RACOM MD400 User manual

Operating manual
.
Narrowband modems – PROFI
MD400, MD300, MD160
.
version 1.10
4/17/2018
www.racom.eu
RACOMs.r.o. •Mirova1283•59231NoveMestonaMorave•CzechRepublic
Tel.:[phone]•Fax:[phone]•E-mail: [e-mail]

Table of Contents
Introduction .......................................................................................................................................... 5
1. Radio modem MD400 (MD300, MD160, MD160P) ......................................................................... 6
2. Description of Radiomodem MD400 (MD300, MD160) ................................................................... 7
2.1. Radio part ............................................................................................................................. 7
2.2. Modem part .......................................................................................................................... 7
2.3. Supplying .............................................................................................................................. 7
2.4. Radio Modem Assembly ...................................................................................................... 7
3. Connectors ...................................................................................................................................... 9
3.1. Antenna ................................................................................................................................ 9
3.2. Serial Interface ..................................................................................................................... 9
3.3. Ethernet .............................................................................................................................. 11
3.4. Analog and Digital Inputs and Outputs ............................................................................... 12
3.5. Supply Connector ............................................................................................................... 14
3.6. Information LED ................................................................................................................. 14
3.7. Service Connector .............................................................................................................. 15
3.8. View of Radio Modem ........................................................................................................ 16
4. Table of Technical Parameters ...................................................................................................... 17
5. Dimensional Diagram and Labeling Modems ............................................................................... 19
6. Modem installation ........................................................................................................................ 21
6.1. General description of installation ...................................................................................... 21
6.2. Antenna installation ............................................................................................................ 21
6.3. Power supply ...................................................................................................................... 22
6.4. Technology connection ....................................................................................................... 22
6.5. Mechanical mounting ......................................................................................................... 22
7. Conditions for MD400 Operation ................................................................................................... 24
7.1. Important Warning .............................................................................................................. 24
7.2. Conditions of Liability for Defects and Instructions for Safe Operation of Equipment. ....... 24
7.3. RoHS and WEEE compliance ............................................................................................ 25
7.4. Product Conformity ............................................................................................................. 26
7.5. Country of Origin ................................................................................................................ 27
7.6. Limitations of Use ............................................................................................................... 28
A. Revision History ............................................................................................................................ 29
List of Figures
1. Radio modem MD160 with Cannon connectors, MD400 with Cannon connectors and MD300
with screw clamps ............................................................................................................................... 5
3.1. RS232 DSUB9 female .................................................................................................................. 9
3.2. Data cable RS485 connections .................................................................................................. 10
3.3. Labelling of serial interface terminals ......................................................................................... 11
3.4. RJ-45F ........................................................................................................................................ 12
3.5. Wiring diagrams for analog and digital inputs and outputs ........................................................ 12
3.6. Description of analog and digital inputs and outputs .................................................................. 13
3.7. Examples of wiring analog inputs and outputs ........................................................................... 13
3.8. Power connector & information LED .......................................................................................... 14
3.9. Service connector ....................................................................................................................... 15
3.10. Service cable connector connections ....................................................................................... 15
3.11. View of radio modem — description of connectors, model with DSUB (Canon) connectors
and with terminals, numbering of slots .............................................................................................. 16
5.1. Mounting dimensions of the radiomodem MD400, MD300 and MD160 .................................... 19
3© RACOM s.r.o. – Narrowband modems – PROFIMD400, MD300, MD160

6.1. Example of a typical installation of a data network radio point ................................................... 21
6.2. Example of the layout of equipment in a switchboard ................................................................ 23
7.1. Warning sticker IEC 60417-5041 (DB:2002-10) ......................................................................... 25
7.2. EU Declaration of Conformity ..................................................................................................... 26
7.3. Country of Origin declaration ..................................................................................................... 27
List of Tables
3.1. Table of data connector RS232 connections ................................................................................ 9
3.2. Table of data connector RS422 connections .............................................................................. 10
3.3. Table for distinguishing LEDs for RxD and TxD by colour ......................................................... 10
3.4. Table of Ethernet to cable connector connections ..................................................................... 12
3.5. Table of digital and analog input and output parameters ........................................................... 13
3.6. Table of service connector connections ..................................................................................... 15
3.7. Slot options ................................................................................................................................. 16
4.1. Table of technical parameters MD400, MD300, MD160 ............................................................ 17
4.2. Standards complied .................................................................................................................... 18
4.3. Railway Safety Appliance Standards Regulations ..................................................................... 18
Narrowband modems – PROFIMD400, MD300, MD160 – © RACOM s.r.o.4
Narrowband modems – PROFI
MD400, MD300, MD160

