sat-nms LBRX L-Band Beacon Receiver User Manual
Contents
1. LNB LO Frequencies The receiver lets you enter the receiver frequency in terms of the RF frequency at the antenna You have to configure the LNB conversion frequency at the receiver s setup page The receiver is prepared to manage C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 8 32 SatService Gesellschaft fiir Kommunikationssysteme mbH separate LO frequencies for a lower and a upper band LNB The setup parameter you have to configure are e High band LO frequency e Low band LO frequency e Band edge If your antenna provides only one single conversion frequency set this value for both LO frequency parameters and set the band edge to zero The receiver also supports applications where the LO frequency is above RF receive frequency In this case enter the LO frequencies as negative values LNB Supply Voltage The receiver is able to supply a LNB through the L band cable Set the LNB voltage parameter to the appropriate value The special value AUTO enables the LNB supply voltage and switches between 14V and 18V following the receive polarization you set LNB Frequency Band Selection For antennas switching between frequency bands with a 22kHz tone controlled switch the receiver is able to generate the 22kHz tone either permanently or automatically depending on the receive frequency Set the 22kHz tone parameter to one of the settings OFF ON or AUTO Relay 2 Function One of the relay outputs available a2. ON Measurement mode mt 61230100 Measurement bandwith mois vo 809990 dBm Noise level only vald GN modes note 59 characters max Tie tke of he endings webpage not orron novelas OOOO O eda character sting aamin password iu eharacter ting User password Post detector filter M E _ me drfr freq tri mm m Fe S S 5 oa C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 22 32 SatService Gesellschaft f r Kommunikationssysteme mbH rel2 LEVEL FTRACK Relay 2 function a v 0 1 Signal search active C O 600 Signal search delay H Bu A somp user defined Spectrum compensation 74 10600 ses OK FAULT Synthfat o a EN o v O Signal search enable Software version smo ro haracter string oron tm vo OK FAULT Presto mn 9999 0 dBm Ames udpa onma UD destination aas 4 5 One line read via TCP IP For compatibility with the sat nms power sensor the beacon receiver also may be polled for an automated monitoring by the requesting the read document with a HTTP GET command Assuming the receiver listens to the IP address 10 0 0 1 the complete URL for the request is http 10 0 0 1 read fmt txt The fmt txt parameter forces the power sensor to reply a one line text document rather than the HTML coded page which is normally displayed by the web browser The beacon receiver answers a text plain type document which consist of one
3. l l l l l l l l l l l l l l l l l l l l l l l l l Test J8 1 Low Band vertical te J8 2 Low Band horizontal e me J8 3 High Band vertical I J8 4 High Band horizontal l l l l l l l l l l I l l l l l l l l l I L I Block diagram C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 10 32 SatService Gesellschaft f r Kommunikationssysteme mbH 3 Operation The sat nms LBRX beacon receiver is designed to be controlled over a network link using a standard web browser This means in practice that the user interface to the receiver appears in your browser window after you type in the receiver s IP address in the address field of the browser program Operating the receiver is mostly self explanatory 3 1 The Web based User Interface After having connected the LBRX to a power supply and set the receivers IP address you can access the receiver s user interface To do this start your favorite web browser program Internet Explorer Netscape Navigator 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 LBRX receiver you want to control The receiver shows a web page consisting of a navigation bar at the left side of the browser window and the actual readings of the receiver in the main part of the window The readings automatical
4. The D C and data connectors of the receiver all are located at one of the side panels of the enclosure The figures below illustrate location of connectors and the pin out C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 7 32 SatService Gesellschaft f r Kommunikationssysteme mbH 3 er Analog J3 Je J Beacon Lvl Serial Network 24 Alarm OOo O O amp Lee 5 d 3 1 1 1323445 9 7 b 7 9 Sa 000 00093 pin J3 pin RS232 serial interface DCE no D 9P pin no SUB D 9P socket internally bridged to pin 7 Beacon level 0 10V SMA female Power supply 24V not connected ND Fault relay 120V D C 100mA max Fault relay evel Frequency track fault relay 120V C 100mA max N L D Level Frequency track fault relay Ethernet 10Base T RJ45 N mh D RF connectors The other side panel of the enclosure contains the RF connectors These are the RF input which may be configured to inject a LNB supply voltage of 14 or 18 Volts and the RF output which loops through the input signal O J5 L Band Input JE DC for LNE L Band Output RF Input SMA female RF Output SMA female 2 4 Configuring the Receiver This chapter gives a short overview about some configuration parameters you want to set after you have installed the sat nms LBRX beacon receiver A complete reference of all available setup parameters is given in chapter 3 4 Installation Parameters
5. arrow keys to step through the available display variants the CLEAR key resets the display to show the receive frequency FREQUENCY FAULT FLAGS ATTENUATION sy CARRIER LEVEL BANDWIDTH NOISE LEVEL FILTER Pi o es TEMPERATURE THRESHOLD A arly in C N measurement modes 3 5 2 The Menu The menu mode lets you view and change the receiver s settings From the display mode you enter the menu by pressing the key To leave the menu repeatedly press the key until the display screen appears again If there are no keystrokes for 2 minutes the receiver automatically leaves the menu and returns to display mode The menu structure is shown in the diagram below MENU Rx Frequency INBVotage Ls FATIS Alarm Threshold H Analog Out Offset Sig Search Delay Relay2 Function on Mode C N Mode Noise Meas Freq Noise Meas Interv The SETTINGS sub menu lets you view and modify the operational parameters of the receiver The SETUP sub menu contains a number of parameters which usually only need to be changed during the beacon receiver installation For further information about the receiver parameters see the chapters 3 3 Operational Parameters and 3 4 Installation Parameters of this manual C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 17 32 SatService Gesellschaft f r Kommunikationssysteme mbH To navigate in the menu use the DC to select a sub menu then press to descend in the selected
6. beacon receiver e The L Band Beacon Receiver can be damaged if the total RF input power is higher than 10dBm specified maximum value Do not connect the RF input of the L band Beacon Receiver to interfaces where the total output power is higher than the specified value of the data sheet or indicated on the Receiver e In case of a failure do not open the L Band Beacon Receiver you will loose 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 e When connecting the receiver s fault relay circuits observe the maximum ratings 120V D C 100mA The fault circuits are Photo MOS semiconductor relays which will immediately damaged when connected to higher voltages than specified 2 2 Setting the IP Address C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 5 32 SatService Gesellschaft f r Kommunikationssysteme mbH Before you can operate the beacon receiver you need to set the receiver s IP address There is a special configuration program on the documentation CD shipping with the receiver for this purpose We recommend to configure the receiver s TCP IP settings before you install the receiver at it s final place To configure the receiver the following equipment is required e The sat nms LBRX beacon receiver itself e A24V D C power supply e A Computer running a M
7. line As shown in the example below the line consists of a set of keyword value pairs separated by amp characters Within each pair keyword and value are separated by the character levl 58 33 amp cton 8 33 amp c2n0 44 32 amp fofs 3 amp adcv 12345 amp temp 22 5 amp tflt OK amp fflt OK amp sflt OK amp dflt OK amp sact 0 The format does not use fixed column widths for the values however the precision of floating point values is always as shown in the example An application which parses this string should not rely on the order of the values in the line Future version of the receiver may provide additional values which not necessarily will appear at the end of the line A description of the parameters is given in the chapter Parameter list above 4 6 UDP level distribution Polling the beacon receiver by means of HTTP GET requests via the network interfaces is limited in speed The beacon receiver may be polled about three times a second this way For step track application this may be too slow To overcome this limitation the beacon receiver provides the capability to distribute the measured level or c n value as UDP datagrams It does this in real time as the values are sampled by the beacon receiver 8 samples per second The sat nms ACU ODM uses this feature Protocol Definition The UDP datagrams are sent to a configurable IP address at port 2000 Each datagram carries the actual measurement value as a zero terminated s
