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sat-nms RMC Radiometer Controller User Manual

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1. There is no echo for characters entered hence this protocol easily may be used for computer based remote control 4 4 Parameter list The table below shows the complete list of M amp C parameters the radiometer knows For each parameter the format and a short description is given ame format at fees O ral o amenace aan mo em a Atmosphere chan jaz mo mm jan amosphekanenchn aas mo nm jap amosphekanenchns kcal fe Calton otie addr ABCDERGNONE Communkatemad ns anys en Az Poitinghyteress tiny NORMALINVERTED AZ Senseimen a os eterna og mode alt e Antenna aade ton i fee amenna ongtude C 2013 SatService GmbH www satnms com RMC UM 1301 Page 32 47 SatService Gesellschaft f r Kommunikationssysteme mbH alp1 H HHH Feed weight factor a ape rete cor apa rete factor amex i AR Upper jamin p AZ Lowertink ayes io ow AR rom sca BAZ Cabton scale asen SENS OPTIONS Az Postion sensore jatar fe ae ba m oecon ba oecon bas mn oecon CINCO E non Casebower dee eta cal p E Cabraonoffet ems ir er Poing hysteresis tiny NORMALINVERTED EL Sense met esmas e peri min fe Lower eves io twee EL Poiming esca E Caro sce esen _ SENS OPTIONS E Postion sensor type ear few EL Tanne mua a ami FM bower rain detection thom OFRAUTO mmibiowermade mwe ec e bower emp hrs im OFRAUTO iN hewermode mme O o eemper ts o UN CT ta j j
2. 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 2013 SatService GmbH www satnms com RMC UM 1301 Page 19 47 SatService Gesellschaft f r Kommunikationssysteme mbH provided on the documentation CD or direct at SatService GmbH The tool formats the compact flash card with simple text files for each day one and filled with zeros The name format of the files is yyyymmdd txt Insight the files the format for every line is 20090814121723 11 7 15 2 19 6 or generally yyyymmddhhmmss channel1 channel2 channel3 You need a PC with installed a Java 6 a compact flash card reader and a compact flash card with 2GB FAT system 1 Open a command window and go to the directory with the java class file 2 Connect the compact flash card reader with the compact flash card Check the device character and if the card is empty 3 Type java RadiometerFormatCF X X is the device character 4 The format program starts and show the status in the command window C 2013 SatService GmbH www satnms com RMC UM 1301 Page 20 47 SatService Gesellschaft f r Kommunikationssysteme mbH 3 Operation The sat nms radiometer is designed to be controlled over a network link using a standard web browser This means in practice that the user interface to the radiomet
3. Displays the atmospheric attenuation calculated from the readings in the line above Attenuation Raw Displays the raw reading sent by the radiometer front end controller This reading is an Reading integer number in the range 0 2048 representing the number of noise diode pulses injected to the antenna signal within one second in order to get the same energy than from the reference load High values stand for a low atmospheric temperature attenuation Antenna This line shows the actual antenna pointing and some state information about the antenna pointing control The following applies to both axes AZ EL e The angle displayed is the actual pointing measured by the angular encoder if C 2013 SatService GmbH www satnms com RMC UM 1301 Page 21 47 SatService Gesellschaft f r Kommunikationssysteme mbH available If there is no motor control installed for this axis the value entered at the settings page is displayed here MOVING is displayed beside the reading if the motor is on HI LIMIT signals that the antenna is at the hi upper right limit LO LIMIT signals that the antenna is at the low left limit MANUAL appears at the rightmost column if the control box for the antenna motors is plugged into the radiometer controller Summary The summary fault indicator shows FAULT if at least one fault flag in the radiometer controller is set Reference This field shows the temperature of the channel 1 reference load and a f
4. e Treo SIN CONS Temperature Monitor CONS9 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 TEMP 5 out RX 1 waveguide to cold load l 6 8 mws O Temwen IN mewn IN Teron IN CONS 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 i Limits 25V 21V O IN Eee me aer 12V 15V Limits 16V 10V GND 12V 15V IN 2 Jo IA CONG 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 elo o 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 C 2013 SatService GmbH www satnms com RMC UM 1301 Page 10 47 SatService Gesellschaft f r Kommunikationssysteme mbH Jumper for configuration of serial interface Radio e There is one jumper to select between RS4xx and RS232 interface driver Put the
5. you will lose warranty Call SatService GmbH for an RMA number e Observe normal safety precautions when operating servicing and troubleshooting this equipment e 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 e The sat nms RMC outdoor module itself e A24V D C power supply e A Computer running a Microsoft Windows operating system equipped with CD ROM drive and Ethernet network card e ACAT5 crossover network cable or a Ethernet hub and standard network cables to connect the RMC and the computer e The CD ROM shipping with the sat nms 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 t
6. 3 Antenna Configuration The antenna installation parameters are defined in this section Each parameter appear twice for azimuth and elevation respectively Parameter Description Name Position With this parameter you set the type of position sensor the radiometer shall read for this axis C 2013 SatService GmbH www satnms com RMC UM 1301 Page 28 47 SatService Gesellschaft f r Kommunikationssysteme mbH vw vn a sensor Known sensor types are type SSI 13B 13 bit binary SSI 13G 13 bit gray code SSI 17B 17 bit binary SSI 17G 17 bit gray code NONE Setting the sensor type to NONE disables any motor control for this axis With this parameter you easily can reverse the sense of a position sensor The sense should be as follows e Azimuth The antenna looks more to the west for larger values e Elevation Larger values mean higher elevation Calibration The calibration offset is added to the position reading before the angle value is displayed offset Calibration Normally the radiometer assumes that the full range of a position sensor corresponds 360 scale If you are using a multi turn position sensor or if the position sensor is mounted to the shaft of a gear rather than to the antenna axis directly the position sensor reading must be scaled The displayed angle is computed as follows displayed value raw reading scale offset Mathematically a scale value of 1 0 disables the sca
7. 5 9 The horn antenna is also afflicted with losses This influence is corrected with equation 5 10 a is a weight factor for the influence of the added noise T a Tem 1 4 Toms 5 10 The horn antenna pickup some noise power because of the spillover This influence is corrected with equation 5 11 G 0 Ias 5 11 Pil x 1 G Also the reflector is afflicted with losses This influence is corrected with equation 5 12 T La Te 5 1 Eq 5 12 At low elevation angles the antenna pickup noise from the ground The amount depends on the elevation angle theta Equation 5 13 corrects the influence and calculates the real sky noise Fr T mud i G 5 13 T shy 1 G 0 Finally the atmospheric attenuation can be calculated with equation 5 14 Ta dare gt an 10 id sp 5 2 Radiometer Calibration 5 2 1 Cold load Calibration Noise power from noise diodes fluctuate from diode to diode Also the decouple factor of the coupler fluctuate This deviation is determined during a cold load calibration and the absolute base is set A cold load is a waveguide termination insight an isolated box Liquid nitrogen cools the termination to approximately 80K 193 C This is a stable noise source and the variations in noise power are very small Equation 5 15 shows the calculation of the correction factor b pi Tis The noise power of a cold load T_CL is deposited in a calibration certificate T_
8. 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 phone 49 7738 9700 3 or 4 Hardstrasse 9 fax 49 7738 97005 78256 Steisslingen www satnms com Germany satnms support satservicegmbh de C 2013 SatService GmbH www satnms com RMC UM 1301 Page 4 47 SatService Gesellschaft f r Kommunikationssysteme mbH 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 IERBERZRZERE RMC 003 SN oor mue Ta na MN bes e Ra m ES 13 mm 4 EN ON shoei CON 16 A i l tiiis os fis a AREA T ji EE nm Na Mercante oe ARa bobatatsar IT BT FFT TT 11000 TTT gt ILLHLIT TELLI shut eabt abhann AnonnnhA BARNAS odian ts 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 do
9. 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 2 Tamm IN TeMP2in IN TeMP3in m memean m 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 Twan IN remera IN e mwn O 7 reme 24 ou RX cota jour TO 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 TO IN 5 TEMP 15 out RX 2 wavegue swich and coupler OUT e mesa m TEMP 16 out C 2013 SatService GmbH www satnms com RMC UM 1301 Page 9 47 SatService Gesellschaft f r Kommunikationssysteme mbH
