Narco Avionics NAV122D User manual

NARCO AVIONICS
NAV122D, NAV122D/GPS
TSO’d NAVIGATION
SYSTEM
Installation Manual
03128-0620
NARCO AVIONICS INC.
270 COMMERCE DR , STE 200., FORT WASHINGTON PA 19034 (215)-643-2900 FAX [phone]
www.narcoavionics.com
COPYRIGHT, NARCO AVIONICS INC., 2007
PRINTED IN USA MARCH 2007 Rev 1.2

TABLE OF CONTENTS
SECTION TOPIC PAGE
NUMBER NUMBER
1. INTRODUCTION 1-1
1.1 GENERAL 1-1
1.1.1 Manual Organization 1-1
1.2 PRODUCT DESCRIPTION 1-1
1.3 DESIGN FEATURES 1-2
1.4 PRODUCT SPECIFICATIONS 1-2
1.5 UNITS AND ACCESSORIES SUPPLIED 1-5
1.6 OPTIONAL ACCESSORIES 1-6
1.6.1 Miscellaneous Items NOT Supplied 1-6
1.7 OPERATOR LICENSE REQUIREMENT 1-6
1.8 OPERATION 1-7
LIST OF TABLES
TABLE TITLE PAGE
NUMBER NUMBER
1.1 NAV SYSTEM CHARACTERISTICS 1-1
1.2 GENERAL SPECIFICATIONS 1-2
1.3 VOR/LOC RECEIVER 1-3
1.4 GLIDE SLOPE 1-3
1.5 EXTERNAL INDICATOR AND AUTOPILOT LOADS 1-4
1.6 INDICATOR IMPEDANCE AND DEFLECTION 1-4
1.7 UNITS AND ACCESSORIES SUPPLIED 1-5
1.8 INSTALLATION KIT PARTS LIST 1-6
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INTRODUCTION
SECTION 1
1. INTRODUCTION
1.1 GENERAL
In support of the NARCO Avionics NAV122D, NAV122D/GPS navigation systems, this manual provides
detailed installation procedures.
“This manual is intended for use only by persons who are qualified to service the equipment described in
this manual pursuant to current regulatory requirements.”
1.1.1 Manual Organization
Organized into two major sections, the manual provides the following:
Section 1 Introduction -general information required in planning the installation.
Section 2 Installation -detailed procedures for performing the mechanical and electrical
installation.
1.2 PRODUCTION DESCRIPTION
Functions of the system covered within this manual are shown in Table 1.1.
TABLE 1.1 NAV SYSTEM CHARACTERISTICS
FUNCTION \ NAV SYSTEM NAV122D NAV122D/
GPS
NAV122D/
GPS
UNIT PART NUMBER 03128-0300 03128-0301 03128-0302
VOR/LOC Receiver X X X
Glide Slope Receiver X X X
VOR/LOC and GS Converters X X X
VOR/LOC and GS Displays X X X
ARINC 2/5 Channeling X X X
GPS Interface (L/R, T/F, Nav Flag, SIN/COS) - - X
GPS Interface (L/R, T/F, Nav Flag, Resolver) - X -
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NARCO AVIONICS NAV122D, NAV122D/GPS
1.3 DESIGN FEATURES
Multiple functions to simplify installation.
ARINC Panel cutout, 3” instrument hole.
Direct replacement of existing NAV122 (minus marker RCVR)
Easily replaces NAV111/NAV112 receivers (cable modification required)
The NAV122D/GPS can be used as the external CDI display required in a IFR certified GPS installation
Meets the following TSO’s:
C-40c VOR TSO
C-36e Localizer TSO
C-34e Glide Slope TSO
1.4 PRODUCT SPECIFICATIONS
TABLE 1.2 GENERAL SPECIFICATIONS
GENERAL NAV122D
Mechanical
Physical Dimensions Figure 2-3
Weight NAV122D 2.5 Lbs.
Weight NAV122D/GPS 2.6 Lbs.
Electrical
Supply Voltage (see note 1) 13.75VDC
Current, less pilot lamps, 14V 350mA
Current, less pilot lamps, 28V (see note 2) 400mA
Pilot lamp current 14V 250mA
28V 250mA
Notes: 1. Voltage Converter required for 28VDC installations.
