ATD-300 - Private Pilots

ATD-300 - Private Pilots
MONROY
AEROSPACE
ATD-300
NEAR
FAR
MUTE
Monroy
RANGE
ALTITUDE
3nm +600
Traffic-Watch
BRT
DIM
OFF
ATD-300
Traffic-Watch
Operating Manual
No. MA300 Rev. 1.6
1-2004
Monroy Aerospace Corp.
P.O. Box 8217
Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006
www.monroyaero.com
ATD-300 Traffic-Watch Operating Manual
Dear Aviation Enthusiast:
Congratulations on the purchase of the ATD-300. We are sure
that you will enjoy the benefits of continuos traffic awareness
provided by this product that will enhance the safety of your
flights. You can be assured that it has been manufactured and
tested to high standards and that it will provide many years of
trouble free service. At Monroy Aerospace Corp. we strive to
provide General Aviation with value added products that will
heighten the joy of flying. We welcome your comments on the
product and thank you for its selection.
Jose' J. Monroy
Jose' J. Monroy
President
Page 1
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
Rev. 1.6
ATD-300 Traffic-Watch Operating Manual
Rev. 1.6
Table of Contents
1.0 Description ........................................................................ 3
2.0 Setting-up ……………………………………………….….... 4
2.1 Plug & Fly Set-up ………………....……………..….. 5
3.0 Controls and Display ………………………….….………… 6
4.0 Display Modes ........... …………………………………….... 7
5.0 Operation .........……...…………………………………...…. 8
5.1 Ground Check ........................................................ 8
5.2 Taxing .................................................................... 8
5.3 Departure/Approach .............................................. 8
5.4 En-route ................................................................. 8
6.0 Operational Notes..………………………………………….. 9
6.1 High Traffic Activity ................................................ 9
6.2 Range Indication .................................................... 9
6.3 Spotting Traffic ....................................................... 9
6.4 IDENT Squawk Altitude.......................................... 9
6.5 Transponder Code ................................................. 10
6.6 Voltage Indication .................................................. 10
6.7 Local Altitude Indication Warning .......................... 10
7.0 Installation.......…..………………………………......…...…. 11
7.1 Location ................................................................. 12
7.2 In Panel .................................................................. 13
7.3 Under Panel ........................................................... 14
7.4 Wiring ..................................................................... 15
8.0 Specifications……...............…………………………….….. 16
9.0 Troubleshooting………………………………………...….... 17
Warranty ………………………….………………………………. 18
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
Page 2
ATD-300 Traffic-Watch Operating Manual
1.0
Rev. 1.6
Description
The ATD-300 Traffic-Watch is a passive receiver capable of detecting transponder
replies from nearby aircraft and displaying their range and altitude on an 8-character dot
matrix yellow LED display. It also provides distinctive voice warnings in relation to traffic
proximity. The ATD-300 has a detection range of 5 nautical miles. The system consists
of a receiver/indicator unit, antenna, power cord and headphone cable. The receiver is
housed in a small aluminum box (2.75” x 0.75” x 5.0”) for easy location in the cockpit.
The ATD-300 provides distinctive voice warnings for traffic at different ranges. When set
in the FAR mode and traffic is within 3nm and +1,000ft of vertical separation "Traffic"
will be annunciated. As the traffic gets closer to about 1nm and within +1000ft of vertical
separation the message will change to "Traffic Nearby". When set in the NEAR mode
only traffic within 1nm and +500ft of vertical separation will be annunciated by "Traffic
Nearby". When set to MUTE there is no warning messages for any traffic, however
traffic range and MSL altitude will still be indicated. When there is no traffic activity the
ATD-300 will automatically indicate the host transponder MSL pressure altitude. A
screwdriver adjustable volume control is located on the bottom side of the unit. Audio
output to a speaker (8 ohms) or headphones (300 ohms) is provided on the rear of the
unit.
The ATD-300 features a built-in voltage-warning indicator that lets you know if the
aircraft supply voltage is out of range. This functions works on the background all the
time and is activate after engine start. If an out of range condition exist the ATD-300
annunciates it by voice and by text.
