Amit RRAS-MCT/D20 User manual

rras-mctd20_g_en_102
RRAS-MCT/D20
IP audio digitizer
for rolling stock
Operation manual
Version 1.02

RRAS-MCT/D20
rras-mctd20_g_en_102 2/23
AMiT, spol. s r.o. does not provide any warranty concerning the contents of this
publication and reserves the right to change the documentation without
obligation to inform any body or authority about it.
This document can be copied and redistributed under following conditions:
1. The whole text (all pages) must be copied without any changes.
2. All redistributed copies must retain the AMiT, spol. s r.o. copyright notice
and any other notices contained in the documentation.
3. This document must not be distributed for purpose making of profit.
The names of products and companies used herein can be trademarks or
registered trademarks of their respective owners.
AMiT is a registered trademark
Copyright (c) 2018, AMiT, spol. s r. o.
Producer: AMiT, spol. s r. o.
Naskové 3/1100, 150 00 Praha
www.amit-transportation.com
Technical support: [email protected]

RRAS-MCT/D20
3/23 rras-mctd20_g_en_102
Contents History of revisions.........................................................................................4
Related documentation...................................................................................4
1Introduction..........................................................................................5
2Technical parameters..........................................................................6
2.1 Dimensions.....................................................................................................8
2.2 Recommended drawing symbol .....................................................................8
3Conformity assessment ......................................................................9
3.1 Other tests....................................................................................................10
4Manufacturer type plate ....................................................................11
5Power supply......................................................................................12
6Digital inputs ......................................................................................13
7Connecting a microphone.................................................................14
7.1 Wiring of interconnection cable.....................................................................15
8Output for loudspeaker .....................................................................16
9Sound input........................................................................................17
10 Ethernet...............................................................................................18
11 Configuration .....................................................................................19
11.1 The RESTORE button..................................................................................19
11.2 Factory setting –parameters........................................................................19
12 Mounting.............................................................................................20
12.1 Installation rules............................................................................................20
13 Ordering information and package contents ..................................21
13.1 Ordering information.....................................................................................21
13.2 Package contents.........................................................................................21
13.3 Accessories..................................................................................................21
14 Maintenance .......................................................................................22
15 Waste disposal...................................................................................23

RRAS-MCT/D20
rras-mctd20_g_en_102 4/23
History of revisions
Document name: rras-mctd20_g_en_102.pdf
Revision
Date
Author of change
Changes
100
18. 6. 2013
Čeřovský L.
New document
101
29. 7. 2013
Čeřovský L.
Correction of Technical parameters (supply).
102
11. 9. 2018
Pokorný M.
Chapter 2 –weight update
Chapter 3 –update of standards list
New chapter 4 added.
Related documentation
1. Application Note AP0037 –Principles of using Ethernet network
file: ap0037_en_xx.pdf

RRAS-MCT/D20
5/23 rras-mctd20_g_en_102
1 Introduction
RRAS-MCT/D20 is a IP audio signal digitizer, equipped with two audio inputs
an one output for loudspeaker. Microphone RRAS-GNM/A can be connected
stright to this digitizer.
Device is supplied from factory only with loader. Before first use must be loaded
an user application into device.
Input for microphone
Input for external sound source
Output for auxiliary loudspeaker ca. 5 W
Ethernet 100 Mbps interface
Mounting on base plate
Basic features

RRAS-MCT/D20
rras-mctd20_g_en_102 6/23
2 Technical parameters
Processor
STM32F207
Internal FLASH memory
512 KB
Internal RAM
128 KB
EEPROM
2 KB
Type
External, RRAS-GNM/A
Microphone powering
Phantom 3.3 V DC, software controlled
Signal amplitude
Max. 1 V pp.
Input impedance
Powering ON: 1.8 kΩ
Powering OFF: 10 kΩ
Connection point
Connector D-sub DE-9 plug
Recommended cabling
Shielded cable
Quantity
2
Type
Floating contact
Galvanic separation
No
Connection point
WAGO769-668
Wire cross section
0.08 mm2to 4 mm2
Recommended cabling
Shielded cable
Maximum cable length
3 m
Quantity
1
Microphone powering
Phantom 3.3 V DC, software controlled
Signal amplitude
1 V pp.
Input impedance
>10 kΩ
Frequency range
90 Hz to 7 kHz
Connection point
BNC connector
Recommended cabling
Shielded cable
Quantity
1
Impedance
Min. 8 Ω
Frequency range
30 Hz to 7 kHz
Nominal output power
Min. 5 W
Recommended loudspeaker imped.
Min. 8 Ω. 10 W
Connection point
WAGO769-668
Wire cross section
0.08 mm2to 4 mm2
Communication rate
100 Mbps
Galvanic separation
Yes
Galvanic separation strength
500 V AC /1 minute *)
Connection point
RJ45 connector, according to IEEE802.3
Recommended cabling
STP CAT5
Maximum segment length
100 m
*) Insulation must not be used for dangerous voltage separation.
Nominal power supply voltage
24 V DC
Power supply voltage range
16.8 V to 33.6 V DC
Power consumption
Max. 200 mA at 24 V DC
CPU
Microphone
Digital inputs
Sound input
Sound output
Ethernet
Note:
Power supply
*)

