Operation and Installation
(Document-No. 01.1411.010.71e)
P/N 833A-(1xx)-(1xx)
ATR833A - OLED
VHF Communication
Transceiver
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
2 Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
Change History
Revision Date Description of Change
1.00 20.07.2010 FAV – First Release – 2-Knob-HMI
1.01 31.08.2010
New operation function SW V6.1
Microphone-Muting for single-PTT
Squelch default
Correction after internal review
1.02 07.12.2010 Correction of Compliance
2.00 31.05.2011
New cable harness
New remote control, beginning with SW V6.4
List of the Service Bulletins (SB)
Services bulletins are to be inserted in the manual and to be put down
in this table.
SB Number
Rev.
No.
Issue Date Entry Date Name
Survey of Variants
Part Number Description
P/N 833A(000)-(000) Base variant (four-knob)
P/N 833A(100)-(100) Two-knob HMI
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
3Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
CONTENTS
1 GENERAL........................................................................................................... 5
1.1 Symbols ................................................................................................... 5
1.2 Abbreviations ........................................................................................... 5
1.3 Customer Support.................................................................................... 6
1.4 Features................................................................................................... 6
2 OPERATION ....................................................................................................... 7
2.1 Controls ................................................................................................... 7
2.2 ON/OFF ................................................................................................... 9
2.3 Display ..................................................................................................... 9
2.4 Basic Settings ........................................................................................ 11
2.4.1 VOL - Volume............................................................................ 12
2.4.2 SQL - Squelch ........................................................................... 12
2.4.3 DIM – Display Brightness .......................................................... 13
2.4.4 VOX - Voice Activation Speech Level for the Intercom ............. 13
2.4.5 DWM - Dual Watch Mute........................................................... 14
2.4.6 INT - Intercom-Volume .............................................................. 14
2.4.7 EXT - Volume of the External Audio Input................................. 15
2.5 Frequency Setting.................................................................................. 16
2.5.1 8.33 / 25 kHz Channel Width Selection ..................................... 16
2.5.2 Manual Frequency Input............................................................ 16
2.5.3 Recall a Frequency from the User Memory............................... 17
2.5.4 Recall a Frequency from the List of the 10 Last Used............... 18
2.5.5 Store a Frequency into the User Memory.................................. 18
2.6 Dual Watch Operation............................................................................ 20
2.7 Transmission ......................................................................................... 22
2.8 Reception............................................................................................... 22
3 CONFIGURATION ............................................................................................ 23
3.1 SPC - Channel Spacing......................................................................... 23
3.2 Energy Saving Mode – Automatic Display Darkening............................ 24
3.3 PTT-Button Selection............................................................................. 25
3.4 EXT – External Audio Input’s Behavior.................................................. 26
3.5 Microphone Input Sensitivity (MLS/MLD/MRS/MRD)............................. 27
3.5.1 MLS – Left Standard microphone Input Sensitivity.................... 27
3.5.2 MLD – Left Dynamic Microphone Input Sensitivity .................... 27
3.5.3 MRS – Right Standard Microphone Input Sensitivity................. 27
3.5.4 MRD – Right Dynamic Microphone Input Sensitivity ................. 27
3.6 TST - Test Mode.................................................................................... 28
3.7 Master Reset ......................................................................................... 28
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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4 INSTALLATION ................................................................................................ 29
4.1 Advices and Tips ................................................................................... 29
4.2 Telecommunication Data ....................................................................... 29
4.3 Scope of delivery ................................................................................... 29
4.4 Unpacking and Inspecting the Equipment.............................................. 30
4.5 Mounting ................................................................................................ 30
4.6 Equipment Connections......................................................................... 31
4.6.1 Microphone-Connection ............................................................ 31
4.6.2 Headset-Connection.................................................................. 31
4.6.3 Audio-Input................................................................................ 32
4.6.4 Remote Control Panel ............................................................... 32
4.7 Wiring................................................. Fehler! Textmarke nicht definiert.
4.7.1 Conductor Cross Section........................................................... 33
4.7.2 Connector – Pin Allocation ........................................................ 33
4.7.3 Wiring with Cable Harness BSKS833S/BSKS833D .................. 35
4.7.4 Wiring with older Cable Harness BSKS833T............................. 40
4.8 Antenna ................................................................................................. 41
4.8.1 Antenna Selection ..................................................................... 41
4.8.2 Installation Recommendation .................................................... 41
4.9 Microphone / Intercom settings.............................................................. 42
4.10 Post-Installation Check .......................................................................... 43
4.11 Accessories ........................................................................................... 43
4.12 Drawings................................................................................................ 44
4.12.1 Dimensions................................................................................ 44
4.12.2 Mounting Advices ...................................................................... 45
5 APPENDIX ........................................................ Fehler! Textmarke nicht definiert.
5.1 Frequency/Channel-Plan ....................................................................... 46
5.2 Technical Data....................................................................................... 47
5.3 Environmental Conditions ...................................................................... 49
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
5Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
1 GENERAL
This manual contains information about the physical, mechanical and
electrical characteristics, as well as information about installation and
operation of the aeronautical VHF voice radio ATR833A.
1.1 Symbols
Advices whose non-observance can cause damage to the
device or other parts of the equipment.
Information
1.2 Abbreviations
Abb. Name/subject Definition
ATC Air traffic control
DIM Dimming Display brightness
EXT External audio input
FREQ Frequency
INT Intercom On-board communication
(no radio transmission)
PTT Push to Talk activates radio transmission
SEL Selection
SQL Squelch Noise suppression when no strong
radio signal is received
VOL Volume Volume of received radio signal
VOX Voice activated intercom Intercom is activated by speech volume
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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1.3 Customer Support
In order to facilitate a rapid return of shipments in case of repairs, please
follow the instructions of the input guide “Reshipment RMA” provided at
the Service-Area within the Funkwerk Avionics web portal
www.funkwerk-avionics.com
.
Any suggestions for improvement of our manuals are
welcome. Contact: service@funkwerk-avionics.com
.
Informations on software updates are available at Funkwerk
Avionics web portal www.funkwerk-avionics.com
.
