Selector Display providing the pilot the means to control the CDM-451
modes and to display DME information. The unit provides a full time display of distance and ground speed to
either the NAV 1 or NAV 2 selected VORTAC. Annunciation of the active NAV system is displayed below the
distance readout. The system permits holding the active station frequency in memory, thus freeing the active
navigation receiver for channeling. Annunciation of the hold (HLD) mode is provided below the displayed held
NAV frequency.
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
The SD-442 has only three controls. Each is a
momentary, spring-loaded type that releases when
finger pressure is removed. On-off power is through
an external switch such as a radio or avionics
master switch, or a dedicated DME switch. Volume
control of DME station identification audio is also
external, typically located on an audio panel.
NAV - Alternately places annunciator 1, 2, or RNV
in display.
Selects NAV System 1 as the controller of
the DME channel.
Selects NAV System 2 as the controller of
the DME channel.
RNV - Allows the SD-442 Selector Display to be
used as a "repeater" display or
RNAV-computed distance to a waypoint
and ground speed. This allows RNAV
data to be available during times it might
not be displayed by the RNAV System (for
example, when other data is selected for
display on some types of RNAV's).
HOLD - Pressing and releasing this switch does the
following:
A.
Locks the appropriate channel of the DME
frequency in use. Aircraft wiring will affect
the way in which the hold feature works. In
some installations, pin 58 ground, the hold
switch will only place the corresponding
channel in hold. In others, pin 58 open, the
hold switch will place the displayed channel
into hold.
B.
Displays the current NAV frequency that
determines the DME channel.
C.
Disconnects control of the DME from the
NAV Receiver.
D.
Displays annunciation HLD.
The purpose of this switch is to allow the
NAV Receiver to be set to other frequencies
without affecting DME operations. The DME
continues to function on its "holding" channel.
Pressing and releasing this switch while in
the HLD mode will return control back to the
indicated NAV System (1 or 2).
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
TTS - (Time-To-Station) While this switch is held
pressed, time-to-station will be shown on the
display above the switch. When the switch is
released, the display returns to its previous readout
of ground speed. If in hold when the TTS switch is
pressed, the HLD FREQ on the display will blink
twice to alert the pilot.
NOTE: When DME is being tuned by an MLS,
receive DME hold is inhibited.
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
VHF NAV System Block Diagram (Typical)
Glide Slope
Antenna
VOR/Localizer
Antenna
Marker Beacon
Antenna
Marker Beacon Lamps
LO
HI
ARINC 429
Channel Select
DME
Marker Beacon Sensitivity
VHF Navigation
Receiver
NAV Data
Output
ARINC 429
Freq. Select
Navigation
Management
System
REF Signals
HSI
FMS
AFCS
CDI
NAV Data
Audio
Panel
Function Select
Nav Audio
Tuning Data*
Panel Dimmer Control
FrequencySelect
Marker Beacon
Audio
CVN-252
NAV Audio
Display Dimmer Control
* Control Displays configured for ARINC 410
typically do not have tuning data returned from
the radio
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
FliteLine Automatic Direction Finder (ADF)
General Description
The Chelton CDF-552 ADF Control Display provides control to Automatic Direction Finding radios enabling
reception of low-frequency navigational aids and AM broadcast stations in the 190.0 – 1860 kHz frequency
range. The CDF-552 provides a direct replacement of the Series III CD-432B Control Display Unit, for control of
the DF-431B in the DFS-43A system.
The CDF-552 Control Display along with an ADF radio system provides accurate, dependable reception of
enroute non-directional beacons (NDB), Locator Outer Markers (LOM), and commercial AM broadcast stations.
Microprocessor circuitry controls operation, processes signals, performs self -calibration, and provides full-time
self -diagnostics. The CDF-552 may be used with Electronics Flight Instrument Systems (EFIS) or in
conjunction with the other Chelton VHF Navigation Systems for course deviation display.
The CDF-552 configured for Series III or FliteLine displays frequencies in the range 190 kHz to 1860 kHz and
the international marine HF distress frequency of 2182 kHz. The CDF-552 configured for BCD tuning displays
frequencies in the range 190.0 kHz to 1749.5 kHz. The active and standby frequency are displayed
simultaneously and stored in nonvolatile memory. Switching between the two is done by simply pressing a
frequency transfer button below the displayed frequencies.