10. 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 soa cis h 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 2 emen m a remen m 6 remen m e emean m 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 TEMP 9 out RX 2 reference load C 2013 SatService GmbH www satnms com RMC UM 1301 Page 8 47 SatService Gesellschaft f r Kommunikationssysteme mbH N TEMP 9 in IN a remen IN on 7 e 7 TEMP 12 out RX 2 cold load OUT
11. You may change the parameter to the desired value and then click to the Submit button to pass the changed value to the radiometer The radiometer automatically returns to the setup page when the parameter has been changed To cancel a parameter modification you already started either use the Back button of you web browser or click to the Setup button on navigation bar Both returns to the setup page without changing the parameter you edited The table below lists the settings provided by this page General Parameter Description Name Note The radiometer s reading page by default shows the title Reading By entering a different text here you can make the radiometer show a customised title Date time By changing this value you can set the internal clock of the radiometer The clock is set as soon you click to the Submit button in the data entry dialogue The most precise method to set the time is to enter a time one or two minutes ahead and click to Submit when this time is reached Remark Even if the radiometer is configured to use NTP to synchronise it s clock it is important to set the time the RTC chip to a reasonable value Synchronising to a NTP server sets the controllers actual time date but never sets the RTC chip When the radiometer starts up it uses the RTC to initialise it s clock This time is used until the first NTP synchronisation is done If the RTC time is too much off time dependent functions like loggi
12. additional information is displayed below or even instead of this table Please refer to the applicable sections of this document 3 3 Operational Parameters The page Settings contains the radiometer s operational parameters Operational parameters are those which are assumed to be changed more frequently than the installation parameters on the Setup page The page displays a table with the parameters actually set Each parameter value is a hyper link to a separate page which lets you change this parameter This parameter change page shows the actual parameter setting either in an entry field or in a drop down box You may change the parameter to the desired value and then click to the Submit button to pass the changed value to the radiometer The radiometer automatically returns to the settings page when the parameter has been changed To cancel a parameter modification you already started either use the Back button of you web browser or click to the Settings button on navigation bar Both returns to the settings page without changing the parameter you edited The table below lists the settings provided by this page Preset Name Parameter Description Name Preset You can name the actual set of parameters up to 40 characters If you store the parameter name set as a preset this name acts as a label for the stored preset in the list Antenna Pointing Parameter Description Name AZ Target The antenna azimuth point
13. automatic control of the feed horn blower OFF switches the blower permanently off In AUTO mode the feed horn blower is ON if at least one of the following conditions is true e The feed horn heater is on e The radiometer detected rainfall see below e The feed temperature is higher than the threshold defined below F H blower If the feed horn temperature raises above this threshold this forces the feed horn blower to temp be switched on provided the F H blower mode is set to AUTO If there is no other threshold condition active which switches the feed horn blower on it will turn off again if the feed horn temperature falls 2K below the threshold F H blower If the atmospheric temperature reading of the first radiometer channel exceeds this limit the rain radiometer assumes rainfall This is indicated at the Reading page and forces the feed horn detection and reflector blowers to be on The rain condition remains true for 3 minutes after the radiometer reading again falls below the limit RFL heater Setting this to AUTO enables the reflector temperature control a simple on off thermostat mode with a hysteresis of 2K OFF switches the reflector heater permanently off RFL min This is the reflector thermostat target temperature The reflector heater switches on if the temperature reflector temperature falls below this value 1K switches off when if the temperature raises to 1K above the target value RFL heater Th
14. for 0V 5V radiometer ADC Temperature regulation for feed Within Software waveguide box integrated Position Encoding SSI digital interface for Azimuth and Elevation Quantisation Error 13bit 0 044 17bit 0 0028 Display Position resolution 0 001 Antenna Control Unit Direction commands and end switches over free floating optocouplers End switches for Azimuth and Elevation 24 NTC Resistors with 30K 25 C Points Voltage Monitor For 24V 28V 12V 15V 48V 24V 12V 15V 5V Data logging Compact Flash Card with 2GB for more than 2 years Motor driver interface for Via optocoupler input and output low and high speed selectable frequency inverter DC servos etc M amp C Interface Specification Ethernet interface for M amp C and user interface 10 Base T Via http GET requests RS232 RS485 422 M amp C Interface Mini Combicon MCV1 Electrical and Mechanical Specification Environmental Conditions Supply Voltage 24V DC 500mA Temperature range Humidity 5 to 50 C up to 90 non condensation DIN rail module 270x165x70mm 1 4kg 6 2 sat nms RMD Technical Specification Input frequency range 50 2000MHz Internal bandpass filter for measurement 70MHz centre 40MHz bandwidth External filter for measurement Any bandwidth in frequency range Connectors IF in DC out external Filters SMA female 500hm C 2013 SatService GmbH www satnms com RMC UM 1301 Page 46 47 SatService Gesellsc
15. 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 nms 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 nms 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 2013 SatService GmbH www satnms com RMC UM 1301 Page 17 47 SatService Gesellschaft f r Kommunikationssysteme mbH 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 RM
16. important is how the direction of movement is wired The proper direction depends on if the antenna is operated on the northern or on the southern hemisphere northern hemisphere southern hemisphere azimuth FWD moves the antenna to the right FWD moves the antenna to the left westward westward elevation FWD moves the antenna up FWD moves the antenna up C 2013 SatService GmbH www satnms com RMC UM 1301 Page 44 47 SatService Gesellschaft f r Kommunikationssysteme mbH a a Look through the antenna to the sky for the correct orientation of the left right clockwise directions The sense of the position sensors must set that the sensors give increasing values while the antenna moves FWD C 2013 SatService GmbH www satnms com RMC UM 1301 Page 45 47 SatService Gesellschaft f r Kommunikationssysteme mbH 6 Specifications 6 1 sat nms RMC Technical Specification bit resolution recommended hysteresis Temperature easurement OK 308K range Radiometer type implemented Noise balancing Noise injection Number of radiometers to be 2 controlled simultaneously Number of frequency selectable 2 in one of the two radiometers Switching rate circulator 256HZ Feed Reflector blower control Within Software RX Control circulator LO TTL Compatible output 0V 5V Noise Diode Control Selectable over an external voltage Input max 36V Maximal output voltage 28V Analog Input Voltage
17. jumper to position RS 232 right to select the RS232 interface e 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 e 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 OV and 5V Every input has input high impedance and provides a sample amp hold filter to improve measurement results See also chapter Theory of Operation for details RX channel 2 0V 5V input voltage range RX channel 1 0V 5V input voltage range 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 1 24V Power supply for the RMC and the position e
18. position value differs from the target value the motor is activated to compensate this difference It makes no difference if a new target value has been commanded or if the antenna has moved a little bit due to a squall Hysteresis To avoid that the motor is switched forth and back all the time the ACU tolerates small differences between measured and target value within a hysteresis value This hysteresis is individually configurable for each axis at the Setup page To ensure that the motor stands still when the target position is reached twice the resolution step size of the position sensor encoder must be set Common values are 0 0052 0 0122 0 0032 0 0062 If the motor control loop still oscillates with the recommended hysteresis values this is due to the off carriage of the antenna drive Either turn down the motor speed at the motor driver unit or enlarge the hysteresis value in this case Motor drive signals The sat nms RMC provides a number of output signals to control a motor driver unit These signals they are available for all two axes are FWD __ This signal switches the motor on for the forward direction This signal switches the motor on for the reverse direction FAULT The RMC monitors this signal all the time The signal is high active i e the RMC expects no current flowing through the optocoupler while teh the drive is OK If the circuit is closed the RMC signals a fault and stops the motor Very