1.4 Features
• VHF communication transceiver with 6W output power in 160mm
format
• Frequency range 118,000 to 136,975 MHz
• Automatic selection of 8,33/25 kHz channel spacing
• 4 microphone inputs (2 x standard, 2 x dynamic)
• Voice controlled intercom for up to 4 microphones, can be
deactivated for use with external intercom
• Dual-watch technology, simultaneous monitoring of two
frequencies
• Auxiliary audio input
• Memory for up to 100 user-definable named frequencies
• User-defined frequency list exportable/importable to/from PC (via
RS232) - PC software available at www.funkwerk-avionics.com
• Easy recall of the 10 last used frequencies
• OLED display for best readability under all conditions
• Configurable energy saving
To avoid unintentional permanent transmission, the
transmitter automatically stops transmission after two
Minutes of uninterrupted operation.
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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2 OPERATION
2.1 Controls
CHANGE
Interchange
active and
standby
frequency
DW
Activate /
Deactivate
dual watch
reception of
standby
frequency
SET
Short press:
Choose item to
be adjusted with
Very long press:
Access
configuration
menu
FREQ
Rotary
knob
Change
underlined
value
ON/OFF
VOL/SEL
Rotary knob
Adjust value or
select item given
within the display’s
lower left corner:
Choosen with
:
adjust VOLume,
squelch, etc.
Choosen with
:
SELect item from list
of frequencies
CURSOR
Short press:
Set underline
to select which
value to be
changed with
Long press:
In MEM only:
add name to
memory item
MEM
Short press:
Access user frequency
memory / list of last
used frequencies
Long press:
In MEM only: store
frequency/name
Use together to adjust
volume, squelch or other setting
Use together to change
standby frequency
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Operation and Installation
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ON/OFF
Switch On press button for approx. 0.5 s
Switch Off press button for approx. 2 s
DUAL
WATCH
Activates/Deactivates the mode for mutual
reception of standby frequency
(indicated by “DW” instead of “SBY” for
standby frequency)
SET
1. Choose item volume/squelch/etc. to be
adjusted by
Æpress button shortly
2. Shortcut to volume setting
Æpress button for at least 1.5 seconds
3. Enter configuration menu
Æpress button for at least 5 seconds
CURSOR
1. Move underline within standby frequency,
to be adjusted by
Æpress button shortly
2. Add name to frequency within memory
Æpress button for at least 1.5 seconds
CHANGE Interchange active and standby frequency
MEM
1. Access user defined frequency list.
Æpress button shortly once
2. Access list of 10 last used frequencies
Æpress button shortly twice
3. Store active freq. to selected memory
Æ press button for at least 1.5 seconds
VOL / SEL
Rotary
Knob
1. Adjust volume or other item selected by
, e.g. volume, squelch, DIM level, etc.
2. Select frequency from user memory or list
of last used frequencies
FREQ
Rotary
Knob
Change the underlined value
(i.e. adjust standby frequency, or input
character when entering name)
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Operation and Installation
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2.2 ON/OFF
Turn the device on with
ON:
press button for 0.5 s
OFF:
press button for 2 s
After turning-on the display shows the software version as follows:
(Example)
Device Name
ATR833A
Software-Version
e.g. v6.0
The Start Screen indicates device type and software version.
After that screen the device changes into normal operation (direct input
mode).
The radio starts with the same frequencies and settings from before
being switched off.
2.3 Display
ATR833A
v6.0
118.000
124.910
A
CT
SBY
VOL 03
RX
A
BCDEFGH
BAT
RX
Cursor marking:
Set position with
, adjust
value with
Use of standby
frequency:
RX = receiving
in dual watch
mode
Item choosen by
, or when
accessing
frequency list:
Adjust value or
select number
with
Low Battery warning
User-defined name, when
selecting frequency from
user memory
Use of active frequency:
TX = transmitting
RX = receiving
Te = timeout (solve and push PTT
to re-enable transmissions)
Fixed label for
active frequency
Label for standby
frequency:
DW = dual watch active
SBY = no dual watch
Standby
frequency
Active
frequency
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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Display Meaning Remark
ACT Fixed label for active
frequency
SBY Label for standby frequency,
when no dual watch activated
Dual watch mode allows
intermittent monitoring of
standby frequency activity
DW Label for standby frequency,
when dual watch mode
activated
Dual watch mode allows
intermittent monitoring of
standby frequency activity
118.000
Active Frequency Frequency used for
transmissions and
receptions
124.910
Standby frequency May be monitored in dual
watch mode
RX Receiving on this frequency Usually on active
frequency; can also happen
on standby frequency when
dual watch activated
TX Transmitting on active
frequency
PTT pressed
Te Transmission ended
automatically after 2 minutes
continuous transmission
Press PTT shortly to
re-enabel transmissions
VOL 03 Volume level for receiving
SQL 03 Squelch level Radio signal strength
threshold required for
reception; suppresses
noise and weak/distant
transmitter
DIM 07 Display brightness
VOX 05 Vox level Speech level that activates
the intercom
DWM -2 Dual watch mute Reduction in volume for
dual-watch-reception on
standby frequency
INT 04 Intercom volume
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Operation and Installation
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Display Meaning Remark
EXT 02 Volume of external audio-
signals
Set to 00, if no external
device attached, to prevent
noise pickup
MEM 00 Item from user memory Substitutes standby
frequency; can have name,
if provided by user. Active
frequency can be stored
into this entry with long
press on
LST 00 Item from list of last used
frequencies
Substitutes standby
frequency
ABCDEFGH User-provided name for
frequency within user
memory
Displayed while selecting
from user memory, when
the user has provided a
name for this specific
memory entry
BAT Very low supply voltage Transmission only with
reduced power possible
(decreased radio range!)
F1 … F7 Internal failure Device must be sent back
to the manufacturer
2.4 Basic Settings
To choose between the following settings, use the button:
0. VOL ....... Volume (chosen by default)
1. SQL ....... Squelch
2. DIM ........ Display Brightness
3. VOX ....... Speech level required to activate the intercom
4. DWM ..... Dual watch mute
5. INT ........ Intercom volume
6. EXT ....... Volume of external audio signals
…. back to Volume
(can also be reached by long press of
or 12 seconds inactivity)
The chosen setting can be adjusted by the
rotary knob.
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Operation and Installation
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2.4.1 VOL - Volume
Can be reached by a long press of the
button, but is also
automatically chosen by the radio after 12 seconds of user
inactivity.
Adjusts the volume of received radio signals by turning the
knob. The higher the value, the louder the reception of radio signals.
ACT
123.450
SBY
118.910
VOL 03
2.4.2 SQL - Squelch
By short pressing the
key once, with the help of the rotary
knob the squelch level can be adjusted.