Introduction
This operator manual serves as the primary document for familiarising users with the parameters of
the radio modem, its properties, modifications and with the parameters of connecting parts. In order to
master all the functions of the radio modem and the MORSE system you should refer to other documents.
Fig. 1: Radio modem MD160 with Cannon connectors, MD400 with Cannon connectors and MD300
with screw clamps
5© RACOM s.r.o. – Narrowband modems – PROFIMD400, MD300, MD160
Introduction

1. Radio modem MD400 (MD300, MD160, MD160P)
MD400, MD300 and MD160 are conceptually new radio modems designed for transmitting data in the
VHF and UHF bands. The radio modem uses 4-state FSK modulation providing for a maximum signalling
rate of 21.68 kbit/s.
The radio modem s of modular design with one to four standard RS232 ports (an RS422 or RS485
port can be used in place of two of them) available to the user. The configuration can be extended by
an Ethernet interface and also by a module with analog and digital inputs/outputs. It is generally man-
ufactured with two analog inputs and outputs and with two digital inputs and outputs.
The radio data transceiver module can be configured to a random frequency of the transmitter and re-
ceiver in the 3.2 MHz frequency range in a 25 kHz channel raster. The output and input working fre-
quencies are mutually independent and are derived from the frequencies of four phase-hung systems
programmed by the transceiver microprocessor. Channel settings are stored in the transceiver EEPROM
memory and the FLASH memory module of the modem whose communication processor controls the
operation of the transceiver microprocessor. The power of the radio modem transmitter is digitally set
in sixteen steps from 0.1 to 5 W. In the case of high-performance radio modems of type P (160 MHz
band only) also in sixteen steps, but up to 25 W.
The design and construction of this device allows for long-term loading and for this reason it is
primarily determined for continuously running applications.
Software control is compatible with the operation and configuration of the other radio modems of the
MORSE system. A description of software control and configuration is available in publications describing
MORSE Firmware.
Important
The radio modem is equipment which can only be operated in the Czech Republic on the
basis of Permission to operate transmitting radio stations issued by the Department of Fre-
quency Spectrum Management at the Czech Telecommunication Office.
Narrowband modems – PROFIMD400, MD300, MD160 – © RACOM s.r.o.6
Radio modem MD400 (MD300, MD160, MD160P)

2. Description of Radiomodem MD400 (MD300, MD160)
2.1. Radio part
The architecture of MD400, MD300 and MD160 radio modems resolves most of the requirements
placed on a top quality user friendly radio modem with a very short switching time between receiving
and transmitting. Frequency synthesis enables operation on any random channel from a given frequency
band. The operation of the radio data transceiver module is controlled and diagnosed by the micro-
controller. The receiving part of the radio modem works with double mixing. Concentrated selectivity
is divided between both intermediate frequency levels. The first filter carries out basic channel pre-se-
lection up until attenuation which ensures the linear function of the following second mixer and interme-
diate frequency amplifier. The second filter of concentrated selectivity has an attenuation characteristic
necessary for channel selection in the used channel spacing of 25 kHz. Logic circuits, switching stations
between modes of receiving and transmitting, have high noise immunity and switch respective blocks
sequentially. This minimises most transient parasite states and optimises bandwidth during switching.
Station block modes are logically tied and switching of the station to transmitting mode is tied to the
frequency synthetiser lock, the internal temperature of the radio transceiver module and the value of
the supply voltage.
2.2. Modem part
he control microcomputer has 4 MB of FLASH memory and 16 MB of RAM memory available. The
battery, real time backup supply, detector of supply voltage failure and watch dog circuits belong
amongst the other circuits of this block. If there is a supply voltage failure the fact is recorded into
memory with the respective time data thanks to the charge stored in electrolytic capacitors. The user
therefore has information available about the time and duration of possible faults caused by power
failures. It is possible to connect equipment with signalling rates up to 115.2 kbit/s to the modem via
the RS232 data interface. RS232 interface converters are protected against overvoltage with TRANSIL
elements. A lithium battery is used for backing up in the modem part.
Note
Owing to the use of lithium batteries in the modem part it is not recommended to store them
for a period of longer than 2 years.
2.3. Supplying
The radiomodem is supplied by the DC current 13.8 V. The consumption in the quiet state is from 350
to 500 mA according to module used, the consumption at transmitting is up to 2 A. (high-performance
radio modems of type P – up to 5 A) The modem can be set in the SLEEP mode when the consumption
drops down to 2.5 mA. The return in the active mode can be done by the signal inputting on the serial
port or after a preset time.
2.4. Radio Modem Assembly
Radio modems MD400 (MD300, MD160) are special devices which require skilled assembly. All supplied
equipment is assembled by RACOM at the user’s site. For subsequent maintenance RACOM specially
trains the user’s skilled staff and as an additional aid provides them with Operating regulations for radio
data networks and MORSE Firmware – Documentation.
7© RACOM s.r.o. – Narrowband modems – PROFIMD400, MD300, MD160
Description of Radiomodem MD400 (MD300, MD160)