8. main signal flow the coupling is compensated by a small amplifier and this signal is provided as a L band test output signal with the same output level at the L Band test output SMA connector with the same power level for test and measurement purposes The L band signal is filtered within a 950 to 2050MHz filter and then attenuated by a programmable attenuator in steps of OdB 10dB 20dB or 30dB After this programmable attenuator a first amplifier with approximately 20dB of gain and a noise figure of 3 5dB amplifies the signal for the first down conversion in a 13dBm mixer This mixer converts the L band input signal to the first IF of 765MHz by use of a PLL frequency synthesizer This mixer is highly linear and determines the overall dynamic range of the system The 765MHz signal is then filtered by use of two 3 pol ceramic filters which attenuates the out of receive channel signals After these two filter stages the 765MHz signal is converted by a second mixer to a 70MHz IF by use of the fractional N synthesizer Direct behind the mixer a SAW filter with approximately 300kHz bandwidth is used to filter the 7OMHz signal This filter has a very high Q so that only frequencies inside the bandwidth will be fed to the last mixer circuit This mixer converts the 7OMHz IF into the final 455kHz IF by use of 1 10 the frequency of the fractional N synthesizer The 455kHz IF signal is the fed into a one of four analog multiplexer circuit Via the internal micr
9. to accept this D C voltage you must ensure that the voltage is switched off before you connect the receiver to that signal source Hence the typical sequence of tasks when putting an sat nms LBRX beacon receiver into operation is as follows 1 Read the chapter Safety Instructions 2 Set the receiver s IP address 3 Check the LNB voltage setting 4 Mechanically mount the receiver 5 Connect the receiver to it s signal source the power supply and the Ethernet network In chapter 2 6 The sat nms LBRX19 you find some additional information about the installation of the 19 mountable variant of the sat nms beacon receiver 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 Power Sensor Unit e Select and apply the appropriate 24V D C voltage according to the data sheet and documentation before connecting power e Before you connect the L Band Beacon Receiver to an L Band distributor or LNC please make sure that the unit to which you connect can handle 18V D C voltage on its RF L Band output Some L Band IF distribution equipment does not have D C blocks included and the unit could be damaged If you are not sure how the interfacing equipment will behave switch off the LNC supply voltage in the Setup menu before you connect a cable to the L Band input of the
10. track fault is generated if the tracked frequency reaches the limit C N Noise With this parameter you select if the receiver shall perform a plain input level measurement measurement or a C N measurement A description of the C N measurement function of the receiver is given in chapter 5 3 C N Measurement You may select one of the following measurement modes OFF The receiver performs a plain level measurement The Readings page shows the input level in dBm C N The receiver measures the signal noise ratio The Readings page shows the C N in dB C NO Like the C N mode but the receiver normalizes the C N value to 1 Hz measurement bandwidth The Readings page shows the C NO in dB Hz Noise With this parameter you specify the frequency at which the receiver shall measure the Measurement noise level at a certain interval Like with the receive frequency the LO frequency Frequency settings made at the Setup page are taken into account also for this frequency value To get reasonable results with a C N measurement you should consider the following 1 The receiver does not change the LNB frequency band setting when it switches from the level measurement to the noise measurement The LNB probably would change it s gain in this case The noise measurement frequency hence must be in the C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 13 32 SatService Gesellschaft f r Kommunikationssysteme mbH same frequency ba
11. tracking facility of the receiver ON or Tracking OFF Please note that switching off the frequency tracking does not reset the frequency offset which is applied by the frequency tracking To reset the offset set the receiver s frequency setting C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 29 32 SatService Gesellschaft fiir Kommunikationssysteme mbH Frequency ftri This parameter sets the interval on which the frequency tracking procedure Tracking operates The value is in seconds Recommended settings are 15 seconds to tune Interval the receiver quickly to a frequency you do not know precisely For normal operation a frequency tracking interval of one hour 3600 secs is recommended Frequency ftrw With this setting you limit the frequency offset the frequency tracking procedure Tracking may apply to the nominal frequency The frequency tracking never tunes the width receiver to a frequency outside the specified range a frequency track fault is generated if the tracked frequency reaches the limit 5 5 Signal search The signal search function enables the receiver to search a signal within the frequency tracking width A signal search is triggered either manually or automatically if the signal disappears for a certain time The beacon receiver monitors the threshold fault to detect if the signal is present When a signal search is initiated the receiver steps over the frequency range from f ftrw to f
12. 1 32 SatService Gesellschaft fiir Kommunikationssysteme mbH 6 Specifications The table below summarizes the beacon receiver s specifications Respe S o programmable 5 0 5 0 V dB OV point of analog output voltage programmable 200 to 0 dBm Output Connector for meee output voltage aca O female Linearity failure failure 1dB in any 10 dB in any 10 dB Switchable input attenuator to adapt the dynamic range 0 10 20 30 dB and input a level MAC Interface Specficaon Summary fault indication Photo MOS relay contact D SUB 9 male 120 V D C 100 mA Level alarm indication or frequency tracking alarm Photo MOS relay contact D SUB 9 male 120 V D C 100 mA Electrical Mechanical Specification ares a C 2013 SatService GmbH WWw satnms com LBRX UM 1301 Page 32 32
13. 68 1 1 l 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 receiver s enclosure If the list stays empty the beacon receiver is not connected properly If there are more entries in the list the configuration program has found other devices in this network segment which use the same technology C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 6 32 SatService Gesellschaft f r Kommunikationssysteme mbH 6 Now type CTRL I to open the IP configuration window of the program In this form enter the receiver s serial number it s new IP address and network mask If the receiver 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 beacon receiver IPC CHIP Tool 0 x File BIOS CHIP Info IPconfig5nr x Lise this form to define the IP configuration of a chip with a known serial number Serial number of CHIP TCE 16 Chip IF configuration IF Address 132 168 1 1 Network mask 275 455 255 0 Gateway TEN F Use DHCP Now the IP configuration of the receiver is completed You may finally want to test if the beacon receiver is reachable now Start your web browser and type the receiver s IP address into the URL field of
14. OFF The receiver performs a plain level measurement The Readings page shows the input level in dBm C N The receiver measures the signal noise ratio The Readings page shows the C N in dB C NO Like the C N mode but the receiver normalizes the C N value to 1 Hz measurement bandwidth The Readings page shows the C NO in dBHz Noise cnmf This parameter specifies the frequency at which the receiver shall measure the Measurement noise level at acertain interval Like with the receive frequency the LO Frequency frequency settings made at the Setup page are taken into account also for this C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 28 32 SatService Gesellschaft fiir Kommunikationssysteme mbH frequency value To get reasonable results with a C N measurement you should consider the following 1 The receiver does not change the LNB frequency band setting when it switches from the level measurement to the noise measurement The L N B probably would change it s gain in this case The noise measurement frequency hence must be in the same frequency band as the receive frequency 2 Measuring the noise level at the band edge may falsify the result due to the LNB s band filter The measured noise level may be too low in this case 3 You should verify with a spectrum analyzer that no signal disturbs the noise measurement at the selected frequency Noise cnmi This parameter defines the interval at which the rece
