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User Manual go2RECORD - HIK

1. Daily recording start automatically each day at above times Lack recording protect From automatic deletion o Add to scheduler Figure 28 Recording Scheduler The recording scheduler GUI features the following controls Function Scheduled recordings table This table displays a list of all scheduled recordings including the ones already fin ished or erroneous ones Generally there are three different states Finished The application was able to make the recording Pending The recording is scheduled in the future Error The recording cannot be started lt Delete all listed gt This button serves to delete all listed scheduler entries lt Delete gt This button serves to delete the selected item iy Filter This checkbox is used to filter the content of the scheduled recordings table Table 10 Recorder Scheduler Controls To add a scheduled recording use the following settings Item Function Begin and These spin boxes determines the begin and end times of the planned recording End time Duration The duration of the recording is displayed and can be edited in this spin box 20 e Real Time Monitoring amp Recording User Manual go2RECORD go2RECORD Item Function lt Now gt Use this button to set the begin and end times to the current time Use receiver This drop down list box permits to select a specific receiver which is to make the scheduled re cording On selection of any receiver t
2. Cursor Zoom range Zoom in zoom out E Immediate mouse zoom e Move ey Magnifier M Overview TI Create signal from selection HE Create signal From cursor position w Show signal markers w Show channel limits Frequency time Provided the X and Z cursors are active use these cursors to select exactly the part of the cursor spectrogram to be used to create the new signal On choosing the item Create signal from cursor position on the context menu a new signal will be created and appear in the list The name of the new signal will be automatically generated in the form of Signal lt ID gt Cursor Zoom range Zoom in Zoom out EA Immediate mouse zoom ay Move ey Magnifier DE Overview Create signal from selection Tr Create signal From cursor position w Show signal markers w Show channel limits Table 15 New Signal Creation Functions The new signal will automatically be created with a group membership in the group selected in the Current group list box for details see chapter Filtering the Signal List Editing the Signal List On clicking a signal entry in the signal list the signal s detailed properties will be displayed below the list User Manual go2RECORD Recording Management amp Analysis e 29 SS go2g RECORD Signal details Description Voice 3 Center Frequency 131 450 246 0 Hz gt Bandwidth 5722 963H2 7 Start Time 27 01 10 13 36 57 273 gt Stop Time 27 01 10 13 37 15 694
3. Analysis User Manual go2RECORD go2RECORD Description Frequency kHz Bandwidth Hz Group Duration s Signal 2 131528 78 96465 0 3 Signal 3 131524 44 20252 0 2 Signal 1 133833 55 6883 5 1 OF SEA Pim mim ele 12674n Sonagram magnifier E ic Sonagram overview 13 36 40 000 13 37 20 000 13 37 00 000 13 37 21 000 13 37 20 000 13 37 22 000 13 37 40 000 13 37 23 000 d 13 38 00 000 13 37 24 000 AEE ASE e ERGIT 12500000 130000000 135000000 AR da 132350000 132400000 132450000 i Figure 37 Magnifier and Overview Windows The Overview window always displays the complete recording On selecting part of the overview spectro gram with the mouse the main offline spectrogram will zoom in or out to display exactly that part of the recording The Magnifier window always displays a small part of the main offline spectrogram On selecting part of the spectrogram in its main offline spectrogram with the mouse the Magnifier spectrogram will display the part magnified Selecting and Organizing Signals of Interest Signals of interest are highlighted directly in the offline spectrogram with the mouse pointer or more accu rately using frequency time cursors The highlighted signal is inserted into the signal list together with its parameters such as center frequency bandwidth and time The complete management of selected signals and groups is accommodated on the lt Signals gt tab next to the offline spectrog