This is a threshold that has to be exceeded by radio signal levels from
other senders, in order to activate the reception circuitry. The higher the
number, the stronger the radio signals have to be in order to be received.
ACT
123.450
SBY
118.910
SQL 07
The setting for the squelch depends on different factors. For motor
aircrafts an initial higher setting is typically appropriate, gliders may use
settings lower value. Lower numbers means higher input sensitivity. This
allows receptions of weaker signals (radio stations at higher distance),
but can also result in pickup of own-aircraft radio interference sources
(engine, strobe lights).
The VOL setting controls the volume of received radio
signals only.
It does neither control the volume of the intercom nor the
external audio input, for these use the INT and EXT settings.
Range: 01 - 16
Range: 01 - 10
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Operation and Installation
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2.4.3 DIM – Display Brightness
By short pressing the
key twice, with help from the rotary
knob the display’s illumination can be adjusted.
ACT
123.450
SBY
118.910
DIM 08
2.4.4 VOX - Voice Activation Speech Level for the Intercom
By short pressing the
key three times, with the help of the
rotary knob, the threshold value for VOX can be adjusted.
VOX defines the crew’s speech volume that is required to activate the
intercom functionality. The higher the value, the louder you need to
speak in order to activate the intercom.
Exception: VOX 01 corresponds to “always on”
The internal filter circuitry has the ability to distinguish between engine
noise and speech.
ACT
123.450
SBY
118.910
VOX 05
In case of very noisy backgrounds or use of uncompensated
microphones, the automatically VOX functionality may not work
satisfying. In these cases, it is possible to deactivate the VOX
automatism with VOX 01, and to use an external intercom-switch.
The default Squelch setting is SQ05 (up to SW V5.7: SQ07).
High values can suppress weak signals. Squelch is not
related to any function of the Intercom.
Range: 01 - 10
Range: 01 - 10
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Operation and Installation
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2.4.5 DWM - Dual Watch Mute
By short pressing the
key four times, with help from the
rotary knob the muting of the volume level for receptions on the standby
frequency (when having dual watch active) can be controlled. This allows
acoustic distinction between both frequencies.
See 2.6 for further information about the dual watch mode.
ACT
123.450
SBY
118.910
DWM -2
Lower numbers (= larger values negative) indicate lower volume for dual
watch receptions, higher numbers (= smaller values negative) louder
volume. The highest value 00 indicates having the same volume for dual
watch receptions as for receptions on the active frequency.
2.4.6 INT - Intercom-Volume
By short pressing the
key five times, with help from the
rotary knob the intercom volume level can be controlled.
The intercom functionality is the on-board crew-internal communication
for multiple-seated powered aircraft.
The intercom can be activated
• automatically whenever someone speaks into a microphone by use of
the VOX functionality (see 2.4.4 for adjusting the required speech
level), or
• manually by use of an external intercom switch
The higher the value, the louder the intercom.
ACT
123.450
SBY
118.910
INT 03
If the intercom is deactivated by cabling, the intercom
volume cannot be adjusted. The radio indicates this by
displaying INT --
Range: -8 - 00 (-8 is more muted, 00 is no muting)
Range: 01 - 10
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Operation and Installation
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2.4.7 EXT - Volume of the External Audio Input
By short pressing the
key six times, with help from the
rotary knob, the volume from the connected external audio signals
(Warning tones, music, etc…) can be set.
The higher the value, the louder the volume of the external audio signal.
A value of 00 deactivates the external audio input.
ACT
123.450
SBY
118.910
EXT 03
When no other device is connected to the external audio
input, the input should be muted by selecting 00, in order to
prevent noise by pickup of on-board interferences.
The priority of the external audio input in comparison to radio
receptions can be configured, see 3.4.
Range: 00 - 10
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2.5 Frequency Setting
Frequency setting is always done by the two steps of
1. entering a new standby frequency to the desired value, and then
2. interchanging the new standby frequency and the previous active
frequency by using
.
Entering a new standby frequency can be done by
a) manual input
,
b) recall of previously stored frequencies from the user memory, or
c) recall from the list of the last 10 used frequencies.
2.5.1 8.33 / 25 kHz Channel Width Selection
Whether a frequency is used with channel width
8.33 kHz or 25 kHz, is
automatically determined by the value of the frequency entered
, and
requires no additional user activity.
Channels used with 25 kHz width are entered in multiples of 25kHz:
123.500, 123.525, 123.550, 123.575, 123.600 etc. These are compatible
with the old 25kHz-only radios. To use the same frequencies with
8.33kHz width, the frequency values entered are increased by 5kHz:
123.505, 123.530, 123.555, 123.580, 123.605 etc.
This numbering scheme used for this distinction is internationally
standardised by ICAO, and consistently used in official documents (like
e.g. the VFR navigation charts) and phraseology used by ATC.
For more detailed information please refer to chapter 5 – but as said
above, for correct channel width selection this knowledge is not required.
2.5.2 Manual Frequency Input
The standby frequency is input by
• selecting with the
button which part of the frequency to
change, and
• changing the selected part with the
rotary knob.
The selected part of the frequency is marked with the underline.
interchanges the newly set standby frequency and the former active
frequency.
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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When having the channel selection configured for 8.33 kHz steps, the
frequency is input in three steps:
123
.450
→
123.450
→
123.450
When having the channel selection configured for allowing 25 kHz
channels only, the frequency is input in two steps:
123
.450
↔
123.450
2.5.3 Recall a Frequency from the User Memory
To access the user memory frequency list, press
once, and select
one of the 100 memory entries with the
turn knob. The
selected memory entry substitutes the former standby frequency.
In the lower left corner of the display, the number of the memory entry
selected is indicated by [MEM xx] (with xx = 00 … 99).
If a name has been provided by the user for this memory entry, it is
displayed next to the memory entry number during the selection process.
ACT
123.450
SBY
121.270
MEM 17 HAMBURG
interchanges the newly set standby frequency and the former active
frequency, and leaves the memory list menu.
In order to speed up the entering of new frequencies, it is
possible to configure the radio to allow entering of those
frequencies only that are used with 25 kHz channel width.
Please refer to chapter 3.1 for information on this
configuration.
However, when choosing this option, please keep in mind to
re-enable 8.33 kHz channel selection before
flying into areas
where 8.33 kHz channels are used.
