Mid-Continent Instruments MD41, MD41-1498W, MD41-1494W, MD41-1484W, MD41-1488W Installation Manual And Operating Instructions
INSTALLATION MANUAL AND
OPERATING INSTRUCTIONS
MD41-( ) Series GPS Annunciation Unit
For Garmin GNS 430/430W/530/530W VHF
Communication and Navigation Management System
MD41-1484W 14VDC Horizontal Mount
MD41-1488W 28VDC Horizontal Mount
MD41-1494W 14VDC Vertical Mount
MD41-1498W 28VDC Vertical Mount
MID-CONTINENT INST. CO., INC MANUAL NUMBER 9016478
Revision History
ECO Rev. Date Detail
N/R 01/19/07 Initial release.
A 02/15/07 J1 connector was 9016475, now 9016479.
4828
B 03/12/07 Corrected section 4.1 to show proper pins,
corrected mating connector rear view.
C 4/24/07 Correct connector schematic pinout in section
1.2.5. Add –1494W and –1498W versions.
REV. C 2 April 24, 2007
TABLE OF CONTENTS
SECTION 1 GENERAL DESCRIPTION
1.1 INTRODUCTION
1.2 SPECIFICATIONS, TECHNICAL
1.2.1 PHYSICAL CHARACTERISTICS
1.2.2 ENVIRONMENTAL CHARACTERISTICS
1.2.3 SPECIFICATIONS, ELECTRICAL
1.2.4 FRONT PANEL CONTROLS AND ANNUNCIATIONS
1.2.4.1 CONTROLS
1.2.4.2 ANNUNCIATIONS
1.2.5 INTERFACE
1.2.6 EQUIPMENT LIMITATIONS
1.2.7 MAJOR COMPONENTS
SECTION 2 INSTALLATION CONSIDERATIONS
2.1 COOLING
2.2 EQUIPMENT LOCATION
2.3 ROUTING OF CABLES
SECTION 3 INSTALLATION PROCEDURE
3.1 GENERAL INFORMATION
3.2 UNPACKING AND INSPECTING
3.3 MOUNTING THE MD41-( )
3.4 INSTALLATION LIMITATIONS
SECTION 4 POST INSTALLATION CHECKOUT
4.1 PRE-INSTALLATION TEST
4.2 OPERATING INSTRUCTIONS
FIGURES LIST OF ILLUSTRATIONS
3.1 SCHEMATIC PINOUT, 15 PIN HIGH DENSITY D-SUB
3.2 OUTLINE DRAWING
3.3 INSTRUMENT PANEL MOUNTING
3.4 WIRING DIAGRAM, MD41-1484W/1488W/1494W/1498W
APPENDIX RTCA DO-160C ENVIRONMENTAL QUALIFICATION FORM
REV. C 3 April 24, 2007
SECTION 1 GENERAL DESCRIPTION
1.1 INTRODUCTION
The MD41-( ) is a compact, self-contained GPS Annunciation unit. This unit
displays status annunciation received from the Garmin GNS 430/430W/530/530W
series GPS navigation management systems.
Features include dual 20,000 hour lamps used for all annunciations along with
automatic photocell dimming. An external annunciation dimming adjustment is
provided for balancing low-level light conditions.
1.2 TECHNICAL SPECIFICATIONS
1.2.1 PHYSICAL CHARACTERISTICS
Mounting: Front mount, panel
Width: 2.45 inches
Height: 0.75 inches
Depth: 2.60 inches (max)
Weight: 0.2 pounds
1.2.2 ENVIRONMENTAL CHARACTERISTICS
TSO Compliance: TSO C129
Applicable Documents: RTCA DO-160C, DO-208
Operating Temperature Range: -55°C to +70°C
Humidity: 95% Non-Condensing
Altitude Range: 0 to 55,000 ft.
Vibration: RTCA DO-160C, Cat. M and N
Operational Shock: Rigid Mounting, 6G Operational
15 G Crash Safety
REV. C 4 April 24, 2007
1.2.3 ELECTRICAL SPECIFICATIONS
Design All Solid State
MD41-1484W (14VDC) 0.30 Amps
MD41-1488W (28VDC) 0.25 Amps
MD41-1494W (14VDC) 0.30 Amps
MD41-1498W (28VDC) 0.25 Amps
1.2.4 FRONT PANEL CONTROLS AND ANNUNCIATIONS
1.2.4.1 ANNUNCIATIONS
VLOC NAV or ILS information presented on the HSI or CDI
GPS GPS information presented on the HSI or CDI
MSG ON indicates message(s) active.
WPT ON indicates reaching the arrival waypoint.
TERM ON indicates aircraft is within 30 miles of departure or
arrival airport
APR ON indicates the approach is active.
INTG ON indicates GPS receiver detected a position error
or is unable to calculate the integrity of the position
1.2.5 INTERFACE
INTG annunciation Requires a logic low to annunciate
J1 Pin 1
WPT annunciation Requires a logic low to annunciate
J1 Pin 2 when in VOR/ILS mode
MSG annunciation Requires a logic low to annunciate
J1 Pin 3
TERM annunciation Requires a logic low to annunciate
J1 Pin 4
APR annunciation Requires a logic low to annunciate
J1 Pin 6
VLOC annunciation Receives ground from GNS 430/530
J1 Pin 7
GPS annunciation Receives ground from GNS 430/530
J1 Pin 8 when in GPS mode.
Lamp Test Receives ground from remote test switch
J1 Pin 10 to light all annunciations (optional connection)
J1 Pin 15 Ground
REV. C 5 April 24, 2007
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