Funkwerk ATR833 - OLED Operation And Installation

A

TR833 - OLED

VHF Communication

Transceiver

P/N 833-(1xx)-(1xx)

Operation and Installation

(Document-No. 01.1402.010.71e)

ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

Change History

Revision Date Description of Change

1.00 11.08.2009 FAV – First Release

1.01 15.10.2009 Changed order of Basic Settings (SW5.6)

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 833(000)-(000) Base Variation
P/N 833(100)-(100) Introduction from:

• 2 standards of microphone inputs

• To 2 dynamic microphone inputs

• Additional audio input

• DUAL Watch function

P/N 833(101)-(101) LC Display replaced by OLED Display

P/N 833(103)-(101) SW V5.5 new operating functions:

Master Reset

Æ Factory Settings

Energy Saving Mode

Æ Display Darkening

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

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 SQ – Squelch ..............................................................12

2.4.3 VOX – Voice Detection (Intercom Function)................13

2.4.4 DIM – Display Brightness ............................................13

2.4.5 INT – Intercom-Volume ...............................................14

2.4.6 EXT – Volume of the external Audio-entrance ............ 14

2.4.7 TXm – Activation of the PTT-buttons...........................14

2.5 Frequency Settings ................................................................15

2.5.1 Manual Input................................................................ 15

2.5.2 Select frequency from memory position ...................... 15

2.5.3 Select frequency from the frequency database........... 15

2.5.4 Editing of the User-Defined frequency list ...................16

2.5.5 DUAL Watch................................................................ 18

2.6 Transmission..........................................................................19

2.7 Reception ...............................................................................19

2.8 Enhanced Settings .................................................................20

2.8.1 Energy Saving Mode – Darkening the Display ............ 20

2.8.2 Master Reset - Set back to factory settings.................20

2.8.3 SET UP - Menu ...........................................................21

2.8.4 MIC – Settings.............................................................22

2.8.5 Test Mode ...................................................................23

2.9 Managing the Database .........................................................24

2.9.1 Transfer of the general frequency database................25

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

2.9.2 Transfer of the user-defined frequency list..................26

2.10 Remote Control Panel ............................................................ 27

3 Installation ........................................................................................ 28

3.1 Advices and Tips....................................................................28

3.2 Telecommunication Data .......................................................28

3.3 Scope of delivery.................................................................... 28

3.4 Unpacking and Inspecting the Equipment.............................. 29

3.5 Mounting ................................................................................29

3.6 Equipment Connections .........................................................30

3.6.1 Microphone-Connection ..............................................30

3.6.2 Headset-Connection.................................................... 30

3.6.3 Audio-Input ..................................................................31

3.7 Wiring ..................................................................................... 31

3.7.1 Conductor Cross Section.............................................31

3.7.2 Connector – Pin Allocation ..........................................31

3.7.3 Wiring Diagram............................................................ 32

3.8 Antenna..................................................................................33

3.8.1 Antenna Selection .......................................................33

3.8.2 Installation Recommendation ......................................33

3.9 Microphone Settings ..............................................................34

3.10 Post-Installation Check .......................................................... 34

3.11 Starting up .............................................................................. 35

3.12 Accessories ............................................................................ 35

3.13 Drawings ................................................................................36

3.13.1 Dimensions.................................................................. 36

3.13.2 Mounting Advices ........................................................36

4 APPENDIX ....................................................................................... 37

4.1 Frequency/Channel-Plan .......................................................37

4.2 Technical Data ....................................................................... 38

4.3 Environmental Conditions ......................................................40

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

1 GENERAL

This manual contains information about the physical, mechanical and
electrical characteristics as well as information about installation and
operation of the aeronautical radio device VHF ATR833.

1.1 Symbols

Advices whose non-observance can cause radiation
damage to the human body or ignition of combustible
materials.

Advices whose non-observance can cause damage to the
device or other parts of the equipment.

Information

1.2 Abbreviations

Abb. Name/subject Definition
PTT Push to Talk activates transmitter
VOX Voice Recognition Intercom is activated by talking
INT Intercom On board communication
SQ Squelch
DIM Dimming Display Brightness
EXT External audio input

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

1.3 Customer Support

In order to facilitate a rapid return of shipments, 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:

[e-mail].

Informations on software updates are available at Funkwerk
Avionics.