Entry number (Range: 00 – 99)
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Alternatively, the memory access automatically ends after a timeout, or
can be ended by pressing
twice. The former standby frequency has
now been substituted by the frequency selected from the memory.
2.5.4 Recall a Frequency from the List of the 10 Last Used
The radio automatically keeps track of the last 10 used active
frequencies. To access this list, press
twice, and select one of the 10
list entries with the
turn knob. The selected memory entry
substitutes the former standby frequency.
In the lower left corner of the display, the number of the list entry
selected is indicated by [LST xx] (with xx = 00 … 10).
ACT
123.450
SBY
118.700
LST 01
Key
interchanges the newly set standby frequency and the former
active frequency, and leaves the last used list menu.
Alternatively, the list access automatically ends after a timeout, or can be
ended by pressing
once. The former standby frequency has now
been substituted by the frequency selected from the memory.
2.5.5 Store a Frequency into the User Memory
The active frequency can be stored into any entry of the user memory.
This is achieved by a long press on
when having the user memory
entry to be overwritten selected.
The following example stores the frequency 124.350 MHz of KONSTANZ
into the user memory entry 17:
List entry „00“ contains the last standby frequency from the
MEM menu.
Entry number (Range: 00 – 10)
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Step • Display (Example)
1. Have frequency to be stored set as
active frequency
ACT
124.350
SBY
135.700
VOL 03
2. Enter memory list:
• Press
once in order to access
the user memory. (This overwrites the
former standby frequency.)
ACT
124.350
SBY
122.000
MEM 00 KEMPTEN
3. Select the memory position to be used
• with
ACT
124.350
SBY
121.270
MEM 17 HAMBURG
4. Overwrite the selected memory entry
• with a long press of
.
• The success is indicated by copying
the active frequency into the memory
entry (same as standby frequency).
• A previously defined name is
automatically cleared.
ACT
124.350
SBY
124.350
MEM 17
You can now leave the user memory access by pressing twice or by
waiting for the timeout.
Alternatively, you can add a name of up to 8 characters to the
selected memory entry:
• While having the memory entry
selected, i.e. coming from step 4 above
when adding the name to the new
stored frequency, or else coming from
step 3 above when adding the name to
an existing memory entry:
5. Place the cursor into the name field
• with a long press of
ACT
124.350
SBY
124.350
MEM 17
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Operation and Installation
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6. Enter the name
• by changing the selected character
with
, and advancing the selection
with
, just as when manually
entering a standby frequency.
ACT
124.350
SBY
124.350
MEM 17 KONSTANZ
7. Store the name
• either with a long press of
,
• or with a long press of
.
ACT
124.350
SBY
124.350
MEM 17 KONSTANZ
You can now leave the user memory access by pressing twice or by
waiting for the timeout.
2.6 Dual Watch Operation
The ATR833A comprises one receiver, therefore DUAL-Watch
(simultaneously monitoring two frequencies) is implemented by
alternating automatically between the active and the standby frequency.
With dual watch mode active, basically the standby (lower) frequency is
tuned in, shortly interrupted in regular intervals by tuning in the active
(upper) frequency for a fraction of a second.
Every then detected radio signal on the active (upper) frequency has
priority, and pauses the dual watch monitoring of the standby (lower)
frequency, as long as the reception/transmission continues on the active
(upper) frequency.
Transmissions are always done one the active frequency.
The dual watch mode is activated by pressing
, and indicated by a
changing the “SBY” label for the standby frequency to “DW”.
ACT
123.450
DW
135.700
VOL 05
The dual watch mode is deactivated by pressing again, and by any
operations changing either of the frequencies.
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In order to have an audible distinction between receptions on the active
and the standby frequency, it is possible to have the volume of the
receptions from the standby frequency with a lower volume. Please refer
to chapter 2.4.5 for information onto this feature “dual watch mute”.
Quick approach:
Select or enter a standby frequency which should be additionally
monitored.
Set SQL with the
key and the rotary knob to a value of at
least 02.
Activate dual watch with
(DW is shown)
As soon as no reception is determined on the activate frequency, the
mutual monitoring between active and standby frequency starts.
In order to deactivate dual watch: press
once more or change the
frequency.
For dual watch, the squelch must be set to a value of 02 at
least, as without proper squelch functionality the radio would
not be able to detect whether on the active frequency a
reception takes place.
Don’t forget to interchange the active and standby
frequencies, before answering a call on the standby
frequency.
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Operation and Installation
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2.7 Transmission
By pushing the PTT button, the device starts transmission on the active
frequency. The operation of the transmission is indicated by “TX” in front
of the frequency used.
ACT TX
123.450
SBY
135.700
VOL 05
In order to avoid unintended transmissions, e.g. when having the PTT
button stuck (“stuck mic”), the transmitter automatically stops after two
minutes of transmission, and „TX“ is substituted by „Te“.
In order to re-enable transmission, release PTT and push it again.
2.8 Reception
When receiving, a „RX“ is shown in front of the active frequency. When
having dual watch active (see 2.6) this can be on the standby frequency,
too.
ACT RX
123.450
SBY
135.700
VOL 05
ACT
123.450
DW RX
135.700
VOL 05
When having more than one PTT button and microphone
equipped, it can be configured (chapter 3.3) to use only one
PTT button for transmissions.
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Operation and Installation
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3 CONFIGURATION
A very long press of (5 seconds) accesses the configuration menu.
The configuration menu is used for fundamental settings.
To choose between the following settings, use the
button:
1. SPC ..... Channel spacing
2. DPY ..... Automatic display darkening
3. PTT .... PTT key selection
4. EXT ..... Behavior of the external audio input
5. MLS ..... Sensitivity of the left standard microphone input
6. MLD ..... Sensitivity of the left dynamic microphone input
7. MRS .... Sensitivity of the right standard microphone input
8. MRD .... Sensitivity of the right dynamic microphone input
9. TST ..... Activation/deactivation of the test mode (for maintenance)
…. ............. Leaving configuration menu / back to VOL
(can also be reached by long press of
)
The chosen setting can be adjusted by the
rotary knob.
3.1 SPC - Channel Spacing
With this setting, the ATR833A can be configured to constrain frequency
selection to 25 kHz channels only. This can be used to speed up the
manual frequency input in areas where no 8.33 kHz channel spacing is
used.
See chapter 2.5.2 on further information on manual frequency input.
