Triadis TR-DVS Manual

triadis engineering GmbH – Eichholzstrasse 7 – Postfach – CH-3254 Messen
Phone: [phone] – Fax: [phone] – Internet: www.triadis.ch – E-Mail: [email protected]
Document name: DVS-P-EN
Document version: 1.1
Release date: 07/03/2011
Pilot’s Manual
TR-DVS

Notes
i - ?? TR-DVS Pilot’s Manual •DVS-P-EN

General Information
Document identification / revision status
This manual applies to the following TR-DVS part numbers:
•P/N T251-000-XXX (TR-DVS)
triadis engineering GmbH reserves the right to update this manual as product enhancements are
made throughout the life of this product.
Actual version: TR-DVS Pilot’s Manual •DVS-P-EN, Version 1.1
Version history
Revision Date Status Author Changes, comments
0.1 13/05/2005 released S.Gisiger Initial Document
0.2 20/05/2005 released S.Gisiger Added: Start-up, Documentation
info file, FAQ
0.3 28/07/2005 released S.Gisiger Software release 1.06/1.07; Adjust-
ments for obtaining the BAZL ap-
proval for installation in Swiss reg-
istered aircraft.
0.4 22/11/2005 released S.Gisiger English translation
1.0 15/01/2008 released D.Wettstein Layout rework, manual separation
1.1 07/03/2011 released S.Gisiger Minor edits
Safety notices
The Altair documentation is an essential component of the equipment and should carefully be
stored with the aircraft log book.
•The pilot is ultimately responsible for all flight decisions and for operating the aircraft safely
at all times.
•This equipment does not remove the need to maintain an effective lookout.
•Continue to observe the airspace and do not rely on TR-DVS (or FLARM) to announce all
objects in the airspace!
•If possible, TR-DVS is to be installed as ‘portable equipment’ with an autonomous power
supply.
•Read the FLARM operating instructions carefully — in particular the Section ‘Restrictions
on operation’ below. TR-DVS is unable to report on objects that are not detected by FLARM.
•Improper installation or misuse of TR-DVS may result in degraded performance of TR-DVS
or to equipment to which it is connected.
•The safety notices must be observed, in particular attention must be given to |notes and
kwarnings.
TR-DVS Pilot’s Manual •DVS-P-EN ii - ??

Legal notices
•This manual, the instrument software and firmware, and user interface design are Copy-
right 2006-2007 by triadis engineering GmbH .
•Any decompiling, disassembly, reverse engineering, or modification of the instrument or
firmware are strictly prohibited without specific written permission from triadis engineering
GmbH .
•Specifications may change without notice. Updates to this document will be available at
http://www.triadis.ch
•triadis engineering GmbH will not be liable for errors/omissions in this document.
•The owner and/or the business performing the installation is responsible for ensuring that
the TR-DVS installation conforms to the requirements of the aircraft type and the installation
is done professionally in accordance with the TR-DVS Installation Manual.
Restrictions on operation
•TR-DVS may not be operated in aircraft that are registered or insured in the USA or Canada,
or by pilots of the USA and Canada. Likewise businesses are forbidden to operate TR-DVS,
if persons on-board the aircraft reside in the USA or Canada or are citizens of the USA or
Canada. Likewise businesses are forbidden to operate TR-DVS, if the takeoff location, place
of destination lies in the USA or Canada, or if the flight over-flies the USA or Canada.
•TR-DVS is not yet certified by FOCA for permanent installation in power planes, helicopters
and touring motor gliders. The installation instructions in this document refer to FOCA re-
quirements. TR-DVS may not be installed in aircraft that are already equipped with an
acoustic reporting/warning system.
•Altair is not certified for use as a replacement for certified primary flight instruments.
•TR-DVS does not have a JTSO or FAA-TSO airworthiness certification for equipment and
the permission granted by the FOCA authority described above applies only to aircraft reg-
istered in Switzerland.
•Install TR-DVS where possible, isolated from the radio transceiver, since at present it is
approved for use only with a portable radio transceiver system.
Trademarks
Trademarks referred to in this document are the property of their respective holders.
iii - ?? TR-DVS Pilot’s Manual •DVS-P-EN