Note: The ATD-300 will not detect aircraft that do not have an operating
transponder. Mode A/C transponders outside a surveillance environment will not
produce replies so they will not be detected by the ATD-300. The ATD-300 is not a
substitute for continuous traffic surveillance, NOT ALL AIRCRAFT ARE
TRANSPONDER EQUIPPED.
Page 3
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
ATD-300 Traffic-Watch Operating Manual
Rev. 1.6
2.0 Setting up
The ATD-300 Plug & Fly feature allows the owner to operate the unit right away without
the need to have it permanently installed in the aircraft. See fig. 1 for set-up
1) Connect the provided rubber antenna to the rear BNC connector on the unit. Align
the antenna vertically.
2) Find a suitable space on top of the glare shield where the ATD-300 is accessible and
not blocking the pilot's view and the antenna is not in contact with the windshield or
airframe structure.
3) Clean well this glare shield location and stick one of the Velcro strips provided. Stick
the other strip to the bottom side of the unit. Make sure the strip does not block the
VOL adjustment hole.
Note: The ATD-300 can also be located on the overhead panel with the antenna
pointing down. However, depending on the surface the Velcro strips may not provide
long time support.
4) Plug the cigarette lighter power cord to the rear center connector of the unit. Plug the
other end to the cigarette lighter jack in the aircraft.
5) Plug the headphone cable mini-plug to the rear connector on the unit. Plug the other
end 1/4" plug to the aircraft headphone jack. Connect the pilot's headphone to the
pigtail phone jack on the cable.
Note: If the aircraft is equipped with an intercom system or BOSE ANR headsets
connect the 1/4 plug to the emergency headset jack for better results. The pilot's
headphones can be connected to their respective phone jacks in the aircraft.
6) Turn on the A/C master switch. Set the ATD-300 left switch to NEAR. Turn the unit
on (right switch up). After two seconds you should hear "Traffic Watch On". Adjust the
volume control on the bottom side if it is to high or to low, use a jeweler's screwdriver.
Clockwise rotation increases the volume. Repeat the above until desired audio level
is achieved
7) Affix the ATD-300 to the glare shield. Route the power and headphone cable so they
do not interfere with the operation of the aircraft.
Note: During the summer, the ATD-300 may get too hot to the touch if exposed to the
sunlight when the aircraft is parked outside. It is recommended that it be covered
with a chart or equivalent when parked outside. If the unit gets too, hot it may not
work properly until it cools down.
.
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
Page 4
ATD-300 Traffic-Watch Operating Manual
NEAR
FAR
MUTE
Monroy
RANGE
Rev. 1.6
ALTITUDE
3nm +600
BRT
Traffic-Watch
DIM
OFF
ATD-300
PLUG & FLY SET-UP
Fig. 1
Rear Panel
MADE IN USA
PHONE
+
ANTENNA
11 - 28V DC
SPEAKER
Monroy Aerospace
Coral Springs, FL USA
To aircraft headphone jack
To pilot headphone plug
To aircraft cigarette lighter jack
Page 5
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
ATD-300 Traffic-Watch Operating Manual
Rev. 1.6
3.0 Controls
Operation of the ATD-300 is simple and straightforward. The following describes the
control and display functions.
NEAR
FAR
MUTE
Monroy
RANGE
ALTITUDE
3nm +600
Traffic-Watch
BRT
DIM
OFF
ATD-300
BRT Mode
When the right switch is set to the upper position the display is set to its maximum
brightness. This mode is normally used during daylight flight.
DIM Mode
When the right switch is set to the mid position the display is set to its minimum
brightness. This mode is normally used during night flight.
Traffic Warning Envelope.
