Becker RCU6512 Owner's manual

Becker Avionics GmbH •Baden-Airpark B108 •77836 Rheinmünster •Germany
[phone] •Fax [phone]
http://www.becker-avionics.com •E-mail: [e-mail]
Installation and Operation
Manual DV17551.03
Issue 03 June 2020
Article-No. 0645.230-071
Remote Control Unit
RCU6512
for
VHF Transceiver RT6512

Installation and Operation
Becker Avionics
2 RCU6512 DV17551.03 Issue 03 June 2020
Approved Production and Maintenance Organization
Certificates see: http://www.becker-avionics.com/certification/ →Certificates
Contact data for:
Europe, Asia,
Oceania and
Africa
Becker Avionics GmbH
Baden-Airpark B108
77836 Rheinmünster (Germany)
Tel.: [phone]
Fax: [phone]
Internet: www.becker-avionics.com
Email: [e-mail]
Customer Service:
Email: [e-mail]
Contact data for:
America,
Australia, Japan
Becker Avionics Inc.
Email: [email protected]om
WARNING - USER RESPONSIBILITY
FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS DESCRIBED
HEREIN OR RELATED ITEMS CAN CAUSE DEATH, PERSONAL INJURY AND PROPERTY
DAMAGE.
This document and other information from Becker Avionics provide product or system options for
further investigation by users having technical knowledge.
The user is responsible for making the final selection of the system and components. The user has to
assure that all performance, endurance, maintenance, safety requirements of the application are met
and warnings be obeyed.
For this the user has to include all aspects of the application to be compliant with the applicable
industry standards and the requirements of the responsible aviation authority. The product
documentations from Becker Avionics have to be obeyed.
To the extent that Becker Avionics provide component or system options based upon data or
specifications provided by the user, the user is responsible for determining that such data and
specifications are suitable and sufficient for all applications and reasonably foreseeable uses of the
components or systems.
Term definition: User in the sense of user, installer, installation company.

Becker Avionics
Installation and Operation
DV17551.03 Issue 03 June 2020 RCU6512 3
Preface
Dear Customer,
Thank you for purchasing a Becker Avionics product. We are pleased that you have chosen our
product and we are confident that it will meet your expectations.
For development and manufacturing of our product, the guidelines for highest quality and reliability
have been borne in mind, supplemented by selection of high-quality material, responsible production
and testing in accordance to the standards.
Our competent customer support department will respond on any technical question you may have.
Please do not hesitate to contact us at any time.
Remote Control Unit for VHF-Transceiver
RCU6512 (Remote Control Unit)
* design depends on variant.
* Some figures in
this manual are for basic understanding and can be different to the actual design.

Installation and Operation
Becker Avionics
4 RCU6512 DV17551.03 Issue 03 June 2020
List of Effective Pages and Changes
Only technical relevant modifications are described in this table.
Document: DV17551.03 issue 03 Article Number 0645.230-071
Cover Page 06/2020
Introduction 06/2020
Chapter 1 – 4 06/2020
Issue Page No.: Section /
Chapter Description
03 1-60 all Changed: Editorial adjustments.
-- 1.8 Updated: Technical data.
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© by Becker Avionics GmbH / all rights reserved

