Calian SatService sat-nms User manual

sat-nms RMC
Radiometer Controller
User Manual
Version 1.7 / 2011-02-20
© Copyright
SatService Gesellschaft für Kommunikatiosnsysteme mbH
Hardstrasse 9
D-78256 Steisslingen
www.satnms.com
www.satservicegmbh.de
Tel +49 7738 99791-10
Fax +49 7738 99791-99

Table Of Contents
1Table Of Contents .................................................................................................................................
41 Introduction ........................................................................................................................................
42 Installation .........................................................................................................................................
52.1 Safety Instructions ........................................................................................................................
62.2 Setting the IP Address ..................................................................................................................
72.3 Connecting the RMC ....................................................................................................................
72.3.1 Connector Layout ...................................................................................................................
82.3.2 RMC Pin Descriptions ............................................................................................................
172.3.3 Power Supply Cabling ...........................................................................................................
172.3.4 Mechanical Installation .........................................................................................................
172.4 Connecting the RMD ..................................................................................................................
172.4.1 Connector Layout .................................................................................................................
182.4.2 RMD Pin Descriptions ..........................................................................................................
192.4.3 Power Supply .......................................................................................................................
192.4.4 Mechanical Installation .........................................................................................................
192.5 Format Compact Flash Card ........................................................................................................
213 Operation .........................................................................................................................................
213.1 The Web-based User Interface ...................................................................................................
213.2 Displayed Readings ....................................................................................................................
223.3 Operational Parameters ..............................................................................................................
243.4 Presets .......................................................................................................................................
243.5 Calibration .................................................................................................................................
263.5.1 Tip Curve Calibration ..............................................................................................................
273.5.2 Cold-Load Calibration ..............................................................................................................
273.6 Installation Parameters ...............................................................................................................
314 Remote Control ................................................................................................................................
314.1 General command syntax ............................................................................................................
314.2 The TCP/IP remote control interface ...........................................................................................
324.3 The RS232 remote control interface ............................................................................................
324.4 Parameter list .............................................................................................................................
374.5 FTP Download ...........................................................................................................................
374.6 FTPUpdate .................................................................................................................................
374.6 Rescom Interface Protocol Emulation ..........................................................................................
405 Theory of Operation .........................................................................................................................
415.1 Radiometer Concept ...................................................................................................................
425.2 Radiometer Calibration ...............................................................................................................
425.2.1 Cold-load Calibration ............................................................................................................
435.2.2 Tip-Curve calibration ............................................................................................................
435.3 Antenna Control Unit ..................................................................................................................
435.3.1 Position sensor types .............................................................................................................
445.3.2 Angle calibration ..................................................................................................................
445.3.3 Pointing/Motor Control ..........................................................................................................
466 Specifications ...................................................................................................................................
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466.1 sat-nms RMC .............................................................................................................................
466.2 sat-nms RMD .............................................................................................................................
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1 Introduction
T he sat-nms Radiometer Controller (RMC) is a controller for radiometers. It is not only for use as core
module for new radiometers in any frequency band, but also to upgrade existing radiometers. It was
developed by SatService GmbH including a highly linear sat-nms Radiometer Detector (RMD) for the
detection of the noise signal in any IF band between 50 and 2000MHz.
The chosen radiometer concept provides high stability and measuring accuracy and easy and flexible
operation due to operator friendly user interface.
The radiometer type implemented is noise balancing / noise injection. In addition to that the software
includes all other additional functions necessary for a radiometer, for example control functionality for
azimuth and elevation of the radiometer antenna. This allows automatic tip curve calibration and automatic
calibration with a cold-load via sat-nms RMC. Also the complete high precision temperature control of the
feed box, including the microwave and IF receiving system, is performed via the radiometer controller.
Like any equipment belonging to the sat-nms family, the radiometer controller provides an Ethernet TCP/IP
interface. All measurement results and the monitoring parameters are available via HTTP Web Interface and
can be monitored and controlled from remote IOT software either via HTTP get functions or via RS232
interface. The controller includes a compact flash card of 2GB for data logging purposes and allows
download of data via FTP.