15. SatService Gesellschaft f r Kommunikationssysteme mbH The beacon receiver software compensates this effect by varying the scale and offset values used to compute the dBm value from the ADC reading During the factory tests each beacon receiver gets calibrated at several temperatures The data processing of the receiver software then works as described below INFOT SPECTRUM ATTENUATOR COMPENSATION OFFSET RECENE FREQUENCY FREQUENCY CALIBRATION INPUT ATTENUATOR MEASUREMENT BANDWIDTH SCALE AID OFFSET DISPLAYED CONVERTER CALIBRATION VALUE dBm SIGAAL LEVEL FAULT RELAY USER SUPPLIED POWER THRESHOLD 5 3 C N Measurement In addition to the normal level measurement the sat nms LBRX beacon receiver is able to perform C N measurements This is done by measuring the level of the received noise at a frequency other than the receive frequency in regular intervals Each measured signal level then gets converted to a C N value by referring it to the noise level value While the receiver measures the noise level it freezes the displayed C N value as well as the analog output voltage for this time The behavior of the C N measurement function is controlled by three operational parameters Parameter Remote Description Name Command C N Noise This parameter controls if the receiver shall perform a plain input level measurement measurement or a C N measurement The following measurement modes are available
16. 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 receiver The receiver 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 Parameter Description Name RF receive This is the receiver s nominal receive frequency Depending on the LO frequency settings frequency made on the Setup page the frequency value either is expressed as the RF receiver frequency orthe L band frequency at the receiver s input If the 22 kHz Tone setup parameter is configured as AUTO changing the frequency also may switch the 22kHz modulation on the LNB power supply on or off Polarization If on the Setup page the LNB voltage parameter is set to AUTO the receive polarization may be set with this parameter by changing the LNB Voltage Attenuation The receiver provides a switchable input attenuator which lets you adjust the input level in 10 dB steps This is specially useful with large Antennas pointing to a satellite which generate a high flux density With the attenuator you may adjust the input level in orde
17. alue shows the voltage the receiver actually outputs at it s analog output port Please note that the reading shown here is not calibrated match the true output voltage exactly Temperature The temperature shown is the temperature measured on beacon receiver printed circuit board The temperature at this place normally is about 20C above the environment temperature hence temperature readings at 65C are not unusual Receive If the receive level falls below the Alarm threshold set on the Settings page the receiver Level Alarm states FAULT here Frequency If the frequency tracking function is enabled and the tracking algorithm fails to optimize Tracking the receive frequency setting the receiver reports a FAULT here Alarm Synthesizer If one of the PLL synthesizers in the receiver does not lock a FAULT is reported here Lock Alarm This happens if you tune the frequency out of it s valid range D C Supply The receiver monitors it s internal supply voltages if one of them is out of range a Alarm FAULT is stated here 3 3 Operational Parameters The page Settings contains the receiver 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
18. ble interface types a HTTP Web Interface via an internal Web Server a RS232 interface or the analog voltage output The sat nms beacon receiver is controlled remotely by a monitoring and control application through the TCP IP interface All communication with the power sensor is made with HTTP get requests The beacon receiver implements the Hypertext Transfer Protocol HTTP RFC 1945 both for the user interface and for the M amp C interface This document is the user manual provided with the sat nms LBRX beacon receiver It contains all necessary information how to install setup and operate the receiver The user manual is available as a printed document and for on line reading on the beacon receiver itself as well Version 2 0 2011 11 10 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 nms documentation CD and at www satnms com e Installation The installation chapter guides through the installation and setup of the LBRX beacon receiver It describes the mechanical concept of the receiver box and the assignment of the receiver s connectors Finally you learn in this chapter how to set the receiver s IP address which is a essential precondition to operate the receiver by means of a web browser This section is available in the printed version only e Operation The sat nms LBRX beacon recei
19. d for the LNB supply which can be programmed either to 14V or 18V Furthermore this LNB voltage can be modulated by the Diseq_22kHz signal to provide a DisegC interface The DisegC interface is not implemented in the first design stage but the hardware basis is given with this circuit design and the real DiseqC implementation is later on a question of software in the microcontroller on the beacon receiver M amp C board At the moment only a 22KHz signal is generated if necessary In cases where no LNB supply is needed the D C converter can be switched off by the LNC_ON signal In order to reduce interference from the microcontroller to the RF part and also to reduce cost on the PC board production the circuit for the monitoring and control of the L Band beacon receiver is designed on a second printed circuit board The main interface to the beacon receiver RF board is via the SPI interface This means that the analog to digital converter the temperature sensor and also all monitoring and alarm input and output ports are placed on the RF board and the digital information is routed via the SPI bus to the M amp C board and its microcontroller In addition to that the following interface is provided the output of the logarithmic detector provides a analog output voltage which can be used via two interfaces e Analog output e Output via 16bit analog to digital converter The analog output voltage is provided to allow the receiver to interface with othe
20. dware fault LV The measurement value is below the threshold defined in the settings FT The receiver failed to optimize the receive frequency probably due to a bad C N The example below shows a more practical example of a faults display page It tells that actually everything is OK but since the last reset of latched faults the beacon level at least once was below it s threshold FLT LAT Ly When you leave the faults display page G does this the receiver asks whether to reset the latched faults To acknowledge this press ED To leave the fault display without resetting the latched faults press a second time ENTER resets latched faults C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 19 32 SatService Gesellschaft f r Kommunikationssysteme mbH 4 Remote Control The sat nms beacon receiver 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 receiver will use the parameter it receives last 4 1 General command syntax The beacon receiver knows a number of para
21. e beat cah stared ANa 27 De NUM ASSIGN 5 5 ee ee 28 NN 1 2 esse see rise 29 Ded renal Se dich ee ee le ee ee ei 30 O SPECILICAHONS eek eu 32 C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 1 32 SatService Gesellschaft fiir Kommunikationssysteme mbH C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 2 32 SatService Gesellschaft f r Kommunikationssysteme mbH 1 Introduction The sat nms L band beacon receiver manufactured by SatService GmbH is a measurement tool which measures the RF input level and provides this information as output signal for control systems The main application of this receiver is in antenna tracking systems where the receiver provides the tracking signal level to the antenna step track controller Other applications can be pilot measurement and control loops like uplink power control The beacon RX receives a satellite beacon signal which is down converted to L Band by a PLL stabilized Low Noise Converter LNC at its L band interface input The beacon RX does not demodulate any satellite because the satellite signals are sometimes CW signals but also very often modulated in FM or BPSK form Due to this fact the best implementation is a non coherent receiver which measures the input level in a user selectable defined bandwidth and provides this as a dB linear and calibrated analogue output voltage and digital information The level output is provided by three different and parallel availa