Becker Avionics
Installation and Operation
DV17551.03 Issue 03 June 2020 RCU6512 5
Table of Contents
1General Description .................................................................................................................... 11
1.1 Introduction ................................................................................................................................. 12
1.2 Purpose of Equipment................................................................................................................. 13
1.3 Variants Overview ....................................................................................................................... 14
Software Status................................................................................................................. 14
1.4 Associated Devices..................................................................................................................... 14
Overview ........................................................................................................................... 14
1.5 Scope of Functionality................................................................................................................. 15
Illumination........................................................................................................................ 15
Channel Spacing / Frequency Range............................................................................... 15
Memory Channels / Frequency Storage........................................................................... 15
Squelch Operation ............................................................................................................ 15
Sidetone............................................................................................................................ 16
Emergency Operation....................................................................................................... 16
Configuration Mode........................................................................................................... 16
Installation Mode............................................................................................................... 16
Interface ............................................................................................................................ 16
Built-In Tests (BIT) ............................................................................................................ 16
1.6 Safety-Conscious Utilization ....................................................................................................... 17
1.7 Restriction for Use....................................................................................................................... 17
1.8 Technical Data ............................................................................................................................ 18
General Characteristics .................................................................................................... 18
Dimensions & Weight........................................................................................................ 18
Software............................................................................................................................ 18
Hardware .......................................................................................................................... 18
Continued Airworthiness................................................................................................... 18
Environmental Conditions................................................................................................. 19
Certifications ..................................................................................................................... 20
1.9 Order Code ................................................................................................................................. 21
RCU6512 .......................................................................................................................... 21
Accessories....................................................................................................................... 21
Documentation.................................................................................................................. 21
2Installation.................................................................................................................................... 23
2.1 Packaging, Transport, Storage ................................................................................................... 24
2.2 Device Assignment ..................................................................................................................... 24
Scope of Delivery.............................................................................................................. 24
State of Delivery................................................................................................................ 24
Additional Equipment........................................................................................................ 24
Type Plate......................................................................................................................... 25
Software/Firmware Status – Functionality ........................................................................ 25
2.3 Installation Requirements............................................................................................................ 26
Rear Panel Installation...................................................................................................... 27
2.4 Dimensions ................................................................................................................................. 28
RCU6512 .......................................................................................................................... 28
2.5 Connector Pin Assignments........................................................................................................ 29
Connector P1 .................................................................................................................... 29
Discrete In-/Outputs.......................................................................................................... 30
Panel Illumination.............................................................................................................. 30
External Power ON (/EXT_ON) ........................................................................................ 30
External Exchange (/EXCH_CH) ...................................................................................... 30
2.6 Equipment Configuration Samples ............................................................................................. 31
RCU6512 with RT6512..................................................................................................... 31
2.7 Aircraft Wiring.............................................................................................................................. 31
Installation Switch (INS_SW)............................................................................................ 31
RT6512 with RCU6512 as Primary Controller.................................................................. 32
2.8 Configuration-Setup .................................................................................................................... 33
Installation Mode............................................................................................................... 33
Configuration Mode........................................................................................................... 37
2.9 Factory Default Settings.............................................................................................................. 41
2.10 Post Installation Check................................................................................................................ 42
Mechanical Installation and Wiring Check........................................................................ 42

Installation and Operation
Becker Avionics
6 RCU6512 DV17551.03 Issue 03 June 2020
Power Supply .................................................................................................................... 42
Receiver / Transmitter Operation...................................................................................... 42
Flight Test Check .............................................................................................................. 42
2.11 Troubleshooting........................................................................................................................... 42
3Operation...................................................................................................................................... 43
3.1 General........................................................................................................................................ 43
3.2 Device Description ...................................................................................................................... 43
Device Assignment ........................................................................................................... 44
Packing, Transport, Storage ............................................................................................. 44
Scope of Delivery .............................................................................................................. 44
State of Delivery................................................................................................................ 44
Type Plate ......................................................................................................................... 44
Controls and Indications.................................................................................................... 45
3.3 Start-Up ....................................................................................................................................... 46
3.4 Receive and Transmit Mode ....................................................................................................... 47
Receive Mode ................................................................................................................... 47
Transmit Mode .................................................................................................................. 47
3.5 Frequency Selection Modes........................................................................................................ 48
Standard Mode.................................................................................................................. 49
Direct Tune Mode.............................................................................................................. 50
Channel Mode................................................................................................................... 51
3.6 Frequency Storage Functions ..................................................................................................... 52
Store "Active Frequency" .................................................................................................. 53
Store "Preset Frequency".................................................................................................. 54
Delete Data ....................................................................................................................... 55
3.7 Squelch (SQL)............................................................................................................................. 56
Squelch Threshold ............................................................................................................ 56
3.8 Channel Spacing ......................................................................................................................... 56
3.9 Brightness.................................................................................................................................... 56
3.10 Warning and Failure Indications.................................................................................................. 57
3.11 Contact Data................................................................................................................................ 58
4Index.............................................................................................................................................. 60