4. Starting and Stopping the Recording rss 18 Recording Scheduler rra 19 Creating and Using Real Time Narrowband Channels 21 Creating Moving and Deleting Real Time Channels 22 Audio Demodulation and Playback of Real Time Channels 23 Streaming Real Time Channels i YYYY YY Y YHA AAA LILI LL LL LLW FL nno 23 Recording Management amp Analysis 25 Browsing and Managing Recordings rss 25 Opening See el ue EE 26 Deleting Hecordmgs rss 26 Displaying and Analyzing Single Recordings rra 26 Using Magnifier and OvervieW ss 26 Selecting and Organizing Signals of Ita 27 Creating New Signals rss 28 Editing the Signal List rss 29 Filtering the Signal Uet A LAI LLA LA ILL LL AW LL nuuuun 30 Managing Signal Groups ss 30 Extracting Signals from Hecorcdhmg nennen 31 User Manual go2RECORD Contents e iii Oe go2RECORD SAS AC Gela ea 31 EXDOMMING Signals to RO e 32 importing Existing Eet LEE 33 Glossary of Terms 37 List of Figures 43 List of Tables 44 Index 45 iv e Contents User Manual go2RECORD go2RECORD Introduction Revisions Release Date Editor History 09 2013 06 14 Spectrogram Display first level chapter go2RECORD is an application for recording and analysis of digital wideband radio signals This document provides a brief overall introduction as well as detailed instructions for controlling the system through its graphical user inte
5. red The labels on the time axis Z axis display the signal time UTC In the instantaneous spectrum graphics the signal energy is displayed in the spectrum on the logarithmic scale dBFS units 0 dB corresponds to full gain and 100 dB means 100 dB attenuation The spectrogram display provides various features for navigation and measurements in the displayed spectrum data These features are described in detail in the following chapters User Manual go2RECORD Displaying and Analyzing the Spectrum e 9 S go2RECORD Scrollbars The display window features a scrollbar each in frequency direction and in time direction provided the signal exceeds the display section In addition to the common drag functions there are several keyboard shortcuts for scrollbar operations Shortcut Function Table 1 Spectrogram Scrollbar Shortcuts Zoom Functions The spectrogram display is equipped with convenient zoom functions for quick navigation and analysis The default zoom factor is 2 or its reciprocal in opposite direction respectively Custom zoom factors can be set on the display s property sheet on the lt Extras gt tab spin box Relative factor Item Function lt Ctrl gt Mouse Wheel Zoom in out no cursors activated lt gt Zoom in With enabled cursors the keyboard shortcut lt gt permits to graphically zoom into the area delimited by the cursors With disabled cursors the zoom enlarges the area by factor each ti
6. 000 MHz 9 500 MHz be 9 500 MHz 10 000 MHz i SED ha 10 000 MHz 10 500 MHz i el 10 500 MHz 11 000 MHz llllpBrs400 192 168 0 52 11 000 MHz 13 000 MHz j O 11 000 MHz 11 500 MHz e O 11 500 MHz 12 000 MHz Receiver settings 10 000 MHz Frequency Bandwidth 2 000 MHz Step up to frequency 100 000 MHz gt Step time interval Start stepping 30s e Panorama From 100 000 MHz Start panorama Panorama to 500 000 MHz gt Start Stop recording End Manually V End time 16 11 11 13 24 34 859 Duration 10 min C Loop recording Duration 60 min C Lock recording protect from automatic deletion Activity v GERERE I giz Figure 21 Real Time Monitoring amp Recording Tab Real Time Monitoring amp Recording e 15 go2RECORD 2 MHz and NI PXI 5661 HF VUHF max bandwidth 20MHz The physical receiver configuration is pre configured in the server and cannot be changed via the GUI software Once the GUI has been started and the connection to the server is established the current receiver con figuration appears in a Receivers and channels tree view on the Spectrum amp Recording gt tab The screenshot below shows an example configuration with two DBT 5400 receivers and one IZT R3xxx re ceiver Available channels Te Ill pgrsa4nn 122 158 0 51 5 000 MHz 7 000 MHz 5 000 MHz 5 500 MHz Lei OD MHz 6 000 MHz O 6 000 MHz 6 500 MHz Ll b