ACT
123.450
SBY
118.910
SPC 8.33 kHz
With the rotary knob the following options can be selected:
8.33 kHz Allows input of both 8.33 kHz and 25 kHz channels
25 kHz Allows input of 25 kHz channels only.
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24 Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
A short press of switches to the next configuration item, a long press
of
exits the configuration menu.
3.2 Energy Saving Mode – Automatic Display Darkening
In order to save energy – and to extent the lifetime of the OLED display –
an automatic display darkening can be configured.
ACT
123.450
SBY
118.910
DPY always on
With the rotary knob the following options can be selected:
always on No display darkening at all
xx min off Automatic darkening after xx minutes of user
inactivity (xx = range 1–30)
Reactivation of the darkened display is done by press of any key (except
key
) or turn of any knob (the action of the key pressed is performed
when pressing the key again after the display turned on) or when
transmitting.
This configuration item is not
used for selection of 8.33 kHz
or 25 kHz use of a specific frequency, as this is done by the
ATR833A automatically depending onto the frequency value
entered.
The interested user may refer to chapter 5 for information
about which frequency values correspond to which channel
widths.
Please keep in mind to enable 8.33 kHz channel selection
before
flying into areas where 8.33 kHz channels are used.
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Operation and Installation
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A short press of switches to the next configuration item, a long press
of exits the configuration menu.
3.3 PTT-Button Selection
In case of using two external PTT buttons, this configuration item can be
used to deactivate one PTT button – and the associated microphone(s) –
from enabling transmission.
ACT
123.450
SBY
118.910
PTT both
With the rotary knob the following options can be selected:
both Both PTT buttons and all microphones are used for
transmissions, no matter what PTT button was
pressed
left only Only the left PTT button and the left microphone(s)
are used for transmissions
right only Only the right PTT button and the right
microphone(s) are used for transmissions
The intercom functionality is not affected by this setting.
A short press of
switches to the next configuration item, a long press
of
exits the configuration menu.
This feature should only be used when
• it can be foreseen that no frequency changes will be
required (i.e. when using only limited airspace near one
airport, e.g. for circuit pattern training flights), and
• the crew is familiar with the energy saving mode.
In all other cases this feature shall be deactivated, in order to
prevent the usage of wrong frequencies and to avoid
confusion of pilots not aware of the energy saving mode.
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Operation and Installation
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3.4 EXT – External Audio Input’s Behavior
The external audio input can be used to feed a monaural audio signal to
the amplifier for the headsets/speaker.
An external audio signal can be used for different purposes. E.g. it is
possible to check the audio signal of a VOR receiver, to attach a traffic
sensor with acoustic output, or to use the external audio input for
(monaural) music input.
As these signals have different priorities in
comparison to radio receptions, the
priority of the external audio input can be
configured.
With the
rotary knob the following options can be selected:
always on The external audio input is always on, even during
radio receptions and transmit mode. Use this setting
only for very
high priority acoustic warnings, e.g.
collision warning beep tones.
auto off The external audio input is automatically deactivated
during transmit mode, or when no external audio
activity is sensed.
not RXTX The external audio input is automatically deactivated
during radio receptions or transmit mode. This
setting does not
use the external audio activity
sensing, and therefore can introduce noise when no
signal source is connected.
Use this setting only when auto off does not
react fast enough for very short external audio
signals!
A short press of
switches to the next configuration item, a long press
of
exits the configuration menu.
When deactivating one PTT button and microphone for
transmissions in order to keep passengers from interfering
with ATC communication, don’t forget to reactivate the
copilot’s PTT after end of the flight.
ACT
123.450
SBY
118.910
EXT auto off
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Operation and Installation
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3.5 Microphone Input Sensitivity (MLS/MLD/MRS/MRD)
3.5.1 MLS – Left Standard microphone Input Sensitivity
3.5.2 MLD – Left Dynamic Microphone Input Sensitivity
3.5.3 MRS – Right Standard Microphone Input Sensitivity
3.5.4 MRD – Right Dynamic Microphone Input Sensitivity
ACT
123.450
SBY
118.910
MLS 04
ACT
123.450
SBY
118.910
MRS 04
ACT
123.450
SBY
118.910
MLD 04
ACT
123.450
SBY
118.910
MRD 04
The following microphone inputs are available:
Microphone Input Left Right
standard MLS MRS
dynamic MLD MRD
With VOX set to 5 previously, select the microphone to adjust with .
For each microphone input, with running engine speak with normal
volume into the selected microphone, and use the
rotary knob
to adjust the sensitivity, so that the bar reaches the middle of the
scale, as depictured above.
Per microphone input a maximum of two parallel installed microphones
may be connected. (see 4.6.1)
Every microphone input’s sensitivity can be individually
configured, in order to achieve equal volume with all
microphones.
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Operation and Installation
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A short press of switches to the next configuration item, a long press
of
exits the configuration menu.
3.6 TST - Test Mode
The last option in the setup mode is the test mode. The test mode is
used by maintenance personnel only for factory-internal calibrations.
ACT
123.450
SBY
118.910
TST mode off
The test mode is activated/deactivated with .
With active test mode, in normal operation of the radio the lower
display line contains some internal parameters, as shown below:
ACT
123.450
SBY
118.910
VOL 03 H423 V56 E22
Any press of exits the configuration menu.
3.7 Master Reset
To reset all configurations back to factory settings, hold both the and
buttons pressed while switching the radio on with .
Acivation of the master reset is done with
. After performing the reset,
the confirmation
„successfully“ is displayed, and the radio automatically
restarts.
To leave the menu without performing a master reset, press the key
.
For correct microphone sensitivity configuration, VOX must be
set to 5 previously (for VOX-settings refer to section 0).
Don’t care for volume of the headset’s/speakers output during
this configuration, as this is set separately by
INT.
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Operation and Installation
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4 INSTALLATION
4.1 Advices and Tips
The following suggestions should be considered before installing
The assigned installation company could perform wiring. For diagrams
refer to section 4.7 Wiring.