1.4 Features

• VHF communication transceiver for aircraft installation

• frequency range118,000 to 136,975 MHz

• channel spacing 8,33/25 kHz (2278/760 canals)

• 4 microphone inputs (2 x standard, 2 x dynamic)

• auxiliary audio input

• mounting: 57 mm cut out

• 100 user defined frequencies which can be titled with a name up to

8 characters

• frequency database with 5896 entries – selection of entries by
input of the airfield name - update through serial interface ­frequencies of european airfields pre-installed.

To avoid unintentional permanent transmission, the
transmitter automatically stops transmission after two
Minutes of uninterrupted operation.

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

2 OPERATION

2.1 Controls

CHANGE

Change

between

Standby and

active

frequency

De- /

Activate

dual mode

DW

Rotary knob

change of kHz
digits
Cursor position
during text input

Select from user-

defined frequency

memory

Rotary knob

Adjusting of
volume and VOX
threshold etc. …

Rotary knob

MODE

Switch
between normal
operation and
memory functions
(USER, DATA)

ON/OFF

Selection key for
adjusting VOL,
VOX, SQ, etc. …

SEL

Rotary knob

change MHz

digits

Selection of

letters during text

input

SAVE

Store

frequencies

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

ON/OFF

Switch On press button for approx. 0,5 s
Switch Off press button for approx. 3 s

DUAL
WATCH

Activates the mode for mutual interception
of two frequencies

CHOICE

1. Selection of the different pages of the
basic settings VOL, SQ, VOX, DIM etc.
Æpress button shortly

2. MIC settings Æ press button for 5
seconds

SAVE

Store the active frequency on the selected
memory position

(see section. 2.5.4 page 16)

CHANGE

Switch between Active and Standby
frequency

MODE

Switch between direct input mode (normal
operation) and memory administration
(frequency memories USER and DATA)

MEM –
Rotary
Knob

Rotary Knob for the selection of a stored
user-defined frequency

VOL –
Rotary
Knob

1. Setting of the volume (earphone,
loudspeaker)

2. Change of the basic settings, accessed
by

MHz –
Rotary
Knob

1. Change MHz digits of the Standby
frequency directly

2. Enter letters in the modes USER and
DATA

kHz –
Rotary
Knob

1. Change kHz digits of the Standby
frequency directly

2. Cursor positioning in the modes USER
and DATA

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

2.2 ON/OFF

ON: press button for 0.5 s

OFF:

press button for 3 s

After turning-on the display appears as follows:

(Example)

Device Name
ATR833

Software-Version
e.g. v5.4

State of the frequency database (if loaded)
e.g. D24.04.2006

The radio device starts in normal mode (direct frequency input) under
use of the last settings.

2.3 Display

A

ctive Frequenc

y

Volume
etc.

Low Battery

Standby-Frequency

Operational Condition
(TX, RX, Te)

Active Station

Standby Station

Input
Mode

DATA,
USER

Memory Position

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

Display Meaning Remark

RX Operational Condition -

Reception

Indicates when reception
takes place. (Squelch
open)

TX Operational Condition -

Transmit

Transmitter works properly

Te Transmitter was

automatically switched off
after 2 min continuous
transmission

135.600 Active Frequency

MEMMINGE Name of the Active

Frequency

Assigned name in user­defined memory or
frequency database

VOL Volume Level (indicated by

default)

If SEL was pressed, at this
position the respective
values of the other basic
settings are indicated (see

2.4)

SQ Squelch

VOX Voice Detection Intercom controlled by

voice

DIM Display Brightness

INT Intercom - Volume

EXT Volume of external audio-

signals

TXm PTT-Button Selection Left/Right/Both

NEWHOUSE Name of the Standby

Frequency

Assigned naming in user­defined memory or
frequency database

BAT Low Battery

<10,5V

Possible defective battery
or generator

Er Internal failure/

transmission interrupted

Device must be sent back
to the manufacturer

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

Display Meaning Remark

DATA Access to frequency

database active

Selectable with
Access to Database is
Read Only, Search entries
by input of airfield name

USER Define and Store entries in

the user-defined frequency
list (0-99)

Selectable with
store the Standby­Frequency at the currently
selected memory position
(see 2.5.4)

DUAL DUAL Watch is activated Activated by (2.5.5)

>3< Selected Memory Position

(appearance of brackets
shows whether the
standby frequency and
stored information comply)

[ ] selected storage space
in the user-defined
frequency list (0-99)

<> frequency does not
comply with the stored one.