22. e note that the threshold value refers to the signal level even if the receiver operates in a C N measurement mode Signal search Setting this parameter to ON enables the automatic signal search function With signal enable search enabled the receiver searches the signal within the frequency tracking range when the signal ist lost Chapter 5 5 Signal search describes this function more detailed SEARCH NOW starts a search scan immediately regardles of the enable setting Signal search This parameter defines the time the receiver waits after the signal was lost until a search delay scan ist started The valid range of this parameter is 0 600 seconds Frequency This parameter switches the the frequency tracking facility of the receiver ON or OFF A Tracking description of the frequency tracking facility is given in chapter 5 4 Frequency Tracking Frequency This parameter sets the interval on which the frequency tracking procedure operates The Tracking value is in seconds Recommended settings are 15 seconds to tune the receiver quickly to Interval a frequency you do not know precisely For normal operation a frequency tracking interval of one hour 3600 secs is recommended Frequency With this setting you limit the frequency offset the frequency tracking procedure may Tracking apply to the nominal frequency The frequency tracking never tunes the receiver to a width frequency outside the nominal frequency this value a frequency
23. e the receive frequency e g for a C Band application enter the LO frequency as a negative value Low band LO This parameter sets the conversion LO frequency frequency for the lower frequency C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 14 32 SatService Gesellschaft f r Kommunikationssysteme mbH frequency band LNC Common values for this frequency are 10000 MHz or 9750 MHz for consumer antennas Set this value to zero if you intend to set the receive frequency in terms of L band frequency If the LO is above above the receive frequency e g for a C Band application enter the LO frequency as a negative value Band edge This parameter defines the frequency threshold where to switch between the frequency bands Analog output This parameter defines the slope of the receiver s voltage output in V dB The output voltage has a range of 0 10 V Setting this parameter to 0 25V dB lets the analog output cover a dynamic range of 40 dB Analog output This parameter defines which input level gives OV output offset UDP This parameter defines the IP address to which the beacon receiver sends UDP destination datagrams with the actual measurement value Enter the destination IP address in address dotted quad notation or the keyword none to prevent the beacon receiver from sending UDP datagrams Chapter 46 UDP level distribution explains this communication feature more detailed Communication Th
24. etting When operated at with a web browser clicking to SEARCH NOW executed this command Reading back the sfrc parameter always returns an empty string Force If a 1 is written to this parameter the receiver immediately starts searching regardles If the receiver is tuned to a new frequency while the signal search function is enabled the frequency offset is set to O and the receiver operates at this frequency for sdly seconds If the received signal stays below the threshold during this time the receiver starts searching After a search cycle has been finished the receiver is tuned to that frequency which gave the highest level during the search If after a short delay for signal settling the receive level still is below the threshold the next search cycle starts immediately The signal search operates in steps of approx 80 of the measurement bandwidth This is to make the search procedure as fast as possible The signal frequency therefore is not determined very accurately If you have enabled the frequency tracking function at the same time the receiver performs a frequency track cycle directly after the signal search If frequency tracking is switched off the receiver tuning is left at the frequency offset the search alorithm has found C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 30 32 SatService Gesellschaft fiir Kommunikationssysteme mbH C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 3
25. fault status of the receiver An asterisk reports a fault the underscore character _ stands for OK L set local Sets the device to local mode The sat nms receiver does not distinguish between local and remote states It ingores the command and replies it like the Novella receiver with the statrus string described above set Sets the device to remote mode The sat nms receiver does not distinguish between local remote and remote states It ingores the command and replies it like the Novella receiver with the status string described above Unlike the Novella L band device the sat nms beacon receiver applies the the LO frequencies set at the setup page to this value If you want to resemble the Novella receiver exactly set the LO frequencies to zero set With this command the receivers frequency is set The letter F must be followed by the frequency receive frequency in kHz formatted as an integer value 8 digits with leading zeroes Other commands are rejected as unknown command by the sat nms receiver C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 24 32 SatService Gesellschaft fiir Kommunikationssysteme mbH C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 25 32 SatService Gesellschaft fiir Kommunikationssysteme mbH 5 Theory of Operation The beacon RX receives a satellite beacon signal which is down converted to L Band by a PLL stabilized Low Noise Converter LNC at its L ba
26. ftrw in steps of 0 8 msbw The receiver detects at which frequency the highest level is achieved and finally tunes the receiver to this frequency The frequency offset of the frequency tracking is adjusted for this the nominal frequency remains unchanged The duration of the search cycle depends on the bandwidth an tracking range settings the maximum expected value bw 6kHz range 150kHz is 1 minute The behavior of the frequency track facility is controlled by the following operational parameters Setting this parameter to ON enables the automatic signal search function If the input signal falls below the alarm threshold for a certain time a signal search is initiated Signal sdly This parameter defines the time the receiver waits after the signal was lost until a search search scan is started The valid range of this parameter is 0 600 seconds delay Alarm thrh The threshold value which primarily is used to generate a signal missing fault is very threshold important for the signal search function If the measured input level falls below this threshold for at least sdly seconds a search cycle is triggered You must sxet the threshold to a reasonable value in order to let the receiver detect that the signal is missing Tracking procedure A search cycle always starts at f ftrw and ends at f ftrw Frequency ftrw This also parameter defines the frequency range which is covered by the search width search of the ssen s
27. h listen to UDP datagrams at port 2000 may be disturbed by the data send by the beacon receiver e You must not enable UDP broadcasts for more than one beacon receivers in a network Receivers of the UPD messages might fail to distinguish the messages coming from different beacon receivers e IP routers also some sorts of switches deny to forward UPD broadcasts unless they are explicitly configured to do so 4 7 Novella protocol emulation The sat nms beacon receiver provides a Novella remote protocol emulation on the serial RS232 interface To enable this mode at the Setup page set the Novella emulation setup parameter to ON At the same place you set the protocol address A G NONE makes no sense as the Novella receiver does not support a plain terminal protocol The Novella protocol emulation replicates the operational parameters of the Novella receiver They are in particular status The receiver replies with the Novella status string RFxxxxxxxxyyyz in the given request protocol frame RF at the beginning states that the receiver is in remote mode XXXXXXXX is the actual receive frequency in kHz using a fixed format with leading zeroes yyy signals the actual receive level as a 3 digit hexadeciamal number The value 000 fff resembles the analog output voltage 0 10V of the receiver You may use the appropriate setup parameters to scale the output for your needs Finally the last character reports the summarized