CONTENTS
Contents
1 General Description 1
1.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 SD Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.3 Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Messages 2
2.1 Message classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2 Message format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2.1 Obstacles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2.2 Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2.3 System messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.3 Message filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4 Acknowledge messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.5 Repeat messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Operating Method 6
3.1 Turning the device on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2 Sound check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.3 Vario volume setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.4 COM volume setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.4.1 FLARM error messages on startup . . . . . . . . . . . . . . . . . . . . . . 7
3.5 Fail-safe test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.6 Electromagnetic interference test . . . . . . . . . . . . . . . . . . . . . . . . 7
3.7 Export the IGC logs from the FLARM Flight Recorder . . . . . . . . . . . . . . 7
4 Operation 9
4.1 Acknowledge key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1.1 Alert mode selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1.2 Circling and cruise flight . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1.3 Panel lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 Repeat key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.3 Volume control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.4 SD-Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.5 Error recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
A Frequently Asked Questions 13
B Limited Warranty 14
TR-DVS Pilot’s Manual •DVS-P-EN iv - ??

1 GENERAL DESCRIPTION
1 General Description
1.1 Overview
•TR-DVS is an acoustic reporting system, which produces airspace traffic refer-ences and
collision warnings from FLARM, primarily via speech over a loud-speaker or headset.
•TR-DVS is small, easy to use, with a simple user interface and can be built into small
instrument panels.
•TR-DVS integrates with FLARM and receives GPS and aircraft obstacle data. The object
data announced by FLARM are converted to accoustic caution or warning messages. These
messages contain data pertaining to the threat level, direction, height, type of aircraft and
distance to the object. For obstacles, the messages contains the type of threat and distance.
•TR-DVS can announce several objects with different hazard potentials. FLARM announces
a maximum of fifteen objects in the current Version (3.0).
•TR-DVS announces the most important four objects
1.2 SD Card
•TR-DVS can be configured and its firmware updated via an SD card.
•Flight logs can be read from the FLARM recorder and saved to the SD card.
•TR-DVS can be used safely without an SD card.
1.3 Audio
•TR-DVS is able to mix other audio signals (Vario, COM loudspeaker and Headset) and send
them to a loudspeaker or headset alongwith the generated speech messages.
•The audio signal of the Vario is lowered during generated speech.
•The COM audio signals (radio, channel A and/or B) have higher priority than the generated
messages. Unimportant messages are delayed until the radio transmission is complete;
after a short pause the message is then spoken. Important messages are spoken imme-
diately even whilst receiving a radio transmission - however at reduced (1/4) volume. If a
radio transmission arises during a generated message, then the volume of the generated
speech is lowered immediately by 1/4.
•TR-DVS has two independent audio channels, each of which are composed of a mixer and
an amplifier. This allows the separate use of a loudspeaker and headset.
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2 MESSAGES
2 Messages
2.1 Message classes
TR-DVS uses 4 message classes:
Class Prefix tone Description
Message None This class is used only for pure traffic advisory messages in
mode 1.
Reference “Ping” FLARM collision warnings alarm level 1 (18 sec).
FLARM voltage supply.
Battery warning first stage.
Caution Double beep FLARM collision warnings alarm level 2 (13 sec).
FLARM functionality restricted.
Warning Siren FLARM collision warnings alarm level 3 (8 sec).
FLARM malfunction.
Airframe warning.
Battery warning second stage.
The messages are prioritised according to its message class (importance) and treated accordingly,
examples:
•If a message of the class “reference” is being spoken and a message of a higher priority
arises, then the less important message is interrupted and the more important one is spoken
immediately.
•For repeating messages, if the REP key is pressed, messages of the class “warning” are
sent before messages of the class “caution”.
2.2 Message format
2.2.1 Obstacles
Collision points with obstacles are calculated with the tangentials to the current flight path. The re-
ported obstacle is thus always in the current direction of movement. The currently most dangerous
obstacle is always reported.
Obstacle messages have the format:
<Audio warning>“Obstruction“ <Distance>
Distance
The distance is announced in hectometres, “One“ corresponds to 100m, “Four“ to 400m. At high
approach speeds distances over 1000m are also announced (“One Two“ = 1200m). Distances
below 50m are not announced. Distances are rounded off; 50-149m is announced as “One“, 150-
249m as “Two“, etc.
2.2.2 Objects
Object messages have the format: <Audio warning> <Direction> <Altitude> <Object Type>
<Distance>
TR-DVS Pilot’s Manual •DVS-P-EN 2 - ??