122.725 Standby - Frequency

2.4 Basic Settings

Between the different menu points of the basic settings can be switched
with the

button.

0. VOL .... Volume

1. SQ ...... Squelch

2. VOX.... Configuration of the threshold value to activate Intercom

3. DIM..... Display Brightness

4. INT ..... Intercom-Volume

5. EXT .... Volume of external audio-signals

6. TXm.... PTT-Key Choice (Left/Right/Both)

7. Back to Frequency Setting

The settings of the volume can be controlled by the

rotary knob.

The return to the standard display (VOL) works automatically after 6
seconds or can be reached by pressing the

button several times.

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

2.4.1 VOL – Volume

Normally (not necessarily selected with the

button) with the rotation

of the

key, the reception volume can be adjusted.

Range: 01 - 16

The VOL-Setting does only affect the received signal, not the
Intercom level, which is pre-configured by factory.

2.4.2 SQ – Squelch

By pressing the

key once, with the help of the rotary knob

Squelch can be adjusted.

Range: 01 - 10

The setting for the Squelch is dependent on different factors. For motor
aircrafts an initial setting of 7-8 applies, gliders may use settings below
that value. A high number reflects a high input sensitivity and may result
in disturbances from different sources (engine, strobe lights).

The default Squelch setting is 07 ... 08. Higher values could
suppress weak signals. Squelch does not impact the
Intercom.

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

2.4.3 VOX – Voice Detection (Intercom Function)

By pressing the

key twice, with the help of the rotary knob, the

threshold value for voice detection can be adjusted.

VOX defines the volume threshold at which normal noise during flight is
not transferred into the headset. Only an additional voice signal activates
intercom operation.

The higher the value, the louder you need to speak in order to activate
the Intercom connection.

Range: 01 - 10

In case of a noisy background or uncompensated microphones it is
possible to deactivate VOX with VOX: 01. If done so, Intercom is enabled
by use of the Intercom-Switch.

In order to configure the microphone sensitivity (see 2.8.4)
VOX should be set to VOX: 05, allowing further adjustments
during flight.

2.4.4 DIM – Display Brightness

By pressing the

key six times, with help from the rotary knob,

the strength of the background illumination of the display can be set.

Range: 01 - 10

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

2.4.5 INT – Intercom-Volume

By pressing the

key four times, with help from the rotary knob

the Intercom Volume level can be controlled.

Range: 01 - 10

2.4.6 EXT – Volume of the external Audio-entrance

By pressing the

key five times, with help from the rotary knob,
the volume from the connected external audio signals (Warning tone,
music, etc…) can be set.

Range: 00 - 10

2.4.7 TXm – Activation of the PTT-buttons

By pressing the

key three times, with the help of the rotary
knob, the PTT-buttons can be selected.

*

- Left / -

*

Right / ** Both

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

2.5 Frequency Settings

The input of a frequency can be done in three different ways, by:

• Direct/manual input (with the lower rotary knobs for the

and

Range).

• Selection from the user-defined frequency list (Memory Positions 0-99)

with the

rotary knob.

• Selection from the frequency database (if loaded) in the DATA-Mode

Between these input modes, it can be switched with the

key. The

currently active mode is indicated on the third line on the right.

• No indication..... direct input with

and or selection from the

user-defined frequency list with

• USER................ no frequency selection only Edit and Storing in the

user-defined frequency list.

• DATA ................ Search in the frequency database (if loaded)

2.5.1 Manual Input

The frequency can be set with the

and rotary knobs. It is

indicated as Standby-Frequency in the lower line.

During the input the existing name (left on the third line) is overwritten.
The indication of the memory position (format of the brackets) changes
from [xx] in >xx<, showing that the new Standby-Frequency does not
comply with the contents of the indicated frequency memory position.

switches active and standby-frequencies.

2.5.2 Select frequency from memory position

With

, a stored frequency can be selected from the user-defined

frequency.

In this case the respective memory position [xx] (xx =
becomes 0 … 99) as well as the frequency name and the stored
frequency are indicated.