4.2 Telecommunication Data
The following data may be required when applying for the aircraft radio
station license:
Manufacturer: Funkwerk Avionics GmbH
Type Designation: ATR833A
EASA Number: EASA.21O.270
Transmitter Power Output: 6 W
Frequency: 118,000 – 136,975 MHz
Emission Designator:
6k00A3E for 25khz channel spacing
5k00A3E for 8,33kHz channel spacing
4.3 Scope of delivery
Part Number Description
ATR833A ATR833A - VHF communication transceiver
SSATR2 Connector
(Only if no cable set was ordered)
MB800A2 Mounting Block Set
01.1411.010.71e User Manual „Operation and Installation“
EASA Form 1
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
30 Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
4.4 Unpacking and Inspecting the Equipment
Carefully unpack the equipment. Damages due to transportation must be
reported to the shipping company immediately. Save the shipping
container and all packing materials to substantiate your claim
4.5 Mounting
• In cooperation with a maintenance shop, location and kind of the
installation are specified. The maintenance shop can supply all
cables. Suitable sets of cables are available from Funkwerk
Avionics GmbH.
• Select a position away from heat sources. Care for adequate
convection cooling.
• Leave sufficient space for the installation of cables and connectors.
• Avoid sharp bends and wiring close to control cables.
• Leave sufficient lead length for inspection or repair of the wiring of
the connector.
• Bend the harness at the rear connectors to inhibit water droplets
(formed due to condensation) from collecting in the connector.
• For mounting details/drawing refer to chapter 4.12.2 Mounting
Advices.
For storage or reshipment the original packaging should be
used.
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Operation and Installation
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4.6 Equipment Connections
One 25 pin D-SUB miniature connector includes all electrical
connections, except for the antenna.
4.6.1 Microphone-Connection
Microphone Left Right
standard MLS MRS
dynamics MLD MRD
The inputs for standard microphones are appropriate for input voltages of
50 mVpp to 2 Vpp. These inputs have a bias voltage of 8 V at 330 ohms.
Sensitivity is adjustable in the configuration menu (see 3.5).
The inputs for dynamic microphones are appropriate for input voltages of
5 mVpp to 10 mVpp. These inputs have no bias.
In general standard and dynamic microphones (headsets) can be used
simultaneously.
In motor gliders, when the engine is running, the dynamic microphones
should be turned off (switch MLD/MRD inputs to GND), in order to avoid
the transmission of the engine’s noise.
If no dynamic microphone is installed, the input sensitivity for MLD/MRD
shall be set to 1 (see 3.5)
Per input, up to two microphones can be connected in parallel.
4.6.2 Headset-Connection
Headphones may be connected parallel as long as the total impedance
doesn’t fall below 8 Ohm.
The (+UB)-wire has to protected by circuit breaker (4 Amp.
slow-blow)!
Unused microphone inputs should be short-circuited.
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Operation and Installation
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4.6.3 Audio-Input
The external audio input can be used for the input of warn tones or music
etc. In order to avoid disturbances while this input is not used, the
respective wire needs to be short-circuited. Therefore connect PIN4 to
GND.
With cable sets available from Funkwerk Avionics the external audioinput (cinch jack) is already short-circuited by a blind plug. This blind plug
can be easily removed in order to use the external audio input
If the external audio wire (PIN4) is not used it needs to be
short-circuited with GND, in order to avoid disturbances
received through that wire.
4.6.4 Remote Control Panel
In tandem-seated aircrafts it is possible to control the ATR833A by a
remote control panel (ATR600RT Remote Control Unit).
The choice of the remote control depends onto the software
version of the ATR833A:
Version up to SW V6.3 are remote controlled by the
ATR600RT with 4-knob interface.
Versions starting from SW V6.4 on are remote controlled by
the ATR600RT with 2-knob interface.
If you use a ATR600RT with 4-knob-interface, please
indicate in case of repairs and software updates that no
SW version larger than V6.3 may be installed!
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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4.7 Wiring
4.7.1 Conductor Cross Section
Power Supply (Power, GND): AWG18 (0.96 mm²)
Signals: AWG22 (0.38 mm²)
The conductors used must be approved for aircraft installation.
4.7.2 Connector – Pin Allocation
SSATR2
25-pin connector at
the ATR833A
View from
aircraft’s side
Pin Names Functionality
1 LSP(+) LSP+ Output external Loudspeaker Positive
2 HEAD(+) HSP+ Output Headset-Speaker Positive
3 HEAD(−) HSP− Output Headset-Speaker Negative
4 EXT-NF Input external Audio-Signal
5 MIC-R-DYN MRD+ Input dynamic Microphone
(Glider/Gooseneck) Copilot/Right
6 MIC-L-GND MLS−
MLD−
Ground for Microphones Pilot/Left
7 INTERCOM ICS Intercom Activation Switch (connect to
ground for activation of intercom)
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8 MIC-L-DYN MLD+ Input dynamic Microphone
(Glider/Gooseneck) Pilot/Left
9 DATA-RX RS232 RX (for Remote Control)
10 do not connect
11 +12V-PWR +UB Input Power Supply +12V
12 +12V-PWR +UB Input Power Supply +12V
13 GND GND Ground Side of Power Supply
14 MIC-R-GND MRS−
MRD−
Ground Microphones Copilot/Right
15 PTT-L PTTL+ Push-to-Talk Pilot/Left
(connect to ground for transmitting)
16 LSP(−) LSP− Output external Loudspeaker Negative
(Not identical to ground!)
17 PTT-R PTTR+ Push-to-Talk Copilot/Right
(connect to ground for transmitting)
18 MIC-R-STD MRS+ Input standard Microphone (in headset)
Copilot/Right
19 MIC-L-STD MLS+ Input standard Microphone (in headset)
Pilot/Left
20 AUTO-ON AMON Avionic-Master-On
(in aircraft with avionic master switch:
may be connected to input power supply
+12V to override on/off key)
21 DATA-GND RS232 GND (for Remote Control)
22 DATA-TX RS232 TX (for Remote Control)
23 LCD-LIGHT LIGHT Input LCD Illumination
(in aircraft with 12V lighting bus: connect
there. In all other cases: connect to input
power supply +12V)
24 SW-12V-
OUT
Output power supply (max 200mA for
Remote Control)
25 GND GND Ground Side of Power Supply
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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4.7.3 Wiring with Cable Harness BSKS833S/BSKS833D
4.7.3.1 Overview
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Operation and Installation
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4.7.3.2 Connector PWR
View from
aircraft’s side
Input Power Supply:
12V / 14V
External Fuse or
Circuit Breaker:
4A slow-blow
LCD Illumination:
In aircraft with
12V-Lighting-Bus:
connect there
In all other cases:
connect C2-C3
In aircraft with Avionic
Master Switch:
By connecting A3-B3 the
on/off key can be
overridden
In this case the device
switches automatically on
when power is applied
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Operation and Installation
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4.7.3.3 Connectors PL (Pilot/Left) and CR (Copilot/Right)
View from aircraft’s side
Per Headset-equipped
Seat in Powered
Aircraft:
BSKSHS / BSKSOE +
BSKSPTT
Short-circuit the
unused dynamic
microphone input
When using a hand-held
microphone with it’s own
PTT key: connect to
PTT+ as depicted
Per Seat in
Pure Gliders:
BSKSGL +
BSKSPTT
Short-circuit the
unused standard
microphone input
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Operation and Installation
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Per Seat in
Motor Gliders:
BSKSHS / BSKSOE +
BSKSPTT
„Glider-Mic“ =
Gooseneck microphone,
connect using shielded
cable
„Microphone“ =
Headset-microphone
External Loudspeaker
in Gliders and
Motor Gliders:
Connection is done at
connector PL
Loudspeaker output is
not ground referenced!