This document is the user manual provided with the sat-nm s RMC. It contains all necessary information
how to install, setup and operate the radiometer. The user manual is available as a printed document and for
on-line reading on the radiometer itself as well.
This document is the user manual provided with the sat-nm s RMC. It contains all necessary information
how to install, setup and operate the radiometer. The user manual is available as a printed document and for
on-line reading on the radiometer itself as well.
Version 1.7 / 2011-02-20
The paragraphs below give a short overview to the contents of the documentation. A subset of this
documentation is stored on the device itself, the complete documentation is available on the sat-nm s
documentation CD and at www.satnms.com.
Installation: The installation description is available at the printed version of the manual only. This is
due to memory restrictions of the radiometer. Look at http://www.satnms.com/doc/html/radiometer/ for
a full version of this manual.
Operation: The sat-nms RMC is operated using a standard web browser like the Internet-Explorer on
MS Windows based computers. The user interface design is straight forward and clearly structured.
Operating the sat-nm s RMC is mostly self-explanatory. Nevertheless, the 'Operation' chapter outlines
the map of web pages which make up the sat-nms RMC user interface and elaborately describes the
meaning of each alterable parameter.
Remote Control: The radiometer provides a versatile remote control interface. A monitoring & control
software may fully operate the radiometer either through a TCP/IP network connection or through the
RS232 interface of the radiometer. This chapter describes the communication protocol used for remote
control and lists all parameters accessible through the remote interface.
Theory of Operation : For a detailed description please refer to the sat-nms documentation CD or
www.satnms.com/doc
Specifications: For a detailed description please refer to the sat-nm s documentation CD or
www.satnms.com/doc
Support and Assistance
If you need any assistance regarding our radiometer, don't hesitate to contact us. We would be pleased to
help you by answering your questions.
SatService GmbH
Hardstrasse 9
78256 Steisslingen
- Germany -
phone +49 7738 99791-10
fax +49 7738 99791-99
www.satnms.com
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2 Installation
This chapter describes how to install the sat-nms Radiometer Controller (RMC). You find a guide how to
connect, configure and mechanically mount the RMC below.
Before you start, please first read the Safety Instructions chapter below. It contains some important
recommendations to prevent damage from the RMC.
Then, we strongly recommend to do a first setup of the RMC on a lab desk before installing it at it's final
location. This is mainly for the following reason:
To setup the RMC IP parameters, the PC used for configuring and the RMC must either be connected to
the same Ethernet hub or must be connected directly with a crossover cable. The initialization program does
not work through routers or intelligent network switches.
Hence, the typical sequence of tasks when putting a sat-nms RMC outdoor module into operation is as
follows:
1. Read the chapter Safety Instructions.
2. Set the RMC IP address.
3. Mechanical mount the RMC.
4. Connect the RMC at its destination environment. Finally connect the power supply and the Ethernet
network.
2.1 Safety Instructions
Failure to observe all Warnings and Cautions may result in personnel injury and/or equipment damage not
covered by the warranty.
Follow standard Electrostatic Discharge (ESD) procedures when handling an sat-nms RMC.
Select and apply the appropriate 24V D/C voltage according to the data sheet before connecting power.
Before connecting the sat-nms RMC to other devices, ensure that these devices can handle the voltage
provided by sat-nms RMC.
The sat-nm s RMC can be damaged if the input voltage is higher than the specified maximum value.
Don’t connect a heater without the corresponding Temperature-Sensor. If you don’t connect a
Temperature-Sensor, the Temperature regulation in the sat-nms RMC is going to switch on the heater
permanently until the regarding temperature-switch turn off the heater.
Move an antenna only with connected end switches.
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In case of a failure do not open the sat-nms RMC enclosure, you will lose warranty. Call SatService
GmbH for an RMA number.
Observe normal safety precautions when operating, servicing, and troubleshooting this equipment.
Take standard safety precautions with hand and/or power tools.