2.5.3 Select frequency from the frequency database

This function is available only with installed frequency database.

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

Step Display (Example)

1. Change to DATA mode:
press

until DATA appears on the right

in the third line.

2. Searching the Database:

a. Input the first letters of the desired station

... positions the cursor

. selects the letters

at the position of the cursor the cursor symbol
“^“and the chosen letters blink alternately

b. The first found entry which fits the search

criteria is displayed with its name and the
belonging frequency.

c. The selection of other, also fitting entries

is done with

3. Activation of the selected frequency:
Once the desired frequency is found, it can

be activated with

. The device changes

back to the direct input mode.

The database search can be canceled at anytime with the button.
The selected frequency remains as the standby-frequency.

2.5.4 Editing of the User-Defined frequency list

The Standby frequency given in the lower line can be named and stored
in the user's list (user-defined frequency list).

Before saving, the desired memory position must be chosen in the direct
input mode (the third line indicates neither USER nor DATA) with

.

The currently stored entry will be overwritten.

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

Step Display (Example)

1. Select memory position:
In the direct input mode press

to select
a memory position. The current entry is now
indicated with frequency and the respective
designator.

2. Setting Frequency:
a) Direct input with

or

b) select frequency in DATA-Mode (see

2.5.3)

3. Change into USER-Mode:
Press

to enter USER-Mode

“USER“ is displayed (third line on the right).

4. Enter frequency name:
The input of the user-defined designator is
done with the lower rotary knobs.

...... positions the Cursor

.... selects the letters

5. Store Entry:
Press

to store the chosen frequency
with the defined name on the indicated
memory position. In the lower line „SAVE“
appears for 2 seconds, after that the device
changes back into the direct input mode.

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

2.5.5 DUAL Watch

The ATR833 owns

one receiver, therefore, DUAL-Watch (listen to two
frequencies) happens alternately between the active and the standby
frequency.

By pressing the

key DUAL Watch is activated, pressing again

deactivates it.

The two frequencies, the receiver shall alternately listen to, should be
entered before activating DUAL Watch, since changes in the standby
frequency would deactivate this mode again.

Another important precondition is the setting of the Squelch value (SQ).
It must at least be set to SQ: 02 (SQ-setting see 2.4.2). Only if a noise
suppression takes place, it can be evaluated whether nothing is received
on the active frequency.

SQ must be set to a value that is is at least 02, because
otherwise no noise reduction would happen, in this case it
would not be possible to determine if a reception takes place
or not.

When the DUAL Watch is activated, DUAL will be shown in the third line.

When there is no reception on the active frequency, the receiver
switches to the standby frequency. The active frequency has priority and
it is monitored every 2 seconds for a duration of 0.3 seconds. If reception
on the active frequency is recognized again, the monitoring of the
standby frequency is interrupted until no reception takes place on the
active frequency.

Which frequency is currently monitored will be shown behind RX: “RX^“
” if the active frequency is monitored and “RX_“ ” if the Standby­Frequency is monitored.

In DUAL Watch Mode it is possible to switch between the standby­frequency and the active frequency. Transmission is always done on the
active frequency.

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

Quick approach:

• Select or enter a Standby-Frequency, which should be additionally

monitored.

• Set SQ with the

key and the rotary knob to a value of at

least 02.

• Activate DUAL Watch with

(DUAL is shown)

• As soon as no reception is determined on the activate frequency,

the mutual monitoring between active and Standby-Frequency
starts (2 seconds Standby and 0.3 seconds active frequency)

• In order to deactivate DUAL Watch: press

once more or change

the frequency.

2.6 Transmission

By pushing the PTT button, the device starts transmission on the
selected frequency (shown in the upper line).

“TX“ indicates correct operation of the transmitter.

In order to avoid unintended transmissions, the transmitter stops after
two minutes and the display changes from „TX“ to „Te“. In order to re­start transmission, release PTT and push it again.

2.7 Reception

While receiving (squelch is open) “RX” is shown.

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

2.8 Enhanced Settings

In the following section configurations beyond the basic settings are
explained.

In order to save energy and to extent lifetime of the OLED Display an
automatic Darkening of the Display “ENERGY SAVING MODE“ can
be configured.

The Master Reset - Function sets the user settings back to the factory
settings.