Becker Avionics
Installation and Operation
DV17551.03 Issue 03 June 2020 RCU6512 7
List of Figures
Some figures in this manual are for basic understanding and can be different to the actual design.
Figure 1: Application - RCU6512 + RT6512 + Antenna ......................................................................................... 14
Figure 2: RCU6512 ................................................................................................................................................ 15
Figure 3: Type plate (example) .............................................................................................................................. 25
Figure 4: Dimensions RCU6512 (front view).......................................................................................................... 27
Figure 5: Drilling template (rear panel mounting) ................................................................................................... 27
Figure 6: Dimensions - RCU6512 .......................................................................................................................... 28
Figure 7: RCU6512 - Connector Layout................................................................................................................. 29
Figure 8: RCU6512 with RT6512 ........................................................................................................................... 31
Figure 9: RT6512 with RCU6512 as Primary Controller ........................................................................................ 32
Figure 10: "CFG MODE" ........................................................................................................................................ 33
Figure 11: "INS MODE" ......................................................................................................................................... 33
Figure 12: "PASSWORD 0000" ............................................................................................................................. 34
Figure 13: "PASSWORD" ...................................................................................................................................... 34
Figure 14: "CU CONTRAST" ................................................................................................................................. 34
Figure 15: "DIMMING_INPUT"............................................................................................................................... 34
Figure 16: "CU MEMORY" ..................................................................................................................................... 35
Figure 17: "CU ERASE_MEM"............................................................................................................................... 35
Figure 18: "Memory Erased" .................................................................................................................................. 35
Figure 19: "RT CONFIG" ....................................................................................................................................... 35
Figure 20: "RT MOD_LIMIT".................................................................................................................................. 36
Figure 21: "RT SERVICE"...................................................................................................................................... 36
Figure 22: "CFG MODE" ........................................................................................................................................ 37
Figure 23: "CU DEV_INFO" ................................................................................................................................... 37
Figure 24: "CU BRIGHTNESS".............................................................................................................................. 38
Figure 25: "CU ILLUM" .......................................................................................................................................... 38
Figure 26: "CU SPACING"..................................................................................................................................... 38
Figure 27: "RT DEV_INFO".................................................................................................................................... 39
Figure 28: "RT TIME" ............................................................................................................................................. 40
Figure 29: "RT TEMP" ........................................................................................................................................... 40
Figure 30: "RT ERR_LATCH""............................................................................................................................... 40
Figure 31: RCU6512 - Controls and Indications .................................................................................................... 45
List of Abbreviations
List of Abbreviations
AF
Audio Frequency
ATT
Attenuation
AUX
Auxiliary
AWG
American Wire Gauge
CBIT
Continuous Built-In Test
CFG
Configuration
CH
Channel
COM
Communication
EASA
European Aviation Safety Agency
EMI
Electro Magnetic Interference
ETSO
European Technical Standard Order
EUROCAE
European Organization for Civil Aviation Equipment
FAA
Federal Aviation Administration
GND
Ground (Aircraft Ground)
GPS
Global Positioning System
HIRF
High Intensity Radiated Fields

Installation and Operation
Becker Avionics
8 RCU6512 DV17551.03 Issue 03 June 2020
List of Abbreviations
HMI
Human Machine Interface
IC
Intercom
IBIT
Initiated Build-In Test
LCD
Liquid Crystal Display
N/A
Not Applicable
PBIT
Power-On Built In Test
PTT
Push To Talk
PWR
Power
RCU
Remote Control Unit
RT
Remote Transceiver
RX
Receive
SQL
Squelch
SRC
Source
SW
Software
tbd
to be defined
TSO
Technical Standard Order
TF
TufLok®, self-locking screws and threads
TX
Transmit
VDC
Voltage Direct Current
VHF
Very High Frequency
VSWR
Voltage Standing Wave Ratio
Units
Units
A
Ampere
mA
Milliampere
°C
Degree Celsius
cm
Centimeter
dBm
Power Ratio In Decibel referenced to 1 mW
dB
Decibel
g
Gram
kg
Kilogram
kHz
Kilohertz
MHz
Megahertz
mm
Millimeter
Nm
Newton Meter
NM
Nautical Mile (1NM = 1852,0 m)
Ohm (Ω)
Resistance
s
Second
V
Volt
mV
Millivolt