2.2 Setting the IP Address
Before you can operate the RMC, you need to set the RMC’s IP address. There is a special configuration
program on the documentation CD shipping with the RMC for this purpose. We recommend configuring the
RMC TCP/IP settings before you install the RMC at its final place. To configure the RMC, the following
equipment is required:
The sat-nm s RMC outdoor module itself.
A 24V D/C power supply.
A Computer running a Microsoft Windows operating system equipped with CD-ROM drive and
Ethernet network card.
A CAT5 crossover network cable or a Ethernet hub and standard network cables to connect the RMC
and the computer.
The CD-ROM shipping with the sat-nm s RMC.
Setting the RMC IP parameters now is easily done within a few minutes.
1. First install a network cable between the RMC and your computer. If you have a crossover cable
available, this is very easy: simply put the cable into the network connectors of computer and RMC.
Without a crossover cable, you need to connect both, the computer and the RMC to the same network
hub using two standard network cables. It is essential, that the computer and the RMC are connected
to the same network segment, the configuration program is not able to find the RMC through routers
or network switches.
2. Now power on your computer and connect the RMC to the 24V D/C supply.
3. Insert the CD-ROM into the computer's drive and inspect its contents through the 'My Computer' icon
on your desktop. Double-click to the 'ChipTool.exe' program in the 'ChipTool' directory.
4. When the ChipTool program is running, type CTRL+F to make the program search the RMC. The
program shows a list containing at least one entry describing the actual network parameters of the
RMC.
5. The serial number shown in the first column of the list, must match the serial number printed on the
RMC enclosure. If the list stays empty, the RMC is not connected properly. If there are more entries in
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the list, the configuration program has found other devices in this network segment which use the same
technology.
6. Now type CTRL+I to open the IP configuration window of the program. In this form enter the RMC
serial number, it's new IP address and network mask. If the RMC later shall be operated through a
router, enter the address of the router on the gateway field, otherwise leave this field blanc. Be sure,
that the 'DHCP' mark is unchecked. Finally click to the 'Yes' button to set the new parameters at the
RMC.
Now the IP configuration of the RMC is completed. You may finally want to test if the RMC is reachable
now. Start your web browser and type the RMC IP address into the URL field of the browser. The RMC
should reply with its main page, provided that the RMC and your computer are configured for the same
subnet.
2.3 Connecting the RMC
The sat-nms RMC provides a lot of input/output signals. They all are described in the following chapters.
Some applications do not require all ports of the RMC to be cabled.
When connecting and configuring antenna control unit (position sensors and motor drivers), the following
sequence of items is recommended:
1. Connect the position sensor, but not the motor driver.
2. Configure the RMC for the correct type of position sensor.
3. Move the antenna a small amount in both directions (you need to command the motor driver directly,
e.g. using bridge circuits), verify that the angle changes in the right direction.
4. Enter a calibration offset which lets the RMC show an angle which matches the (roughly) estimated
position of the antenna.
5. Now connect the motor driver to the RMC.
6. At the 'Test' page, activate the motor driver outputs for a short time; verify that the antenna moves as
expected.
2.3.1 Connector Layout
Below the connector layout of the sat-nms RMC is shown. Except the network connector which is a
standard 10-Base-T Ethernet socket, all connectors are Phoenix Contact Combicon plugs / clamps. Pin 1 of
each connector is the right-most if you look at the screws of the connector.
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2.3.2 RMC Pin Descriptions
CON1 I2C/Key Interrupt
CON1 is the connector to the on-board I2C-Bus and a Key Interrupt input. This port is to connect an
external Handheld. Actually this connector is not used and cabling is not required.
pin signal description type
1 +5V Power supply OUT
2 GND Power supply
3 Key Interrupt TTL-level IN
4 SCL I2C-bus I/O
5 SDA I2C-bus I/O
6 GND Signal ground
CON2 Temperature Monitor
CON2 provides four inputs for NTC-Temperature-Sensors. Connect only the temperature-sensor which
belongs to the described measurement point. This is necessary for a correct function of the RMC. If you
don’t need a measurement point, leave it open. But be careful, if you select two or three RX-Channels in
the software, you have to connect at least the temperature-sensor for the RX 2 reference load because of the
RMC temperature control.