FAR
"Traffic"
+1000ft
NEAR +500ft
"Traffic Nearby"
----1nm----500ft
--------------------- 3nm-----------------
-1000ft
FAR Mode
When the left switch is in the mid position (FAR) the traffic voice warnings are initiated
whenever traffic is within 3nm and less than +1000ft of the host aircraft. The female
voice will annunciate: "Traffic". If the traffic or the host is not Mode C equipped the
warning will be heard whenever the traffic is within 3nm regardless of the altitude
difference. If traffic within 1nm and less than +1000ft it will annunciate "Traffic Nearby".
NEAR Mode
When the left switch is in the upper position (NEAR) the traffic voice warnings are
initiated whenever traffic is within 1nm and less than +500ft of the host aircraft. The
female voice will annunciate "Traffic Nearby". If the traffic or the host is not Mode C
equipped the warning will be heard whenever the traffic is within 1nm regardless of the
altitude difference.
MUTE Mode
MUTE deactivates all traffic warnings but not the voltage warnings. In the MUTE mode
traffic altitude is shown as pressure MSL altitude instead of relative altitude. This can be
differentiated on the display by the lack of + or – symbol in front of the altitude number.
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
Page 6
ATD-300 Traffic-Watch Operating Manual
Rev. 1.6
4.0 Display Modes
The ATD-300 switches automatically to different display modes.
Host Altitude: 8,600ft MSL at 29.92"
NEAR
FAR
MUTE
Monroy
RANGE
ALTITUDE
ALT 8600
Traffic-Watch
NEAR
BRT
DIM
OFF
ATD-300
FAR
RANGE
ALTITUDE
CODE1200
MUTE
Monroy
Traffic-Watch
BRT
DIM
OFF
ATD-300
When there is no traffic indicated the ATD-300 reverts to indicate the onboard
transmitted transponder altitude. This is the actual data received by ATC. If there is no
Mode C altitude data transmitted the ATD-300 indicates the transponder Mode A code.
Traffic Range and Relative Altitude: 5nm at 700ft above.
NEAR
FAR
MUTE
Monroy
RANGE
ALTITUDE
5nm +700
Traffic-Watch
NEAR
BRT
DIM
OFF
ATD-300
FAR
MUTE
Monroy
RANGE
5nm
ALTITUDE
BRT
DIM
Traffic-Watch
OFF
ATD-300
When there is traffic within 5nm and +1000ft the ATD-300 will automatically switch to
the traffic display mode. If the traffic has no Mode C altitude data the ATD-300 indicates
range only.
Traffic Range and MSL Altitude: 5nm at 9,300ft MSL
NEAR
FAR
MUTE
Monroy
RANGE
ALTITUDE
5nm 9300
Traffic-Watch
NEAR
BRT
DIM
OFF
ATD-300
FAR
MUTE
Monroy
RANGE
5nm
ALTITUDE
BRT
DIM
Traffic-Watch
OFF
ATD-300
When the left switch is set to MUTE it is possible to see all surrounding traffic within
5nm up to 30,700ft MSL. The ATD-300 will also revert to this display mode when there
is no host altitude available. If the traffic has no Mode C altitude data the ATD-300
indicates range only.
Low or High Voltage Condition
NEAR
FAR
MUTE
Monroy
RANGE
ALTITUDE
LOW VOLT
Traffic-Watch
BRT
NEAR
DIM
OFF
ATD-300
FAR
MUTE
Monroy
RANGE
ALTITUDE
HI V O L T
Traffic-Watch
BRT
DIM
OFF
ATD-300
Whenever there is a low or high voltage condition on the bus the ATD-300 will alert
visually and by voice of this condition. This function is activated after engine start and
runs on all the time on the background. It has priority over other display modes.
Voltage Indication
NEAR
FAR
MUTE
Monroy
RANGE
ALTITUDE
13.7 VDC
Traffic-Watch
BRT
NEAR
DIM
OFF
ATD-300
FAR
MUTE
Monroy
RANGE
ALTITUDE
27.4 VDC
Traffic-Watch
BRT
DIM
OFF
ATD-300
When there is no host transponder or traffic data the ATD-300 reverts to indicate bus
voltage. This is normally shown during power up and taxing.