High-performance radio modems of type P (see serial code) need to be installed in a manner which
takes into consideration their high demand for heat dissipation, i.e. the rear side of the modem needs
to lie tightly against the mounting plate, as it also serves as a heat sink.
Important
CAUTION! Danger of explosion upon replacing the incorrect type of battery. Follow the
manufacturers instructions for handling used batteries
Narrowband modems – PROFIMD400, MD300, MD160 – © RACOM s.r.o.8
Description of Radiomodem MD400 (MD300, MD160)

3. Connectors
3.1. Antenna
In order to be able to connect the aerial the radio modem is fitted with a single N-type connector for
transmitting (Tx) and a single SMA-type connector for receiving (Rx). Use the corresponding type and
impedance of mate. For the aerial lead we recommend an RG213 cable for Tx for lengths up to 25 m
and H1000 for longer aerials and we recommend an RG158 cable for Rx.
Important
CAUTION. The radio modem cannot be connected to the power supply without the antenna
connected (or corresponding artificial load). Otherwise this could lead to damage to the radio
part of the modem.
3.2. Serial Interface
The router can be equipped with serial ports RS232 or RS422/485, the ports can be optical isolated.
According to the configuration it is possible to use a terminal block or DSUB 9 (Canon) connectors for
connecting data cables via the serial interface. See Chapter Dimensional Diagram and Labeling. Data
rate on the serial interface can be from 200 bps to 230,400 bps.
3.2.1. RS232, RS422 and RS485 Connectors
a) Table of data connector RS232 connections
Fig. 3.1: RS232 DSUB9 female
Tab. 3.1: Table of data connector RS232 connections
DSUB9F
pin
Screw
terminals
RS232
signal
81CTS
72RTS
23RxD
34TxD
55GND
4DTR
6DSR
1CD
9RI
9© RACOM s.r.o. – Narrowband modems – PROFIMD400, MD300, MD160
Connectors

b) Table of data connector RS422 connections
Tab. 3.2: Table of data connector RS422 connections
DSUB9F
pin
Screw
terminals
RS422
signal
71TxD-
32TxD+
83RxD-
24RxD+
55GND
c) Connection diagram of data cable RS485
When you are connecting RS485, your “A” has to be connected to TxD+ and RxD+ simultaneously
and “B” to TxD- and RxD- simultaneosly.
line A (+)
line B (–)
2
7 6
3
8
9
14
5
Screw terminals for RS485 DSUB9F
1
line B
line A
SCC
2 3 4 5
RS485
RS485
Fig. 3.2: Data cable RS485 connections
Note - For data connector RS485 connection see Table of data connector RS422 connections.
Important - For making data cables for connecting the user´s terminal equipment to the serial port we
recommend using a shielded cable, particularly in an industrial environment, and connecting the
shielding to GND (pin No. 5). When using a multi-core cable all free conductors should be connected
to pin No. 5. In the case of a galvanically separate port for RS485 (RS422) only ground one side of the
data cable. We recommend using only the necessary minimum length for data cables.
3.2.2. Distinguishing Data Modules by Colour
For RS232 RxD is the output from the router (approx. -6V when inactive) and TxD is the input to the
router (according to the RS 232 standard). Hardware versions of the interface can be distinguished
according to the colours of LED diodes next to the connector.
Tab. 3.3: Table for distinguishing LEDs for RxD and TxD by colour
Colour (RxD / TxD)Type of interface
red / greenRS232
orange / greenRS232 opt. separated
orange / yellowRS422/485 opt. separated
Narrowband modems – PROFIMD400, MD300, MD160 – © RACOM s.r.o.10
Connectors