In the SET UP - Menu the frequency databases (including the user­defined frequency list) can be deleted and the channel spacing can be
configured.

In the MIC - Settings the microphone sensitivity is configurable.

+ Turning on

Energy Saving Mode

+ +Turning on

Master Reset (Factory Settings)

+ Turning on SET-UP Menu

Press longer than 5 seconds

MIC - Settings

2.8.1 Energy Saving Mode – Darkening the Display

Available since P/N 833-(103)-(101) software version V5.5

The Energy Saving Mode - Menu can be accessed by pressing the

key and the key simultaneously.

With the

rotary knob a time span can be defined, after which the
display automatically darkens if no key or rotary knob was in use. The
time span can be set up to 30 minutes. The automatic darkening can be
deactivated with selecting the “Never“ option (default). By pressing the

key again, the setting is saved and the menu is left.

2.8.2 Master Reset - Set back to factory settings

Available since P/N 833-(103)-(101) software version V5.5

The factory settings can be reset only from the switched-off device. In
order to reset to factory settings press the

key (to switch on), the

key and the key simultaneously. The display shows
“SETTING RESTORE“. After releasing the keys the settings are reset to
the factory settings. This will be confirmed by the message,
“SUCCESSFULLY“.

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

2.8.3 SET UP - Menu

The SET UP-Menu is activated by pressing the

key and the

key simultaneously

.

The following functions are available:

• ERASE – To delete data memories (USER, DATA)

• Channel Spacing–Setting of the channel spacing(25kHz / 8,33kHz)

The selection between the options of the SET UP-Menu is done with the
lower row of keys.

The SET UP-Menu is left with the

key. The device remains

switched-on and returns to the normal display mode.

2.8.3.1 ERASE – Delete the data memories

In the SET UP–Menu, by pressing the

key, the “ERASE“ menu

opens:

The erasing of the user-defined frequency can now be with the
keys. The process takes a few minutes and the display presents the
message: “ERASING“.

The Frequency Database can be deleted with the

key.

If the user-defined frequency list was deleted, the display shows “INIT---­“ instead of the frequency names.

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

2.8.3.2 Channel Space

In the SET UP–Menu, by pressing the

key, the “Channel Space“

sub menu is opened:

This menu enables to select the desired channel spacing. The actual
channel spacing is marked with an “(X)“ at the end of the line.

2.8.4 MIC – Settings

Every microphone input can be individually configured. Therefore
different types of microphones can be used.

Microphone Input Left Right

standard Ls.MIC Rs.MIC

dynamic Ld.MIC Rd.MIC

Per microphone input a maximum of two parallel installed microphones
may be connected. (see 3.6.1)

The MIC-settings are opened by pressing the

key 5 seconds or
longer. A countdown will appear in the upper line on the left side. After
the countdown is finished the MIC-settings menu will be displayed.

For setting MIC, VOX must be set to 5 previously (for VOX ­Settings refer to section 2.4.3 page 12).

With the

rotary knob, the microphone is chosen (for example, “Ld“

for Left/dynamic).

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

With the rotary knob, it is possible to configure the input sensitivity
of the preamplifier “MIC“ (01=insensitivity, 10=max. sensitivity), the so
adjusted microphone level is indicated below.

To correctly set the microphone level, it must be configured with a
running engine and speaking at a normal volume, while doing this the
microphone level should be set to approximately 2.00 (bar graph should
reach the middle of the scale)

With the

rotary knob, e.g. to configure another microphone, the

present settings are saved.

To save and to exit the menu press the

button.

2.8.5 Test Mode

The Test-Modus is used for testing purposes. It is activated in the MIC­Settings menu (see 2.8.4). In order to reach the test mode from normal
operation:

press for 5 seconds

(MIC – setting turns on)

press shortly (“test“ appears)

press shortly, to leave the menu.

The test display will now appear:

Screen contents and meaning:

AGC:... receiver RF input level

VOX:... sum of the microphone input levels

Ext: ..... external audio input level

To exit test mode, restart the device.

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

2.9 Managing the Database

The user-defined frequency list (memory positions 0-99), as well as the
general frequency database can be edited and updated on a PC.

For that, a suitable cable set (with RS232 connector) as well as the
transfer software for PCs (Windows) are required.