Becker Avionics
Installation and Operation
DV17551.03 Issue 03 June 2020 RCU6512 9
Units
W
Watt
mW
Milliwatt
"
Inch
°
Angular degree
General Safety Definitions
Indicates a hazardous situation which, if not prevented, will result in death or
serious injury.
Indicates a hazardous situation which, if not prevented, could result in death or
serious injury.
Indicates a hazardous situation which, if not prevented, could result in minor or
moderate injury.
Is used to address practices not related to physical injury.
Safety instructions (or equivalent) signs indicate specified safety-related
instructions or procedures.

Installation and Operation
Becker Avionics
10 RCU6512 DV17551.03 Issue 03 June 2020
Disposal
The packaging material is inflammable, by burning toxic fumes may develop.
This product contains materials that fall under the special disposal regulation. We recommend the
disposal of such materials in accordance with the current environmental laws.
•Dispose circuit boards by a technical waste dump which is approved to take on e.g.
electrolytic aluminium capacitors. Do under no circumstances dump the circuit boards with
normal waste dump.
Warranty Conditions
The device(s) may be installed on an aircraft only by an approved aeronautical
company (e.g. Part 145) which shall also examine the installation.
Any change made by the user excludes any liability on our part (excluding the work described in this
manual).
•The device must not be opened.
•Do not make any modifications to the device, except for those described in the manual.
•Make connections to the inputs, outputs and interfaces only in the manner described in
the manual.
•Install the devices according to the instructions.
We cannot give any guarantee for other methods.
Conditions of Utilization
With this device you bought a product which was manufactured and tested before delivery with the
utmost care.
Please take your time to read the instructions which you ought to follow closely during installation and
operation.
Otherwise all claims under the warranty will become void and a decreased service life or even
damages must be expected.
The user is responsible for protective covers and/or additional safety measures in
order to prevent damages to persons and electric accidents.
Additional Conditions of Utilization
Please refer to "Safety-Conscious Utilization", page 17.
Non-Warranty Clause
We checked the contents of this publication for compliance with the associated hard and software. We
can, however, not exclude discrepancies and do therefore not accept any liability for the exact
compliance. The information in this publication is regularly checked, necessary corrections will be part
of the subsequent publications.

Becker Avionics
General Description
Introduction
DV17551.03 Issue 03 June 2020 RCU6512 11
1 General Description
In this chapter you can read about:
1.1 Introduction ................................................................................................................................. 12
1.2 Purpose of Equipment................................................................................................................. 13
1.3 Variants Overview ....................................................................................................................... 14
Software Status................................................................................................................. 14
1.4 Associated Devices..................................................................................................................... 14
Overview ........................................................................................................................... 14
1.5 Scope of Functionality................................................................................................................. 15
Illumination........................................................................................................................ 15
Channel Spacing / Frequency Range............................................................................... 15
Memory Channels / Frequency Storage........................................................................... 15
Squelch Operation ............................................................................................................ 15
Sidetone............................................................................................................................ 16
Emergency Operation....................................................................................................... 16
Configuration Mode........................................................................................................... 16
Installation Mode............................................................................................................... 16
Interface ............................................................................................................................ 16
Built-In Tests (BIT) ............................................................................................................ 16
1.6 Safety-Conscious Utilization ....................................................................................................... 17
1.7 Restriction for Use....................................................................................................................... 17
1.8 Technical Data ............................................................................................................................ 18
General Characteristics .................................................................................................... 18
Dimensions & Weight........................................................................................................ 18
Software............................................................................................................................ 18
Hardware .......................................................................................................................... 18
Continued Airworthiness................................................................................................... 18
Environmental Conditions................................................................................................. 19
Certifications ..................................................................................................................... 20
1.9 Order Code ................................................................................................................................. 21
RCU6512 .......................................................................................................................... 21
Accessories....................................................................................................................... 21
Documentation.................................................................................................................. 21
This manual describes the Becker Avionics Remote Control Unit RCU6512. The type plate on your
device shows the part number for identification purposes (see "Type Plate", page 25).
Before starting operation of the device(s) please read this manual carefully, with particular attention to
the description referring to your device(s).