The CDF-552 Automatic Direction Finding (ADF) Control Display Unit is designed to interface with the Chelton
Series III ADF Radio (DF-431B in the DFS 43 system), and Collins ADF Radios with the BCD Parallel Tuning
Interface.
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CDF-552 Control Display Unit
CHELTON
ADF
"Active" ADF Annunciator
ADF System Number
ACT
12
Standby ADF
Frequency and Bearing
Volume Annunciator
190.5
Mode Annunciators
1860.0
 ANT
Mode Select (Outer Knob)
Active ADF Frequency
MODE
VOL
Volume Control (Inner Knob)
ADF
BRG 
TUNE
100kHz Frequency
Tuning (Outer)
10kHz and .5 kHz
Frequency
Tuning (Inner Knob)
PWR
Power On/OFF,
Whole/Half kHz (pushbutton)
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Active/Standby
Transfer(pushbutton)
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CDF-552 Controls (Series III and FliteLine Interface)
Mode Selector
CHELTON
ADF
ACT
ANT - Enables the ADF System and the
non-directional sense antenna. The last
frequencies displayed reappear on the
display. Frequency tuning is enabled,
but no direction-finding capability exists
in this mode. External pointers park at
90° or 270°.
190.5
1860.0
ANT
MODE
VOL
Outer Knob
PWR
ADF
BRG 
TUNE
ADF - Standard direction finding mode.
External indicators point to station.
BRG - Digitally displays the magnetic bearing
to selected station. The FREQUENCY
TRANSFER pushbutton is disabled.
External equipment continues to function
in standard ADF mode.
NOTE: BRG mode is not used for
navigation.
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CDF-552 Controls (Series III and FliteLine Interface continued…)
CHELTON
ADF
Mode Selector Continued…
BFO - (Beat Frequency Oscillator)
ACT
190.5
Identical to ADF mode, but adds a 1,000-Hz tone to
audio.
L 15
Used only to identify interrupted-carrier signals (also
known as cw).
 ADF
BRG
BFO
MODE
VOL
Outer Knob
TUNE
PWR
CHELTON
ADF
ACT
TST - Test Mode
1. Sends a park-at-90° command to external
indicators.
190.5
2. Displays the letter L along with a number in
Standby Frequency window, used for
maintenance purposes.
L 15
TST
ANT
MODE
VOL
Outer Knob
ADF 
TUNE
3. Pressing the WHOLE/HALF KHZ button in this
mode interrupts the park-at-90° command and
provides station relative bearing to external
indicators. Simultaneously, the lower line of the
display will indicate the same relative bearing
digitally to the nearest tenth of a degree.
PWR
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CDF-552 Controls (Series III and FliteLine Interface continued…)
Volume Control
CHELTON
ADF
ACT
VOLUME - (inner knob of MODE SELECTOR).
Controls audio level of receiver.
190.5
1860.0
 ANT
ADF
BRG 
MODE
VOL
Inner Knob
TUNE
PWR
CHELTON
Frequency Knobs
ADF
ACT
Large (right outer) knob tunes the receive
frequency in hundreds of kHz from 100kHz
through 2100kHz, skipping 1900kHz and
2000kHz.
190.5
Small (right inner) knob tunes tens, ones, and
half kHz from 0 to 99.5 (see the WHOLE/HALF
KHZ pushbutton switch description).
1860.0
 ANT
MODE
VOL
ADF
BRG 
TUNE
PWR
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CDF-552 Controls (Series III and FliteLine Interface continued…)
CHELTON
ACT
When the large knob is rotated clockwise from 18 to
the next detent, 2100 will appear in the display.
Next, rotating the small knob one detent clockwise
will cause 2182 to appear in the display. The small
knob may then be used to tune from 2181 through
2183 about the maritime emergency frequency of
2182 kHz.
ADF
2182.0
2100.0
 ANT
ADF
BRG 
MODE
VOL
TUNE
PWR
CHELTON
WHOLE/HALF KHZ
ADF
ACT
Left Pushbutton switch (Same as PWR) alternates
between one-half kHz tuning and whole (units)
tuning by the small FREQUENCY KNOB. When in
the one-half kHz tuning mode, a decimal point will
appear in the display.
190
In the TST position of the FUNCTION SELECTOR,
pressing the WHOLE/HALF KHZ pushbutton
displays relative station bearing in the lower line of
the display to the nearest tenth of a degree.