The transfer software "General Programmer" can be downloaded from

www.funkwerk-avionics.com website, under SERVICEÆINFO as packed

file ("ATR_Programmer_v3.5"). The cable set (order no.:
ZATRPCKABEL) can be obtained in our online shop or from our
distributors.

The transfer software must be unzipped and installed per setup.exe. If
the ATR833 is correctly connected while the software is started, the user
interface appears as follows:

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ATR833 / P/N 833-(1xx)-(1xx)

Operation and Installation

2.9.1 Transfer of the general frequency database

The general frequency database can be updated with "start of
transmission “. This overwrites the existing database..

The database file is a text file with fixed sized columns. The frequency
names shall never exceed the length of 8 characters. Blanks and
numbers are permitted. Frequency name and frequency are separated
by a blank.

After selecting “Start Transmission” the selection of the input file is
requested. After selection of the corresponding file and confirmation the
file transfer starts. The progress can be monitored on the ATR833
display:

While the transfer of the general database is only possible in one
direction (PCÆATR833), the user-defined frequency list of the ATR833
can be downloaded and uploaded (after modification) again.

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Operation and Installation

2.9.2 Transfer of the user-defined frequency list

While transferring a file onto the ATR833, pay attention to the file name
which should be "User_Area.txt". Furthermore the contained data must
follow the suitable format (see following extract).

“Name5678“,“MHz“,“kHz“, Memory Position (0-99)

The datasets are transferred in
the order as they are given by
the file’s content. Hence, row 1
corresponds to memory position
0 and row 100 corresponds to
memory position 99. The
datasets should be sorted before
the upload, for that the number
at the end of the row may be
modified in order to re-arrange
the sequence fitting individual
needs.

In order to avoid errors due to a
wrong list format, it is
recommended to download the
“User-Area.txt” file and to modify
this downloaded file.

By selecting the button „From device to
computer“ the “User_Area.txt” file is
downloaded in the program root or in the last
opened directory. The transfer progress can be
monitored on the ATR833 display:

For uploading a file the button „From computer
to device“ must be pressed. After selection of
the “User_Area.txt“ file and confirmation, the
transfer starts. The transfer progress can again
be monitored on the ATR833 display

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Operation and Installation

2.10 Remote Control Panel

In Tandem-aircrafts it is possible to control the ATR833 by a second
control panel (ATR600RT Remote Control Unit), which is connected to
the RS232 interface of the ATR833. This second control panel enables
to set frequencies and adjust Volume, Squelch, VOX and other basic
settings (see 2.4).

In case of an error in the transmission between ATR833 and its remote
unit, following error messages may appear in the second line besides
„VOLxx“:

1e = Time-out-transmission error

2e = erroneous transmission (e.g. checksum error)

3e = unknown command

The error message disappears as soon as a correct command is
received or the frequency is changed.

A malfunction of the remote unit does not impact the reliable operation of
the ATR833.

If the channel spacing (see 2.8.3.2) is changed at the main
device, the remote unit needs to be re-started in order to
consider this change.

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Operation and Installation

3 INSTALLATION

3.1 Advices and Tips

The following suggestions should be considered before installing

The assigned installation company could perform wiring. For diagrams
refer to section 3.7 Wiring.

3.2 Telecommunication Data

The following data may be required when applying for the aircraft radio
station license:

Manufacturer: Funkwerk Avionics GmbH

Type Designation: ATR833

EASA Number: EASA.21O.0193

Transmitter Power Output:

6 W

Frequency:

118,000 – 136,975 MHz

Emission Designator:

6k00A3E for 25khz channel spacing

5k00A3E for 8,33kHz channel spacing

3.3 Scope of delivery

Part Number Description

ATR833 ATR833 - VHF communication transceiver

ZUB2 (4 pcs) Mounting Screw ATR833 – for panels up to

3mm

SSATR2 Connector

(Only if no cable set was ordered)

01.1402.010.71e User Manual „Operation and Installation“

EASA Form 1

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Operation and Installation

3.4 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

For storage or reshipment the original packaging should be
used.

3.5 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.

• Remove rotary knobs before mounting:

o Lift-off faceplate with an appropriate tool
o Loosen screw and remove rotary knob
o Insert cap correctly orientated!

• The equipment is fixed front-laterally with four 6-mm through-hole
screws in a 57 mm cut-out.