Page 7
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
ATD-300 Traffic-Watch Operating Manual
Rev. 1.6
5.0 Operation
5.1 Ground Check
a) Set the onboard transponder to OFF.
b) Set the ATD-300 left switch to NEAR. Turn the ATD-300 on. After initialization you
should hear the phrase "Traffic-Watch On". The bus voltage should be indicated
after this. Note: if your transponder is actively replying or if there is traffic activity in
the area the bus voltage may not be indicated.
c) Set the transponder to ALT and let it warm for one minute. You may see the entered
transponder code for a brief period and then the transponder transmitted pressure
altitude. Note: There may be about one minute delay after the reply light is blinking
due to the transponder altitude encoder warm-up. If the transponder reply light is
not blinking, the transponder is not replying thus no local pressure altitude
will be indicated but instead bus voltage or nearby traffic will be indicated.
Local pressure altitude should be the same as altimeter altitude when set to 29.92". If
different, allow up to five minutes for the transponder altitude encoder to stabilize.
5.2 Taxing
When taxing, it is most convenient to set the ATD-300 to MUTE. There maybe traffic on
the ground that can cause annoying voice warnings that can distract you from radio
communications. Traffic in the area will still be displayed in MSL pressure altitude.
5.3 Departure/Approach
a) Upon departure or approach to the airport traffic area set the left switch to NEAR (up
position). This will alert you for traffic within 1nm +500 feet with the female voice
message “Traffic Nearby”.
b) When alerted scan at the horizon instead of looking up or down. Any traffic within
+500 feet will appear close to the horizon line. Small aircraft beyond 1nm are difficult
to spot during daytime.
c) Turn on landing lights to enhance visibility of your own aircraft.
5.4 En-route
While en-route you can set ATD-300 to the FAR position for an earlier indication of
traffic activity. This will alert you for traffic within 3nm +1000 feet with the female voice
message “Traffic".
When traffic alerted, do not perform any evasive maneuvers unless visual contact
is established. TCAS II equipment (airlines) may have already indicated an evasive
maneuver to the traffic's crew that may be in conflict with your actions. Also differential
altimetry errors of up to 300 feet can be encountered between traffic's encoder and the
onboard encoder that can show the traffic at opposite altitude.
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
Page 8
ATD-300 Traffic-Watch Operating Manual
Rev. 1.6
6.0 Operational Notes
6.1 High Traffic Activity
In areas of high traffic activity the display will show multiple traffics in an alternating
fashion. This is most common for traffic between 4 and 5nm. Display preference is
given to the closest traffic by distance. As traffic gets closer background traffic display is
reduced or eliminated.
6.2 Range Indication
The ATD-300 determines range by traffic signal strength. Unlike radar signal time delay
range determination signal strength method is subject to some variables. Among them:
traffic transponder power output, altitude difference, relative attitude, antenna location
and installation. Because of these variables it is impossible for a passive system to have
fractional nm accuracy but rather a range of values. The ATD-300 is calibrated to cope
with the above variables and provide you with a range of values rather than an
inaccurate distance value. The table below shows the traffic's range of distance values
for traffic indicated range.
Indicated Range
0nm
1nm
2nm
3nm
4nm
5nm
Actual Traffic Distance (D)
100ft<D<1nm
1nm<D<2nm
2nm<D<3nm
3nm<D<4nm
4nm<D<5nm
5nm<D
When the ATD-300 is used in the portable configuration the range indication is subject
to more variation due to shadowing effects by the cockpit environment. These are
mostly eliminated with the use of an external antenna.
6.3 Spotting Traffic
Traffic indicated may not be visible unless at 1nm or closer. This is most common for
small aircraft during daylight. If alerted by the message "Traffic Nearby" look at the
horizon rather than up or down and turn the landing lights on.