1860
 ANT
ADF
MODE
VOL
BRG 
TUNE
PWR
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CDF-552 Controls (Series III and FliteLine Interface continued…)
CHELTON
ACT
FREQUENCY TRANSFER
ADF
The right inner knob also acts as a momentary
pushbutton switch. Pressing and immediately
releasing exchanges the active and standby
frequencies when both are displayed.
1860
Pressing and holding for two seconds before
releasing temporarily removes the standby
frequency. This allows the active frequency to be
changed. Pressing again for two seconds restores
the standby frequency.
190
 ANT
MODE
VOL
ADF
BRG 
TUNE
Pressing and holding for seven seconds or longer
before releasing sets the receiver to its lowest
tunable frequency (100 kHz).
PWR
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CDF-552 Controls (Series III and FliteLine Interface continued…)
ACT
190.5
1860.0
 ANT
ACT
ADF
The top line of the display is always the active
frequency, indicated by the letters ACT. The
number 1 or 2 below the letters ACT indicate the
ADF System Number when more than one system
is installed.
Data in the lower line of the display depends on
position of FUNCTION SELECTOR.
In ANT, ADF, or BFO mode, the bottom line of the
display indicates the standby frequency.
BRG 
190.5
In BRG mode, the bottom line of the display
indicates the magnetic bearing of active station. In
this mode the active frequency can be tuned
directly.
023°
 ANT
ADF
BRG 
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CDF-552 Controls (Series III and FliteLine Interface – Failure Indication)
Dashes indicate a flag condition.
ACT
-- ANT
ADF
BRG 
NOTE: FAIL 1, FAIL 2 or FAIL 3, 4, 5, 6,
Annunciation indicates a System fault; the
system is not usable in these conditions.
ACT
FAIL 1
ANT
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Dec 2005
ADF
BRG 
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CDF-552 Controls (BCD Interface)
CHELTON
Mode Selector
ADF
ACT
ANT - Enables the ADF System and the
non-directional sense antenna. The last
frequencies displayed reappear on the
display. Frequency tuning is enabled, but
no direction-finding capability exists in this
mode. External pointers park horizontally.
Volume may be adjusted for comfortable
reception.
190.5
1749.5
 ANT
ADF
BFO
MODE
VOL
Outer Knob
TUNE
PWR
Note: Certain BCD tuned ADF models with
a top mounted antenna will park the
external pointer at 90 degrees and a
bottom mounted antenna will park at
270 degrees
Other models will park the external
pointer no matter where the antenna
is located.
ADF - Standard direction finding mode. External
indicators point relative bearing to the tuned
station.
CHELTON
ADF
Mode Selector Continued…
BFO - (Beat Frequency Oscillator or Tone)
ACT
190.5
Enables a 1,000-Hz tone to be added to audio
identifying interrupted-carrier signals (also known
as cw keyed stations).
1749.5
 ANT
ADF
MODE
VOL
Outer Knob
BFO
TUNE
PWR
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CDF-552 Controls (BCD Interface continued…)
CHELTON
ADF
ACT
TST - Test Mode
1. Outputs a Test or Self Test discrete Signal to
the radio. Active and Standby tuning are both
available in this mode.
190.5
Note 1: The function of the Test/Self Test signal
varies with regard to the installed radio.
Please refer to the operation manual
specific to the radio.
1749.5
TST
MODE
VOL
Outer Knob
Page 44
Dec 2005
PWR
ANT
ADF 
TUNE
Note 2: ADF Radios Tuned with the BCD interface
will not display the display the letter L along
with a number in Standby Frequency
window as in the Series III/FliteLine.
Note 3. Pressing the WHOLE/HALF KHZ button in
this mode does not interrupt the park-at-90°
command and provide station relative
bearing to external indicators as in the
Series III/FliteLine.
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
Operating the CDF-552
Series III and Fliteline Interface
1. Set the MODE SELECTOR to ANT. Note that the external ADF pointer moves to 90° and stops.
2. If frequencies displayed are not the ones desired, rotate the FREQUENCY KNOBS until the desired
frequency is displayed on the bottom line of the display.
3. Press and release the FREQUENCY TRANSFER button. This exchanges the two displayed
frequencies. The desired frequency is now active.