RRAS-MCT/D20
7/23 rras-mctd20_g_en_102
Connection point
WAGO769-668
Wire cross section
0.08 mm2to 4 mm2
Mechanical construction
Sheet metal cover
Color
RAL 9005
Mounting
To the base, M4 screws
Ingress protection rate
IP20
Weight
Netto –0,84 kg ±5%
Brutto –1,10 kg ±5%
Dimensions (w × h × d)
(204.6 × 101.8 × 45.2) mm
Unit overall mass of plastics
76 g
Included mass of flame retardant
plastics
76 g
Device does not contain
PUR, PVC, Asbestos
Device conforms
2011/65/EU (ROHS)
1907/2006EU (REACH)
Operating temperature range
-40 °C to 70 °C
Storage temperature range
-40 °C to 70 °C
Maximum ambient humidity
< 95 % non-condensing
Expected MTBF
> 150 000 h
Presumptive life expectancy
15 years
Device is supplied with loader, which enables software downloading by application
RRAS Configurator via Ethernet line.
None
Equipment is intended to operate up to 1 400 m above the sea level.
Equipment is designed to meet the Temperature Class TX.
According to EN 61373 standard, the equipment is classified in terms of vibrations
into Category 1, Class B (mounting to vehicle body).
Permissible supplying voltage drop-outs duration: max 10 ms (Class S2 according to
Chapter 3.1.1.2 of EN 50155 ed. 3).
For supply voltage switching are permissible conditions of C1 and C2 Class.
The equipment is not classified according to EN 50128 Railway applications –
Communications, signalling and processing systems –Software for railway control
and protection systems.
The equipment is not classified according to EN 50129 Railway applications –
Communication, signalling and processing systems –Safety-related electronic
systems for signalling.
Mechanics
Dangerous
materials
Temperatures
Others
Software
Components
with reduced
lifetime
Claims EN
50155 ed. 3
Safety
classification

RRAS-MCT/D20
rras-mctd20_g_en_102 8/23
2.1 Dimensions
204,6
101,8
156,9
167,6
45,2
d5,0
186,6
82,0
Fig. 1 –RRAS-MCT/D20 dimensions
2.2 Recommended drawing symbol
Following drawing symbol is recommended for RRAS-MCT/D20. Only part of it
will be visible in following examples.
RRAS-MCT/D20
PWR
X2
SP+
SP-
Vcc
GND
PE
3
4
5
1
2
7
8
6
AD2
AD1
COM
X1
ETH
RJ45
X3
GNM
D-Sub DE-9
X4
AUX IN
BNC
Fig. 2 –Recommended drawing symbol for RRAS-MCT/D20

RRAS-MCT/D20
9/23 rras-mctd20_g_en_102
3 Conformity assessment
The equipment meets the claims of Czech government decree NV117/2016; the
conformity assessment has been performed in accordance with harmonized
standard ČSN EN 50121-3-2 ed. 4.
Tested in accordance
with standard
Type of test
Classification
EN 55016-2-1:2014
Specification for radio disturbance and
immunity measuring apparatus and
methods - Part 2-1: Methods of
measurement of disturbances and
immunity - Conducted disturbance
measurements
Complies
EN 61000-6-4:2006
Electromagnetic compatibility (EMC) -
Part 6-4: Generic standards - Emission
standard for industrial environments
Complies
EN 61000-4-2:2009
Electromagnetic compatibility (EMC) –
Part 4-2: Testing and measurement
techniques –Electrostatic discharge
immunity test
Complies
EN 61000-4-3:2006
Electromagnetic compatibility (EMC) –
Part 4-3: Testing and measurement
techniques –Radiated, radio-frequency,
electromagnetic field immunity test
Complies
EN 61000-4-4:2012
Electromagnetic compatibility (EMC) –
Part 4-4: Testing and measurement
techniques –Electrical fast transient/burst
immunity test, power supply
Complies *)
EN 61000-4-5:2014
Electromagnetic compatibility (EMC) –
Part 4-5: Testing and measurement
techniques –Surge immunity test
Complies *)
EN 61000-4-6:2014
Electromagnetic compatibility (EMC) –
Part 4-6: Testing and measurement
techniques –Immunity to conducted
disturbances, induced by radio-frequency
fields
Complies
*) Some disturbing noise can be heard in the speaker when disturbances
appear.