6.4 IDENT Squawk Altitude
Although unusual, some ATC rarely assigned transponder codes may cause the ATD300 to interpret them as altitude (squawk altitude). This may cause the ATD-300 display
to alternate between the actual host altitude and the squawk altitude when reading local
altitude ALT(local altitude). This will not impair the traffic warning ability but you may get
warnings for traffic at the squawk altitude. The ATD-300 will display IDENT any time
there is a squawk altitude conflict. To clear the conflict; push the IDENT button on your
transponder. After this the display will indicate the transponder code for 20 seconds and
clear the conflict. ATC may have asked you to ident for these codes so you may not see
the IDENT indication. Some traffic may have a squawk altitude code too, but because of
the ATD-300 traffic altitude filtering you will only see the altitude closest to you.
Page 9
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
ATD-300 Traffic-Watch Operating Manual
Rev. 1.6
6.0 Operational Notes (cont.)
6.5 Host Transponder Code Indication
The ATD-300 will indicate the onboard transponder squawk code for 20 seconds
whenever the transponder Ident button is depressed. This verifies that the transponder
Ident and code functions are working properly. This procedure works best when
airborne and within range of a ground ATC radar.
6.6 Voltage Indication
To read bus voltage set the following:
1. Set transponder to STBY
2. If there is no traffic in the area the ATD-300 will display bus voltage within 15 sec.
3. Set transponder back to ALT.
If there is an over-voltage or under-voltage condition the ATD-300 will display it
immediately and annunciate it regardless of any switches combination. This can be
tested by the following procedure:
1. Engine must be running
2. ATD-300 must be on.
3. Pull the alternator/generator field circuit breaker (both engines for twins).
4. After 5 seconds the display will indicate LOW VOLT.
5. After 15 seconds or less voice will annunciate "Check Voltage"
6. Push the circuit breaker in and the warnings should go away.
To disable an active voltage warning just turn off and on the unit. The function will not
be activated unless normal voltage is established.
Voltage Alarm Thresholds
14 Volts systems:
LOW VOLT: below 12.0 Volts
HI VOLT: above 14.8 Volts
28 Volts Systems: LOW VOLT: below 24.0 Volts
HI VOLT: above 29.6 Volts
The ATD-300 will recognize automatically your voltage system.
6.7 Warning: Local Altitude Indication
The ATD-300 decodes and displays the uncorrected pressure altitude data from your
transponder when displaying ALT(altitude). The ATD-300 local altitude reading may not
be the same as that indicated by the altimeter when the atmospheric pressure is
different than 29.92". This is because transponder altitude encoders are calibrated to
29.92". This altitude indication may be as much as 1,000ft different from a corrected
altimeter and should not be used for altitude guidance.
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
Page 10
ATD-300 Traffic-Watch Operating Manual
Rev. 1.6
7.0 Installation
Because of its compact size the ATD-300 can be located anywhere in the cockpit, figure
2 suggest some locations. See figures 3, 4, 5 and 6 for installation details. The following
recommendations will assure good performance.
1. Locate the unit within pilot's view and reach.
2. Keep antenna cable as short as possible, no longer than 10 feet.
3. Keep the ATD-300 antenna no closer than 2 feet from the transponder antenna.
4. If the antenna is installed on a non-metal structure make sure that a 6" x 6" or bigger
ground plane is provided. This will also help on supporting the antenna.
5. Antenna should be vertically oriented. Do not use horizontal polarization.
6. Whenever possible install the antenna on the bottom side of the fuselage as forward
as possible. If not, top mounted antenna is acceptable.
7. Whenever possible connect ATD-300 audio output to the aircraft audio panel unswitched input as shown on fig. 6.
8. The ATD-300 can be connected to an unused DME antenna already installed.
9. The ATD-300 cannot share the transponder antenna in any way.
.
Page 11
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
ATD-300 Traffic-Watch Operating Manual
Rev. 1.6
INSTRUMENT PANEL LOCATIONS
Glare Shield Mounting
In Panel Mounting
Under Panel Mounting
Fig. 2
ANTENNA LOCATIONS
The antenna location described below will provide good forward coverage. For twins optimum
performance location is at the bottom side of the nose section. For wet fuselage amphibian
aircraft locate the antenna on top. The antenna should not be closer than 2 feet or farther than
200 feet from a transponder antenna.