19. satnms com RMC UM 1301 Page 34 47 SatService Gesellschaft f r Kommunikationssysteme mbH tccl r o H HHHH T C result correlation teed mo nm EC ret conen tees mo nm rrCresrcmeiten ety e rc mesane dey sema fe fe r maximum elevation som rc mma vation sen e eeose rev simon tp cume Bo Dr e coi temperature C Tem mk ana fe cronin me Darm man ee veia temperaare maz fe ei remperaare mas ee veia temperature tet ieee adage temp tin fa Ref ad oop actor fpr ee SC Reload op factor oa mo mm ee Temperate sensora 08 fro mm ee Temperature sensor 08 1509 mo mm ec Temperature sensor 09 maps orron __ Waveguide resus est AB wena postion waz AB O wen postion hen mores TiCresuhacopt C 2013 SatService GmbH www satnms com RMC UM 1301 Page 35 47 tct2 NO YES CC E vmn vg o summary fou 6 votage montor felt temperate atret lado fis 9 presentar time synchronisation fault 18 azimuth motor error T C result accept tea mores Tera ta fio um PCen teeosa az mo nm PCen feed ss Lt as ro ps cc feed ss Lt cad e anoa aw e O e sampes o average aa en Ka cannes nominal emp ae p CO came 2 nominal temp as en aaa nominal emp aba mo ete noie conection Luz 0 alate nobe conection 6 awa o Cal noie conection 0 ee omon rosor ps ist nae fons tag motora fend oie monitor el fens tage monitors el ns age mont
20. should be connected either to pin 1 at the RMC or to the ground at the encoder housing never at both ends CA CN ION IN 209 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 1 lo A CTN C 2013 SatService GmbH www satnms com RMC UM 1301 Page 12 47 SatService Gesellschaft f r Kommunikationssysteme mbH SSI CLK SSI clock IN A e 6 izay 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 24 EXT drive signals OND EXT Example for wiring the motor status signals GND EXT 2 mrw om a reve o 6 jzureseREeE Jour e zur IN CON22 Azimuth Motor Controls All s
21. Bl REF A pao ABSORBER LOAD 1 ron HA er P T Tabs N a gnd tm 542 RECEIVER Lren Eh Un La Leo fant de Tren Tabs I Th ET Tug P 1 nil EL l l T 1 Y T T 1 1 05 A A A noise balancing radiometer tries to reach equal noise levels between the reference load and the noise generator noise diode plus the noise level from the antenna For this the noise diode adds noise power to the received power from the antenna The noise diode is pulse width modulated and a defined amount of noise power n Pulses Q Noise quantum can be added Equation 5 1 shows the relation TP 7 Tr gt TY 2 O Tar 5 1 C 2013 SatService GmbH www satnms com RMC UM 1301 Page 41 47 SatService Gesellschaft f r Kommunikationssysteme mbH With this relation in equation 5 5 we can calculate the noise power at the noise injection point b is a calibration factor for the added amount of the noise diode T Tr n Q b 5 5 The receiver system is not ideal matched and a small amount of power is reflected by the antenna For this equation 5 6 subtract the reflected power T Topp A Q 5 aa Toer 5 6 The waveguides in the radiometer receiver are afflicted with ohmic losses and add also some noise power to the received signal This influence is corrected with equation 5 7 5 8 5 9 TP bm TP na a 657 WE 2 T Liga Ta Boga 1 Taga 5 8 Ti L Ti E 173
22. D Pin Descriptions X4 IF Input Channel 1 X4 is the input connector for the IF Channel 1 IF input channel 1 DC blocked 500hm SMA connector 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 External filter output 500hm SMA female connector X2 External filter input 500hm SMA female connector X1 Test port Channel 1 X1 is a test port output for channel 1 IF input channel 1 DC blocked 500hm SMA female connector X5 DC Output Channel 1 X5 is the output port for the rectified IF signal DC output 0 5V SMA female connector X10 IF Input Channel 2 C 2013 SatService GmbH www satnms com RMC UM 1301 Page 18 47 SatService Gesellschaft f r Kommunikationssysteme mbH X10 is the input connector for the IF Channel 2 IF input channel 2 DC blocked 500hm SMA female connector 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 capac
23. H tempera es po je 21 422 GHz Noise Sour temperare vo vo 2 18 213123 8 GHz reference load temperature 17 213123 8 GHz temperature regulator temperature 17 09 Antenna blower temperature C 2013 SatService GmbH www satnms com RMC UM 1301 Page 38 47 SatService Gesellschaft f r Kommunikationssysteme mbH Antenna reflector temperature Customer specific Customer specific Customer specific In a 13 5GHz the Answer is H 50 00 50 00 50 00 50 00 50 00 50 00 50 00 50 00 44 44 HEHH HHH HHA HHA HEHE HEHE HEHE HEHHE HRAF 50 00 50 00 50 00 If no temperature sensor is present the RMC returns the value 50 00 135 GHz temperature simon o Antena blower temperate o Request System Status RS In a 20 30GHz Radiometer the Answer is S 20 00 20 00 6 00 4 44 AHH HHH 0 00 In a 13 5GHz Radiometer the answer is S 20 00 20 00 1 00 9 99 0 00 9 99 0 00 The number of primary and 1 13 5 GHz 6 20 20 30 GHz alternate front end channels Primary channel waveguide 0 00 the input is connected to the antenna 1 00 the input is position 30GHz connected to the Test Port 9 99 13 5 GHz radiometer Alternate channel WG switch 0 0 the input is connected to the antenna 1 00 the input is position 20GHz and 13 5 GHz connected to the Test Port Primary channel IF gain 30 GHz 2 00 normal conditions in the IF channel 9 99 for a 13 5 GHz radiometer A
24. andardised interface The RMC supports types with 13bit and 17bit resolution both gray coded and binary variants The RMC provides 5V and 24V supply voltages 200mA max for the encoders so external power supplies may be omitted in most cases 5 3 2 Angle calibration gt From the user s point of view the RMC accepts and displays pointing angles as floating point numbers with 0 001 resolution Internally the software treats angles as 32 bit integer numbers where the full 32 bit range corresponds to 360 This is equivalent to a resolution of 0 000000084 When the software calculates the pointing angles from the sensor readings it includes some calibration parameters configurable at the Setup page The steps of calculating a pointing angle are as follows Get the raw value Extend left shift the value to 32 bits Reverse the sign if this option is set in the setup If the calibration scale is nonzero convert the value to floating point multiply by the calibration scale and convert the value back to 32 bit integer 5 Add the calibration offset 6 For the azimuth axis add the antenna course too A The integer value calculated this way is used for the internal pointing routines At the user interface and for remote control show the internal value multiplied by 36 2432 5 3 3 Pointing Motor Control The sat nms RMC performs the pointing motor control as a closed control loop independently for each axis If the measured
25. at the DHCP mark is unchecked Finally click to the Yes button to set the new parameters at the RMC gt IPC CHIP Tool File BIOS CHIP Info IPconfigSnr ES Use this form to define the IP configuration of a chip with a known serial number Serial number of CHIP J1 816 Chip IP configuration IP Address 192 168 1 1 Network mask 255 255 255 0 Gateway A 7 Use DHCP 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 posit
26. ation detection 30 seconds is a suitable value in most cases interval Sun pos The radiometer signals a sun outage fault if the calculated sun azimuth and radiometer fault az azimuth differ by less than the value entered here diff Sun pos The radiometer signals a sun outage fault if the calculated sun elevation and radiometer fault el elevation differ by less than the value entered here diff Miscellaneous 3 4 Presets The page Presets gives access to the radiometer s preset memory The radiometer is capable to remember up to 20 sets of operational parameters which can be easily restored Managing these memories is done with the Presets page A preset contains all parameters which are presented at the Settings page The Presets page displays a table with all presets actually stored The preset name set at the time the preset was saved together with the antenna pointing is used a the preset label in the list By clicking the icons in the table settings may be stored recalled or deleted If a memory location has stored a preset the table shows a blue arrow in the Go column of the table Clicking to this arrow recalls the settings stored for that target and moves the antenna to the stored pointing The radiometer displays a confirmation dialog before it actually recalls the preset memory Only if you click to Submit in this dialog the antenna moves to the stored location and the stored parameters are r