2 MESSAGES
Direction
The direction is announced according to the hour hand position (one o’clock up to twelve o’clock)
on a clockface. E.g.:
•Twelve o’clock: ahead
•Six o’clock: behind
•Three o’clock: right
•Nine o’clock: left
Altitude
The altitude of the object is announced relative to one’s own altitude in six increments. The altitude
information is omitted for less than six degrees above or below the horizon. “Higher“ or “Lower“ is
announced between six and twelve degrees. “High“ or “Low“ is announced for more than twelve
degrees. “Above“ or “Below“ will be announced if the object is in a 300m cylinder above or below
the aircraft.
Object type
The object type corresponds to the type of the nearby aircraft. E.g. “Glider“, “Helicopter“ or
“Powered Aircraft“ ; unknown object types are announced as “Traffic“.
Distance
The distance is announced in hectometres, “One“ corresponds to 100m, “Four“ to 400m. At high
approach speeds distances over 1000m are also announced (“One Two“ = 1200m). Distances
below 50m are not announced. Distances are rounded off; 50-149m is announced as “One“, 150-
249m as “Two“, etc.
2.2.3 System messages
System messages are generated if the system’s operational readiness is partly restricted or if the
system has failed. TR-DVS produces the following system messages:
•FLARM error status, GPS status, Tx and power status
•Airframe warning
•Battery monitoring
•Optional additional messages
FLARM system messages
FLARM system messages always mean a system failure. Example:
<Audio warning>“FLARM Error No GPS“
Inadequate GPS reception. This message is only announced once in the air. This message is
repeated every 10 seconds on the ground.
All other FLARM system messages need not be expected with a functioning system and indicate a
defect in the device.
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2 MESSAGES
2.3 Message filter
Depending upon the operating mode, traffic references and collision warnings are filtered in accor-
dance with the FLARM Alarm Level. FLARM understands four Alarm Levels:
FLARM Alarm Level Description
0 No potential collision risk, thus pure traffic references.
1 (Minor) A potential collision risk is given 18 seconds before the time of the
estimated potential collision.
2 (Important) A potential collision risk is given 13 seconds before the time of the
estimated potential collision.
3 (Urgent) A potential collision risk is given, 8 seconds before the time of the
estimated potential collision.
Illustration of the message filter effects based on the operating mode:
Mode What is filtered Warning time Description
1 Nothing >18 Seconds All objects that FLARM announces are an-
nounced.
2 AlarmLevel 0 18 Seconds Only objects with potential hazard are an-
nounced (The output corresponds to the
FLARM indicators)
3 AlarmLevel 0 and
1
≤13 Seconds Only objects with FLARM hazard potential
important and urgent are announced.
4 AlarmLevel 0, 1
and 2
≤8 Seconds Only objects with FLARM hazard potential
urgent are announced.
5 All messages No warning No announcements are made. This mode is
only temporary, after 5 minutes the system
reverts to the last active mode.
After switching on on the equipment is in mode 2. Modes above 2 should be selected only in
special cases and with caution.
2.4 Acknowledge messages
Messages can be acknowledged with the ACK key (Acknowledge). Messages that are not ac-
knowledged will be repeated after a certain time. The repeat time for unacknowledged messages
depends on the level of risk.
Messages with high level of risk are repeated more frequently, those with low risk less frequently.
If the hazard potential of an object increases, any acknowledgement of that object becomes invalid
and a new message with the updated object status is generated immediately. If the hazard potential
is reduced for an object that has already been acknowledged, the message is regarded as having
been acknowledged.
The acknowledgement always refers to the currently announced object. It becomes invalid as soon
as the object leaves the reception range of TR-DVS.
Acknowledgements for obstacles are only valid as long as the obstacle constitutes a hazard.
TR-DVS Pilot’s Manual •DVS-P-EN 4 - ??