4. Adjust the VOLUME control to the desired audio level and identify the station represented by the active
frequency displayed.
NOTE: An alternate tuning method is to press and hold the FREQUENCY TRANSFER button for
two seconds before releasing. This removes the standby frequency from the display and
the active frequency may be tuned by rotating FREQUENCY KNOBS. The system is
ready for immediate operation. If desired, press the FREQUENCY TRANSFER button for
two seconds again to restore standby frequency.
5. Rotate the MODE SELECTOR to ADF. Note that the external ADF pointers leave the 90° parked
position and move to indicate the direction to the active station.
6. Rotate the MODE SELECTOR to BRG and read the magnetic bearing shown digitally on the lower line
of the display. Compare this reading with the other ADF displays to assure correct system operation.
7. Return the MODE SELECTOR to ADF for normal ADF operation.
BCD Interface
1. Set the MODE SELECTOR to ANT. Note that the external ADF pointer moves to 90° and stops.
2. If frequencies displayed are not the ones desired, rotate the FREQUENCY KNOBS until the desired
frequency is displayed on the bottom line of the display.
3. Press and release the FREQUENCY TRANSFER button. This exchanges the two displayed
frequencies. The desired frequency is now active.
4. Adjust the VOLUME control to the desired audio level and identify the station represented by the active
frequency displayed.
NOTE: An alternate tuning method is to press and hold the FREQUENCY TRANSFER button for
two seconds before releasing. This removes the standby frequency from the display and
the active frequency may be tuned by rotating FREQUENCY KNOBS. The system is
ready for immediate operation. If desired, press the FREQUENCY TRANSFER button for
two seconds again to restore standby frequency.
5. Rotate the MODE SELECTOR to ADF. Note that the external ADF pointers leave the 90° parked
position and move to indicate the direction to the active station.
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CDF-552 Notes
1. The FREQUENCY SELECTOR knobs tune the radio receiver directly. The display actually shows the
frequencies to which the receiver is tuned. In addition to rotation of the FREQUENCY SELECTOR KNOBS,
the receiver may be tuned by an external ARINC 429 digital bus.
2. Display intensity and panel lighting are controlled by external dimmer controls.
3. If the signal to which the receiver is tuned is lost for longer than 5 seconds, the display pointers will park at
90°.
4. The FREQUENCY SELECTOR KNOBS rotate continuously through all detents without end stops. After the
highest number is displayed, the next detent clockwise will cause the lowest number to be displayed.
5. If the display is not functioning, the system frequency can be established as follows: Press the transfer
button for 7 seconds. The system will then be at 100 kHz (for BCD interface it will be 190 kHz) and it will be
in active tuning mode. Rotating the large frequency selector clockwise will increase the frequency in 100
kHz steps. Rotating the small knob clockwise will increase the frequency in 1 kHz steps.
8. Frequencies selected between 100 kHz to 189 kHz and 1861 kHz to 1899 kHz are invalid and will cause the
display to blink off and on. (except with BCD Interface)
9. Pressing and holding the left pushbutton (PWR) for more than 1 second will trigger the system to shutdown.
A warning screen will display a countdown. Releasing the PWR button before the count has expired will
return the unit to the display screen active prior to initiating the shutdown.
Should the system become unresponsive, a hardware failsafe shutdown can be initiated. Under this
circumstance, press and hold the PWR button for 12-15 seconds. There is no indication other than actual
system shutdown and an audible click.
Page 46
Dec 2005
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
ADF System Block Diagram (Typical)
VCO
±14V
10.7MHz IF
Antenna
HSI
RMI
EFIS
Etc.
Data Out
ARINC 429 SIN/COS
400 Hz XYZ Synchro
Left-Right Commands
Synchro XYZ
or
ARINC 429
Compass
System
ADF Reciever
Radio
Management
System
Function Select
Audio
Tuning Data*
Panel Dimmer Control
FrequencySelect
Synchro XYZ
or
ARINC 429
CDF-552
Audio
Audio Panel
Display Dimmer Control
* Control Displays configured for BCD typically
do not have tuning data returned from the
radio
Publication No. 150-047012
Rev. D
Page 47
Dec 2005
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
FliteLine Dual VHF COM and VHF NAV Control Display System
General Description
The Chelton CCN-955 Com/Nav Control Display Unit combines the capabilities of the CVC-152 and CVN-252
Control Displays.