• For mounting details/drawing refer to chapter 3.13.2 Mounting
Advices.

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Operation and Installation

3.6 Equipment Connections

One 25 pin D-SUB miniature connector includes all electrical
connections, except for the antenna

The (+UB)-wire has to protected by circuit breaker (4 Amp.
slow-blow)!

3.6.1 Microphone-Connection

Microphone Left Right

standard Ls.MIC Rs.MIC

dynamics Ld.MIC Rd.MIC

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 init menu with MIC. (see 2.8.4).

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 Ld/Rd inputs to GND), in order to avoid the
transmission of the engine’s noise.

If no dynamic microphone is installed, the input sensitivity MIC for Ld/Rd
shall be set to 1 (MIC01…see 2.8.4 MIC – Settings page 22). Therewith
these microphone inputs are set to “insensitive“.

Per microphone input two microphones may be connected in parallel.

3.6.2 Headset-Connection

Headphones may be connected parallel as long as the total impedance
doesn’t fall below 8 Ohm.

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Operation and Installation

3.6.3 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.

3.7 Wiring

3.7.1 Conductor Cross Section

Power Supply (Power, GND): AWG18 (0,96 mm²)

Signals: AWG22 (0,38 mm²)

The conductors must be approved for aircraft us.

3.7.2 Connector – Pin Allocation

RS232-connector in cable sets

BSKS833T and BSKSZUB

SSATR2 – D-Sub connector

ATR833 25-pole

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Operation and Installation

3.7.3 Wiring Diagram

PIN 24: I = 200 mA (internal fuse)

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Operation and Installation

3.8 Antenna

3.8.1 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.

• Specified features depend on proper installation of the antenna.

3.8.2 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.

• 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 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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Operation and Installation

3.9 Microphone Settings

The settings of MIC and VOX values are essential for Intercom.
(MIC=Microphone level see 2.8.4, VOX=threshold level see 2.4.3).

Using VOX the threshold level is adjusted so that usual flight noise is not
transmitted to the headphones, but only an additional signal caused by
speaking will start intercom operation. With very strong background
noise or uncompensated microphones VOX can be deactivated by
setting VOX=01 (see 2.4.3). In this case intercom is activated using the
intercom switch (not PTT), which connects pin 7 (intercom) of the
equipment connector to GND.

If necessary, e. g. in a tandem cockpit, use two parallel connected PTT
buttons.

For operation in VOX mode 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.

3.10 Post-Installation Check

A

certified maintenance shop must verify proper operation of

the VHF Transceiver System.

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

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Operation and Installation

3.11 Starting up

Turn the device on with

After start-up the following screen appears:

The Start Screen indicates device type and software version as well as
the date of the frequency database.

After that screen the device changes into normal operation (direct input
mode).

3.12 Accessories

Suitable accessories like antennas, cable sets, connectors or switches
can be purchased at our online shop on

www.funkwerk-avionics.com.

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Operation and Installation

3.13 Drawings

3.13.1 Dimensions

20 mm

18 mm

168 mm

61 mm

65 mm

3.13.2 Mounting Advices

Connection Area

Panel Cut-out

For mounting in panels with a thickness of 3 mm to 5 mm longer screws
are required. Order no.: ZUB1.

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Operation and Installation

4 APPENDIX

4.1 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

Spacing

(kHz)

Displayed

Channel

8.33/25 kHz Mode

Displayed Channel

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 25 118.025 118.020

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 25 118.075 118.070

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.

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Operation and Installation

4.2 Technical Data

GENERAL

COMPLIANCE ETSO-2C37e,ED-23B Class 4

ETSO-2C38e,ED-23B Class C
TSO-C37d, RTCA DO-186A Class 6
TSO-C38d, RTCA DO-186A Class E

DIMENSIONS

Height: 65 mm (2,56 in)
Width: 65 mm (2,56 in)

Length: 248 mm (9,76 in) behind the panel
WEIGHT 1,32 lbs (0,6 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[YY]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, restricted function: 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

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Operation and Installation

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 (6 dB 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)

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Operation and Installation

4.3 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
Audio Frequency Conducted

Susceptibility

18.0 A

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Operation and Installation

Characteristic DO–160D Section Cat Condition

Induced Signal Susceptibility 19.0 A
Radio Frequency

Susceptibility

20.0 YY

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

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