2 MESSAGES
2.5 Repeat messages
Acknowledged messages can be replayed by pressing the REP key (Repeat). Message contents
(direction, altitude, aircraft type and distance) are constantly updated.
If you have forgotten to acknowledge a message it can be replayed with REP and then acknowl-
edged.
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3 OPERATING METHOD
3 Operating Method
This section assumes that TR-DVS was installed according to the instructions in the TR-DVS In-
stallation Manual.
3.1 Turning the device on
•Turn the volume control on 1/3 to power the device.
•The red LED lights up for approximately 10 seconds continuously.
•The loudspeaker bypass is deactivated.
•The LED flashes every 2 seconds briefly.
→TR-DVS is ready for use!
3.2 Sound check
•Press the REP key.
•TR-DVS announces:
“Ready for use, mode 2”
→Loudspeaker is correctly attached.
•If necessary also check the sound through the headset.
3.3 Vario volume setting
In the case where the VARIO audio is integrated, you should adjust the volume control of the VARIO
so that its volume is just as loud as the message “Ready for use, mode 2” .
Note that the TR-DVS makes the VARIO quieter, while the message “Ready for use, mode 2” is
being produced.
→VARIO is connected correctly, and volume adjusted.
3.4 COM volume setting
If you integrated the COM audio signals, set the volume control of the COM equipment so that its
volume is just as loud as the message “Ready for use, mode 2” .
Consider that during COM receipt, TR-DVS delays playing the message “Ready for use, mode 2”
for up to 5 seconds and 1/4 reduced volume.
→COM is connected correctly, and volume adjusted.
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3 OPERATING METHOD
3.4.1 FLARM error messages on startup
If no GPS signal is received during start-up, then TR-DVS will announce after approximately 2
minutes:
“FLARM error, GPS”
If no FLARM is detected during start-up, then TR-DVS will announce after approximately 5 seconds:
“FLARM error, no communication”
3.5 Fail-safe test
To test TR-DVS with integrated COM Audio installed (integrated installation), then you must perform
a bypass function test:
•Select on the COM radio a frequency with radio traffic (e.g. ATIS frequency).
•Interrupt the voltage supply of TR-DVS (e.g. pull the circuit breaker). The LED on TR-DVS
will no longer flash and the volume must be just as loud as with switched on TR-DVS. Test
this with the loudspeaker and the headset if installed.
•Restore the power supply to TR-DVS and wait until TR-DVS is ready for use.
•Once you hear radio traffic again over TR-DVS, turn the TR-DVS volume control to minimum.
•Interrupt again the voltage supply of TR-DVS. The LED on TR-DVS will no longer flash and
the volume must again be just as loud as in the previous test. Test this with the loudspeaker
and the headset. Restore the power supply to TR-DVS and return the volume to its previous
level.
3.6 Electromagnetic interference test
Determine whether all other installed devices when switched on function correctly. Ensure in par-
ticular for powered aircraft that engine management and panel mounted computers and electronics
function correctly and if necessary repeat these tests in flight.
3.7 Export the IGC logs from the FLARM Flight Recorder
The flight recorder of FLARM records the flight informations. These can be exported from the Flight
Recorder in an ICG format and saved on the SD card
To use this function, the system parameters ‘IGCLogging’ and ‘IGC”=LoggingReadOnAckRep’
must be set to 1.
When the device is ready for operation, the exportation of the Flight Logs can be started by simul-
taneous pressing of the ACK and REP buttons.
This function is not available in flight; the aircraft has to be on the ground (min. five minutes
without position change).
When exporting the Flight Logs for the first time (resp. when no Logs are on the card), the
process can take 5-15 minutes.
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3 OPERATING METHOD
Only the flights that are not on the card yet are exported. To avoid long transfer times, it is
recommended not to delete the flights from the SD card, as they will be exported every time
otherwise.
TR-DVS Pilot’s Manual •DVS-P-EN 8 - ??