27. attenuation follows a secant law as show in the following equation For an easier analysis of the results the elevation angles are linearised with equation 5 21 1 5 21 er The conclusion is a straight as described in equation 5 22 al d e 5 22 A tip curve should only be conducted under clear sky conditions because the atmosphere is reliable homogeneous The antenna moves from zenith theta 90 in direction to the earth theta 0 Every few degrees the atmospheric attenuation is measured In the zenith the attenuation is the smallest because the way through the atmosphere is the shortest A best fit line is calculated from the measuring points The standard deviation and of the points and the intersection with the y axis is also calculated If the radiometer system is calibrated the line intersects the y axis at the OdB point If this is not the reason the loss of the horn has to be corrected with the factor c from equation 5 27 0 5 27 c 10 2 5 3 Antenna Control Unit The sat nms RMC provide a antenna control unit ACU to control a motorised radiometer Movement in azimuth and elevation are possible if present 5 3 1 Position sensor types C 2013 SatService GmbH www satnms com RMC UM 1301 Page 43 47 SatService Gesellschaft f r Kommunikationssysteme mbH The sat nms RMC provides an interface for SSI type digital position encoders These encoders are precise reliable and provide a st
28. ault indicator if Load the temperature does not match it s target within the limits Temperature NTP Time Shows a fault indicator for the last attempt to synchronize the controller s clock to a NTP Sync server Shows n a if the radiometer is not configured to sync it s clock by means of NTP CF Card This indicator reports if the radiometer actually is logging it s readings to compact flash card If NOT LOGGING appears here either logging is disabled at the Settings page or there is a problem with the CF Card Sun Outage This indicator shows FAULT if the antenna actually looks right to the sun within some configurable limits and the readings may be wrong due to this fact Please note that the antenna pointing as well as the geodetic location of the antenna must be known with a sufficient precision in order to use this feature Rain Detect If the atmospheric temperature measured with channel 1 exceeds a configurable threshold the radiometer assumes rainfall and switches the feed horn reflector blowers on RAIN indicates this condition Environment The environment temperature is measured below the outer casing of the radiometer Temperature Reflector The reflector temperature Temperature Time The actual time of the radiometer s clock Beside the time itself the time of the last synchronization to a reference either the radiometer s RTC chip or NTP is shown During a the tip curve or cold load calibration process
29. by a parameter name To set a certain parameter to a new value a message name value has to be sent to the radiometer The radiometer interprets this command checks the range of value sets the internal parameter and then answers name value The value in the reply is the value actually recognised by the beacon radiometer For instance if the requested value was out of range the replied and internally used value is limited to the applicable minimum or maximum To read a parameter from the radiometer instead of a new parameter value a question mark is sent name The radiometer replies the actual value in a complete message name value A complete list of the parameter the radiometer knows is shown later in this document in chapter Parameter list Below some common rules applying to the remote control message syntax are summarised e Parameter names always are of lower case letters most of them are four characters long e Non numeric parameter values always are written in upper case e Numeric floating point values may be specified with an arbitrary precision however the device will reply only a fixed number of places The radiometer recognises a decimal point numbers must not contain any commas e There must not be any whitespace in front or after the in a message e If the command query is not of the form name value or name the radiometer replies the message SYNTAX e If the message syntax is OK but con
30. e Reboot button But be careful when you do a reset the RMC is not available over the Ethernet for a few seconds Read and Write Config Open this tool in the folder where you want to read the config to or write the config from Enter the corresponding IP address and select the device RMC In the window you can see the actual status If you want to read the config from RMC press the Read Config button If you want to write the config press the button Write Config After this you have to do reboot the RMC with the Reboot button Then the settings from the file are loaded You have to do a reboot immediately after a write of config because the settings will be overwritten if you change something over the web interface But be careful when you do a reset the RMC is not available over the Ethernet for a few seconds 4 6 Rescom Interface Protocol Emulation The radiometer controller provides a Rescom Interface Protocol Emulator over TCP IP You can request the Measured Data RM the Housekeep Data RH and the System Status RS The radiometer controller answers to these three commands RM RH and RS with the corresponding Rescom string The default Port is 2101 The RMC accept only one connection at the same time The Rescom Interface Protocol expect a frame termination with a Checksum Character followed by a Carriage Return lt CR gt ASCII 13 The Checksum Character is calculated in the following way e Make the Sum of the value of a
31. e 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 nms documentation CD and at www satnms com e 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 e 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 nms 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 e Remote Control The radiometer provides a versatile remote control interface A monitoring amp 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 e Theory of Operation For a detailed description please refer to the sat nms documentation CD or www satnms com doc e Specifications For a detailed description please refer to the sat nms documentation
32. e antenna down to the next elevation angle C 2013 SatService GmbH www satnms com RMC UM 1301 Page 26 47 SatService Gesellschaft f r Kommunikationssysteme mbH The radiometer always measures calibrates all available channels in parallel When the tip curve calibration has finished the program shows a table with the measurement results instead of the normal readings page The table shows for each channel the following parameters Slope The slope of the linear regression function calculated from the measured points Offset The y axis offset of the linear regression function calculated from the measured points should be zero for a perfect calibrated radiometer Correlation The correlation parameter gives measure of the quality of the linear regression function A value near 1 0 should be reached Old Feed The feed loss used up to now Loss oH Feed The feed loss value calculated from the tip curve YES NO labels are shown for each channel in the last table row Clicking to a label toggles it Accept from YES to NO and vice versa Only the calibration of channels labelled with YES gets updated when the calibration process is finished with OK To quit the measurement without updating any calibration values click to Cancel Clicking to OK accepts the new feed horn loss calibration for those channels where the results are marked with YES The complete measurement results are stored as a file TIPCURVE TXT at the radiometer
33. e number of radiometer readings to be averaged for the calibration average Switch channel Starts a cold load calibration for radiometer channel 1 1 to cold load Switch channel Starts a cold load calibration for radiometer channel 2 3 2 3 to cold load 3 5 1 Tip Curve Calibration The tip curve calibration measures the atmospheric attenuation at different elevation angles While lowering the elevation the atmospheric attenuation rises From this tip curve an absolute offset in the radiometer reading may be calibrated the offset gets applied as feed horn loss if the calibration is accepted by the operator There should be constant clear sky conditions during this test to get reasonable results If the elevation axis is motorised the RMC move the antenna automatically If there is no motorised axis the user have to move the antenna manual The tip curve calibration is started by clicking to Start tip curve calibration at the Calibration page The antenna immediately starts to move the maximum elevation angle set for the tip curve calibration From there the radiometer performs the following steps for each elevation angle to measure If there is no motorisation the user have to move the antenna manually to the elevation angles which the RMC shows in the Web Interface 1 Wait the settling time measurement delay 2 Take the number of samples to average 3 Store the averaged atmospheric attenuation for this elevation angle 4 Move th