pin signal description type
1 TEMP 17 out RX 2 reference load OUT
2 TEMP 17 in IN
3 TEMP 18 out RX 2 noise source OUT
4 TEMP 18 in IN
5 TEMP 19 out RX 2 peltier-block OUT
6 TEMP 19 in IN
7 TEMP 20 out RX 2 cold-load OUT
8 TEMP 20 in IN
CON3 Temperature Monitor
CON3 provides four inputs for NTC-Temperature-Sensors. Connect only the temperature-sensor which
belongs to the described measurement point. This is necessary for a correct function of the RMC. If you
don’t need a measurement point, leave it open. But be careful, if you use a reflector heater. Here you have
to connect at least the reflector heater box temperature-sensor because of the RMC temperature control.
pin signal description type
1 TEMP 9 out RX 2 reference load OUT
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2 TEMP 9 in IN
3 TEMP 10 out RX 2 noise source OUT
4 TEMP 10 in IN
5 TEMP 11 out RX 2 peltier-block OUT
6 TEMP 11 in IN
7 TEMP 12 out RX 2 cold-load OUT
8 TEMP 12 in in IN
CON4 Temperature Monitor
CON4 provides four inputs for NTC-Temperature-Sensors. Connect only the temperature-sensor which
belongs to the described measurement point. This is necessary for a correct function of the RMC. If you
don’t need a measurement point, leave it open. But be careful, you have to connect at least the temperature-
sensor for the RX 1 reference load because of the RMC temperature control.
pin signal description type
1 TEMP 1 out RX 1 reference load OUT
2 TEMP 1 in IN
3 TEMP 2 out RX 1 noise source OUT
4 TEMP 2 in IN
5 TEMP 3 out RX 1 peltier-block OUT
6 TEMP 3 in IN
7 TEMP 4 out RX 1 cold-load OUT
8 TEMP 4 in IN
CON7 Temperature Monitor
CON7 provides four inputs for NTC-Temperature-Sensors. Connect only the temperature-sensor which
belongs to the described measurement point. This is necessary for a correct function of the RMC. If you
don’t need a measurement point, leave it open.
pin signal description type
1 TEMP 21 out RX 2 waveguide to cold-load OUT
2 TEMP 21 in IN
3 TEMP 22 out RX 2 test-port to cold-load OUT
4 TEMP 22 in IN
5 TEMP 23 out RX 2 waveguide-switch and coupler OUT
6 TEMP 23 in IN
7 TEMP 24 out RX 1 cold-load OUT
8 TEMP 24 in IN
CON8 Temperature Monitor
CON8 provides four inputs for NTC-Temperature-Sensors. Connect only the temperature-sensor which
belongs to the described measurement point. This is necessary for a correct function of the RMC. If you
don’t need a measurement point, leave it open. But be careful, if you have connected a heater for feed-horn
or for reflector, connect these temperature-sensors because of the RMC temperature control.
pin signal description type
1 TEMP 13 out Feed-horn OUT
2 TEMP 13 in IN
3 TEMP 14 out Reflector OUT
4 TEMP 14 in IN
5 TEMP 15 out RX 2 waveguide-switch and coupler OUT
6 TEMP 15 in IN
7 TEMP 16 out OUT
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8 TEMP 16 in IN
CON9 Temperature Monitor
CON9 provides four inputs for NTC-Temperature-Sensors. Connect only the temperature-sensor which
belongs to the described measurement point. This is necessary for a correct function of the RMC. If you
don’t need a measurement point, leave it open.
pin signal description type
1 TEMP 5 out RX 1 waveguide to cold-load OUT
2 TEMP 5 in IN
3 TEMP 6 out RX 1 test-port to cold-load OUT
4 TEMP 6 in IN
5 TEMP 7 out RX 1 waveguide-switch and coupler OUT
6 TEMP 7 in IN
7 TEMP 8 out CPU OUT
8 TEMP 8 in IN
CON5 DC Voltage Monitor
CON 5 provides a DC Voltage Monitor for all necessary voltages a radiometer need. Normally all monitored
voltages are needed to operate a radiometer and every input must not be unconnected.