Intercom-Switch in
Powered MultipleSeated Aircraft
with Headsets:
Connection is done at
connector CR
Will be mounted in panel;
used for activating
intercom
(is also required when
using VOX feature)
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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In Aircraft with
Audio Panel:
BSKSOE
Connection is done at
connector PL
Short-circuit the
unused dynamic
microphone input
4.7.3.4 Connector RMT for Remote Control
This connector contains the serial interface and the power supplies for
the remote control unit. The connector is only available in the doubleseater cable harness.
Connector for the
Remote Control
in the newer
cable harness
BSKS833D
View from
aircraft’s side
4.7.3.5 Connector EXT-NF for Monaural Audio Input
This connector is used for the input of monaural audio signals. He can be
used e.g. for acoustic traffic warnings, for radio navigation receiver’s
acoustic identifiers, or for input of music into the headsets.
The priority of radio reception in relation to this input can be configured
as described in section 3.4.
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Operation and Installation
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4.7.4 Wiring with older Cable Harness BSKS833T
4.7.4.1 Overview
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
41Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
4.7.4.2 Auto-ON
Connector pin 20 determines the radio’s behaviour when applying power:
To activate the radio in aircraft with a dedicated avionic master switch by
this master (i.e. by applying power to the radio), connect pin 20 to the
avionic master additionally to pins 11 and 12; in this case, the radio’s
on/off-key has no functionality.
In aircraft without a dedicated avionic master, pin 20 is left open; in these
case, the radio’s on/off-key is used.
4.7.4.3 Stecker RMT für Fernbedienung
Connector for the
Remote Control
and RS232
in the older
cable harness
BSKS833T
View from
aircraft’s side
4.8 Antenna
4.8.1 Antenna Selection
• A VHF-COM-Antenna with an impedance of 50 Ohm is required.
• Choose an antenna type approved for the aircraft and the mounting
location.
• The antenna should be located far away from ELT-antennas and
other VHF antennas.
• Specified features depend on proper installation of the antenna.
4.8.2 Installation Recommendation
• Take note of the antenna manufacturer’s instructions.
• The metallic contact between airplane surface and antenna-GND
must be very good. On non-metallic airplanes a metal foil (min. 80 cm
x 80 cm) shall be used as electrical counterweight on the inside of the
belly.
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Operation and Installation
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• To avoid a mutual interference of the radios, the antenna isolation
between a voice transmission and a navigation antenna as well as
between double COM antennas should be as large as possible. A
distance of 2 meters usually is sufficient.
• Assemble the antenna in vertical position so on or under the belly that
it is as far distant as possible from all protruding parts (propeller,
chassis, vertical stabilizer)
• For glider installation the internal antenna installed by the
manufacturer should be used.
• The SWR shall not exceed 3:1.
4.9 Microphone / Intercom settings
The settings of MIC and VOX values are essential for Intercom. The
respective configuration options are described in sections 3.5
(MIC=Microphone level) and 2.4.4 (VOX=threshold level)
If the VOX automatism is deactivated with VOX=01 intercom is activated
using the intercom switch (not PTT), which connects PIN 7 (intercom) of
the equipment connector to GND.
For operation with VOX activated PIN 7 has to be connected to GND
permanently.
Transmission merely operates when PTT is pressed.
The suppression of background noise is only possible using differential
microphones, as they are usual with modern headsets. Normal electret
microphones are not suitable.
The HF antenna wire must not be included in any other
cable sets, for example power supply or microphone. It must
also not be placed together with other antenna wires, for
example NAV or Transponder.
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4.10 Post-Installation Check
When installation is completed all steering and control functions of the
aircraft are to be examined, in order to exclude disturbances by the
wiring.
The SWR shall not exceed 3:1.
Furthermore a test flight is recommended, in order to guarantee the
proper in-flight operation of the radio:
• In a flight altitude of at least 2000 ft contact a ground station in a
distance of at least 50 km (30 nautical miles).
• Pay attention to unusual electrical interference.
• If possible, perform the radio test on frequencies within the upper
and lower VHF communication frequency range
4.11 Accessories
Suitable accessories like antennas, cable sets, connectors or switches
can be purchased at our online shop on www.funkwerk-avionics.com
.
A certified maintenance shop must verify proper operation of
the VHF Transceiver System.
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4.12 Drawings
4.12.1 Dimensions
≈
80 mm
38,5 mm
160 mm
161 mm
15 mm
14 mm
140 mm
20 mm
41,3 mm
148 mm
30 mm
O 4,3 mm
/
The D-Sub-Connector (plug) has to be clamped with both spring locks.
It is recommended to additionally secure them with a cable tie.
Fixing clips (spring)
left / ri
g
ht
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4.12.2 Mounting Advices
Panel cut-out: 160 x 42 mm, horizontal aligned, in viewable and
reachable position to the pilot
Use the standard mounting blocks of Mounting Block Set MB833AS
(included in delivery).
For mounting in panels with a thickness of 3 mm to 5 mm longer screws
are required. Order no.: ZUB1.
158
mm
40
17
170
30
11
direct panel mounting
Befest igung direkt am Panel
(Mounting-Block-Set MB800AS)
148
MB800A2
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Operation and Installation
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5 ANHANG
5.1 Frequency/Channel-Plan
In the following table examples for operating and displayed frequencies
in the range between 118.000 ... 118.100 MHz are given. This table can
be continued to 136.975 MHz following the same scheme.