34. e reflector heater switches off if the temperature of the heater box itself is above this max limit this protects the heater temperature AUTO selects the automatic control of the reflector blower OFF switches the blower permanently off In AUTO mode the reflector blower is on if at least one of the following conditions is true e The reflector heater is on e The radiometer detected rainfall see above e The reflector temperature is higher than the threshold defined below RFL If the reflector temperature raises above this threshold this forces the reflector blower to be blower switched on provided the RFL blower mode is set to AUTO If there is no other condition temp active which switches the reflector blower on it will turn off again if the reflector threshold temperature falls 2K below the threshold Measurement Parameter Description Name C 2013 SatService GmbH www satnms com RMC UM 1301 Page 23 47 SatService Gesellschaft f r Kommunikationssysteme mbH Averaging The base integration time of the radiometer front end is one second The radiometer is time capable to apply an additional averaging to the readings which is configured here The averaging is a simple FIR filter of the specified length e g 5 seconds averaging time means that the displayed reading is the average of the last five values Sun pos The time interval when the radiometer re calculates the sun coordinates for the sun outage calcul
35. ead For each memory location the table shows a floppy disk icon in the Save column Clicking to this icon saves the actual operational settings to the selected memory location Again there is a confirmation dialog page before the data actually is saved Analogous to the Save icon the table shows an eraser icon in the Delete column The icons only are shown for the memory locations which are in use Clicking to the eraser icon clears the selected memory location after a confirmation inquiry 3 5 Calibration This page defines the calibration constants used by the radiometer to calculate the atmospheric temperature and attenuation from the raw readings received from the radiometer front end It also gives access to the tip curve and cold load calibration verification routines built into the radiometer WARNING Most of the calibration constants are values which are only valid for the particular radiometer hardware the controller is assigned to Only change these values if you really know what you are doing The page displays a table with the parameters actually set Each parameter value is a hyper link to a separate page which lets you change this parameter This parameter change page shows the actual parameter setting either in an entry field or in a drop down box You may change the parameter to the desired value and then click to the Submit button to pass the changed value to the radiometer The radiometer automatically returns
36. er appears in your browser window after you type in the radiometer s IP address in the address field of the browser program Operating the radiometer is mostly self explanatory 3 1 The Web based User Interface After having connected the radiometer to a power supply and set the radiometers IP address you can access the radiometer s user interface To do this start your favorite web browser program Internet Explorer Mozilla Firefox Opera or what else program you prefer At the address field where you normally enter the URL of a web page you want to see type in the IP address of the sat nms radiometer you want to control The radiometer shows a web page consisting of a navigation bar at the left side of the browser window and the actual readings of the radiometer in the main part of the window The readings automatically refresh once a second The navigation bar at the left contains eight buttons which build the radiometer s main menu Reading This button switches back to the radiometers main page you already see when you connect to the radiometer This page displays the actual readings of the radiometer Settings By clicking to this button you switch to the Settings page where you can view and change the common operational settings of the radiometer like frequency or bandwidth Presets By clicking to this button you switch to the Presets page The radiometer is capable to store up to 20 presets of operational parameters Calibra
37. es 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 e Follow standard Electrostatic Discharge ESD procedures when handling an sat nms RMC e Select and apply the appropriate 24V D C voltage according to the data sheet before connecting power e Before connecting the sat nms RMC to other devices ensure that these devices can handle the voltage provided by sat nms RMC e The sat nms RMC can be damaged if the input voltage is higher than the specified maximum value e 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 e Move an antenna only with connected end switches C 2013 SatService GmbH www satnms com RMC UM 1301 Page 5 47 SatService Gesellschaft f r Kommunikationssysteme mbH e In case of a failure do not open the sat nms RMC enclosure
38. eter also provides an RS232 serial port which can be used to control the device remotely Depending on the device address set the radiometer either runs framed protocol with start stop characters and checksum or it provides a dumb terminal interface The RS232 interface always operates at 9600 baud no parity 8 data bits one stop bit If an address A G is selected the radiometer expects each message it receives to be packed into a frame as described below start character always A device address A G l first character of the message body message body last character of the message body end character always The checksum byte is calculated using an algorithm as implemented by the following formula ae eo i e sum 32 5 byte i 32 modulo 95 ven This protocol type is known as MOD95 or Miteq protocol The radiometer also packs it s reply in a protocol frame as described above incomplete frames checksum errors or address mismatches let the radiometer ignore the message The time between the characters of a message must be less than 5 seconds or the radiometer will treat the message as incomplete If the radiometer is set to the device address NONE it uses a simple line protocol instead of the framed protocol described above Messages sent to the radiometer have to be terminated with a carriage return character ASCII 13 the radiometer terminates replies with a CR LF pair ASCII 13 10
39. haft f r Kommunikationssysteme mbH Input noise figure lt 10dB Coupling input to output test port 35dB Input level measurement range 128 118dBm Hz Analog output voltage range OV 5V Electrical and Mechanical Specification Environmental Conditions Supply Voltage 12 24V DC 550mA Temperature range Humidity 5 to 50 C up to 90 non condensation DIN rail module 110x74x30mm 0 2kg C 2013 SatService GmbH www satnms com RMC UM 1301 Page 47 47
40. ignals 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 C 2013 SatService GmbH www satnms com RMC UM 1301 Page 13 47 SatService Gesellschaft f r Kommunikationssysteme mbH Example for wiring the motor 24 EXT drive signals OND EXT Example for wiring the motor status signals Pin 7 CONTA 22 GND EXT 2 awe Our a arve o 6 AZRESERVEE O Jour e azr IN CON15 Waveguide switch RX2 At CON15 the RMC provides a connection for a waveguide switch related to RX 2 2 commo IN 5 combos ovr 6 POSA Postion A our C 2013 SatService GmbH www satnms com RMC UM 1301 Page 14 47 SatService Gesellschaft f r Kommunikationssysteme mbH Example for wiring m he x u u a waveguide switch eS A CON23 Waveguide switch RX1 At CON15 the RMC provides a connection for a waveguide switch related to RX 1 ae 2 compos s compos IN 6 npe indication Pos B IN 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 cabli
41. imit 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 24 EXT CONZS lt Fin I 3 573 CON24 Pin 2 4 6 8 16 E I i I OND EXT ELLOW __ Lower limit Elevation C 2013 SatService GmbH www satnms com RMC UM 1301 Page 16 47 SatService Gesellschaft f r Kommunikationssysteme mbH 3 EL HIGH Upper limit Elevation IN 4 GND EXT I 5 AZ LOW Azimuth left limit view from behind antenna GNDEXT IN Azimuth right limit view from behind antenna CM CC IN 9 MNE CTRL Manual Comes wolo 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 1 pwer Journ a r m 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 1 cook our s mare jour e amr IN 2 3 3 Power Supply Cabling The RMC uses optocoupler interfaces to the motor drivers end switches waveguide switches blowers and
42. ing If the radiometer is equipped with a motorized azimuth value adjustment entering a new value lets the antenna move to the selected pointing Pleased C 2013 SatService GmbH www satnms com RMC UM 1301 Page 22 47 SatService Gesellschaft f r Kommunikationssysteme mbH note that the radiometer takes no readings while the antenna is moving Important Remark Even if the radiometer has no motorized azimuth adjustment you should enter the antenna azimuth direction here as precise as possible The sun outage detection depends on this value The antenna elevation pointing If the radiometer is equipped with a motorized elevation adjustment entering a new value lets the antenna move to the selected pointing Pleased note that the radiometer takes no readings while the antenna is moving Important Remark Even if the radiometer has no motorized elevation adjustment you should enter the antenna elevation direction here as precise as possible The sun outage detection depends on this value as well as the correction of the amount of ground temperature contributing to the reading Antenna Temperature Control Parameter Description Name F H heater Setting this to AUTO enables the heed horn temperature control a simple on off thermostat mode with a hysteresis of 2K OFF switches the feed horn heater permanently off F H target The feed horn thermostat target temperature temperature F H blower AUTO selects the