pin signal description type
1 +24V ext Limits +25V/+21V IN
2 GND +24V ext IN
3 +28V Limits +29V/+25V IN
4 GND +28V IN
5 +12V/+15V Limits +16V/+10V IN
6 GND +12V/+15V IN
7 +24V/+48V Limits +51V/+21V IN
8 GND +24V/+48V IN
9 -12V/-15V Limits -16V/-10V IN
10 GND -12V/-15V IN
11 +5V Limits +5,5V/+4,4V IN
12 GND +5V IN
CON6 Serial Interfaces
The RMC owns one serial interfaces to control the RMC from remote where the TCP/IP remote control is
not usable. This interface may be configured to work as a RS232 or RS485 2-wire mode/RS422 4-wire
mode interface by jumpers inside the RMC.
pin signal description type
1 RS232 TX RS232 for remote control OUT
2 RS232 RX RS232 for remote control IN
3 GND
4 RS485/422 TX+ RS485/RS422 for remote control IN
5 RS485/422 TX- RS485/RS422 for remote control OUT
6 RS485/422 RX+ RS485/RS422 for remote control IN
7 RS485/422 RX- RS485/RS422 for remote control OUT
8 GND IN
The RMC is factory preset to use the RS232 interface. To change the interface configuration, set the
jumpers on the RMC main board above CON6 according to the illustration below:
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Jumper for configuration of serial interface
There is one jumper to select between RS4xx and RS232 interface driver. Put the jumper to position
RS-232 (right) to select the RS232 interface.
The second jumper switches between the RS422 4-wire mode and RS485 2-wire mode. To select
RS485 2-wire mode put the jumper to position RS-485 (right). Use the TX data lines (CON6 Pins 4,
5) in this mode.
Term RX and Term TX activate 100 Ohms termination resistors between the RS422 data lines. The
lines are terminated if the jumper is set.
X1/X2 DC-Voltage input from Radiometer Detector
X1 and X2 are SMA-connectors for the DC-voltage from the Radiometer Detector. There are two
connectors for three RX-channels. Connector X2 is for the channel 1 and connector X1 is for the channel 2
and channel 3. So channel 2 can handle two input signals. The voltage range is between 0V and +5V. Every
input has input high impedance and provides a sample&hold filter to improve measurement results. See also
chapter Theory of Operation for details.
pin signal type
X1 RX channel 2; 0V…+5V input voltage range IN
pin signal type
X2 RX channel 1; 0V…+5V input voltage range IN
CON12 Power Supply
At CON12 the power supply for the RMC itself (pins 1, 2) and fort the external devices must be connected.
For operation two different power supplies are needed, one for the RMC itself and one for the external
devices like the waveguide-switches or the antenna motor control. Also see chapter Power Supply Cabling
for the concept of separate intern / extern power supplies the RMC uses.
pin signal description type
1 +24V
RMC
Power supply for the RMC and the position encoders IN
2 GND
RMC
IN
3 +24V
EXT
Power supply for waveguide-switches, antenna motor control, end switches, heater
and blower control and temperature control
IN
4 GND
EXT
IN
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CON19 Redundant Power Supply
CON19 is to connect a redundant power supply for the RMC and for the external devices. For a redundant
power supply system you have to connect four power supplies.
pin signal description type
1 Red.
+24V
RMC
Redundant power supply for the RMC and the position encoders IN
2 Red.
GND
RMC
IN
3 Red.
+24V
EXT
Redundant power supply for waveguide-switches, antenna motor control, end
switches, heater and blower control and temperature control
IN
4 Red.
GND
EXT
IN
CON20 Power Output
CON20 provides two clamps to the +24V external voltage rail and two clamps to the GND external voltage
rail. This is for a easier external cabling.