Operating
Frequency
(MHz)
Channel
Width
(kHz)
Displayed
Frequency in
8.33/25 kHz Mode
Displayed
Frequency in
25 kHz Mode
118.0000 25 118.000 118.000
118.0000 8.33 118.005
118.0083 8.33 118.010
118.0166 8.33 118.015
118.0250 25 118.025 118.025
118.0250 8.33 118.030
118.0333 8.33 118.035
118.0416 8.33 118.040
118.0500 25 118.050 118.050
118.0500 8.33 118.055
118.0583 8.33 118.060
118.0666 8.33 118.065
118.0750 25 118.075 118.075
118.0750 8.33 118.080
118.0833 8.33 118.085
118.0916 8.33 118.090
118.1000 25 118.100 118.100
118.1000 8.33 118.105
etc. etc. etc. etc.
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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5.2 Technical Data
GENERAL
COMPLIANCE ETSO-2C37e,ED-23B Class 4, 6
ETSO-2C38e,ED-23B Class C, E
STANDARD TSO-C37d, RTCA DO-186A Class 4, 6
TSO-C38d, RTCA DO-186A Class C, E
DIMENSIONS
Height: 38,5 mm (1,49 in)
Width: 140 mm (5,51 in)
Length: 241 mm (9,49 in) behind the
panel
WEIGHT 1,58 lbs (0,72 kg)
MOUNTING Panel Mounted
TEMPERATURE RANGES
OPERATION
STORAGE
-20 °C ... +55 °C,30 min at +70 °C
-55 °C . . +85 °C
MAX. HEIGHT 50000ft
VIBRATION DO-160D, Cat. S, Vibration Curve M
HUMIDITY RTCA DO-160D, Cat. A
SHOCK
6 G operation
20 G crash safety
RTCA DO-160D ENV.CAT. [C1Z]CAA[SM]XXXXXXZBAAA[TT]M[B3F3]XXA
POWER SUPPLY
13,8 VDC (11 VDC ... 18 VDC)
transmitter: 2,5A
receiver: 0,2A (Standby),max. 0,5A
audio power amplifier: up to 1A
emergency ops, reduced transmitting power
< 11 VDC
POWER CONSUMPTION Standby: 2,8W, transmitting 35W
FUSE external fuse required: 4 A, slow-blow
FREQUENCY RANGE 118,000 MHz .. 136,975 MHz
FREQUENCY STABILITY ±30 ppm at -20 °C .. + 55 °C
COMPASS-SAFE
DISTANCE
30cm
INTERCOM-INPUT
The microphone inputs are connected to the
Intercom input. 100 mVRMS at the microphone
input produce 0,5 W output power at the
Headphone output (300 Ω).
NF (AUDIO) - INPUT 1V/600Ω
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
48 Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
TRANSMITTER
POWER OUTPUT
6 W (nominal)
4 W (minimal)
HARMONIC DISTORTION < 10 % bei 70 % modulation
SIDETONE OUTPUT >0,5W into 300Ω (per headphone)
MICROPHONE INPUTS
2 x standard (50mV…2V) into 100Ω
2 x dynamic microphone
HARMONIC CONTENT >60dBc
MODULATIONFIDELITY deviation <6dB (350…2500Hz)
CARRIER NOISE LEVEL >35dB at 70% modulation
UNWANTED FREQUENCY-
MODULATION
<1kHz at m=70% / 1kHz
DUTY CYCLE
2 minutes on, 4 minutes off;
automatic turn-off after 2 minutes of
continuous transmit operation
RECEIVER
SENSITIVITY
-105 dBm (>6dB S+N/N,
m = 30 % /1 kHz)
BANDWIDTH / 25 KHZ -6-dB-bandwidth > ±8.0 kHz
BANDWIDTH / 8.33 KHZ -6-dB- bandwidth > ±2.78 kHz
SELECTIVITY
(channel spacing 25 KHZ)
-40-dB- bandwidth < ±17.0 kHz
-60-dB- bandwidth < ±22.0 kHz
SELECTIVITY
(channel spacing 8.33 KHZ)
-60-dB- bandwidth < ±7.37 kHz
SPEAKER-OUTPUT ≥4 W into 4 Ω (speaker output)
AGC CHARACTERISTICS
AF output deviation < 6 dB
from 10 µV to 10 mV
SQUELCH Automatic Squelch (adjustable)
SPURIOUS RESPONSES > 80 dB
DISTORTION (350…2500Hz)
<25% at rated power (85% / -33dBm)
<10% at 10dB below rated power (70%
/ -33dBm)
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
49Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
5.3 Environmental Conditions
Characteristic DO–160D Section Cat Condition
Temperature / Altitude 4.0
Low ground survival
temperature
4.5.1 – 55°C
Low operating temperature 4.5.1 – 20°C
High ground survival
Temperature
4.5.2 + 85°C
High Short-time Operating
Temperature
4.5.2 + 70°C
High Operating Temperature 4.5.3
C1
+ 55°C
In-Flight Loss of Cooling 4.5.4 Z
No auxiliary cooling
required
Altitude 4.6.1 C1 35 000 ft
Temperature Variation 5.0 C
2°C change rate minimum
per minute
Humidity 6.0 A
Shock 7.0 A
6 G operational shocks
20 G Crash Safety
Test Type R in all 6
directions
Vibration 8.0 S Vibration Curve M
Explosion Proofness 9.0 X No test required
Water Proofness 10.0 X No test required
Fluids Susceptibilities 11.0 X No test required
Sand and Dust 12.0 X No test required
Fungus Resistance 13.0 X No test required
Salt Spray 14.0 X No test required
Magnetic Effect 15.0 Z
Less than 0,3 m Compass
Safe Distance
Power Input (DC) 16.0 B
Voltage Spike Conducted 17.0 A
A
udio Frequency Conducted
Susceptibility
18.0 A
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
50 Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
Characteristic DO–160D Section Cat Condition
Induced Signal Susceptibility 19.0 A
Radio Frequency
Susceptibility
20.0 TT
Emission of RF Energy 21.0 M
Lightning Induced Transient
Susceptibility
22.0
B3
F3
Lightning Direct Effects 23.0 X No test required
Icing 24.0 X No test required
Electrostatic Discharge (ESD) 25.0 A
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
51Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
Notes:
Funkwerk Avionics GmbH
Gewerbestraße 2
D-86875 Waal
Germany
phone.: +49-8246 9699 0
fax.: +49-8246 1049
E-mail:
service@funkwerk-avionics.com
www.funkwerk-avionics.com
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