7. 10000000 10200000 10400000 10600000 10800000 Hz QOQ Server Connection Connected 127 0 0 1 25027 Bannann 32 Se Figure 3 Graphical User Interface Operation Select Receiver Select the desired receiver in the list of available receivers on the Real Time Monitoring amp Recording tab Recording and mocibaring ein Spec ZAK arada Begire dhamal GOO Curea Eden Avaispie ETSE zr El OS TS400 i22 258 051 0 000 11 000 MO E ebook 9 500 MHz id Si EI dun wt 11 000 MHz Ll llloerz4no 192 558 0 52 7 000 MHr 9 000 MHz SET ll inl C inl C id z Ll zr EZK 30 043 53 hin connection id Figure 4 Receiver Selection The receiver s real time signal is visualized in the wideband spectrum spectrogram and instantaneous spectrum The context menu and the property sheet provide access to the desired functions and parame ters 4 e Quick Start User Manual go2RECORD Specify Frequency or Bandwidth Option Receiver settings Frequency 10 000 MHz Bandwidth 2 000 MHz E Set receiver Figure 5 Receiver Frequency Settings go2RECORD If need be specify the desired receiver frequency and bandwidth for the selected receiver in the group box Receiver settings not supported by every receiver Select Channels Select the channels to be recorded from the list of available channels Available channels e Ill pgrs400 192 168
8. curve Table 5 Spectrogram Display Parameters Cursors amp Cursar Y Cursor 2 Cursor 2e Cursor mode Number 20 T ni Llr on YLUrsor Cursor OO ODOL 00 Hz 123 75 dB E Cursor 10 193 799 00 Hz 91 25 dB E Difference 693 799 00 Hz 32 50 dB In diff D 001434 ms ZL ursnr Cursar1 21 04 10 12 50 47 718 Cursorz 21 04 10 12 50 53 224 Difference 00 00 05 506 Inv diff 0 182 Hz zoom in zoom out Figure 19 Cursor Tab The lt Cursor gt tab accommodates all functions related to cursor operations except for the relative zoom factor setting User Manual go2RECORD Displaying and Analyzing the Spectrum e 13 go2RECORD Extras Den pea TT M Spectrum 9 Normal O At Cursor 1 O Average value Cur 1 2 GOOD Relative Factor d Figure 20 Extras Tab The lt Extras gt tab features additional options with regard to the display type The list box Display serves to select the color schemes for the displays Color Scheme Foreground Color Background Color Table 6 Color Schemes Additionally the lt Extras gt tab has a group box Spectrum which is inactive unless the Z cursors are ena bled Specify whether you wish to display the spectrum Spectrum Display Usually averaged exponentially At Cursor 1 Exactly at the position of Cursor1 Average value Cur 1 2 Averaged between the two cursors Table 7 Spectrum Display The grou
9. gt Comment Group Voice v Actions Bre PEL See H Ere Figure 39 Signal List Details If desired edit the signal name Description frequency time and bandwidth Furthermore add a text comment and define or edit the signal s group membership All changes of the signal properties will be immediately displayed in both the spectrogram and the signal list This allows for fine adjustment of the signal properties with immediate visual feedback in the spectrogram Filtering the Signal List Many signal operations such as streaming or exporting can be performed on all signals from a signal list Therefore it is important to have filtering tools which can affect the list content and order of signals in the list For this purpose the following controls are available in the filter bar above the list Item Function Current group This list box defines whether only the signals belonging to a certain group will be visi ble in the list Choose All to see all signals Recording specific This list box determines the order of the signals in the list Sort either by the start time groups of the signal or by the signal name Description M List visible only If this checkbox is selected only signals currently visible in the spectrogram will be displayed in the list This allows for exact filtering based on a frequency time range by using the spectrogram as selection tool Table 16 Signal List Filtering Parameters Managing Signal Gr