pin signal description type
1 +24V EXT Power Output +24V IN
2 +24V EXT IN
3 GND EXT Power Output GND IN
4 GND EXT IN
CON13 SSI Elevation Angle Encoder Interface
Below the pin out of a SSI type angle encoder interface board is shown. The RMC uses this modern high
speed serial interface to readout the angle of Elevation (if present). The SSI angle encoder may be powered
from the RMC internal power supply. +5V and +24V clamps are provided at the connector. To avoid
ground loops, the cable shield should be connected either to pin 1 at the RMC or to the ground at the
encoder housing, never at both ends.
pin signal description type
1 GND OUT
2 SSI-Data+ SSI data+ IN+
3 SSI-Data- SSI data- IN-
4 SSI CLK+ SSI clock+ IN+
5 SSI CLK- SSI clock- OUT-
6
7 +5V encoder power supply OUT
8 +24V encoder power supply IN
CON21 SSI Azimuth Angle Encoder Interface
Below the pin out of a SSI type angle encoder interface board is shown. The RMC uses this modern high
speed serial interface to readout the angle of Azimuth and (if present). The SSI angle encoder may be
powered from the RMC internal power supply. +5V and +24V clamps are provided at the connector. To
avoid ground loops, the cable shield should be connected either to pin 1 at the RMC or to the ground at the
encoder housing, never at both ends.
pin signal description type
1 GND OUT
2 SSI-Data+ SSI data+ IN+
3 SSI-Data- SSI data- IN-
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4 SSI CLK+ SSI clock+ IN+
5 SSI CLK- SSI clock- OUT-
6
7 +5V encoder power supply OUT
8 +24V encoder power supply IN
CON14 Elevation Motor Controls
All signals for motor control are provided as free floating optocoupler inputs / outputs. This gives a
maximum of flexibility to adapt the cabling to the motor driver units. They probably will combine one end of
the control inputs to a common potential. The RMC is capable to control motor drivers with different
polarity concepts.
Example for wiring the motor
drive signals
Example for wiring the motor
status signals
pin signal description type
1 EL FWD C Motor forward OUT+
2 EL FWD C OUT-
3 EL REV C Motor rewind OUT+
4 EL REV E OUT-
5 EL RESERVE C Reserve OUT+
6 EL RESERVE E OUT-
7 EL FAULT A Fault IN+
8 EL FAULT K IN-
CON22 Azimuth Motor Controls
All signals for motor control are provided as free floating optocoupler inputs / outputs. This gives a
maximum of flexibility to adapt the cabling to the motor driver units. They probably will combine one end of
the control inputs to a common potential. The RMC is capable to control motor drivers with different
polarity concepts.
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Example for wiring the motor
drive signals
Example for wiring the motor
status signals
pin signal description type
1 AZ FWD C Motor forward OUT+
2 AZ FWD C OUT-
3 AZ REV C Motor rewind OUT+
4 AZ REV E OUT-
5 AZ RESERVE C Reserve OUT+
6 AZ RESERVE E OUT-
7 AZ FAULT A Fault IN+
8 AZ FAULT K IN-
CON15 Waveguide-switch RX2
At CON15 the RMC provides a connection for a waveguide switch related to RX 2.
pin signal description type
1 IND B Indication Pos B IN
2 COM IND IN
3 IND A Indication Pos A IN
4 POS B Position B OUT
5 COM POS OUT
6 POS A Position A OUT
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Example for wiring
a waveguide switch
CON23 Waveguide-switch RX1
At CON15 the RMC provides a connection for a waveguide switch related to RX 1.
pin signal description type
1 POS A Position A OUT
2 COM POS OUT
3 POS B Position B OUT
4 IND A Indication Pos A IN
5 COM POS IN
6 IND B Indication Pos B IN
Example for
wiring a
waveguide
switch
CON16 Blower and Heater
CON16 provide some outputs to control blowers and heaters in a radiometer. All signals are free floating
optocoupler outputs for DC. This gives a maximum of flexibility to adapt the cabling to different blowers
and heaters. For a connection with external devices please also take a look also to Elevation Motor Wiring.