ATD-300
Cable RG-142 or 58A/U
No longer than 10 feet
Bottom mounted antennas provides best overall
performance. For low wing airplanes: best if mounted
forward of the wing.
Fig. 3
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
Page 12
ATD-300 Traffic-Watch Operating Manual
Rev. 1.6
IN-PANEL MOUNTING
Panel cut-out
R 3/32"
0.375”
2.75”
0.25”
5/32”Dia.
0.75”
0.25”
3.25”
Instrument Panel
Tinnerman nut
Three-hole
side brackets
2.6”
5.0”
All screws
no longer than ¼”
AN526C-632-R4
All screws
no longer than ¼”
AN526C-632-R4
C.G. weight 0.6 lb
Fig. 4
Page 13
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
ATD-300 Traffic-Watch Operating Manual
Rev. 1.6
UNDER PANEL MOUNTING
Instrument panel bottom
NEAR
RANGE
ALTITUDE
3nm +600
FAR
FAR
MUTE
Monroy
Traffic-Watch
BRT
LOW
DIM
OFF
ATD-300
Screws no longer than ¼
AN526C-632-R4
Side brackets
P/N M5008-1
2.6”
5.0”
All screws
no longer than ¼”
AN526C-632-R4
C.G. weight 0.6 lb
All screws
no longer than ¼”
AN526C-632-R4
Audio Level Adjust
(bottom side)
Fig. 5
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
Page 14
ATD-300 Traffic-Watch Operating Manual
Rev. 1.6
WIRING DIAGRAM
For aircraft with audio system
Audio Panel
Use un-switched audio panel input.
For KMA 24 Audio Panel use pin T
1 AMP
CB
Ground
Dedicated
8 Ohms
Speaker
Ground
8 ohms output
All wire 22 AWG
DO NOT PARALLEL SPEAKER
WITH OTHER SYSTEMS
ATD-300
Avionics bus
+14 or +28 Volts
For aircraft with no audio system
300 ohms output
Existing
Cockpit
Speaker
SPKR/PHONE
DC POWER
50 ohms coax cable: RG-58A/U
ANTENNA
Note: All wires to be secured to the
coax cable to prevent disconnection
Conventional transponder
or DME antenna
Fig. 6
Page 15
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
ATD-300 Traffic-Watch Operating Manual
Rev. 1.6
8.0 Specifications
Frequency:
1090 MHz
MTL
-60dBm
Transponder Types
Mode A/C/S
Decoding Altitude Range:
-1200 to 30, 700 feet
Max. Range:
5nm
Range Accuracy:
20% error with external antenna
Host Transponder MTL:
-25dBm
Maximum Signal Input:
+30dBm pulse
Antenna Impedance :
50 Ohms
Audio Output Power:
2 Watts @ 8 Ohms (adjustable)
Speaker Output Impedance:
8 Ohms
Phone Output Impedance:
300 Ohms
Message Repetition Rate:
Every 20 Seconds
Voltmeter Accuracy:
1%
Supply Current:
0.18 amps @ 14VDC
0.09 amps @ 28VDC
Operating Temperature:
-20 deg C to +55 deg C
Operating Altitude:
-1000 feet to 25,000 feet MSL
Enclosure Type:
Black extruded aluminum box
Unit Weight:
10 Ounces
Unit Dimensions
2.75" W x 0.75" H x 5.0" D
Installation Depth:
6.5 inches
DO-160D Tested
Sec. 4, 5, 6, 7, 8, 16, 18, 19
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
Page 16
ATD-300 Traffic-Watch Operating Manual
Rev. 1.6
9.0 Troubleshooting
There are no serviceable components in this product. The test equipment needed to
test is very specialized and it is not commonly found in avionics shop. If you encounter
difficulties please check the following suggestions:
1) If no power, check that the cigarette lighter jack is providing power by looking at the
red LED on the power cable plug. It should be on whenever there is power. If not try
another cigarette lighter jack.