2. With MP 10, 28 to 14Vdc Voltage Converter - 0.60 Ampere.
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INTRODUCTION
SECTION 1
1.4 Continued
TABLE 1.3 VOR/LOC RECEIVER
VOR/LOC RECEIVER NAV122D
Frequency Range (in MHz) 108.00 to 117.95
200 channels
Sensitivity (6dB S + N/N) 2.0µV
(Full VOR Flag) 2.0µV
Spurious and Image Rejection 80dB min
Selectivity 6dB ±19kHz
60dB ±42kHz
AGC Flatness (10µV to 10kµV) 1.0dB max
Audio Output (500ohm load) 50mW
VOR Accuracy 2.7°
LOC Accuracy ±5µa
DME Channeling Code ARINC 2 out of 5
TABLE 1.4 GLIDE SLOPE RECEIVER
GLIDE SLOPE RECEIVER NAV122D
Frequency Range (in MHz) 329.150 to 335.00
Sensitivity (Full GS Flag) 20µV
Spurious and Image Rejection 60dB
Selectivity 6dB ±19kHz
60dB ±42kHz
AGC Flatness (20µV to 10kµV) 3dB
GS Accuracy ±5µa
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NARCO AVIONICS NAV122D, NAV122D/GPS
1.4 Continued
TABLE 1.5 EXTERNAL INDICATOR AND AUTOPILOT LOADS
AUTOPILOT INDICATOR NAV122D
NAV122D/GPS
Loading
VOR-LOC: Left-Right one, 1k ohm load
To-From Flag one, 1k ohm load
GS: Up-Down one, 1k ohm load
Warning Flag one, 1k ohm load
Output
VOR-LOC: Left-Right LOC 90mV for .093
ddm *
VOR 150mV for 10°
course change
To-From Flag 250mV
GS: Up-Down 78mV for .091
ddm *
Warning Flag 250mV
* ddm- Difference in depth of modulation
TABLE 1.6 INDICATOR IMPEDANCE AND DEFLECTION CHARACTERISTICS
MOVEMENT IMPEDANCE DEFLECTION
CHARACTERISTIC
LEFT/RIGHT 1000 OHMS 150mV full scale
TO/FROM 200 OHMS 250mV full scale
UP/DOWN 1000 OHMS 150mV full scale
GS FLAG 1000 OHMS 250mV full scale
ENVIRONMENTAL
The NAV122D and NAV122D/GPS are designed and tested to meet the appropriate categories of RTCA
DO-160C. The environmental qualification form can be found in appendix A
Operating temperature -20°C to +55°C
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INTRODUCTION
SECTION 1
1.4.1 Explanation
The NAV122D and NAV122D/GPS are designed to be instrument panel mounted within the cabin
environment of fixed and rotary wing aircraft using piston or turbine engines, in single and multiengine
configurations. It is designed for non-pressurized aircraft operating up to 35,000 feet as well as for
pressurized aircraft. This equipment requires direct current, but may be installed in aircraft having
additional on-board alternating current sources.
1.5 UNITS AND ACCESSORIES SUPPLIED
The following listings may be used to: 1.) check the contents of your order
2.) to order additional Units or components.
Table 1.7 is used for ordering Units, refer to the Units Part Number and its Description.
Additional Installation Kits or detail parts of a Kit may be ordered from the Installation Kit Parts List. Item
Part Numbers are provided for service replacement purposes and are not used when ordering a complete
Installation Kit.
Table 1.8 Lists the contents of the installation kits which can be used for ordering parts for a bench test
harness.
Refer to Section 1.6, Optional Accessories, for additional items to complete the avionics system.
TABLE 1.7 UNITS AND ACCESSORIES SUPPLIED
UNIT PART
NUMBER
UNIT AND DESCRIPTION* SUPPLIED
WITH
INSTALLATION
KIT PART
NUMBER
01535-0101 NAV122D VOR, LOC/GS 03128-0500
01535-0102 NAV122D/GPS VOR, LOC/GS, (GPS Interface) 03128-0501
01535-0103 NAV122D/GPS VOR, LOC/GS, (GPS Interface, no resolver) 03128-0502
*NAV’s are 14V only. Refer to Section 1.6 for 28Vdc to 14Vdc Voltage Converter.
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NARCO AVIONICS NAV122D, NAV122D/GPS
TABLE 1.8 INSTALLATION KIT PARTS LIST
ITEM PART
NUMBER DESCRIPTION QUANTITY
03128
0500 0501 0502
1 41364-0008 Connector, J810, 37 Pin 1 1 1
2 41307-0008 Hood, J810, Right Angle 1 1 1
3 41308-0004 Locking Assembly, J810 1 1 1
4 41152-0003 Connector, BNC 2 2 2
5 41372-0004 Contacts, Socket, Qty. 37 1 1 1
6 41444-0002 Connector, circular, J811 - 1 1
7 41445-0002 Contacts, J811 - 28 12
8 41446-0001 Cable clamp - 1 1
9 41444-0102 Jumper Plug Assembly * - 1 -
* Included with and to be used with Chassis level BACBCED and later only.
1.6 OPTIONAL ACCESSORIES
a) Power Converter...required only for 28V installations:
Narco Voltage Converter
MP 10 Voltage Converter, P/N 03710-0500, or equivalent.
b) Headphones - low impedance type, 300 to 1000ohms.
c) Audio Control Panel - NARCO CP 136M.
d) Circuit Breaker - Supplied by installing agency.
e) Straight, J810, Connector Hood - Order part number – 41307-0004.
f) Annunciator/Relay panel as required by the GPS / Annunciator
panel manufacturer (NAV122D/GPS only)
1.6.1 Miscellaneous Items NOT Supplied
a) Number 24 AWG stranded wire, as required.
b) Number 20 AWG stranded wire, as required.
c) Coaxial cable RG 58 C/U, as required.
d) Mounting hardware; refer to Section 2.
1.7 OPERATION LICENSE REQUIREMENT
There are no operator license requirements for this type of equipment.
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