General Description
Becker Avionics
Introduction
12 RCU6512 DV17551.03 Issue 03 June 2020
1.1 Introduction
The technical information in this document applies to the described product and variants of
RCU6512-(XXX).
•We also use the term RCU6512, RCU for descriptions instead writing the complete model
number.
•If a description refers to only one product variant is it specified.
The manuals “Maintenance and Repair” (M&R), “Installation and Operation (I&O)contain the sections:
Section
DV17551.04
M&R
DV17551.03
I&O
General
X
X
Installation
X
X
Operation
X
X
Theory of Operation
X
N/A
Maintenance and Repair
X
N/A
Illustrated Parts List
X
N/A
Modification and Changes
X
N/A
Circuit Diagrams
X
N/A
Certifications
X
N/A
Attachments
X
N/A

Becker Avionics
General Description
Purpose of Equipment
DV17551.03 Issue 03 June 2020 RCU6512 13
1.2 Purpose of Equipment
The Becker Avionics Remote Control Unit RCU6512 is made to operate with the VHF transceivers of
the RT6512 series.
Primary function of RCU6512 is to be the HMI (Human Machine Interface) for interaction between
users and VHF transceiver.
•The system of RCU6512 and transceiver is for voice communication between aircraft or
between an aircraft and ground stations, using the very high frequency band between
118.000...155.975 MHz (depends on RT6512 variant).
•The RCU6512 is made for installation in the instrument panel of an aircraft.
oThe dimensions correspond to the standard for instruments 58 mm (2¼ inch).
•Installation with standard supply 28 VDC or with 24 VDC batteries possible.
•The RCU6512 can operate at emergency voltage 18 V without any degradation of
performance.
•Channel spacing of 25 kHz or 8.33 kHz.
•Non-volatile memory for storing up to 40 frequencies/channels.
•Squelch functionality, ON/ OFF for squelch function of controlled transceiver.
•Data exchange between RCU6512 and VHF transceiver through a RS422 serial interface.
•Different built-in tests examine the correct operation of RCU6512 and transceiver.

General Description
Becker Avionics
Associated Devices
14 RCU6512 DV17551.03 Issue 03 June 2020
1.3 Variants Overview
RCU
6512
-
(X
X
X)
-
(
)
Identifier
Modification Index
Model Number
0 – Standard
0 – Standard
1 – Std. Panel Lighting
Software Status
Descriptions see "Software/Firmware Status – Functionality", page 25.
1.4 Associated Devices
These devices can operate with RCU6512
Device
Function
RT6512
Becker Avionics Remote-Controlled VHF Transceiver
This manual describes the RCU6512 from Becker Avionics. For other devices please refer to the
related manuals.
Overview
Figure 1: Application - RCU6512 + RT6512 + Antenna
Dual controller configuration for tandem operations is not available
with RCU6512.

Becker Avionics
General Description
Scope of Functionality
DV17551.03 Issue 03 June 2020 RCU6512 15
1.5 Scope of Functionality
•The RCU6512 is a compact and lightweight device.
•All controls and indicators are on the front panel.
•The equipment connector is at the rear side of the device.
•Installation with four screws (rear panel installation).
The dimensions correspond to the standard instrument diameter of 58 mm (2¼ inch).
Figure 2: RCU6512
Illumination
The illumination of LCD and push buttons can be controlled.
•Direct control from the front panel (through the user menu).
•External control through the dimming input lines.
oWith external dimming application the illumination curve (brightness to voltage relation)
is adjustable in configuration setup.
Channel Spacing / Frequency Range
The RCU6512 together with RT6512 is for voice communication between aircraft or between an
aircraft and ground stations using the VHF band between 118.000...155.975 MHz (depends on
RT6512 variant).
•8.33 kHz channel spacing: from 118.000...136.990 MHz.
•25 kHz channel spacing: from 118.000...136.975 MHz.
•25 kHz channel spacing in extended frequency from: 118.000... 136.975...155.975 MHz.
•The RCU6512 operates with all frequency band variants of RT6512 transceiver series.
Memory Channels / Frequency Storage
The RCU is capable to store up to 40 frequencies assigned to channel numbers in two banks.
•20 memories reserved for 25 kHz channels spacing mode.
•20 memories reserved for 8.33/25 kHz channel spacing mode.
The word "frequency" also used in the sense of "channel name", as defined in
EUROCAE, document ED-23C chapter 1.3.2.
In this document the word "memory channel" or "channel" means a memory place
identified by a channel number, where a frequency can be stored for later use.
Squelch Operation
•The squelch (muting) circuit suppresses unwanted audio noise.
•RCU6512 can change between ON/ OFF for squelch function of controlled transceiver.
•Squelch threshold is adjustable through the configuration mode.