43. ion 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 C 2013 SatService GmbH www satnms com RMC UM 1301 Page 7 47 SatService Gesellschaft f r Kommunikationssysteme mbH MES CON 2 Temp CON 3 Temp CON 4 Temp CON 5 Voltage Monitor en Monitor Monitor Monitor o 0 5 EELEE I wi v e u 0 oa lla 3 2 1 TENTEI a wE CON 6 rszzmussu2 CONT Tem ICONS Tem CONQ Temp SN reri yi u 2 2 alles u alle 7 amp SatService GmbH 4 aise er an Radiometer Controller a info satservicegmbh de B A WWW satnans com CON 18 CON 12 CON 13 ssielow CON 14 Em Motor CON 15 We u CON 17 RX Conto y 85 5 in Il Bo 3 B 3 y i ate ern iH 85533 1 lana ER 39082 oh oh bE El dassi rocatdas a LINK ev UN HVE VE CF S A B CON 19 CON 20 CON 21 ssrazm CON 22 Azim Moter CON 23 WS CON24 ENDswrcHes CON 25 CON 26 TEMP Fuse 2A FED POWER MET POWER OUT ss SSI a pS B RSS un llos lie E u monty PERE EERE 55343 ILLES A istiss Sebsdatsde IP a PP EP 2 3 2 RMC Pin
44. ise correction factor Instead of the normal reading page the radiometer shows a table presenting the nominal cold load temperature the measured temperature the old noise correction factor and the new one Clicking to Cancel abandons the calibration result leaves the noise correction factor at it s old value Clicking to OK replaces the noise correction factor by the new one In both cases the wave guide switch of the calibrated channel is reset to the antenna Please note the following e With a 3 channel radiometer you may either calibrate channel 1 or the channels 2 amp 3 at a time e When calibrating channel 2 amp 3 average a larger number of samples than with channel 1 This is because channel 2 amp 3 are measured alternately which reduces the effective measurement rate to one measurement every two seconds 3 6 Installation Parameters The page Setup contains the radiometer s installation parameters Installation parameters are those which are assumed to be changed less frequently than the operational parameters on the Settings page C 2013 SatService GmbH www satnms com RMC UM 1301 Page 27 47 SatService Gesellschaft f r Kommunikationssysteme mbH The page displays a table with the parameters actually set Each parameter value is a hyper link to a separate page which lets you change this parameter This parameter change page shows the actual parameter setting either in an entry field or in a drop down box
45. itors which have to solder in direction of the SMA connectors The detector is designed broadband You can use it from 50MHz to 2000MHz X9 External filter output 500hm SMA female connector X8 External filter input 50Ohm SMA female connector X1 Test port Channel 1 X4 is a test port output for channel 1 IF input channel 1 DC blocked 500hm SMA female connector X6 DC Output Channel 2 X6 is the output port for the rectified IF signal DC output 0 5V SMA female connector Power Supply C53 is a through hole capacitors for the positive power supply The GND connector is a solder tag near X5 WE Positive power supply C53 E GND power supply Temperature Sensor C51 and C54 are through hole capacitors for an internal temperature sensor This sensor is a NTC resistor on the PCB WE Temperature sensor C51 MN wi Temperature sensor C54 u 2 4 3 Power Supply The RMD only need one input voltage between 12V 24V On board is a conditioning for all needed voltages AllSMA connectors the PCB and the case are at the same ground plane 2 4 4 Mechanical Installation The sat nms 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
46. jection 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 nms 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 nms 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 giv
47. ling Beside this the radiometer also accepts the special value 0 to disable scaling at all If a new target angle is commanded for a particular axis the radiometer controls the antenna motor until the angle measured with the position sensor matches the target value within this hysteresis The maximum target value accepted at the user interface and via remote control This software limit prevents the radiometer from running the antenna to the limit position under normal conditions The minimum target value accepted at the user interface and via remote control This software limit prevents the radiometer from running the antenna to the limit position under normal conditions Location Parameter Description Name Antenna The geodetic latitude of the antenna For a precise sun outage calculation this value latitude should be entered with 0 001 accuracy Antenna The geodetic longitude of the antenna For a precise sun outage calculation this value longitude should be entered with 0 001 accuracy The absolute altitude over sea of the antenna location altitude Voltage Monitors Parameter Name Description Voltage monitor 1 label These parameters define the labels for the state of the voltage monitors 1 6 A displayed at the test page These depend on the radiometer electronics used with Voltage monitor 1 label the RMC If you enter n a for not applicable as a label this voltage monitor is not shown at the test page A vol
48. ll the characters in the datablock modulo 96 e Add 32 to the value and send the character corresponding to the sum This will be a printable character Example C 2013 SatService GmbH www satnms com RMC UM 1301 Page 37 47 SatService Gesellschaft f r Kommunikationssysteme mbH e RM ASCII 82 ASCII 77 159 Modulo 96 63 32 _ For the three implemented Commands the Checksum Character is the following E R Measured Data M RH Houskeep Data es fe soi Sas It is possible to connect to this port with a simple telnet client To establish a connection the following command is entered at a Command Line telnet 192 168 2 76 2101 You have to enter the correct IP Adress Now you can type one of the three Commands with the Checksum e g RM_ Request Measured Data RM In a 20 30GHz Radiometer the Answer is M HHAH HAHH H AH H HH HHH 99 99 99 99 99 99 999 99 In a 13 5GHz Radiometer the Answer is M 999 99 999 99 99 99 99 99 99 99 99 99 99 99 999 99 Request Housekeeping Data RH In a 20 30GHz Radiometer the Answer is H 50 00 50 00 44 44 HEHH HH HH H 50 00 50 00 FAMA HEHH HEHE HEHH HAHH HEHH HEHH HEHH HH AHH 44 HF 50 00 50 00 50 00 If no temperature sensor is present the RMC returns the value 50 00 20 30GHz Radiometer description RMC Sensor 30 GHz temperature cold load internal sensor 30 GHz temperature cold load external sensor 30 G
49. lternate channel IF gain 20 GHz always 2 00 normal conditions in the IF channel or 13 5 GHz Radiometer front end serial 0 00 C 2013 SatService GmbH www satnms com RMC UM 1301 Page 39 47 SatService Gesellschaft f r Kommunikationssysteme mbH number C 2013 SatService GmbH www satnms com RMC UM 1301 Page 40 47 SatService Gesellschaft f r Kommunikationssysteme mbH 5 Theory of Operation This section gives some background information about how the sat nms RMC works Chapter 5 1 Radiometer Concept describes how the sat nms RMC measures the atmospheric attenuation and how the measurement concept works Chapter 5 2 Radiometer Calibration describes the calibration of a radiometer with the sat nms RMC Chapter 5 3 Antenna Control Unit describes how the sat nms RMC measures the antenna pointing and how it controls the motors 5 1 Radiometer Concept Principle Structure The radiometer type implemented is noise balancing noise injection The following diagram shows the principle structure A circulator switches between the antenna noise generator noise diode and a reference load The following detector RMD rectifies the different signals The RMC measure the signals and control the noise diode and the circulator Coldload gt LAN RS232 RS4xx Antenna Ref Load RMC Calculation of atmospheric attenuation E S COLO toro T sky TEST A ES Te 1 gt
50. mess is the measured noise temperature of the cold load This value has to be corrected with the following equations Equation 5 16 shows the basic calculation C 2013 SatService GmbH www satnms com RMC UM 1301 Page 42 47 SatService Gesellschaft f r Kommunikationssysteme mbH TY T p 2 0 b 5 16 The reflected power of the mismatched receiver is subtracted with 5 17 TP Terr 2 Q B Fy Tar 5 17 The waveguides are also afflicted with ohmic losses Equations 5 18 5 19 5 10 correct this influence T Las A os 5 18 Te Lives Te oes u 1 Degas 5 19 Finally the displayed value is calculated with equation 5 20 Tans Laa Te Eggs 1 To 5 20 MESS The RMC set the factor b 1 for a calibration so that the natural value is measured The RMC calculate the factor b automatically 5 2 2 Tip Curve calibration A radiometer system is calibrated with a tip curve This is a standard procedure by the on site installation and the calibration can be checked periodically For this procedure the elevation angle have to be well know better than 0 59 A tip curve should only be conducted under clear sky conditions because the atmosphere is reliable homogeneous The antenna moves from zenith theta 90 in direction to the earth theta 0 Every few degrees the atmospheric attenuation is measured In the zenith the attenuation a_z is the smallest because the way through the atmosphere is the shortest The