2) If no voice output, verify that the VOICE switch is not in the MUTE position. Plug a
miniature plug headphone on the back of the unit and turn the unit on. If message
"Traffic-Watch On" is not heard adjust the VOL control on the bottom side of the unit,
clockwise rotation increases volume. Try setting intercom to ISOLATE.
3) If the unit gets too hot to the touch the internal timing may be affected and it may not
decode properly all traffic replies. Keep it away or shield the unit from sunlight.
4) If you suspect occasional false alarms check the following: Turn off any onboard cell
phone. Turn off the strobe lights. Some unshielded strobe light wiring may cause
spurious emissions that may be visible on a weather lightning scope. Relocate the
ATD-300 to a different location on the glare shield. An external antenna eliminates
most false alarm problems created by cell phones or other onboard equipment.
Keep in mind that most GA traffic will not be visible during daytime when farther than
1nm. Ground radar stations use transponder beacons on the ground (Parrots) to
check for antenna azimuth and proper radar operation. When flying near one of
these beacons you may get traffic warnings but no visible aircraft. The ATD-300 can
easily detect traffic at lower altitude or on the ground that is beyond ground radar
horizon line coverage thus not visible to ATC.
5) If the ATD-300 suddenly indicates 0nm +0 altitude it is most likely interpreting the
onboard transponder as traffic. Make sure the antenna is vertically oriented.
Relocate the unit to a clear area on the glare shield. Pull the transponder from its
tray and spray contact cleaner on the transponder contacts and on the tray contacts.
Reinstall transponder. Clean transponder antenna from any carbon or oil deposits.
6) At times the ATD-300 will show the range and altitude of two aircraft in an alternate
fashion. This is normal and helps you determine if there is more than one threat.
Display priority is given to traffic at the closest indicated range.
7) The ATD-300 local altitude reading may not be the same as that indicated by the
altimeter when the atmospheric pressure is different than 29.92". This is because
transponder altitude encoders are calibrated to 29.92'.
For additional support, contact Monroy Aerospace Corp. at:
Tel. +1-954-294-9006, FAX +1-954-344-5269, email@monroyaero.com
Page 17
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
ATD-300 Traffic-Watch Operating Manual
Rev. 1.6
LIMITED WARRANTY
All products manufactured by Monroy Aerospace Corp. are guaranteed
against defective components and workmanship for a period of three
years. Any product found to be defective during this period due to
components or workmanship will be repaired (or replaced) to its original
operating conditions.
This warranty is void if the product has been misused, altered, tampered,
damaged, improperly installed or repaired by unauthorized personnel.
Any product that is to be returned for warranty or repair work shall obtain a
return approval number (RAN) from the factory prior to shipping.
THE IMPLIED WARRANTY AND ALL OTHER IMPLIED WARRANTIES
ARE HEREBY EXCLUDED. MONROY AEROSPACE CORP. MAKES NO
OTHER WARRANTY OR REPRESENTATION OF ANY KIND
WHATSOEVER EXPRESSED OR IMPLIED, AND ALL IMPLIED
WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY
DISCLAIMED.
MONROY AEROSPACE CORP. MAXIMUM LIABILITY HEREUNDER IS
LIMITED TO THE PURCHASED PRICE OF THE PRODUCT. IN NO
EVENT SHALL MONROY AEROSPACE CORP. BE LIABLE FOR ANY
CONSEQUENTIAL, INDIRECT, INCIDENTAL OR SPECIAL DAMAGES
OF ANY NATURE ARISING FROM THE SALE OR USE OF THIS
PRODUCT, WHETHER BASED IN CONTRACT, TORT, STRICT
LIABILITY OR OTHERWISE.
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
Page 18
ATD-300 Traffic-Watch Operating Manual
Monroy Aerospace Corp.
P.O. Box 8217
Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006
www.monroyaero.com
Page 19
Monroy Aerospace Corp., P.O. Box 8217, Coral Springs, Florida 33075 USA
Tel. +1-954-294-9006, Fax +1-954-344-5269, www.monroyaero.com
Rev. 1.6
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