28. he beacon receiver also provides an RS232 serial port which can be used to control the device remotely Depending on the device address set the receiver 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 receiver expects each message it receives to be packed into a frame as described below je message body C ek e o o m ma je The checksum byte is calculated using an algorithm as implemented by the following formula io 2 3 i ai sum 32 7 byte 1 32 modulo 5 PL i 1 This protocol type is known as MOD95 or Miteq protocol The receiver also packs it s reply in a protocol frame as described above incomplete frames checksum errors or address mismatches let the receiver ignore the message The time between the characters of a message must be less than 5 seconds or the receiver will treat the message as incomplete If the beacon receiver is set to the device address NONE it uses a simple line protocol instead of the framed protocol described above Messages sent to the receiver have to be terminated with a carriage return character ASCII 13 the receiver terminates replies with a CR LF pair ASCII 13 10 There is no echo for characters entered hence this protocol easily may be used for computer based remote control 4 4 Pa
29. hed fault condition The LED lites on if a Fault Alarm occurs and stays on until the operator clears the latched fault see 3 5 6 Fault Display for details e The Alarm LED is on while the receiver is in alarm state This is the same condition which controls the fault relay output Enter y o o ums E Ea Clear Keys The front panel keyboard provides beside the numeric keys four arrow keys and two keys named ENTER and CLEAR The general meaning of the keys remains constant through all levels of the menu The ENTER key descends in the menu tree accepts and stores changed values The CLEAR key leaves to higher menu levels abandons changes when editing parameters It also resets the alarm buzzer when in display mode The arrow keys navigate in the menu in some cases they also increment decrement values 0 9 The number keys are to enter numeric parameters 3 5 1 Display Mode The display mode shows the actual reading and some additional information in the display This is the default mode the beacon receiver enters it automatically after power on Depending on the selected measurement mode the default display looks like this LEW 74 45 dBm CH 12 45 dEl CHE 8 45 dEHZ H 123245 675 MHz H 12345 6575 MHz H 12345 6708 HHz level measurement C N measurement C NO measurement The upper display line shows the actual measurement the lower line shows the receive polarization and frequency the polarization is only sho
30. hows the actual C N or C NO Frequency This is the frequency the receiver is tuned to Depending on the LO frequency settings made on the Setup page the frequency value either shows the true RF frequency received by the antenna or the L band frequency at the receiver s input Frequency This value shows the actual frequency tracking offset the receiver applies to the receive tracking frequency The true receive frequency used by the receiver is the nominal frequency from offset the field above with the offset from this field added A frequency offset displayed here is added to the nominal frequency even if the frequency tracking is switched off Setting a new nominal frequency value resets the offset to zero Frequency Shows if the frequency tracking function is actually enabled tracking C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 11 32 SatService Gesellschaft f r Kommunikationssysteme mbH Attenuation Shows the actual input attenuator setting Measurement Shows the measurement bandwidth actually used by the receiver bandwidth Post detector This is the low pass filter applied to the measured level before the value gets displayed or sent to the analog output of the receiver The filter corresponds to the video filter of a spectrum analyzer Noise level If the receiver operates in one of the C N measurement modes this value shows the noise level the receiver measured with the recent measurement This v
31. icrosoft Windows operating system equipped with CD ROM drive and Ethernet network card e A CATS5 crossover network cable or a Ethernet hub and standard network cables to connect the beacon receiver and the computer e The CD ROM shipping with the sat nms receiver Setting the receivers IP parameters now is easily done within a few minutes 1 First install a network cable between the receiver 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 beacon receiver Without a crossover cable you need to connect both the computer and the beacon receiver to the same network hub using two standard network cables It is essential that the computer and the receiver are connected to the same network segment the configuration program is not able to find the beacon receiver through routers or network switches 2 Now power on your computer and connect the beacon receiver to the 24V D C supply 3 Insert the CD ROM into the computer s drive and inspect it s contents through the My Computer icon on your desktop Double click to the ChipTool exe program in the ChipToo directory 4 When the ChipTool program is running type CTRL F to make the program search the beacon receiver The program shows a list containing at least one entry describing the actual network parameters of the receiver Metmask Gateway 1CEI6 ACU 0 119216818 255 255 255 0 192 1
32. is OK but contains 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 receiver to set the first value of the choice list e Assigning a value to a read only parameter will cause no fault however the beacon receiver will overwrite this parameter immediately or some seconds later with the actual value 4 2 The TCP IP remote control interface Controlling the beacon receiver 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 receiver The message to the receiver thereby is coded into the URL as a CGI form parameter The receiver C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 20 32 SatService Gesellschaft fiir Kommunikationssysteme mbH replies a one line document of the MIME type text plain The document name for remote control is rmt hence assuming the beacon receiver is listening to the IP address 10 0 0 1 requesting a document with the URL http 10 0 0 1 rmt levl will let the receiver reply the actual beacon level in a one line text document levl 52 31 This way all parameters may be queried or set you may use your favorite web browser to try out the remote control of the receiver manually 4 3 The RS232 remote control interface Beside the network interface t
33. is parameter defines the communication address to be used with the serial interface You may select an address A G for the packet mode communication protocol or NONE to switch the communication mode to a plain text protocol Novella This parameter sets the communication protocol the receiver provides with the serial emulation RS232 interface OFF enables the standard sat nms communication protocol as described in chapter 4 Remote Control Setting the parameter to ON makes the receiver behave like a Novella beacon receiver The Novella protocol emulation is described in chapter 4 7 Novella protocol emulation Relay 2 This parameter defnes if the beacon receiver shall signal a beacon level fault LEVEL function or a frequency track fault FTRACK at the relay 2 output Note You may enter a note comment here which is displayed by the beacon receiver as the heading of the Readings page Display refresh With this parameter you control the display refresh rate of the standard reading status web page The default setting is 1 second You may slow down the page refresh down to once every 30 second with this setting Setting the refresh rate to O disables the page refresh completely you may use your borswer s reload button to trigger a page refresh manually in this case User password Here you can define the password for the user login Default password is user When you are logged in as user you can contro
34. iver inserts noise Measurement Interval measurements in the C N modes The time is specified in seconds 3600 secs being one hour is a suitable setting in most cases 5 4 Frequency Tracking The sat nms LBRX beacon receiver using it s non coherent receiver design does not automatically follow an input signal drifting in frequency like a PLL receiver would do To let the receiver compensate effects like an LNC frequency drift due to temperature or Doppler frequency shift a frequency tracking algorithm has been implemented in the receiver With frequency tracking enabled the receiver tunes the receive frequency a small amount up and down at certain intervals Such a search step takes less than one second while the frequency is detuned the level reading and the analog output of the receiver stays frozen pa fra The step size used for a frequency search step depends in the measurement bandwidth the receiver automatically selects the appropriate step size Receiving a C W signal the receiver software expects a signal degradation of 1 3 dB when the frequency has been tuned up or down The receiver evaluates the signal center frequency by comparing the measured level at the old frequency f atf d and f d to the known shape of the filter The behavior of the frequency track facility is controlled by three operational parameters Parameter Remote Description Name Command Frequency ftrk This parameter switches the the frequency