3.2.3. Labelling of SCC terminals
TxD
RxD
DTE
PLC
TxD
RxD
Red LED
DCE
MORSE ROUTER
Green LED
Fig. 3.3: Labelling of serial interface terminals
The SCC ports of the router are DCE type devices. Based on standards the receiver terminal RxD of
the connected DTE device is connected to the transmitting terminal of the router's SCC port which is
also labelled RxD. Similarly the red LED indicating transmission from SCC is labelled RxD.
3.3. Ethernet
• Connector RJ-45 for Ethernet 10BaseT and 100BaseT corresponds to the EIA TIA T568B standard.
• Informative LED diodes indicate:
○ Tx – yellow - output or input active (*Tx - red - output from ETH channel)
○ Rx – yellow - output or input active (*Rx - green - input to ETH channel
Note
Green LED Tx and yellow LED Rx flash simultaneuosly. The informations marked
(*) are valid for hw version produced until 07/2008.
○ 100 – yellow - if lit the 100Base-TX net is indicated otherwise is 10Base-T
○ LINK – green - indicates correctly connected link
○ F.D. – green - indicates full duplex operation
• The direct cable serves for connecting to the Ethernet network via the hub (repeater) or switch-hub
(router).
• A crossed cable serves for connecting only two devices - MR400-MC100, MR400-PC, etc.
The ETH module consumption is 30 mA (60 mA until 07/2008).
The following table contains connector connections and colours of conductors. For the crossed cable
the order of conductors on one side is the same as for the direct cable.
11© RACOM s.r.o. – Narrowband modems – PROFIMD400, MD300, MD160
Connectors

Fig. 3.4: RJ-45F
Tab. 3.4: Table of Ethernet to cable connector connections
Crossed cableDirect cableSignalPIN
white - greenwhite - orangeTX+1
greenorangeTX-2
white - orangewhite - greenRX+3
blueblue—4
white - bluewhite - blue—5
orangegreenRx-6
white - brownwhite - brown—7
brownbrown—8
3.4. Analog and Digital Inputs and Outputs
The module of analog and digital inputs and outputs (ADIO) is designed for :
• creating 20 mA current loops
• switching loads supplied with DC and AC current
• scanning digital signals
Each functional group of terminals is galvanically separated from the rest of the device as shown on
the internal layout diagram for the ADIO module on the image below:
+A OUT 0 +A IN 0
+A OUT 1 +A IN 1
A IN 0, 1 DIN 1
+DIN 1
A OUT 0, 1
DIN 0D OUT 0
+DIN 0D OUT 0
D OUT 1
D OUT 1
Analog outputs Analog inputs Digital inputsDigital outputs
Fig. 3.5: Wiring diagrams for analog and digital inputs and outputs
3.4.1. Labelling
Individual terminals of terminal blocks are labelled:
Connector A OUT - analog outputs
Connector A IN - analog inputs
Connector D OUT - digital outputs
Connector D IN - digital inputs
Terminal UP this clamps pair is not used
Narrowband modems – PROFIMD400, MD300, MD160 – © RACOM s.r.o.12
Connectors