pin signal description type
1 BLW CASE E OUT
2 BLW CASE C Blower for the radiometer case OUT
3 BLW HORN E OUT
4 BLW HORN C Blower for the horn antenna OUT
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5 BLW REFL E OUT
6 BLW REFL C Blower for reflector OUT
7 HEAT REFL E OUT
8 HEAT REFL C Heater for reflector OUT
9 HEAT HORN E OUT
10 HEAT HORN C Heater for horn antenna OUT
CON17 RX-Control
CON17 provide some outputs to control the components in a radiometer receiver (circulator, noise-diode,
LO). The output voltage is TTL-compatible (0/5V). There are two equal sets of output signals.
pin signal description type
1 GND OUT
2 ND RX2 Noise-diode control receiver 2 OUT
3 LO- RX2 Local oscillator control receiver 2 OUT
4 LO+ RX2 Local oscillator control receiver 2 OUT
5 CIRC- RX2 Circulator control receiver 2 OUT
6 CIRC+ RX2 Circulator control receiver 2 OUT
7 +5V Supply Voltage OUT
8 ND RX1 Noise-diode control receiver 1 OUT
9 LO- RX1 Local oscillator control receiver 1 OUT
10 LO+ RX1 Local oscillator control receiver 1 OUT
11 CIRC- RX1 Circulator control receiver 1 OUT
12 CIRC+ RX1 Circulator control receiver 1 OUT
13 GND OUT
14 ND VOLTAGE Voltage input for the two noise-diodes OUT
Pin 14 is an input for the noise-diode voltage. If you use a noise-diode with +28V you have to connect an
external voltage here. If you use a noise-diode with +5V you can connect pin 14 to pin 7. However, for a
correct function of the noise-diode control signal you have to connect a voltage.
CON24 End Switches
CON24 provides the end switches for the antenna control unit. The end switch inputs internally are
connected to the external 24V / GND rails. The switches are connected directly to the input pairs without
any external ground or supply cabling. The RMC treats closed contact as OK; contacts have to be opened to
indicate the 'limit reached' condition.
There is also the feedback input for manual control with a handheld. The RMC treats closed contact as
handheld connected.
Example for wiring the limit switches and the handheld
pin signal description type
1 EL LOW Lower limit Elevation IN
2 GND EXT IN
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3 EL HIGH Upper limit Elevation IN
4 GND EXT IN
5 AZ LOW Azimuth left limit (view from behind antenna) IN
6 GND EXT IN
7 AZ HIGH Azimuth right limit (view from behind antenna) IN
8 GND EXT IN
9 MNL CTRL Manual Control feedback IN
10 GND EXT IN
CON25 Pressure Pump
CON25 provides a input and a output to connect a pressure pump. All signals are free floating optocoupler
outputs for DC. This gives a maximum of flexibility to adapt the cabling to different pressure pumps.
Actually you can switch on the pump and read out a fault.
pin signal description type
1 PUMP E OUT
2 PUMP C Switch on Pressure Pump OUT
3 FAULT A Fault feedback IN
4 FAULT K IN
CON26 Temp.-Control
CON26 provides outputs to control the temperature in the receiver case. All signals are free floating
optocoupler outputs for DC. This gives a maximum of flexibility. For a connection with external devices
please also take a look also to Elevation Motor Wiring.
pin signal description type
1 COOL E OUT
2 COOL C Cool Signal OUT
3 HEAT E OUT
4 HEAT C Heat Signal OUT
5 FAULT A Fault Feedback IN
6 FAULT K IN
2.3.3 Power Supply Cabling
The RMC uses optocoupler interfaces to the motor drivers, end switches, waveguide-switches, blowers and
heaters, pressure pump and to the temperature control. This permits to use a complete separate power
supply with a separate ground for these circuits (+24V EXT, GND EXT).
To simplify the cabling of these circuits, the RMC distributes the external 24V and GND lines through a
separate clamp (CON20).
2.3.4 Mechanical Installation
The sat-nm s RMC enclosure is DIN rail mountable. Hence simply snap the sat-nms RMC on to the rail to
fix it. For plain wall mount, fix a 100 mm piece of DIN rail at the wall with at least two screws and lock the
sat-nms RMC on this.