10. to be extracted and streamed Play all listed signals This option will extract all signals currently visible in the list exactly in the list order Each signal will be streamed with its specific time information and bandwidth Play in loop This option will cause endless extraction and streaming by repeating the whole pro cess each time the last signal has been extracted and streamed Play as USB AM LSB FM If one of these options is selected the extracted signal will be streamed to the GUI audio demodulated with a selected demodulator and played back for listening This feature is Supported only up to a recording bandwidth of 2 MHz Play with external This option will enable the optional signal analysis software to receive streamed data To use this feature signal source settings has to be setup properly in the signal anal ysis software Go to the signal analysis software s Options dialogue box menu Extras Options and enter the IP address of the server computer in the group box Signal source on the Network tab If questions occur contact your system administrator for the exact value In the Channel box enter the value 1 Options Network Record demod output Sound configuration Signal processing APC IP 127 0 UI Port 43153 Signal source IP 192 168 6 200 Port 60201 Channel om On closing the Options dialog box and pressing the button Play
11. 0 51 5 000 MHz 7 000 MHz Pe ig 5 000 MHz 5 500 MHz pe ig 5 500 MHz 6 000 MHz H L1 6 000 MHz 6 500 MHz D Me GOO MHz 7 000 MHz 3 O MDBTS400 192 168 0 52 H O 7 000 MHz 7 500 MHz L1 7 500 MHz 8 000 MHz H O 8 000 MHz 8 500 MHz D 8 500 MHz 9 000 MHz 7 000 MHz 9 000 MHz m HIS R3XXX 10 0 0 53 No connection jer lano connection Figure 6 Channel Selection Please bear in mind that only adjacent channels can be selected Channels with a disabled disk symbol cannot be selected Start Stop Recording 16 11 11 13 24 34 859 10 min Start Stop recording End Manually End time Duration d Loop recording Duration Lock recording O Record now W Stop active recording 60 min protect from automatic deletion Figure 7 Recording Control After selection of the channels use the controls and list boxes in the group box Start stop recording to make your recordings Open Recording Open the lt Record Management amp Analysis gt tab Open the desired recording from the list of recordings via double click or via the context menu User Manual go2RECORD Quick Start e 5 A go2RECORD Brtiemons Grawervas Lopes stanton Modua Center Frequeecy LAE Br na unusso S Rat Tre Se fee 2201 10 DRE 2 GOO Server Connection Connected N72 0 3 25027 Ges e Figure 8 Reco
12. 13 FOUS O MIEL m UN 14 Figure 21 Real Time Monitoring amp Recording TSE 15 Figure 22 Receivers and Channels Tree View rss 16 Figure 23 Receiver dl Le i r 16 Figure 24 Frequency Stepping Geitmgs sa 17 Figure 25 Panorama Settings EE 17 Figure 26 Receivers and Channels Tree View ss 18 Figure 27 Recording Control and Status Pane rra 18 Figure 28 Recording Scheduler sa 20 Figure 29 Real Time Channels D 3D EE 21 Figure 30 Real Time Channel in Spectrogram View ss 22 Figure 31 Audio Demodulation Context Menu rss 23 Figure 32 Real Time Channel with Audio Demodulation Highlighted sese 23 Figure 33 Audio Squelch Level COM te UE 23 Figure 34 Signal Source Settings ss 24 Figure 35 Recording Management amp Analysis IGB 25 xs dekie bez OF nico o ERE E ENT 26 Figure 37 Magnifier and Overview Windows sa 27 Figure 36 Signals TaD EE 28 Fig re 39 Signal List RT UE 30 Figure 40 Play Button Context Menu rss 32 Figure 41 Export Button Context MOTU rss 33 Figure 42 File Import Dialog VW mdow rss 34 User Manual go2RECORD List of Figures e 43 ZE go2RECORD List of Tables Table 1 Spectrogram Scrollbar Shortcuts rss 10 Table 2 Spectrogram Zoom B dale dala 10 Table 3 Spectrogram Display Functions rss 11 Table 4 Spectrogram Display Keyboard Shortcuts rss 12 Table 5 Spectrogram Display Parameters ss 13 Ho 32e odisti ME m FFF FT HD 14 AIS 7 SSC TUT IS na E T UU 14 Table 8 F