The CCN-955 splits the screen displaying the communication transceiver data on the upper half and the
navigational data on the lower half. Despite combining the two radio functions all functionality remains
operationally equivalent. The CCN-955 adds functionality to the Power (on/off) button allowing it to be used as
a momentary button to toggle between the Communication and Navigation controls.
The CVC-955 is designed to interface with Chelton FliteLine Communications Radios (CVC-151) and Navigation
Radios (CVN-251), Chelton Series III Communications Radios (VC-401B and VC-401C in the VCS 40 systems)
and Navigation Radio (VN-411B in the VNS 41 system), and Collins Communication and Navigation Radios with
the ARINC 410 (2x5) Interfaces.
Limitations
NOTE: Installations of the CVN-252, and CCN-955 with the Series III or ARINC-410 digital interfaces which
include the optional DME Hold functionality are subject to certain limitations. In these installations, the aircraft
shall provide indication of the DME Hold status on equipment other than the FliteLine Control Display and within
the pilot's primary field of view.
Failure to meet these limitation guidelines violates the installation guidance set forth in this manual and may
lead to an unsafe aircraft operating condition.
Page 48
Dec 2005
Publication No. 150-047012
Rev. D
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CCN-955 Control Display Unit
Active COM Frequency
"Acitve" COM Annunciator
COM System Number
COM Tuning Annunciator
COM Transmit Annunciator
"Acitve" NAV Annunciator
NAV System Number
CHELTON
StandbyCOM Frequency
COM/NAV
COM Volume Annunciator
C ACT 124.950
12
O TX 134.750
25k 8.33k TST
N ACT 108.15
12
110.20
ON
RAD BRG
NAV Tuning Annunciator
Volume Control (Inner Knob)
Active COM Frequency
StandbyCOM Frequency
NAV Volume Annunciator
NAV Mode Annuncaotors
MODE
VOL
Mode Select (Outer Knob)
COM Mode Annunciators
PWR
SEL
TUNE
1MHz Frequency Tuning
(Outer Knob)
25kHz and 8.33 kHz
Frequency Tuning (COM),
50 kHz Tuning (NAV),
(Inner Knob)
Power On/OFF (pushbutton)
Active/Standby Transfer(pushbutton)
COM/NAV Select
(pushbutton)
Publication No. 150-047012
Rev. D
DME Hold (pushbutton)
Page 49
Dec 2005
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CCN-955 Controls
Page 50
Dec 2005
C ACT 124.950
121.500
M 25k 8.33k TST
N ACT 110.20
108.15
ON RAD BRG 
COM Tuning
C ACT 124.950
121.500
M 25k 8.33k TST
N ACT 110.20
108.15
ON
RAD BRG 
NAV Tuning
Indicates that the Communications transceiver is
the selected radio system.
The left inner knob acts as a momentary
pushbutton that selects operation of the COM or
NAV Functions.
Indicates that the Navigational receiver is the
selected radio system.
The left inner knob acts as a momentary
pushbutton that selects operation of the COM or
NAV Functions.
Publication No. 150-047012
Rev. D
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
Operating the CCN-955
1. Operation of the CCN-955 is fundamentally the same as operating individual COM and NAV Units
2. The left inner knob acts as a momentary pushbutton that selects operation of the COM or NAV
Functions.
* this pushbutton is also the power (PWR) pushbutton
Publication No. 150-047012
Rev. D
Page 51
Dec 2005
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CCN-955 Notes
1. Refer to the CVC-152 section for instructions on COM operation.
2. Refer to the CVN-252 section for instructions on NAV operation.
3. Pressing and holding the left pushbutton (PWR) for more than 1 second will trigger the system to
shutdown. A warning screen will display a countdown. Releasing the PWR button before the count has
expired will return the unit to the display screen active prior to initiating the shutdown.
Should the system become unresponsive, a hardware failsafe shutdown can be initiated. Under this
circumstance, press and hold the PWR button for 12-15 seconds. There is no indication other than
actual system shutdown and an audible click.