35. l the operating parameters at the Settings page and the fine tuning buttons at the navigation bar You can t modify the setup parameters while logged in as user Admin Here you can define the password for the admin login Default password is admin password When you are logged in as admin you have full access to all parameters of the receiver 3 5 Frontpanel Operation The rack mountable version of the sat nms beacon receiver provides a LCD and a small keyboard at the front panel for operating the device locally Display The 2 line display normally shows the actual measurement value and some common parameters During menu operation it is used to view and edit each individual parameter of the beacon receiver LEW 74 45 dem H 12 340 675 MHz C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 15 32 SatService Gesellschaft f r Kommunikationssysteme mbH LEDs Three LEDs at the front panel signal the summary state of the beacon receiver e The Remote LED is on while the receiver is controlled from a remote computer via network or serial interface There is no elusive remote or local lockout mode with the sat nms beacon receiver Local operation of the receiver is still possible while the device is accessed remotely The Remote LED is just an information that someone from remote talks to the device and a local change of parameters may interfere with this e The second LED labeled Test shows the latc
36. ly refresh once a second The navigation bar at the left contains five buttons which build the receiver s main menu Readings This button switches back to the receivers main page you already see when you connect to the receiver This page displays the actual readings of the receiver Settings By clicking to this button you switch to the Settings page where you can view and change the common operational settings of the receiver like frequency or bandwidth Setup This button switches to the Setup page which lets you inspect or change less common parameters which usually are set only once to adapt the receiver to it s working environment Info After a mouse click to this button the beacon receiver 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 beacon receiver 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 table below describes the information shown by this page Parameter Description Name Input level This is the actual signal level at the receiver s L band input When operating on one of the C N measurement modes this field s
37. menu branch Within the SETTINGS and SETUP sub menus use the C keys to select the desired parameter Pressing one returns to the main menu level pressing it twice returns to display mode 3 5 3 Editing Numeric Parameters To change a numeric parameter like the receive frequency select this value from the SETTINGS or SETUP menu The upper display line describes the parameter the lower line shows it s value Ra Frequency 12 245 670 MHz To set a new value press ED This clears all figures from the value display and shows gt at the first column to signal the editing mode Using the number keys you enter the new value The digits fill the entry field from right to left like with a pocket calculator The CD key may be used to delete the last digit Ra Frequency Ra Frequency F 1 MHz gt 11145 444 MHz To accept the edited value press E This checks the entered value against it s limits and executes the parameter change Pressing twice the first key press clears the display leaves the editing mode without changing anything 3 5 4 Editing Multiple Choice Parameters To change a numeric parameter like the measurement bandwidth select this value from the SETTINGS or SETUP menu The upper display line describes the parameter the lower line shows it s value Heas Bandwidth 164 kHz To set a new value press ED This changes to the editing mode signalled by a gt character in the first column Use the CD ke
38. meters each identified by a parameter name To set a certain parameter to a new value a message name value has to be sent to the receiver The receiver 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 recognized by the beacon receiver 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 receiver instead of a new parameter value a question mark is sent name The receiver replies the actual value in a complete message name value A complete list of the parameter the beacon receiver knows is shown later in this document in chapter Parameter list Below some common rules applying to the remote control message syntax are summarized 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 receiver recognizes 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 receiver replies the message SYNTAX e If the message syntax
39. nd as the receive frequency 2 Measuring the noise level at the band edge may falsify the result due to the LNB s band filter The measured noise level may be too low in this case 3 You should verify with a spectrum analyzer that no signal disturbs the noise measurement at the selected frequency Noise This parameter defines the interval at which the receiver inserts noise measurements in Measurement the C N modes The time is specified in seconds 3600 secs being one hour is a suitable Interval setting in most cases 3 4 Installation Parameters The page Setup contains the receiver s installation parameters Installation parameters are those which are assumed to be changed less frequently than the operational parameters on the Settings 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 receiver The receiver 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 edi
40. nd interface input The beacon RX does not demodulate any satellite because the satellite signals are sometimes CW signals but also very often modulated in FM or BPSK form Due to this fact the best implementation is a non coherent receiver which measures the input level in a user selectable defined bandwidth and provides this as a dB linear and calibrated analogue output voltage and digital information The level output is provided by three different and parallel available interface types a HTTP Web Interface via an internal Web Server a RS232 interface or the analog voltage output The sat nms beacon receiver is controlled remotely by a monitoring and control application through the TCP IP interface All communication with the power sensor is made with HTTP get requests The beacon receiver implements the Hypertext Transfer Protocol HTTP RFC 1945 both for the user interface and for the M amp C interface 9 1 Receiver Design The following block diagram shows the functional blocks of the sat nms L Band Beacon Receiver Analog Output fr 455 KHz Micro UE controller A EN a Hicro Fr ap HH hit OC Ptad 10 dB 70 dB Level Detector 30 dB A B 100 KHz AA 765 MHz L Band Synthesizer E Output Synthesizer 1 ae a t z 10 1715 2615 MHz 635 95000 MHz The L band input signal is applied to the SMA connector X1 The receive frequency range is from 950MHz to 2050MHz A small portion of the input signal is coupled out of the
41. o controller the appropriate bandwidth of 6 12 30 and 100KHz is selectable The 6 12 and 30KHz filters are ceramic filters the 100kHz filter is due to the high relative bandwidth a discrete filter with inductors and capacitors OP amps behind the filters are used to match the filters with the appropriate impedance and C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 26 32 SatService Gesellschaft fiir Kommunikationssysteme mbH are used to provide almost the same level as at the multiplexer input In a last gain stage the 455kHz signal is amplified to the appropriate level for the level detector The signal level is measured with an logarithmic amplifier This level detector has a very high dynamic range and is also very linear Output of the level detector is a D C voltage proportional to the L band input power This voltage is converted into a 16bit digital word by an analogue to digital converter with 16bit resolution A on board temperature sensor gives the beacon receiver M amp C board the knowledge about the temperature on the RF circuit board and allows fro temperature compensation D C input to the beacon receiver is 24V 0 5A provided by the M amp C board There are two D C D C converters on the board to convert the 24V D C into 6V for the analog 5V supply and the digital 3 3V 5V The digital D C voltage regulator provides a DC_ERROR signal which can be read back to the M amp C board The 2nd D C converter is use