51. ncoders IN RMC 2 GND IN RMC 3 24V Power supply for waveguide switches antenna motor control end switches heater IN EXT and blower control and temperature control 4 GND IN EXT C 2013 SatService GmbH www satnms com RMC UM 1301 Page 11 47 SatService Gesellschaft f r Kommunikationssysteme mbH 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 npa gt SSSSCSCS S S 1 R Redundant power supply for the RMC and the position encoders IN 24V RMC 2 IN G G R R R R ed D MC 3 ed Redundant power supply for waveguide switches antenna motor control end IN 24V switches heater and blower control and temperature control EXT 4 ed IN D EXT 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 IN ewa IM IN N ed d N d d N GND EXT Power Output GND 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
52. ng or the sun outage may not work as expected Screen Refresh The reading page by default refreshes automatically every second The refresh rate may be slowed down setting it to zero disables the automatic refresh completely NTP server IP To enable the NTP clock synchronisation enter a valid IP address aaa bbb ccc ddd notation of a NTP server accessible to the radiometer Setting the address to 0 0 0 0 disables NTP time sync Communication The serial interface may be operated either with the MOD 95 Miteq protocol using a device address A to G or with a simple ASCII terminal protocol setting NONE See chapter 4 3 The RS232 remote control interface for details Rescom The port for the Rescom protocol emulation over TCP IP To enable the emulation port emulation port enter a valid port address Radiometer Front end Parameter Description Name No of This defines the type of radiometer front end connected to the controller measurement 1 defined a single channel radiometer channels 2 defines a dual channel radiometer 3 defines a triple channel radiometer in fact a dual channel measuring alternately at 2 frequencies at the second channel Meas The measurement frequency GHz of the first radiometer channel frequency channel 1 Meas The measurement frequency GHz of the second radiometer channel frequency channel 2 Meas The measurement frequency GHz of the third radiometer channel frequency channel
53. ng to different blowers and heaters For a connection with external devices please also take a look also to Elevation Motor Wiring 1 pwose OUT 3 BLWHORNE OUT 4 OUT BLW HORN C Blower for the horn antenna C 2013 SatService GmbH www satnms com RMC UM 1301 Page 15 47 s pwes our 6 BLWREFLC Blower foreefecor jour 7 mear OUT 8 HEAT REFLC Heater for reflector s a O CON17 RX Control SatService Gesellschaft f r Kommunikationssysteme mbH 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 1 NDT 6 oct RXZ Cireultor conmolrecener OUT 8 NDRXI __Noiedindecommolreeverl OUT 9 Lo RXI Local osciltrconrolrecever1 OUT BIND 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 l
54. ns 5 9 5 10 Feed loss The feed loss factor equation 5 9 L_h Reflector The reflector loss factor equation 5 12 loss L_rfl Media The media temperature used to calculate atmospheric attenuation from temperature temperature Misc Calibration Constants Reference Load Temperature Control The behavior of the reference load temperature control has heavy impact on the radiometer calibration and the stability reproducibility of measurement results This is the reason why these parameter have been located here rather than at the settings page with the other antenna temperature control parameters Parameter Description Name Ref load The target temperature of the reference load A single channel radiometer compares this target value to the reference load 1 temperature a radiometer with more than one channel the temp temperature control uses the average of both reference load temperatures as actual value in the control loop Ref load The P factor of the PI closed loop temperature control loop P factor C 2013 SatService GmbH www satnms com RMC UM 1301 Page 25 47 SatService Gesellschaft f r Kommunikationssysteme mbH Ref load The I factor of the PI closed loop temperature control loop I factor Tip Curve Calibration The settings in this section define the parameters of a tip curve calibration verification For a detailed description of the tip curve calibration procedure see section Ti
55. o eas frequency amel 1 ta e OH Meas frequency channel fim e ja Meas frequency channel asa m rasa rasa ng m e Reflector ss La CONC Reflector ss Lan m eM Reflectors Lar hno tame mi e O eres Lag CINC A Dierk CINC A CCT TOE CNC FG coupler ss Lv C 2013 SatService GmbH www satnms com RMC UM 1301 Page 33 47 SatService Gesellschaft f r Kommunikationssysteme mbH Iw22 HERA W G amp coupler loss L_wg2 Che cope os Ln aa ave os wit ma mess a ave os Lit mar Wve oss Lg ma A Waveguide oss Lat ma e O Waveguide oss Lat st AM pon WIG os Li m2 Aa CATIA mss e pork WIG os CL mp er ctop o mes o otr channel ote e mea equ ms I reee pra EN ee wu repasar raw io reci aw vate awe vo E remera 2 raw va awa vo e Radiometer chan 3 raw va om OFRAUTO _RFLBbwermode ro eH SC FL Bowertemp threshold hm OFRAUTO REL eermade pane RPL min temperate pam Den fee FL ater max temperature toh I e Toren O mar mx Reflection coef am Im BPR Reflection cost am ma mx Reflection coef am swe e seran somo e seme sei sun pos catan neral sou e e Sooo tara sue fe sampos tai emo fo sc O s O pereo a ro j O e Sna muel o a fe sneon wea fo soave w E e ge teat io p O crto teaz o rc resletpe cas mo a tar Tre samsung tet cre tz mo mm cre tens o nm cres C 2013 SatService GmbH www
56. o 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 IPC CHIP Tool Mi E Fie BIOS CHIP Info Scan for IPC CHIP s on the network Efel E e E 1CB16 ACU 0 192 168 1 8 255 255 255 0 192 168 1 1 j Clear list Close Use ping 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 C 2013 SatService GmbH www satnms com RMC UM 1301 Page 6 47 SatService Gesellschaft f r Kommunikationssysteme mbH 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 th
57. or 6 el The status string returned with the flgs command contains 28 status flags each being either 0 or 1 1 means the flag is active or the fault condition is true 0 means the flag is inactive or there is no fault Flag numbering starts with zero for the leftmost flag in the string SatService Gesellschaft f r Kommunikationssysteme mbH C 2013 SatService GmbH WWW satnms com RMC UM 1301 Page 36 47 SatService Gesellschaft f r Kommunikationssysteme mbH 4 5 FTP Download The radiometer controller stores on the compact flash card every second the measured sky temperature from each channel see also chapter 2 5 Format Compact Flash Card The RMC write every day one file This file can be downloaded with an ftp client But if the file from today should be loaded down the log to ftp have to be switched off Connect to the RMC with an ftp client and the user name password below in the table Then you can download the stored files User Name Password service service 4 6 FTPUpdate You can update the radiometer controller with a special tool FPPUpdate from SatService With this tool you can also read and write the configuration Update Open this tool in the folder where the update is stored Enter the corresponding IP address and select the device RMC Then push the button Start Update In the window you can see the actual status When the update is done you have to reboot the RMC with th
58. p Curve Calibration T C minimum elevation The minimum elevation angle to be set during the tip curve calibration The maximum elevation angle to be set during the tip curve calibration elevation T C number of steps The number of elevation steps to be done during the tip curve calibration T C measurement delay The time to wait after moving the antenna to the first measurement sample T C samples to average The number of measurements sample to average at one elevation setting Start tip curve Clicking to this link lets the radiometer immediately start a tip curve calibration measurement Cold Load Calibration The settings in this section define the parameters of a cold load calibration verification For a detailed description of the cold load calibration procedure see section Cold Load Calibration Parameter Description Name C L channel 1 Enter the nominal temperature of the cold load here This value usually is taken from nominal temp the cold load s data calibration sheet The value may depend on frequency C L channel 2 Enter the nominal temperature of the cold load here This value usually is taken from nominal temp the cold load s data calibration sheet The value may depend on frequency C L channel 3 Enter the nominal temperature of the cold load here This value usually is taken from nominal temp the cold load s data calibration sheet The value may depend on frequency C L samples to Th