13. 251 96 20864 12 6 Signal 2 9677 35 13413 5 6 Signal 3 9935 92 14903 3 9 EA Add new group E Edit default groups x Delete all listed signals Signal details Description Signal 3 Center Frequency 9 935 017 0Hz gt Bandwidth 14903 168 Hz Start Time 20 09 10 07 18 27 029 Stop Time 20 09 10 07 18 30 883 Comment Group No group M Actions D Play s fed Export s m stop 0 Jet 81 e Figure 35 Recording Management amp Analysis Tab cordings together with some basic information about each recording and its current state User Manual go2RECORD Recording Management amp Analysis e 25 cy go2RECORD Recordings Date Start Time End Time Duration Frequency Range State Information syv mm dd hh mm ss hh mm ss hh mm ss 222 MHz 2010 01 27 3 38 17 00 01 41 115 122 3 2010 01 28 10 53 29 10 54 43 00 01 13 861 122 000 138 000 OOo 4 2010 04 21 14 45 28 14 45 49 00 00 21 504 9 000 11 000 MOE Recorder running Figure 36 List of Recordings The recording state is signaled by color coded icons in the State column of the table Color Recording State The recording is completed and can be opened for analysis The recording process is currently running The actual recording cannot yet be opened or used em An error has been detected in this recording An error description will be displayed in the nformation col umn Table 14 Recording State Color Cod
14. 68 0 51 3 000 MHz 11 000 MHz i Channel 4 f 10500 000 kHz Port 60204 e Channel 1 f 10000 000 kHz Port 60201 BE IE pgT5400 182 168 0 52 7 000 MHz 9 000 MHz i gt Channel 3 f 8500 000 kHz Port 60203 du Channel 2 f 8000 000 kHz Port 60202 IZT R3XXx 10 0 0 53 Mo connection dh Add new channel 3 Delete all channels J 81 dB Audio squelch level Status annel I changed E 6084 896 kHz Part 60201 Channel 1 changed E 6074 309 kHz Port 60201 Channel 1 changed E 6075 197 kHz Port 60201 Real time channel deleted nat in the receiver Frequency range Channel 1 deleted F 6075 19 kHz Pork 60201 Real time channel deleted nat in the receiver Frequency range Channel 2 changed F 7218 700 kHz Port 60202 d Figure 29 Real Time Channels Tab The upper pane displays a list of all the receivers in the system with their corresponding active real time channels Each channel in the list is represented by its automatically generated unique name Channel 1 Channel 2 its frequency and a streaming network port In addition to displaying the real time channels in the list the channels are also displayed graphically in the real time spectrogram view User Manual go2RECORD Real Time Monitoring amp Recording e 21 S go2RECORD Figure 30 Real Time Channel in Spectrogram View Double clicking on a real time channel item in the list will zoom in the spectrogram view
15. Analysis This part of the user interface controls all functions for management and analysis of existing recordings as well as extraction of the signals of interest from the wideband recordings File Server Service Help E Real time Monitoring amp Recording 07 18 16 000 07 18 16 000 07 18 20 000 07 18 22 000 07 18 24 000 07 18 26 000 07 18 28 000 07 18 30 000 07 18 32 000 dBF5 80 90 100 110 120 130 4 140 7 9000000 Recordings ID ate 5609 2010 10 26 5599 2010 09 20 5598 2010 09 17 5597 2010 09 17 SSAA n1n na 16 lt 9100000 D yvyy mm dd a Recording Management amp Analysis Start Time hh mm ss 08 53 46 07 18 14 12 50 27 12 45 07 IEN 9200000 9300000 End Time hh mm ss 08 53 55 07 18 32 12 51 27 12 45 30 17 57 04 9400000 Duration hh mm ss zzz 00 00 09 720 00 00 18 224 00 01 00 000 00 00 23 544 nn nt 14 15a 9500000 OOO Server Connection Connected 127 0 0 1 25027 Browsing and Managing Recordings The lower left part of the Recording Management amp Analysis view displays a table listing the existing re 9800000 State Lock Information GOO 8 EKO Recording management and display settings Record 5599 Signals Parameters Cursor Extras Current group A v Sort by Time v C List visible only Description Frequency kHz Bandwidth Hz Group Duration s Signal 4 9058 87 16393 4 1 Signal 1 9