42. r manufacturers antenna control units The analogue output voltage is generated in the microcontroller in digital form This does have the big advantage that all temperature linearity and slope compensation is also valid for the analogue output voltage Also the slope in dB V and the input level which generates OV analogue output voltage can be set via the web browser interface Via this connector other vendors antenna control units can receive their beacon level input signal as analog voltage connected to their analog to digital converter in the ACU The SMA connector was selected due to space reasons as a BNC did not fit on the interface side of the L Band beacon receiver housing This microcontroller controls also the synthesizer and the other hardware selections like bandwidth control The microcontroller does provide also a TCP IP Ethernet port and provides all necessary monitoring amp control data as web interface via HTTP protocol This allows an easy interfacing with the antenna control unit 5 2 Processing of Measured Values The logarithmic detector circuit outputs a dB proportional voltage to the A D converter Hence the measured ADC samples reflect directly the receiver s input power in dBm The readings however are subject to vary by temperature There is an absolute offset which changes with the temperature but also the dB to voltage relation slightly may change C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 27 32
43. r to avoid saturation effects in the receiver All input attenuator steps are calibrated the attenuation values are taken into account for the displayed receive level Available C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 12 32 SatService Gesellschaft f r Kommunikationssysteme mbH attenuator settings are 0 10 20 and 30 dB Measurement The receiver provides four different measurement bandwidth filters 6 12 30 and 100 Bandwidth kHz The 30 kHz filter is suitable for majority of cases Post detector The receiver s software applies a low pass filter to the measured level values This is filter much like the video filter at a spectrum analyzer Available bandwidth settings for this filter are 0 1 to 5 Hz in 1 2 5 steps Lower bandwidth settings make the reading more stable reduce the fluctuation Please keep in mind it will take a noticeable time until the level reading settles after an input level change with a very low bandwidth setting Spectrum With this parameter set to OFF the receiver s level reading is calibrated for a C W Compensation signal By selecting a modulation type for this parameter the level display gets compensated for the selected modulation type Alarm With this parameter you set the level threshold If the measured level falls below this Threshold value the receiver states a receive level fault To disable the level alarm set the threshold to a very low value e g 120 dBm Pleas
44. rameter list The table below shows the complete list of M amp C parameters the beacon receiver knows For each C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 21 32 SatService Gesellschaft fiir Kommunikationssysteme mbH parameter the valid range and a short description is given ame range uni description o adc vo 065535 rad ae addr ABCDEFG Communication address NONE am 0102030 dB faremos bgn OFFON Background actives noo frequency vacio inhibit c2n0 C NO ratio in 1Hz only valid in C N modes 040000000 Me cnmi 1 2100 sec Noise measurement interval cton ro 0 99 dB C N ratio only valid in C N modes cnm Noise measurement frequency Hz sec daco u 200 0 dB Analog output offset dacs A 5 0 5 0 V dB Analog output scale dflt OK FAULT D C supply fault sec Display refresh rate Hz 3 Hz ec D ga Frequency tracking fault u loro20s 25 Frequency tracking offset depends on LO MHz RF receive frequency settings f 1 21600 Frequency tracking interval fk Joron Frequency mackingmode tap oo fox Frequency acting progres OO few 10 1000 Kia Frequency tig OOo m2 oronavro amete OO Inbv OFF 14V 18V LNB voltage AUTO lof1 40000 000 MHz Low band LO frequency negative values indicate LO gt RF 40000 000 frequency lof2 40000 000 MHz High band LO frequency negative values indicate LO gt RF 40000 000 frequency mod OFFNCNO
45. sat nms LBRX L Band Beacon Receiver User Manual Version 2 0 2011 11 10 Copyright SatService Gesellschaft fiir 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 fiir Kommunikationssysteme mbH Table Of Contents Table OL COMENTS ins l ME era Me 3 PN ERS ea RN 5 ZI Abe TST MC One ee see 5 22S IP Address een 5 23 COMME Cine the Receiver oori era AA A A AA 7 HA CORSO he Receiver zentraler 8 23 Me cnanicalinsta la ia use 9 20 NS ans PROS ion 9 on A y PP rn 11 zr The Web based User mera iii 11 3 2 Displayed Read158 ati iia teneis 11 33 Operational Parameters y A A AA AAA A A DA 12 3 4 Installation Parame es aan esse 14 3 3 Erontpanel Operation AA II AA AAA R 15 39 1 NOS PLAY Mode tek sate ee nee ee ee ee 16 AP oo 17 39 3 Edilins Numerie Parameter sarita seele 18 3 5 4 Edine Multiple Choice Parameters pta A A Aaa 18 33 Manual Step UA ea 18 SA Vee essen 18 AND ori AE RR 19 A General Command A A sb 20 4 2 ne CPAP remote contol tea ea eu A 20 AO ne RS52 2 Temo Control Miet ae ee ei 21 4 4 Parameter IS ae ae wenns 21 4 3 One Ine read via TCP IP essen 23 OU DEI a ee een Ba tet 23 A Novella Protocol emula ii loli 24 gt Te Ory Of Opera LOA ice 26 DA AU Cl LIC SIO see OO van enamel ee nennen 26 3 2 Processing OL Meas urea Y ales acct tiered rear E ana sa tendtuter
46. t the J1 connector may be programmed to act either as a level alarm the circuit opens if the receive level falls below a adjustable level or as a frequency tracking alarm The latter indicates that the frequency tracking function does not recognize a trackable signal This is much like the lock alarm of a coherent receiver 2 5 Mechanical installation The receiver enclosure is DIN rail mountable Hence simply snap the receiver on to the rail to fix it For plain wall mount fix a 270 mm piece of DIN rail at the wall with at least two screws and lock the receiver on this When planning the mechanical installation of the receiver please consider that the connectors are placed at the front sides of the enclosure Depending on the flexibility of the cables you are going to use you will require about 10 centimeters space for cabling on both sides of the receiver 2 6 The sat nms LBRX19 Connecting the sat nms LBRX19 The sat nms LBRX19 provides an integrated multiswitch which allows the beacon receiver via its input frequency and polarization parameters the selection of the corresponding LNC The input connectors are named J8 1 J8 4 The other connectors J1 J5 are labeled and used the same way as in the DIN rail mountable LBRX LNC High Band Input LHC Low Band Input RF in 950 2050hHz2 oS Ta Ed a 0 84 50 60 He o hlodel sat nms LBRX 19 rear view of the sat nms LBRX19 Using the sat nms LBRX19 without the integrated Mul
47. ted The table below lists the settings provided by this page Parameter Description Name LNB voltage This parameter controls the LNB supply voltage provided by the receiver at it s input connector The following settings are available OFF The D C voltage is completely switched off 14V The LNB supply voltage is 14V 18V The LNB supply voltage is 18V AUTO The LNB supply voltage is switched on the voltage depends on the Polarization parameter available on the Settings page The voltage is 14V for vertical polarization 18V for horizontal polarization 22KHz Tone This parameter controls the presence of a 22 kHz tone on the LNB supply voltage The following settings are available OFF The 22 kHz tone is switched OFF ON The 22 kHz tone is switched ON The receiver automatically enables the 22 kHz tone depending on the receive frequency set The tone is switched OFF for frequencies below the band edge switched ON for frequencies above the band edge The band edge is set with the Band edge parameter below High band LO This parameter sets the conversion LO frequency frequency for the upper frequency frequency band LNC Common values for this frequency are 11300 MHz or 10600 MHz for consumer antennas Set this value to zero if you intend to set the receive frequency in terms of L band frequency Normally the receiver assumes that the LO is below the RF receive frequency as this is common for Ku band LNCs If the LO is above abov