59. s flash memory You may download the file by entering http aaa bbb ccc ddd TIPCURVE T XT at the address bar of your favourite web browser After a manual Tip Curve Calibration the user have to move the radiometer manual to the desired elevation angle 3 5 2 Cold Load Calibration The cold load calibration is used to calibrate the noise correction factor b in fact this fine tunes the slope of the linear function which computes the atmospheric temperature from the radiometer raw reading To start a cold load calibration connect a cold load to the test port of the radiometer channel to calibrate Then at the Calibration page select Switch channel 1 to cold load or Switch channel 2 3 to cold load depending on the channel where the cold load is connected This actuates the wave guide switch to the selected test port and changes the calculation of atmospheric temperature according to equation 5 16 to 5 20 The radiometer returns to the Reading page and displays the cold load temperature The displayed temperature value is based on the actual calibration of the radiometer You may now either select ABORT to return to normal mode this switches the wave guide back to antenna or START CALIBRATION in order to recalibrate the radiometer In the latter case the radiometer temporarily sets the noise correction factor b to 1 0 and takes the configured number of radiometer readings From the average of these readings it calculates a new no
60. sat nms RMC Radiometer Controller User Manual Version 1 7 2011 02 20 Copyright SatService Gesellschaft f r Kommunikatiosnsysteme mbH Hardstrasse 9 D 78256 Steisslingen satnms support satservicegmbh de www satnms com www satservciegmbh de Tel 49 7738 97003 Fax 49 7738 97005 SatService Gesellschaft f r Kommunikationssysteme mbH Table Of Contents Table OLC OMENS ins l IM E ME ee 4 PA RN 4 ZI is ae E oat rementag teste diaca sean ee tances 5 DD Seine IP Address a een 6 2 3 One cun Ihe RM A ae 7 DION OC EI OU e ea cia e esse 7 252 MIC Pir Descrptons auaa a Ente 8 2 3 3 DONE Supply DANO tunen ande 17 23 4 Mechanical Instalar alot 17 24 Commie cui the MIO ar idad ios 17 24 Onnee Or Lay OU rt a a a a a a a a E 17 242 RMD Pin Descrip ONS 100 OA A A A AS Ad 18 ALO WES io 19 24 4 Mechanical Installation SS AA u 19 25 Format Compact Flash Card it id nud bee Mees A eE 19 e 21 Sl The Web based User mera comia iia 21 2 DISPlayc d REA ti A AA AS A nata 21 30 Operational Para Meter essen 22 A sense er herli 24 A ee E 24 eto PP Coury eC ADEA MOM APRA O O a A A seien 26 32 Coldal 04d CAIDA ION ad id 27 3 0 1nstallaG on Paramete series en 21 NA COMTO een est net as 31 A General command Syiar as NE 31 AZ MS TOP LP remote Control ik Hacke Nails 31 AS Me RS2 32 remote Controlado 32 A Arial Aime lel Ist AR OOO Non een A A 32 1 ae nen ee else ee ern 37 OFERU I Ea ea re ee een schein 31 4 6 Rescom Interface Pro
61. tage monitor disabled this way is always considered to be OK and not taken into account for the summary fault Access Control Parameter Description Name C 2013 SatService GmbH www satnms com RMC UM 1301 Page 29 47 SatService Gesellschaft f r Kommunikationssysteme mbH User Defines the user password default user which is required to change any parameters Password from the Settings page An empty password disables the password prompting Administrator Defines the administrator password default admin which is required to change any Password configuration or calibration settings An empty password disables the password prompting C 2013 SatService GmbH www satnms com RMC UM 1301 Page 30 47 SatService Gesellschaft f r Kommunikationssysteme mbH 4 Remote Control The sat nms radiometer may be controlled remotely by a monitoring and control application either through the TCP IP interface or through a serial RS232 interface Both communication methods use the same commands and parameters however there are different frames around each message depending communication method used Controlling the device from the web interface the TCP IP remote control interface or via the serial interface is completely equal commands may sent to any interface at any time the radiometer will use the parameter it receives last 4 1 General command syntax The radiometer knows a number of parameters each identified
62. tains an unknown parameter name is used the reply is UNKNOWN e Numeric parameters are cut to the limits defined for this particular parameter e Misspelled choice values cause the radiometer to set the first value of the choice list e Assigning a value to a read only parameter will cause no fault however the radiometer will overwrite this parameter immediately or some seconds later with the actual value 4 2 The TCP IP remote control interface Controlling the radiometer through the network is done by means of HTTP GET requests Setting parameter values or querying readings or settings all is done by requesting HTTP documents from the radiometer The message to the radiometer thereby is coded into the URL as a CGI form parameter The radiometer replies a one line document of the MIME type text plain The document name for remote control is rmt hence assuming the radiometer is listening to the IP address 10 0 0 1 requesting a document with the URL http 10 0 0 1 rmt aat1 will let the radiometer reply the actual atmospheric attenuation in a one line text document aat1 0 42 C 2013 SatService GmbH www satnms com RMC UM 1301 Page 31 47 SatService Gesellschaft f r Kommunikationssysteme mbH This way all parameters may be queried or set you may use your favourite web browser to try out the remote control of the radiometer manually 4 3 The RS232 remote control interface Beside the network interface the radiom
63. tion The calibration constants used by the radiometer are managed with this page Also the tip curve and cold load calibration procedures are started here Test The test page gives some information about the hardware interfaces between the radiometer controller and the front end electronics This page is intended to be used for testing and installation tasks only Setup This button switches to the Setup page which lets you inspect or change less common parameters which usually are set only onceto adapt the radiometer to it s working environment Info After a mouse click to this button the radiometer shows a table with information like the serial number of the device or the revision ID and compilation date of the software Help Clicking to this button shows the on line version of this user manual 3 2 Displayed Readings The Readings page is the main page of the radiometer which shows the actual measurement values and some important settings Parameter settings reported here are for information only To change a setting switch to the Settings page The Readings page automatically refreshes once a second the refresh rate may be set at the Setup page The table below describes the information shown by this page Parameter Description Name Atm Displays the actually measured atmospheric temperature If the radiometer is equipped Temperature with less than three channels the readings which are not applicable are shown as Atm
64. to the setup page when the parameter has been changed To cancel a parameter modification you already started either use the Back button of you web browser or click to the Setup button on navigation bar Both returns to the setup page without changing the parameter you edited The table below lists the settings provided by this page C 2013 SatService GmbH www satnms com RMC UM 1301 Page 24 47 SatService Gesellschaft f r Kommunikationssysteme mbH Channel 1 2 3 Calibration Constants These calibration constants appear three times for each radiometer channel separately Parameter Description Name Noise The basic calibration factor calibrates the pulse count to atmospheric temperature correction calculation The noise correction factor usually is determined by a cold load calibration The b cold load calibration procedure built into the radiometer s software sets this value automatically when operator accepts the calibration result RX The antenna reflection coefficient equation 5 6 Reflection coeff r_ant The wave guide diplexer loss equation 5 8 W G amp The waveguide coupler loss equation 5 7 coupler loss L_w82 The external wave guide loss to the cold load equation 5 20 The external wave guide loss to the cold load equation 5 19 Test port The test port wave guide loss equation 5 18 W G loss L_wg5 The feed weight factor for correcting the feed horn noise equatio
65. tocol Emulation ooccooccooccocnncnocnnocononnncnncnonnnnconononnnnnnnnnnnnnncnonnnncnnnnnnnncnnnos 37 MES o SER en ee ee 40 Dd Radiometer A A A A 41 2 adiomicter Calor ensure 42 52 109 o AAA ches eat ed ace N 42 322 Tip Curve da D atO a A AS im aict ecades 43 Dio Anlenna Omi Os WII A a eres 43 dol POSTON Sensor PES a 43 Ded De let CA Did MOMs scenes A maanaeun asta eeiaeneneenanis 44 OMS Motor Control di lll 44 OS pecto ONS i n 46 C 2013 SatService GmbH www satnms com RMC UM 1301 Page 1 47 6 1 sat nms RMC 6 2 sat nms RMD SatService Gesellschaft f r Kommunikationssysteme mbH C 2013 SatService GmbH www satnms com RMC UM 1301 Page 2 47 SatService Gesellschaft f r Kommunikationssysteme mbH C 2013 SatService GmbH www satnms com RMC UM 1301 Page 3 47 SatService Gesellschaft f r Kommunikationssysteme mbH 1 Introduction The 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 in

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