When planning the mechanical installation of the sat-nms RMC, please consider that cables to the sat-nms
RMC have to be fixed o the upper and the underside. So you need some space and something to fix the
cables.
2.4 Connecting the RMD
The sat-nm s RMD is a separate device. It can be mounted at different positions than the RMC. The RMD
provides two detector channels. The connectors are described in the following chapters.
2.4.1 Connector Layout
(C) 2020, SatService GmbH www.satnms.com RMC-UM-2002 Page 17/47

Below the connector layout of the sat-nms RMD is shown. For the IF inputs, external filters and for the dc
outputs are all connectors SMA. This provides a maximum resistance against interferer. The detector is
shown from top view. In this position you can read the label correct.
RMD
Connector
Layout
2.4.2 RMD Pin Descriptions
X4 IF Input Channel 1
X4 is the input connector for the IF Channel 1.
pin description type
X4 IF input channel 1; DC blocked ; 50Ohm SMA connector IN
X3, X2 External Filter Channel 1
X3 and X2 are connectors for an external filter. There is a 70MHz IF filter on-board. If you don’t use this
frequency, you can connect an external filter. But be careful, you have to change the signal way on the
PCB. There are two capacitors, which have to solder in direction of the SMA connectors. The detector is
designed broadband. You can use it from 50MHz to 2000MHz.
pin description type
X3 External filter output; 50Ohm SMA female connector OUT
X2 External filter input; 50Ohm SMA female connector IN
X1 Test-port Channel 1
X1 is a test-port output for channel 1.
pin description type
X1 IF input channel 1; DC blocked; 50Ohm SMA female connector OUT
X5 DC-Output Channel 1
X5 is the output port for the rectified IF signal.
pin description type
X5 DC output; 0…5V; SMA female connector OUT
X10 IF Input Channel 2
(C) 2020, SatService GmbH www.satnms.com RMC-UM-2002 Page 18/47

X10 is the input connector for the IF Channel 2.
pin description type
X10 IF input channel 2; DC blocked ; 50Ohm SMA female connector OUT
X9, X8 External Filter Channel 2
X9 and X8 are connectors for an external filter. There is a 70MHz IF filter on-board. If you don’t use this
frequency, you can connect an external filter. But be careful, you have to change the signal way on the
PCB. There are two capacitors, which have to solder in direction of the SMA connectors. The detector is
designed broadband. You can use it from 50MHz to 2000MHz.
pin description type
X9 External filter output; 50Ohm SMA female connector OUT
X8 External filter input; 50Ohm SMA female connector IN
X1 Test-port Channel 1
X4 is a test-port output for channel 1.
pin description type
X10 IF input channel 1; DC blocked; 50Ohm SMA female connector IN
X6 DC-Output Channel 2
X6 is the output port for the rectified IF signal.
pin description type
X6 DC output; 0…5V; SMA female connector OUT
Power Supply
C53 is a through hole capacitors for the positive power supply. The GND connector is a solder tag near X5.
pin description type
Positive power supply (C53) IN
GND power supply IN
Temperature Sensor
C51 and C54 are through hole capacitors for an internal temperature sensor. This sensor is a NTC resistor
on the PCB.
pin description type
Temperature sensor (C51)
Temperature sensor (C54)
2.4.3 Power Supply
The RMD only need one input voltage between 12V…24V. On-board is a conditioning for all needed
voltages. All SMA connectors, the PCB and the case are at the same ground plane.
2.4.4 Mechanical Installation
The sat-nm s RMD enclosure is DIN rail mountable. Hence simply snap the sat-nms RMD on to the rail to
fix it.
2.5 Format Compact Flash Card
The Radiometer Controller stores on the compact flash card every second the measured sky temperature
from each channel. There are for every day one file. The Software opens this file and writes in it. After one
day the software close this file and open the next file. After approximate 2 years the oldest file will be
overwritten. For this the compact flash card have to be formated with a SatService tool. This tool is
(C) 2020, SatService GmbH www.satnms.com RMC-UM-2002 Page 19/47
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