4 OPERATION
4 Operation
4.1 Acknowledge key
A message can be acknowledged whilst it is being output by briefly pressing the ACK key (Ac-
knowledge).
Acknowledge means that the message has been understood and you no longer wish to hear it.
Acknowledgement of traffic and collision warnings also means that the object has been sighted
and is being visually tracked.
Do not acknowledge any messages you have not understood. Do not acknowledge
traffic and collision warnings if you have not sighted the object or if you are not sure
which object is meant!
Acknowledge is only accepted during a message output. Once the complete message has been
output it can no longer be acknowledged. In this case wait until the message is repeated. Never
acknowledge a message the first time it is announced - wait until it is repeated.
Do not acknowledge collision warnings but change your flight path to eliminate the possibility of a
collision. The message then disappears automatically.
4.1.1 Alert mode selection
The pilot can select the mode by holding down the Acknowledge key until the Blip tone is heard
(after approximately a half second). After releasing the key Vega reads out all 5 modes in sequence:
“Mode one, mode two...”
The desired mode is set by pressing the Acknowledge key during the read-out. The selected mode
is confirmed by Vega with the BeeBee attention tone then by speaking the mode that was selected.
Setting the current mode directly to the mode five can be done by holding down the Acknowledge
key until “Mode five” is announced.
Mode five timeout
Mode five is valid only for five minutes, afterwards the previous mode is reverted to automatically.
Vega will announce this with “Mode two”. In order to leave mode five manually, one selects either
another mode in the way described above, or by pressing the Repeat key.
4.1.2 Circling and cruise flight
TR-DVS has two modes, one for the cruising flight and one for the circling. TR-DVS changes
automatically between circling mode and cruise mode. If one changes the alert mode whilst circling,
then this change applies to the circling flight mode, similarly when changing the alert mode in the
cruise flight, then this change applies to the cruise flight mode.
After switching on, the active alert level is two in cruise and three in circling.
Higher modes than two are to be selected only in special cases and with caution! In-
creasing the mode number always means a reduction of the advance warning time!
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4 OPERATION
4.1.3 Panel lights
Under the ACK key is incorporated a red Light Emitting Diode (LED), which indicates three operat-
ing conditions.
LED state Description
Dark, shines continu-
ously or no periodic
brief flashes
Fatal error, TR-DVS malfunction. After switching on the LED is lit for
approximately 20 seconds continuously, during this time it performs
TR-DVS MEMORY and system checks and is not not ready for use.
Flashes evenly in the 1-
second pulse
Ready for use, at least one message is in the message buffer.
Brief flashes once per
second.
Ready for use, no messages.
Brief flashes twice per
second.
Ready for use, no messages, FLARM receiving objects.
Brief flashes four times
per second.
Ready for use, no messages, mode five selected.
4.2 Repeat key
The internal message queue may contain several messages: acknowledged and un-acknowledged.
Messages that have been acknowledged once are only output when the REP key is pressed. The
sequence of message announcements corresponds to the class order (Warning before Caution,
Caution before note, etc).
Use the repeat function if you have lost sight of an acknowledged object, have not understood a
message or have accidentally acknowledged this. Messages that are not acknowledged will be
automatically repeated after a certain time.
Messages retrieved with the repeat function will be announced at a normal volume,
even if a radio message is received at the same time!
When mode five is active, pressing the REP key reverts the mode to the previously selected mode.
Other aircraft that do not constitute a collision risk are now saved as pre-acknowledged messages
in the message buffer.
These messages can be replayed by pressing the REP key; this produces a sort of “Trafficinfos on
request“ without having to change to Mode 1 (ALL).
4.3 Volume control
The volume knob uses a logarithmic scale. For messages, a minimum volume, which can be
specified in the configuration, applies for the class warning. If the volume knob is on the minimum
and if a message of the class warning needs to be produced, then the volume is raised to the
minimum volume for warnings and the message is sent. Subsequently, the system reverts to the
volume set by the volume knob.
4.4 SD-Card
The SD Card (Secure Digital Memory Card) must be inserted “upside down”, i.e. so that the
contacts are visible from above. Push the card into the slot in instrument front plate, ensuring the
TR-DVS Pilot’s Manual •DVS-P-EN 10 - ??

4 OPERATION
contacts are engaged. For removal, press on the card to release. Afterwards the card can be taken
out of the slot.
The card should not be pressed in or pulled out by exerting force on the equipment.
The card may be never used write protected (when the slide switch is in the LOCK position). The
card is formatted with the FAT file system and can be read and written with a PC card reader or a
PDA. TR-DVS has been tested with 64 and 128-MByte cards.
Use only the SD card supplied with the TR-DVS.
TR-DVS can be used safely without an SD card.
4.5 Error recovery
In the development of TR-DVS, “Fail safe behavior” was made a high priority. TR-DVS can recog-
nize errors and switches into a bypass mode of operation (LED shines continuously). In bypass
mode, the input and output of the audio channels are shorted. In short circuit condition the headset
and/or the loudspeaker are effectively isolated from the TR-DVS and directly connected with the
COM equipment.
In the event of an error in TR-DVS and if the automatic bypass function should mal-
function, such that radio transmissions cannot be heard, then disengage TR-DVS by
removing power from the FLARM/TR-DVS. Without power supply TR-DVS stays in by-
pass mode.
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4 OPERATION
TR-DVS Pilot’s Manual •DVS-P-EN 12 - ??