16. M audio Export all listed signals multiple Files Play as LSB audio Export all listed signals single File Play as FM audio Play as FM audio 200kKHz w Play with PROCEED Generate File names automatically Open exported Files in PROCEED Figure 11 Signal Export Settings On the left of each of these buttons there is a down arrow symbol to open a context menu featuring dif ferent menu items to influence the button behavior Create Real Time Channels If desired switch to the lt Real Time Monitoring amp Recording tab in order to create narrowband channels using the context menu in the spectrogram or use the button Add new channel on the Real time channels tab Create Real time channel From blue cursor X1 Create Real time channel From red cursor X2 Figure 12 Real Time Channel Creation Settings A dialogue box for manual entry of the desired channel frequency is displayed The frequency entered must be within the frequency range of at least one of system s receivers New channels will always be created with a predefined default bandwidth of 20 kHz for DBT 5400 or 25 kHz for the IZT receiver Add new Real time channel Channel frequency 8284 578 kHz 7 Figure 13 Real Time Channel Addition Settings Audio Demodulation If desired demodulate and play back one or several real time channels simultaneously each with differ ent parameters Audio output of all demodulated channels will be mixed and replayed b
17. User Manual go2RECORD by PLATH AG Switzerland ZE go2RECORD D go2 RECORD Imprint PLATH AG Stauffacherstrasse 65 CH 3014 Bern Phone 41 311 6446 www go2signals ch info go2signals ch All brand names in this document are trademarks or registered trademarks of their owners 2013 PLATH AG All rights including those for translation reserved Reproduction in whole or in part in any form is prohibit ed without written consent of the copyright owner Specifications are subject to change All rights reserved Printed 5 August 2013 S go2RECORD Introduction 1 nici M 1 CORNU ANO ere enen E EE TE 1 FS LU fum FF YRR YN CN FA Y NW FN NF Y YN RYDAN 2 SIB erleie sit m 2 Quick Start 3 Receiver Configuration sa 3 Graphical User Interface ss 3 Scu E Seen 4 Displaying and Analyzing the Spectrum 9 COMO GN eege eege Een 10 ZOOM FUNCOMS EE 10 Context MENU ss 10 Keyboard Shortcuts sa 11 Parameter Setting ss 12 SUI 13 Ee 14 Real Time Monitoring amp Recording 15 selecting and Controlling the Wideband Receiver s assa 15 Setting the Receiver Frequency and Bandwidth 16 Advanced Receiver Control Functions Option 17 Recording Wideband Gonals nennen 17 Choosing Receiver Channels for Hecordmg Y innnnruo 18
18. al antenna sys tems and to close to line of sight links in case of directional antennas XSLT XSLT Extensible Stylesheet Language Transformations is a language for transforming XML documents into other XML documents or other objects such as HTML for web pages etc The original document is not changed rather a new document is created based on the content of an ex isting one 40 e Glossary of Terms User Manual go2RECORD go2RECORD User Manual go2RECORD Glossary of Terms e 41 go2RECORD List of Figures Figure 1 Configuration Sue 2 PICU el GIA Teg ERROR NA N 2 Figure 3 Graphical SA idar la 4 Figure 4 RECeiver S ClO CON EA 4 Figure 5 Receiver Frequency Geitmges raa 5 Fig re 6 Channel eji e ERNEUT utm 5 Foe 7 ege ue CONTO PEERS 5 Fig re 8 Recording Belda ai MEER ET M 6 left SIGMA bidee ela RE 6 EAE EIN E 6 Figure 11 Signal Export Settings ss 7 Figure 12 Real Time Channel Creation Settings rra 7 Figure 13 Real Time Channel Addition Settings rra 7 Figure 14 Audio Demodulator Control Settings rrua 7 Figure 15 Audio Squelch Level Settings cccccccssesescccceeceeaeeseecceeeeeeeeeeeeeeceeeeessueeseeeeeeeessseaaeeeeeeeessesaageess 8 Figure 16 Spectrogram Display rss 9 Figure 17 Spectrogram Display Context Menu assa 11 Fio re 18 Parameters Pala TN EO E Oo Omm 12 Elei dei iet E
19. als to a lower sampling rate DDL The Decoder Description Language is a programming language developed by Procitec for the easy im plementation of modems A compiler converts the source code into binary intermediate code which is in terpreted by the application DHCP The Dynamic Host Configuration Protocol DHCP is a network protocol used to configure devices that are connected to a network known as hosts so they can communicate on that network using the Internet Protocol IP It involves clients and a server operating in a client server model FEC The Forward Error Correcting code is a method to increase the reliability of data exchange Additional da ta is appended to the original data which can be used to correct