+
+ + +
+
+ + + +
–
– – –
–
– – – –
A OUT A IN D OUT D IN UP
11 1 1 00 0 0
Fig. 3.6: Description of analog and digital inputs and outputs
3.4.2. Parameters
Tab. 3.5: Table of digital and analog input and output parameters
passive
– bipolar SSR switch design
– voltage for supplying load max. 30 V DC, 24 V AC
– switched current typically 300 mAresistance in on state
max. 1 Ω
– protection against current overload in on state
– protection against overvoltage in off state
2 × optically separated
digital output
passive
– passive optical element design
– input voltage 0–2,3 V will be evaluated as log. 0
– input voltage 2–30 V will be evaluated as log. 1
– max. value of input voltage 30 V
2 × optically separated
digital input
active
– current source 4–20 mA
– load resistance max. 250 Ω
– settings accuracy better than 0.1 %
2 × optically separated
analog output
passive
– sensitivity 0–20 mA (or after sw configuration 4–20 mA)
– accuracy of measured values better than 0.1 %
– input resistance 60 Ω
– no protection against current overload
– max. value of input current 50 mA
2 × optically separated
analog input
Analog inputs 0 and 1 have -(minus) terminals connected and galvan. separated from router GND.
Analog outputs 0 and 1 have -(minus) terminals connected and galvan. separated from router GND.
The MORSE router used in the
diagram showing examples of wir-
-A in
-A in
+A in
+A in
-A out
-A out
+A out
+A out
-A out
-
+A out
+
-A in
-
+A in
+
=-
+
voltage supply
technology
with an active
current loop
transmitter or
MORSE
router
technology,
passive
current
loop
transmitter
MORSE
router
MORSE
router
ing can, of course, be replaced by
any MORSE system equipment
(e.g. MD160, MX 160, MWxxx,
MRxxx, MC100, MG100i, ...)
Fig. 3.7: Examples of wiring analog inputs and outputs
13© RACOM s.r.o. – Narrowband modems – PROFIMD400, MD300, MD160
Connectors

3.5. Supply Connector
Terminals of this connector are labelled in the standard manner. Only DC voltage in the range from
10.8 to 15.6 V can be connected. Connecting higher voltage may damage the radio modem.
Terminal PI (power indicator) - if the radio modem is fed from the MS2000 power supply information
about supply method from source clamp MAIN PWR OFF can be lead:
Fig. 3.8: Power connector & information LED
•level TTL1 or unconnected clamp - network supply
• level TTL0 or grounded clamp - battery supply
Maximal supply cable length is 3 m.
3.6. Information LED
Information LED diodes next to the supply connector:
• RF Tx — radio modem transmits RF frequency into antenna
• RS SYNC — radio modem received message header which was determined for it
• Three following LED (signal strength):
RSS -85dBm and strongerONONON
RSS -85 až -95dBmONONOFF
RSS -95 až -115dBmONOFFOFF
RSS -115dBm and weakerOFFOFFOFF
• POWER ON — radio modem is correctly supplied
Narrowband modems – PROFIMD400, MD300, MD160 – © RACOM s.r.o.14
Connectors

3.7. Service Connector
The service connector RJ-12 serves for short-term connections of the service cable during local adjust-
ment of MORSE router parameters. Upon attaching the connector (connecting to the RS232 link
(RxD,TxD, GND)) the router automatically switches to service mode and the module slot 1 disconnects.
Slots numbering see section Section 3.8, “View of Radio Modem”.
Fig. 3.9: Service connector
Tab. 3.6: Table of service connector connections
output of modulation from RF part of routerAF_OUT1
RS232 RxD output from routerSER_RxD2
RS232 TxD input to routerSER_TxD3
input modulation to radio part of routerMOD_BSB4
groundGND5
keying of TX carrier waves for service purposesPTT6
Warning
Be careful, RJ-12 pin numbering is not standardized.
1 2 3 4 5 6
pin 5
pin 3
pin 2
Cannon DSUB9F
RX data
TX data
GND
Fig. 3.10: Service cable connector connections
Important
ATTENTION! The service mode is not suitable for normal operation
15© RACOM s.r.o. – Narrowband modems – PROFIMD400, MD300, MD160
Connectors

3.8. View of Radio Modem
POWER
RF Tx POWER ON RF SYNC
+
+
PI
GND
GND
Rx
Tx 100
LINK
F. D.
SERVICE
ETH0
+
+ + +
+
+ + + +
–
– – –
–
– – – –
A OUT A IN D OUT D IN UP
11 1 1 00 0 0
Rx
Tx
3
2
SCC2 SCC3
SCC0
SCC1
Rx
Rx
Tx
Tx
POWER
RF Tx POWER ON RF SYNC
+
+
PI
GND
GND
SCC0
SCC1
Rx
Rx
Rx
Tx
Tx
Tx
100
LINK
F. D.
SERVICE
ETH0
SCC2 SCC3
Rx
Tx
3
2
+
+ + +
+
+ + + +
–
– – –
–
– – – –
A OUT A IN D OUT D IN UP
11 1
1
1
00 0 0
CTS
RTS
TxD
RxD
GND
CTS
RTS
TxD
RxD
GND
2 3 4 5
1 2 3 4 5
SLOT
1
SLOT
2
SLOT
3
SLOT
4
SLOT
5
MD400 MD400
Fig. 3.11: View of radio modem — description of connectors, model with DSUB (Canon) connectors
and with terminals, numbering of slots
Tab. 3.7: Slot options
Optional modules
ADIO (analog and digital inputs and outputs)slot 5
Ethernet 10/100 Mbpsslot 4
2×RS232slot 3
RS232 or galv.sep. RS232 or RS422/RS485
slot 2
slot 1
Narrowband modems – PROFIMD400, MD300, MD160 – © RACOM s.r.o.16
Connectors