General Description
Becker Avionics
Scope of Functionality
16 RCU6512 DV17551.03 Issue 03 June 2020
Sidetone
•The sidetone level is available on the line output of controlled transceiver during
transmission.
•The sidetone level is adjustable through the configuration mode.
Emergency Operation
•If the power supply voltage falls below 18 V, the RCU6512 stops operating.
•If power supply falls below 9.0 V, the device automatically powers off.
Configuration Mode
•Configuration of diverse parameters is made in the "Configuration Mode".
Installation Mode
•This mode is password-protected and for use by authorized maintenance organizations
during aircraft service on ground only.
Interface
•The RCU6512 has a RS422 interface for communication with the transceiver.
•This RS422 interface can receive and transmit serial asynchronous data.
Built-In Tests (BIT)
The RCU6512 has advanced Built-In-Test. It monitors most of internal circuits against failures. The
Built-In Tests (BIT) monitors some external (installation) conditions to increase the reliability of
RCU6512 and RT6512.
Types of BIT:
•Power-On Built-In Test (PBIT)
starts after Power ON the RCU6512 and RT6512 system.
•Initiated Built-In Test (IBIT),
on-request test of remote transceiver initiated by special command through serial protocol.
•Continuous Built-In Test (CBIT)
which continuously examines controller and transceiver operation.

Becker Avionics
General Description
Restriction for Use
DV17551.03 Issue 03 June 2020 RCU6512 17
1.6 Safety-Conscious Utilization
The device(s) may be installed on an aircraft only by an approved aeronautical
company (e.g. Part 145) which shall also examine the installation.
•The installation of the device into an aircraft may be carried out only by an
authorized installation company. The country regulations always have to be
obeyed.
•Use the product only in the specified conditions, see "Technical Data",
page 18.
•Power supply:
oDo not connect the device to AC sources.
oMake sure that the device is connected to the mandatory DC source, see
"Technical Data", page 18.
oDo not connect the device with reversed polarity to the DC source.
•Circuit breaker:
oUse the applicable fuses in the power supply line for protection of the
application, see "Technical Data", page 18.
Cleaning:
•Do not use aggressive cleaning agents e.g. Acetone.
oThese cleaning agents can cause damages.
Excessive pulses on the DC bus of the aircraft may cause damage on electrical
circuits of any installed instrument.
Do not power-on the device during engine start or shutdown.
1.7 Restriction for Use
The product is to be used inside the declared limits.