data if they are partly corrupted This technique is applied in cases where there is no channel for back reporting e g in a broadcast situation It is used as well in situations where the switch over and retransmission time by far exceeds the time to generate transfer and evaluate the correction code deep space communication FFT The Fast Fourier Transformation is a variant of the Fourier transformation This is a method to convert da ta between time and frequency domain Data are sampled in the time domain in many applications they are transformed into the frequency domain for further processing 38 e Glossary of Terms User Manual go2RECORD D go2 RECORD The DFT is the discrete variant of the Fourier tran
20. and signal in the Real Time Monitoring amp Recording part of the GUI the application will not be able to generate any spectrum information for imported recordings until the monitor has been stopped for performance reasons In that case a warning is displayed before proceed ing with the import process The File Import dialogue window serves to select the signal files to import as well as various import op tions User Manual go2RECORD Recording Management amp Analysis e 33 go2RECORD file import Settings Channel count user defined signal time Channel bandwidth eet 0 En use File bandwidth First channel Frequency eet D to use File Frequencies Files to import Channel 1 k HF Test wavy Add Files Clear Stop import Start import Import started recording ID 13 Figure 42 File Import Dialog Window Channel count This spin box defines the number of channels to be imported Only signal files contain ing multiple channels with consecutive frequency ranges can be imported as a single recording M User defined signal Check box and Date Time edit field serve to define a specific signal time for the begin time ning of the signal If this option is not used check box not selected the application will try to extract the time from the signal file itself usually a file creation date time see chapter Editing the Signal Li Channel bandwidth This field can be optionally used to define the effective bandwi
21. ard Audio demodulation for a single channel can be started or stopped by use of the items at the bottom of its context menu Play as USB audio Play as AM audio Play as L5B audio Play as FM audio w Mo playback Figure 31 Audio Demodulation Context Menu The default setting for new channels is No playback meaning that the real time channel data will not be used for audio demodulation by the GUI In this case it is possible to use external applications to access the channel data For further details see chapter Streaming Real Time Channels To start the audio demodulation of a channel simply select one of the Play as options on the context menu with the desired demodulator type USB AM LSB or FM Demodulation and playback will start in stantly To turn demodulation off select the menu item No playback again Channels currently subjected to audio demodulation are displayed in the channel list with an asterisk and the demodulation type text inserted in front of channel data as shown in the example below S EE DB T5400 192 168 052 7 000 MHz 9 000 MHz BE AM Channel 2 f 7219 904 kHz Port 60202 Figure 32 Real Time Channel with Audio Demodulation Highlighted The Audio squelch level control below the channel list serves to set the overall squelch level in dBFS for audio playback Audio squelch level J 81 dB Figure 33 Audio Squelch Level Control Streaming Real Time Channels If the real time channel is n