4. Table of Technical Parameters
Tab. 4.1: Table of technical parameters MD400, MD300, MD160
MD070: 69–85 MHz *
Frequency range MD160: 135–175 MHz
MD300: 290–350 MHz *
MD400: 350–470 MHz *
25 kHz or 12.5 kHzChannel spacing
software in range +3.2 MHz from base frequencyMeans of setting working frequency
< 1.5 msSwitching time transmitting/receiving
better than -107 dBmReceiver sensitivity for BER 10-3
0.1–5 W
Software adjustable output power 1)
0.1–25 W 160 MHz band only, type of construction P
21.68 kbit/s in 25 kHz channel
Max. modulation rate for transmitting 10.84 kbit/s in 12.5 kHz channel
Optional modules
ADIO (analog and digital inputs and outputs)slot 5
Ethernet 10/100 Mbpsslot 4
2×RS232slot 3
RS232 or galv.sep. RS232 or RS422/RS485
slot 2
slot 1
1 × N (Tx) + 1× SMA (Rx)Antenna connector
> 500.000 hours (> 50 years)MTBF(Mean Time Between Failure)
13.8 VSupply nominal voltage
10.8–15.6 VSupply voltage range
380 mA + modules: (Eth. 30 mA, ADIO 50 mA, SCC 5 mA,)Idle consumption (Rx) 2)
1.3 A / 1 W; 2.0 A / 5 W; 5.5 A / 25 WTransmission consumption (Tx) 2)
2.5 mAConsumption in SLEEP mode
-30 to +70 °C (-22 to +158 °F)Operating range of temperature
5 to 95% non-condensingHumidity
-40 to +85 °C (-40 to +185 °F)Storage range of temperature
208×108×63 mm (71 mm DIN rail including)
Mechanical dimensions 208×108×67 mm type of construction P
198×65 mm, ø 4.8 mmSpacing of fastening holes
1.3 kg; 1.5 kg type of construction PWeight
1) Availability of specific types and frequencies check here1, please. Presently these types2are under
mass production. Types marked * can be manufactured individually due to significant volume.
2) Approximate values dependent on frequency and modem type.
1http://www.racom.eu/eng/products/rfp.html
2http://www.racom.eu/eng/products/radio-modems-mr400.html#specifications
17© RACOM s.r.o. – Narrowband modems – PROFIMD400, MD300, MD160
Table of Technical Parameters

Tab. 4.2: Standards complied
ETSI EN 300 113-2 V1.3.1, FCC part 90, RSS 119Radio parameters
ETSI EN 301 489-5 V 1.3.1;
ETSI EN 300 113-1 V 1.5.1
EMC (Electromagnetic Compatibility)
CSN EN 60 950:2001Electrical safety
UN Regulation No.10 (EHK No.10)Wheeled vehicle usage
CSN EN 50 385, CSN EN 50 383Human exposure electromagnetic fields
Tab. 4.3: Railway Safety Appliance Standards Regulations
CSN EN 50155 ed. 2nd: 2002. art. 10.2.8.2
CSN EN 50121 art. 7: tab. 3 and 4
Electronic appliances in railway vehicles
CSN EN 50121-3-2 art. 8EMC (Electromagnetic Compatibility)
CSN EN 61373Vibrations and beats
Upon installation in railway vehicles, where there is a high level of interference, special attention should
be given to the communication interface. In such cases it is necessary to use shielded cables and
correctly grounded twisted pairs.
Note
The standard CSN EN 50155 (Electronic equipment in railway vehicles) does not apply to
analog inputs and outputs and to the interface in the 1st slot. Therefore they are not recom-
mended for use, and in an environment specified according to this standard no warranty
applies to their use.
Narrowband modems – PROFIMD400, MD300, MD160 – © RACOM s.r.o.18
Table of Technical Parameters