Page 52
Dec 2005
Publication No. 150-047012
Rev. D
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
FliteLine ATC Transponder System (FliteXPDR)
General Description CTR-352
The CTR-352 Control Display Unit provides a simultaneous control of up to two Mode A/C transponders. The
CTR-352 Control display provides tuning of the ATC 4096 Code with a special VFR Quicktune feature to rapidly
change the ATC code to 1200. The IDENT Annunciator (ID) appears in the display when the Transponder is
replying to interrogation from the ATC ground station. When the CTR-352 Control Display Unit is turned on, a
diagnosis of all critical circuits begins, and continues until the System is turned off. If a fault is detected at any
time, a failure annunciation appears in the display.
The CTR-352 Control Display Unit has a nonvolatile memory which allows it to remember the code displayed,
indefinitely, even when power is removed. This feature prevents momentary power interrupts from affecting the
system, and allows the last code used to appear immediately when the System is turned on.
The CVC-352 Communication Control Display Unit is designed to interface with Chelton FliteLine ATC
Transponder Radios (CTR-351), and Collins Transponder Radios with the ARINC 410 (2x5) Interfaces.
Publication No. 150-047012
Rev. D
Page 53
Dec 2005
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CTR-352 Control Display Unit
CHELTON
ATC
ATC Label
ATC Code
ATC
ATC System Number
1200
ATC Mode Annunciators
IDENT
Reply/Ident Lamp
TST
Mode Select (Outer Knob)
Cursor Control (Inner Knob)
Power On/OFF (pushbutton)
MODE
PWR
SEL
SBY
ON
ALT
TUNE
Code Upper Digits (Outer Knob)
Transponder ID Select (Outer Knob)
Code Lower Digits (Inner Knob)
Transponder ID Select (Inner Knob)
VFR Code 1200 Select (pushbutton)
IDENT (pushbutton)
Page 54
Dec 2005
Publication No. 150-047012
Rev. D
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CTR-352 Controls (ARINC-410 Octal Interface)
CHELTON
Mode Selector
ATC
ON – Transponder ON
ATC
The selected Transponder is ON (active),
and reports the indicated code when
interrogated (Mode A).
1200
SBY - Standby Mode
TST
SBY
ON
TUNE
MODE
Outer Knob
Places both selected and non-selected
Transponder Radios in Standby
ALT
PWR
SEL
CHELTON
ATC
Mode Selector Continued…
ALT - Altitude Reporting ON
ATC
TST
1200
SBY
MODE
Outer Knob
Enables altitude reporting in addition to ATC
Code (Mode A/C).
ON
ALT
TUNE
PWR
SEL
Publication No. 150-047012
Rev. D
Page 55
Dec 2005
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CTR-352 Controls (ARINC-410 Octal Interface continued…)
CHELTON
ATC
TST - Test Mode
1. Outputs a Test or Self Test discrete Signal to
the radio.
ATC
1200
TST
SBY
ON
Note 1: The function of the Test/Self Test signal
varies with regard to the installed radio.
Please refer to the operation manual
specific to the radio.
Note 2: The code may be changed while in Test
Mode.
ALT
TUNE
MODE
PWR
SEL
Outer Knob
Note 3. The selected Transponder ID may be
changed while in Test Mode in order that
both Transponder systems may be put test
mode
Note 4. The VFR Quick Tune feature is not
available in Test Mode.
Note 5. The Altitude Reporting (Mode A/C) is active
when the code is 1200. For all other codes
reporting is Mode A only. This allows the
operator to test reporting modes separately
if supported by the radio.
CHELTON
ATC
CURSOR CONTROL
The Cursor is a white rectangle that surrounds the
currently selected field.
ATC
1200
The left inner knob moves the Cursor between the
Transponder System ID and the ATC Code.
Note: The Cursor will return to the ATC Code field
after 5 seconds of inactivity on any other field.
TST
MODE
Inner Knob
Page 56
Dec 2005
SBY
ON
ALT
TUNE
PWR
SEL
Publication No. 150-047012
Rev. D
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
ATC CODE CONTROL
CHELTON
If the Cursor is focused on the ATC Code field,
changes of the right inner knob will change the two
lower digits of the display.
ATC
Changes of the right outer knob will change the two
upper digits of the display.
ATC
1200
TST
SBY
ON
Note: Clockwise rotation increases the number
while counter-clockwise rotation will decrease
the number.
ALT
TUNE
MODE
Outer Knob
PWR
SEL
CHELTON
Inner Knob
VFR QUICKTUNE
ATC
If the pushbutton is held for at least one second the
ATC Code “1200” will be selected. IF the
pushbutton is release before one second the code
will return the previous value.