48. the browser The beacon receiver should reply with it s main page provided that the receiver and your computer are configured for the same subnet 2 3 Connecting the Receiver The connectors of the receiver are placed on both sides One side contains the D C and Data connectors the other side the RF connectors When you connect the receiver please consider the following e The fault relays at J1 are Photo MOS solid state circuits In fault state or while the unit is powered off they are in hi Z state several MOhms A resistance below 25 Ohms indicates that the function is OK e J2 is the Ethernet 10Base T RJ45 connector Use a standard network cable to connect the receiver to an Ethernet hub If you want to connect your computer and the receiver directly without using a hub you need a crossover cable for this with swapped RX TX lines e J3 is a standard 9 pin RS232 DCE connector You may use a direct 9 pin cable to connect a PC to the beacon receiver The RTS CTS and the DTR DSR lines are bridged in the receiver to simulate hardware handshaking They need however not to be connected if you want to use a 3 wire cable e The RF input J5 may be configured to power a LNB If you intend to connect the receiver to a signal source which may not be able to withstand the LNB supply voltage be sure to switch off the LNB supply at the receiver by means of the web based user interface before you connect the receiver input D C and data connectors
49. tiswitch For using the sat nms LBRX19 without the integrated Multiswitch you feed the beacon Signal via an SMA C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 9 32 SatService Gesellschaft fiir Kommunikationssysteme mbH connector to J5 Loop In The LBRX19 provides in this case the possibility to control an external switch via 14 18V Signal and 22 kHz Tone on off or just to supply voltage to an LNC Using the integrated Multiswitch If you like to use the integrated Multiswitch connect the LNCs with F type connectors as follows N Low Band 11GHz vertical Low Band horizontal J8 2 High Band 12GHz vertical High Band horizontal J5 Loop In and J7 Loop Out have to be connected via the corresponding SMA SMA semi rigid cable If you like the sat nms LBRX19 to switch automatically to the LNC the parameters LNB voltage and 22kHz Tone on the Settings page have to be set to AUTO The parameter High band LO frequency Low band LO frequency and Band edge have to be configured as well to allow the LBRX19 the automatic switching between the different LNCs For a standard LNC we recommend the following settings A A A A A A A A A A A A A A A A A eo A A A A A A A A A A A A A A AAA 4 E Mains input LBRX Board Ji Alarm ee ne J2 LAN RIF input E qu Serial RIF output 0T out s Sa J3 Loop In J Loop Gut r l l l l l l l l l l l l l l l l
50. tring Hence if the beacon receiver is configured to make plain level measurements the UDP datagrams contain something like 65 33 which represents the measured C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 23 32 SatService Gesellschaft f r Kommunikationssysteme mbH level in dBm In C No mode the C No values is contained in the UDP datagram e g 12 33 for this dBHz value UDP datagrams are sent each time the beacon receiver measures the input level During frequency track or while it performs a noise reference measurement the beacon receiver pauses sending UDP datagrams Configuration To use the UDP feature enter a valid IP address to the UDP destination address field at the Setup page or set this parameter from remore with the udpa remote parameter If you want to use the beacon receiver together with a sat nms ACU ODM set this parameter to the IP address of the ACU The beacon receiver starts to send UDP datagrams as soon as it receives a valid destination IP address To stop the UDP distribution set the destination address value to none Beside definite IP addresses the beacon receiver also accepts UDP broadcast masks for the UDP destination address parameter In this case the beacon receiver sends the datagrams as UPD broadcasts multiple clients may receive the measurement value in this mode When usinf UDP broadcasts you should consider the following e Other computers in the same network whic
51. ver 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 receiver is mostly self explanatory Nevertheless the Operation chapter outlines the map of web pages which make up the LBRX user interface and elaborately describes the meaning of each alterable parameter e Remote Control The LBRX beacon receiver provides a versatile remote control interface A monitoring amp control software may fully operate the receiver either through a TCP IP network connection or through the RS232 interface of the receiver This chapter describes the communication protocol used for remote control and lists all parameters accessible through the remote interface e Theory of Operation This chapter gives a short overview how the receiver works This not only includes a description of the receiver s electronic concept and the methods of temperature or frequency response compensation implemented in it It also describes the the algorithms which implement the frequency tracking and noise measurement functions of this device Knowing about the theory regarding this functions helps to find the best parameter settings for a given application e Specifications At the end of the document the specifications applicable to the sat nms LBRX beacon receiver are summarized in this chapter Support and Assistance C 2013 SatService GmbH ww
52. w satnms com LBRX UM 1301 Page 3 32 SatService Gesellschaft fiir Kommunikationssysteme mbH If you need any assistance regarding our LBRX beacon receiver 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 E sainms support satservicegmbh de C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 4 32 SatService Gesellschaft f r Kommunikationssysteme mbH 2 Installation This chapter describes how to install the sat nms LBRX beacon receiver You find a guide how to connect configure and mechanically mount the receiver below Before you start please first read the Safety Instructions chapter below It contains some important recommendations to prevent damage from the receiver Then we strongly recommend to do a first setup of the receiver on a lab desk before installing it at it s final location This is mainly for two reasons 1 To setup the receiver s IP parameters the PC used for configuring and the receiver 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 intelligent network switches 2 The receiver may be configured to inject a 14 18V power supply voltage at it s RF input If you plan to connect the receiver to a signal source which is not able
53. wn if the LNB voltage is configured for polarization selection While the receiver is not in a regular state the lower line of the display shows a message indicating this The ordinary contents of the display and the message are shown alternately the message blinks on the display The following messages may be displayed x SUPPLY FAULT There is a problem with the power supply of the receiver hardware fault SYHTH FAULT One of the receiver s frequency synthesizers does not lock hardware fault X SEARCHING gt The receiver had lost the signal is actually searching it THRESH FAULT The measurement value is below the threshold defined in the settings 24 TRACE IHG gt gt The receiver actually performs a frequency tracking The measurement C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 16 32 SatService Gesellschaft f r Kommunikationssysteme mbH value appears frozen during this procedure FTRACK FAULT The receiver failed to optimize the receive frequency probably due to a bad C N If more then one of the above conditions occur only that one with the highest precedence is shown This means for example that the SEARCHING state precedes over the THRESH FAULT which caused the receiver to search the signal For a detailed fault report see chapter 3 5 6 Fault Display Instead of showing the receive frequency the lower display line may be set to display more parameters Use the
54. ys to change the value Mess Bandwidth 12 kHz To accept the changed value press ED Pressing leaves the editing mode without changing the value 3 5 5 Manual Step Tuning The step tuning page lets you adjust the receive frequency with the arrow keys while watching the receive level From the main menu select STEP TUNE and press to enter this mode The display shows the receive level live updated and the actual receive frequency The CG keys change the frequency in steps of 1 kHz the keys perform 10 kHz steps LEY 74 45 dEm 2345 679 MHz If you leave the step tune page by pressing G9 the receiver reverts it s receive frequency to the value prior to the adjustment To keep the adjusted value as the new receive frequency press CE 3 5 6 Fault Display C 2013 SatService GmbH www satnms com LBRX UM 1301 Page 18 32 SatService Gesellschaft f r Kommunikationssysteme mbH The fault display page lets you view the actual state of all fault flags and also the latches state of these flags FET IES Ew FI LAT DE SY Lu FT From the main menu select FAULTS and press to see the faults display The upper line shows the momentary active fault conditions the lower line the latched faults Active faults are represented by a 2 character memnotic inactive faults by dashes DC There is a problem with the power supply of the receiver hardware fault SY One of the receiver s frequency synthesizers does not lock har
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