5. Dimensional Diagram and Labeling Modems
Dimensional Diagram
mobile mounting 4×M4
DIN 35 rail mounting 2×M4 not for P
RF power 25 W (type P) 4×M4 only
Fig. 5.1: Mounting dimensions of the radiomodem MD400, MD300 and MD160
The modem can be fasten by four screws M4 (for mobile application especially) or by the mounting rail
DIN35 (stable applications). The flexile clamps mounted in the central holes are used for fastening on
the DIN35 rail.
For the high-performance P model the modem is mounted on the back wall to ensure sufficient cooling
of the modem. In this case 4x M4 screws are used for mounting purposes. There are no centre holes
in the P version for attachment to a DIN rail.
Labelling Radio Modems
is described in next table.
The P version (25 W power) is only available for the 160 MHz band.
19© RACOM s.r.o. – Narrowband modems – PROFIMD400, MD300, MD160
Dimensional Diagram and Labeling Modems

DIGITAL AND ANALOG CHANNELS:
MR425.0M24C-N-485I-232-E-D22A22
Analog I/O
Line type:
optically separated:
RS422/485
unused position
RS232
RS232
232
Ethernet present E
unused position N
N
485I
232I
232 232
N
485I
232I
N
MORSE components production code
radiomodems profi narrowband
RADIO CHANNEL AND CASE VERSION:
SETTING OF MODULE POSITION:
- 2
- S
Short, for DIN rail only, obsolete
4×M4 screws or 2× DIN rail clips
- P
RF power 25W
- 1
12.5 kHz
- M
MORSE
PROFI
(from bottom edge of case)
- N
SCC not used
Channel bandwidth 25.0 kHz
- S
- C
SCC with screw terminals
SCC with Cannon DSUB9
Analog input and output 0 - 20 mA - A
number of Digital inputs
number of Digital outputs
neither Dig nor An I/O are used - N
Digital I/O used - D
An input 0 - 1240 mV, An output 0 - 20 mA - V
Analog I/O not used - empty
SCC1SCC0
+
Digital I/O
SCC3
ETH0
SCC2
number of Analog outputs
number of Analog inputs
MR300
MR400
MR160
For equipment series:
Full-duplex radio
Half-duplex radio
- D
- R
Base Tx frequency, MHz
Comment - radiomodem is the DCE equipment - both data output RS232 pin and LED are labeled RxD.
SCC3 - RS232,
SCC2 - RS232,
MR: 428.2 = base freq. 428.2 MHz, both Tx and Rx
= MORSE half-duplex radio modem, base frequency 428,000 MHz, bandwidth 25 kHz, freq.step 12,5 kHz,
casing with flanges for screws and/or DIN rail clips, SCC with Cannon connectors,
SCC2 - RS232,
SCC3 - RS232,
Ethernet,
Digital input 2×, Digital output 2×, An input 20mA 2×, An output 20mA 2×
= MORSE half-duplex radio modem, base frequency 425,0 MHz, bandwidth 12,5 kHz, freq.step 12,5 kHz,
, SCC connectors with screw terminals,casing with flanges for screws and/or DIN rail clips
SCC1 - RS485, optically separated,
MR428.0M24C-N-N-232-E-D22A22
MR425.0M14S-N-485I-232-E-N
Ethernet
Base frequency labelling options:
Examples:
159.6 / 155.0 = base freq. Tx = 159.6 MHz, Rx = 155.0 MHz
MD: 155.0 / 159.6 = base freq. Tx = 155.0 MHz, Rx = 159.6 MHz
CASING
N
07 2014
6.25 kHz – 2
10.0 kHz – 3
12.5 kHz – 4
Frequency step
before 12/2008 after 12/2008
Typical example of bandwidth/freq. step:
MR425.0M1C-... MR425.0M14C-...
MR425.0M2C-... MR425.0M24C-...
The standard freq. step is 12.5 kHz,
exceptionally 6.25 kHz or 10 kHz.
orange yellow
orange green
red green
LED colours tell
the interface type
LED – RxD TxD
MD160
Narrowband modems – PROFIMD400, MD300, MD160 – © RACOM s.r.o.20
Dimensional Diagram and Labeling Modems