RRAS-MCT/D20
rras-mctd20_g_en_102 10/23
3.1 Other tests
This product was assessed and approved for use in railway applications
according to standards:
Tested in accordance with
standard
Type of test
Result
EN 50155:2007
Elecronic equipment used on rolling
stock
Complies
EN 50121-3-2:2016
Railway applications –
Electromagnetic compatibility –Part
3-2: Rolling stock –Apparatus
Complies
EN 61373:2010
Railway applications –Rolling stock
equipment –Shock and vibration
tests
Category 1,
Class B
EN 61000-4-29:2000
Electromagnetic compatibility
(EMC) –Part 4-29: Testing and
measurement techniques –Voltage
dips, short interruptions and voltage
variations on d.c. input power port
immunity tests
Complies
EN 60068-2-1:2007
Environmental testing –Part 2-1:
Test A: Cold
Complies
EN 60068-2-2:2007
Environmental testing –Part 2-2:
Test B: Dry heat
Complies
EN 45545 2:2013+A1:2015
Railway applications - Fire
protection on railway vehicles - Part
2: Requirements for fire behaviour
of materials and components
HL3

RRAS-MCT/D20
11/23 rras-mctd20_g_en_102
4 Manufacturer type plate
Type identification plate is placed on the top side of the unit. Identification
plate’s information is summarized in the table below, for example of filled
manufacturer type plate see Fig. 3.
Description
Value
Note
–
AMiT logo
Manufacturers logo
–
QR code
Manufacturer’s QR code
TYPE
RRAS-MCT/D20
Computer type
S/N
Xxxxxxx
Serial number
MAC
xx-xx-xx-xx-xx-xx
MAC address
AUX FW
APP x.xx / LDR x.xx
Auxiliary firmware version
PoE
802.3af, Class 0
Power supply / consumption
WEIGHT
x.xx kg
Weight
TEST
OK-xx
Routine test result
HiPot
HiPot-OK
Insulation test result
Date
dd.mm.yyyy
Manufacture date
–
Logo CE
Unit was assessed and complies
with EU legislative requirements
–
Crossed out dustbin logo
with a full stripe
The disposal of electronic
equipment is subject to the
regulations on handling electrical
waste
TYPE
WEIGHT: x.xx kg
DATE: xx.xx.xxxx
HiPot: HiPot - OK
TEST: OK-VS
FW: APP x.xx / LDR x.xx
PoE: 802.3af, Class 0
S/N AB12345
RRAS-MCT/D20
MAC xx-xx-xx-xx-xx-xx
Fig. 3 –Example of manufacturer’s type plate

RRAS-MCT/D20
rras-mctd20_g_en_102 12/23
5 Power supply
The IP audio digitizer RRAS-MCT/D20 can be powered by 24 V DC vehicle
onboard network.
Power supply terminals
Fig. 4 –Power supply connector location
24 V=
RRAS-MCT/D20
PWR
X2
SP+
SP-
Vcc
GND
PE
3
4
5
1
2
7
8
6
AD2
AD1
COM
X1
ETH
RJ45
X3
GNM
D-Sub DE-9
X4
AUX IN
BNC
Fig. 5 –IP audio digitizer power supply wiring
Terminal
Label
Signal type on RRAS-MCT/D20
1
PE
Module chassis
2
GND
Power supply, ground
3
Vcc
Power supply, +24 V DC
The PE terminal must be connected with vehicle frame.
Wiring
example
Wiring of X2
connector
(power
supply)
Note:

RRAS-MCT/D20
13/23 rras-mctd20_g_en_102
6 Digital inputs
IP audio digitizer has two digital inputs intended for unit configuration. Their
meaning is given by user application.
Digital inputs
Fig. 6 –Location of connector with digital inputs
By coupling terminals AD1 and AD2 with common terminal COM is the input
activated. The not-connected input is inactive.
Terminal
Label
Signal type on RRAS-MCT/D20
6
COM
Common terminal for digital inputs
7
AD1
Digital input 1
8
AD2
Digital input 2
Using
Wiring of X2
connector
(inputs)