ATC
TST
1200
SBY
ON
MODE
PWR
SEL
Publication No. 150-047012
Rev. D
Note: This function is available in all modes except
Test (TST) regardless of the Cursor position.
ALT
TUNE
Pushbutton
Page 57
Dec 2005
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CHELTON
ATC
TRANSPONDER SELECTION
If the Cursor is focused on the Selected
Transponder Id field, changes of the right inner or
outer knob will change the displayed Selected
Transponder Id.
ATC
1200
Note: The Cursor will return to the ATC Code field
after 5 seconds of inactivity on any other field.
TST
SBY
ON
ALT
TUNE
MODE
Outer Knob
PWR
SEL
Inner Knob
CHELTON
ATC
IDENT PUSHBUTTON
To activate the transponders IDENT function, press
and release the left pushbutton.
ATC
1200
The transponder should indicate the IDENT
function by sending in the REPLY LAMP/IDENT
which is annunciated on the Control Display Screen
in green.
IDENT
TST
MODE
Pushbutton
Page 58
Dec 2005
SBY
ON
ALT
TUNE
PWR
SEL
Publication No. 150-047012
Rev. D
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CHELTON
SPECIAL ATC CODES
ATC
1200 – VFR Code for any altitude
7500 - Hijack Mode
ATC
TST
7600 – Loss of Communications
7700
SBY
ON
MODE
7700 – Emergency (received by secondary
surveillance radio sites at all times.
ALT
TUNE
Note: 7500, 7600, and 7700 Codes are
annunciated with a red background as they
indicate a critical condition. Refer to the
Federal Aviation Regulation, Airman’s
Information Manual (FAR-AIM) for a complete
description of special ATC Codes.
PWR
SEL
Publication No. 150-047012
Rev. D
Page 59
Dec 2005
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
Operating the CTR-352
ARINC-410 (Octal) Interface
1. Set the MODE SELECTOR to ON.
2. If the code displayed is not the one desired, rotate the CURSOR CONTROL until the ATC Code
surrounds CURSOR BOX. Rotate the right inner knob to adjust the lower two digits from 00-77. Rotate
the right outer knob to adjust the upper two digits from 00-77.
3. If the VFR code is desired press and hold the right pushbutton until “1200” is displayed.
4. To enable Altitude Reporting on aircraft equipped with an optional digitizing pressure encoder rotate the
MODE SELECTOR to ALT.
5. If it becomes necessary to suppress all replies from the ATC ground station, rotate the MODE
SELECTOR to SBY.
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Dec 2005
Publication No. 150-047012
Rev. D
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
CTR-352 Notes
1. When changing the ATC code, care should be made so as to avoid inadvertently selection of codes
7500, 7600, and 7700. For example, tuning upwards from 2700 to 7200 (rather than downward which
would pass through the emergency frequencies) will help avoid triggering automated grounds stations.
2. Pressing and holding the left pushbutton (PWR) for more than 1 second will trigger the system to
shutdown. A warning screen will display a countdown. Releasing the PWR button before the count has
expired will return the unit to the display screen active prior to initiating the shutdown.
Should the system become unresponsive, a hardware failsafe shutdown can be initiated. Under this
circumstance, press and hold the PWR button for 12-15 seconds. There is no indication other than
actual system shutdown and an audible click.
Publication No. 150-047012
Rev. D
Page 61
Dec 2005
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
ATC System Block Diagram (Typical)
ANTENNA
Pressure
Encoding
Altimeter
ATC Transponder 1
CTR-352
ANTENNA
ATC Transponder 2
Pressure
Encoding
Altimeter
Page 62
Dec 2005
Publication No. 150-047012
Rev. D
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
FliteLogic EFIS Tuning Features
General Description
The CVC-152, CVN-252, and CCN-955 are designed to integrate with the Chelton FliteLogic Electronics Flight
Instrument System (EFIS). The Control Displays receive COM and NAV tuning frequencies from the EFIS
database to reduce pilot workload.
Operating the Control Displays with EFIS
1. On the EFIS, display the information for the facility (see Waypoint Information (NavData), page 5-38
EFIS Manual).
2. On the EFIS, turn the control knob to highlight the desired frequency.
3. Menu functions will appear as appropriate to send the frequency to the com or nav radios.
3. On the EFIS, press TO COM1 or TO COM2 (or TO NAV1 or TO NAV2) to send the frequency to the
standby position of the COM (or NAV) radio.