General Description
Becker Avionics
Technical Data
18 RCU6512 DV17551.03 Issue 03 June 2020
1.8 Technical Data
General Characteristics
RCU6512
Nominal supply voltage
14…28 VDC
Extended supply voltage
9.0...32.2 VDC
Emergency operation voltage (with RT6512)
18...20.5 VDC
Maximum Power Consumption
≤90 mA
Turn OFF Power Consumption
≤1 mA
Frequency Range
118.000...155.975 MHz
(depends on RT6512 variant)
Channel Spacing
25 kHz
8.33/25 kHz (up to 136.9916 MHz)
Device protection (internal fuse)
1 A
Dimming control
0…5 V, 0…14 V or 0…28 V
Storage temperature range
-55...+85 °C
Operating temperature range
-20...+55 °C, short-time +70 °C
Operating altitude
35 000 ft
Dimensions & Weight
RCU6512
Specifications
Dimensions HxW
61 x 61 mm (2.4 x 2.4 inch)
Depth of device
65.9 mm (2.59 inch)
Mounting depth
39.3 mm (1.55 inch)
Weight
0.2 kg (0.44 lbs)
Material
AlMg/Plastic
Panel color
Control-head coated black matt
Software
In accordance with EUROCAE/RTCA Document ED-12C/DO-178C the software is specified as:
Design Assurance Level (DAL) "C"
Hardware
The RCU6512 devices do not contain Complex Electronic Hardware (CEH).
Continued Airworthiness
•The RT6512 maintenance is defined as "on condition" only.
•No scheduled or regular maintenance of this product is required.

Becker Avionics
General Description
Technical Data
DV17551.03 Issue 03 June 2020 RCU6512 19
Environmental Conditions
The tests were done in accordance with EUROCAE/RTCA Document ED-14G/DO-160G under
consideration of the recorded environmental categories and conditions:
Environmental Condition Section Cat. Remarks
Temperature and Altitude
4
C4
--
Ground Survival Low Temperature
4.5.1
C4
-55 °C
Low Operating Temperature
4.5.2
C4
-20 °C
High Ground Survival Temperature
4.5.3
C4
+85 °C
High Short-Time Operating Temperature
4.5.3
C4
+70 °C
High Operating Temperature
4.5.4
C4
+55 °C
In-flight Loss of Cooling
4.5.5
Z
No forced cooling required
Altitude
4.6.1
C4
35 000 ft
Decompression
4.6.2
X
no test done
Overpressure
4.6.3
X
no test done
Temperature Variation
5.0
B
5 °C per minute
Humidity
6
A
Standard
Operational Shock and Crash Safety
7.2
7.3
B
--
Vibration
8
S
U
Category S - Curve M
Category U - Curve G
Explosion Atmosphere
9
X
no test done
Water Proofness
10
X
no test done
Fluids Susceptibility
11
X
no test done
Sand and Dust
12
X
no test done
Fungus Resistance
13
X
no test done
Salt Fog
14
X
no test done
Magnetic Effect
15
Z
1° deflection at < 0.3 m
Power Input
16
B(XX)
--
Voltage Spike
17
A
--
Audio Freq. Conducted Susceptibility
18
B
--
Induced Signal Susceptibility
19
ACX
--
Radio Frequency Susceptibility
20
SW
--
Emission of Radio Frequency Energy
21
B
--
Lightning Induced Transients
Susceptibility
22
A1X
E3X
Pin Test: Waveform A, Level 1
Cable Bundle Test: Waveform E,
Level 3
Lightning Direct Effects
23
X
no test done
Icing
24
X
no test done
Electrostatic Discharge
25
A
--
Fire, Flammability
26
X
no test done

General Description
Becker Avionics
Technical Data
20 RCU6512 DV17551.03 Issue 03 June 2020
Certifications
RCU6512 certification:
Number
Description
EASA.21O.10062248
In accordance with Commission Regulation (EU) No. 748/2012, Part 21,
Section A, Subpart O and ETSO-2C169a.
RCU6512 meets the requirements of:
Number
Description
ETSO-2C169a
VHF Radio Communications Transceiver Equipment Operating within Radio
Frequency Range 117.975 to 137.000 MHz.
TSO-C169a
VHF Radio Communications Transceiver Equipment Operating within Radio
Frequency Range 117.975 to 137.000 MHz.
Considered EUROCAE documents:
Number
Description
EUROCAE ED-23C
MOPS for Airborne VHF Receiver-Transmitter Operating in the Frequency
Range 117.975 - 137.000 MHz.
EUROCAE ED-12C
Software Considerations in Airborne Systems and Equipment Certification.
EUROCAE ED-94C
Supporting Information for ED-12C and ED-109A.
The RCU6512 does not influence the receiver and transmitter performance data
(despite the used channel frequency). By this, corresponding tests were not done
for qualification of RCU6512.