RRAS-MCT/D20
rras-mctd20_g_en_102 14/23
7 Connecting a microphone
The microphone is connected to IP audio digitizer through D-sub DE-9
connector. Microphone itself is not supplied together with audio digitizer, it must
be ordered separately.
RRAS-GNM/A microphone connector
Fig. 7 –Location of connector for microphone
Terminal
Signal
Signal type on RRAS-MCT/D20
1
LED A
LED button „A“ output
2
LED B
LED button „B“ output
3
MIC-
Microphone, ground
4
MIC+
Signal from microphone, input
5
BCKL-
Buttons backlight powering
6
GND
Digital power supply ground
7
BUTT A
Button „A“ input
8
BUTT B
Button „B“ input
9
BCKL+
Buttons backlight powering
RRAS-MCT/D20
PWR
X2
SP+
SP-
Vcc
GND
PE
3
4
5
1
2
7
8
6
AD2
AD1
COM
X1
ETH
M12
X3
GNM
D-Sub DE-9
X4
AUX IN
BNC
RRAS-GNM/A
X1
MCT
D-Sub DE-9
Fig. 8 –Connection of RRAS-GNM/A microphone
Wiring of X4
connector

RRAS-MCT/D20
15/23 rras-mctd20_g_en_102
7.1 Wiring of interconnection cable
The interconnection cable must be shielded.
D-sub DE-9 D-sub DE-9
Fig. 9 –Wiring of interconnection cable
D-sub DE-9 plug
D-sub DE-9 socket
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
Wiring of
cable pins

RRAS-MCT/D20
rras-mctd20_g_en_102 16/23
8 Output for loudspeaker
To the IP audio digitizer can be attached an auxiliary loudspeaker for silent
monitoring and sound indication. Style of loudspeaker support depends on used
application.
Loudspeaker terminals
Fig. 10 –Location of connector with terminals for external loudspeaker
Terminal
Label
Signal type on RRAS-MCT/D20
4
SP-
Loudspeaker for silent monitoring -
5
SP+
Loudspeaker for silent monitoring +
Loudspeaker
FR8WP8OHM (8  /15W)
+
-
RRAS-MCT/D20
PWR
X2
SP+
SP-
Vcc
GND
PE
3
4
5
1
2
7
8
6
AD2
AD1
COM
X1
ETH
RJ45
X3
GNM
D-Sub DE-9
X4
AUX IN
BNC
Fig. 11 –Connection of loudspeaker for silent monitoring
Wiring of X2
connector
(loudspeaker)

RRAS-MCT/D20
17/23 rras-mctd20_g_en_102
9 Sound input
To the IP audio digitizer can be connected a source of sound signal. Support of
this input depends on used application.
Sound input connector
Fig. 12 –Location of connector for sound signal
The sound signal is connected through standard BNC connector.

RRAS-MCT/D20
rras-mctd20_g_en_102 18/23
10 Ethernet
The Ethernet interface connector is located on the audio digitizer front side.
LED indicators are located next to Ethernet connector.
Ethernet connector
Fig. 13 –Location of Ethernet line connector
Activity of Ethernet line is indicated by LEDs (LNK and ACT) next to Ethernet
connector. The SPD LED indicates attaching of 100 Mbps Ethernet network
cable, while ACT LED when blinking, indicates transmitting or receiving of data.
Details about Ethernet network are stated in Application Note AP0037.
Line status
indication
Note:

RRAS-MCT/D20
19/23 rras-mctd20_g_en_102
11 Configuration
11.1 The RESTORE button
Factory setting of IP audio digitizer is activated by pressing the button
RESTORE on the front panel while unit powering is switched on. The small
button can be pressed by blunt tiny stick like ballpoint refill etc. Release the
buuton after triple LED blink.
RESTORE button
Fig. 14 –Location of RESTORE button
11.2 Factory setting –parameters
Parameter
Default value
Unit IP address
192.168.1.1
Network mask
255.255.255.0
Outgoing gateway
0.0.0.0

RRAS-MCT/D20
rras-mctd20_g_en_102 20/23
12 Mounting
IP audio digitizer RRAS-MCT/D20 is designed to mount into distributor.
Unit is fastened by four M4 screws.
12.1 Installation rules
Technical parameters of IP audio digitizer are warranted only when this wiring
principles are applied.
Connect the PE terminal of X2 connector to the vehicle frame with as low as
possible impedance.
For service and when utilized within the distributor frame can be used an
unshielded cable (UTP patch cable). Apply the STP cabling for permanent use
outside the distributor frame.
Earthing
Ethernet
interface