A FREQUENTLY ASKED QUESTIONS
A Frequently Asked Questions
I connected the FLARM-external display with X5 on the wiring module and on the FLARM-
external display only the POWER LED flashes!
The baud rate at the NMEA OUT port (X5) set to 38400 baud, the FLARM-external display is
distributed with a baud rate of 4800, so you need to set the Baud rate of the FLARM-external
display to 38400 baud. You can find the documentation of FLARM-external display on the Hompage
at www.flarm.com under Support\Manuals.
Why do I have to attach in X3.4, X3.5 and X3.6 only one wire for the audio inputs, what do I
do with the ground wires of the signals?
The audio inputs are set up as ground tied inputs, as signal ground is already supplied to the
system. For this reason the negative of the audio “signal line” must not be attached, isolate this
line with heat shrink tubing. Do not attach this line also to any other ground (X2.4 X2.6), as this
leads to ground loops and can cause unwanted side effects (spurious signals).
I connected TR-DVS with the FLARM “Extension” port, I use the FLARM “Power/Data” port
for power supply to FLARM, but TR-DVS always announces “FLARM no communication”!
TR-DVS must be connected with the FLARM “Power/Data” Port. FLARM will be powerered via the
wiring harness. Only FLARM “Power/Data” Port delivers all the data that TR-DVS needs for correct
operation.
Do I have to change the configuration immediately after installation or can I fly with the
stan-dard configuration as provided?
TR-DVS is ready for use on delivery, under normal conditions no adjustment to the configuration
is neces-sary (with use in gliders). We recommend that the Flarm ID is set to the ICAO ID of the
aircraft. When TR-DVS is put into aircraft other than a glider, then we recommend urgently that the
FLARM configura-tion is adapted.
I switched my COM loudspeaker (Headset) over TR-DVS, do i hear my radio even on TR-DVS
failure?
TR-DVS contains internally a bypass relay, which in the event of an error (or power failure) sepa-
rates the exit of the audio channel A from the internal amplifier and connects directly to the input
of the audio channel A. The same applies to the audio channel B in the event of an error, thus the
loudspeaker and the headset again connect directly to the radio.
13 - ?? TR-DVS Pilot’s Manual •DVS-P-EN

B LIMITED WARRANTY
B Limited Warranty
triadis engineering GmbH (triadis) guarantees you as the initial buyer that the product is free from
manufacturing and material defects in normal use, for a period of twelve months starting from sales
date, provided that it was unused at the time of the purchase.
Returns must be made within the guarantee period, and must be well packed, together with your
name, your address, telephone number, a statement describing the problem with the product, and a
copy of the original invoice from the store where the device was originally purchased. The customer
is responsible for any possible loss or damage of the product during transport.
triadis commits itself under this warranty only to repair or replace the defective product or parts
thereof which are deemed to have failed within the guarantee period area at the discretion of
triadis. triadis is not obligated to repair or replace the product, if according to opinion of triadis:
A the failure of the product is to be attributed to accident, abuse, misuse, carelessness, im-
proper modification or repair
B the product was not installed or operated in accordance with the instructions of triadis
C the failure is attributed to normal wear
D the customer did not follow its obligations in accordance with the conditions specified above.
If the examination of any requirement, which is raised under this warranty, results in the fact that it
lies outside of the permissible period or warranty extent or the product is not found to be defective,
the costs of such an examination and/or repair will be debited to the customer.
Any descriptions, designs, specifications, samples, models, reports or similar material, which are
published in connection with the sales of the product, cannot be regarded as an expression of
warranty that the product corresponds to or will fulfil the requirements of the customer.
TR-DVS Pilot’s Manual •DVS-P-EN 14 - ??