4. On the Control Display, when in ARINC410 mode, observe the standby frequency flashes and the
frequency instantly changes.
5. On the Control Display, when in Series III or FliteLine mode, observe the standby frequency briefly
flashes the word EFIS for up to 2 seconds while the frequency synchronizes between the Control
Display and Radio.
4. On the EFIS, Press BACK or EXIT when finished.
5. On the Control Display, press the frequency transfer button (right pushbutton) to move the frequency
from standby to active.
EFIS and Control Display Integration notes:
1. The standby area will not flash when in COM and NAV modes where the actual standby frequency is
not normally displayed
a. NAV – HLD, BRG, RAD,
b. COM –
2. The control display executes the last EFIS frequency update upon entering a mode in which the standby
frequency is displayed.
Publication No. 150-047012
Rev. D
Page 63
Dec 2005
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
Configuration Status Page (all units)
The Configuration Status Page offers the pilot an efficient means to verify the installation options that affect the
user operation of the Control Display. For additional information refer to the Installation Manual, FliteLine Control
Displays, Part Number 150-047011.
Configuration Status Operation
CHELTON
COM/NAV
GENERAL
Unit Type COM/NAV
NVG NO
LIGHTING 5VAC
VOLUME YES
DME HOLD YES
MODE
VOL
pushbutton
Page 64
Dec 2005
PWR
SEL
ƒ
The Status Page can be entered any time (even
during flight) by simultaneously pressing both the
right and left pushbuttons.
ƒ
Status Items in gray are either not configurable or
are factory configured items. Items in cyan are
configured by the installer. No items are
configurable during flight.
ƒ
A right or left arrow in the page title (top)
indicates addition status pages. To change
pages rotate the Mode Select Knob (left outer) to
the desired page.
ƒ
To exit the status page rotate the volume control
knob (left inner) in either direction. If the pilot
does not exit the Configuration Status Page
ƒ
The Right Knobs have no function in the
Configuration Status Pages.
TUNE
pushbutton
Publication No. 150-047012
Rev. D
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
Options for Status Items on General Page:
UNIT TYPE
GENERAL
COM/NAV
T UNIT TYPE NAV
COM
NVG NO
NAV
VOLUME YES
ADF
LIGHTING 5VAC
Notes:
U DME HOLD NO
INTERFACE
SERIES III
ARINC 410
FLITELINE
NVG
YES
NO
DME HOLD
YES
NO
LIGHTING
5VDC
28VDC
5VAC
VOLUME
YES
NO
The DME HOLD field applies only to the CCN-955 and CVN-252.
Options for Status Items on Interface Page:
INTERFACE COM FREQ
S  INTERFACE 
Series III
RANGE A (118.000-151.975 MHZ)
T INTERFACE SERIES III
ARINC410
RANGE B (118.000-136.975 MHZ)
BCD
RANGE C (118.000-135.975 MHZ)
RANGE D (117.000-135.975 MHZ)
RANGE E (116.000-151.975 MHZ)
Notes:
UNIT ID
None
The COM FREQ and UNIT ID fields do not apply to the Series III Interface;
those items are automatically set by the radio.
S  INTERFACE 
T INTERFACE ARINC410
UNIT ID 1
T COM FREQ RANGE A
U (118.000MHz-151.975MHz)
UNIT ID field applies only to the ARINC 410 interface. The id is set by the
installer to match the id of the radio.
The COM FREQ range field applies only to the CCN-955 and CVN-152 with the
ARINC 410 interface. The range is set by the installer to match the capabilities
of the radio.
The FliteLine ADF Control Display may be configured as Series III or BCD.
BCD only applies to the ADF Display.
Options for Status Items on MISC (Miscellaneous) Page:
HOBBS
TEMP
S 
MISC
HOBBS 78 HRS
TEMP 30C
Notes:
Hobbs and Temp are for the FliteLine Control Display only.
Publication No. 150-047012
Rev. D
Software and Firmware Version Numbers are displayed on this page as is the
full manufacturer part number.
Page 65
Dec 2005
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
Limitations
DME hold must be prominently displayed in the normal forward field of view of the flight crew any time DME
HOLD is selected.
Page 66
Dec 2005
Publication No. 150-047012
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FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
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