22. art the application double click the control icon on your desktop or your start menu If questions oc cur please consult your system administrator Receiver Configuration After installation of the software you have to make several changes in the configuration files If your cur rent user profile has administrator privileges open the configuration file wplayer conf in the installation directory The configuration file will be copied to your user directory after first startup All further changes have to be made in the configuration file in the user directory If you do not have administrator privileges start the application first by clicking its shortcut on your desk top Close your application after startup and edit the file wbplayer conf which is now located in your user directory You can edit this configuration file without administrator privileges Open the configuration file and change the values of the keys IPAddress for VDC and IZT receivers to their corresponding IP addresses For IZT receivers you must also set the value of the key LocalHostAddress to the IP address of your lo cal system Check whether the values of the keys InitSequence and OverviewSequence refer to the files LGT InitSeguence txt and LGT OverviewSequence txt in your installation directory and correct them if necessary Open the file ZT InitSequence txt in your installation directory and set the IP address of your system for Ch1CbbDe
23. ated and displayed within one second This parameter permits to set the time resolution for the spectrogram thus also setting the scroll speed Display mode In mode Line the spectrum is displayed as a closed curve In mode Beam the individual val ues are displayed as bars Peak hold time When the time adjusted has elapsed the peak hold the red curve in the spectrum will be re set by setting on the current spectrum 0 means no reset M Peak hold This checkbox serves to freeze the continuous display after a period specified in the spin box pause Peak hold time button lt Pause gt is activated and locked It can only be ticked if the button lt Peak hold gt has been activated This function will not stop the signal flow between the signal processing modules To reacti vate the continuous update of the display press the button lt Pause gt again toggle switch lt Pause gt In Pause the display is stopped not the signal processing Editing the parameters is possi ble for a more detailed analysis of the current signal range lt Autorange gt Automatic setting of the displayed range to view the total amplitude and frequency range The mode Autorange analyzes 12 spectral lines approx The display is adapted in every change of the range On pressing lt Autorange gt again the process will be deactivated toggle lt Peak hold gt On activation of Peak Hold the maximum energies in the spectrum are recorded and dis played as a red
24. ays uses its current receiver frequency as start frequency for stepping Step up to Frequency 100 000 MHz Step time interval 30s CR Start skepping Figure 24 Frequency Stepping Settings Item Function Step up to This spin box determines the end frequency for stepping Once the application reaches the frequen frequency cy adjusted it will switch back to the start frequency and continue stepping Step time This spin box specifies how many seconds the application is to stay on one frequency during step interval ping Table 8 Frequency Stepping Parameters The stepping function is especially useful in monitoring big frequency ranges The function cannot be used together with the recording as soon as the recording process detects a frequency change it will report an error and stop the current recording Therefore the stepping function is disabled while record Ing Panorama IZT only The panorama function uses the frequency scan feature of the IZT R3xxx receivers to provide a panora ma spectrum display of very wide frequency ranges up to 3 GHz During this operation the receiver scans through the wide frequency range very fast and delivers a small piece of signal data for each fre quency The application calculates the spectrum from each signal piece and concatenates those in one very wide spectrum for monitoring purposes The spectrum is displayed in a standard spectrogram view of the GUI The spectrum resolution
25. continuous frequency range without any gaps Therefore in the example below the 4th channel is impossible to select in combination with the first two channels selected and the channel item is therefore automatically disabled Available channels Ill CET5400 122 158 0 51 5 000 MHz 7 000 MHz EDU MHz 5 500 MHz 5 500 MHz 6 000 MHz O 6 000 MHz 6 500 MHz Ll e GO MHz 7 000 MHz Ll Illipgrsann 192 158 0 52 7 000 MHz 9 000 MHz i C Gl 7 ODD MHz 7 500 MHz Ll Jedi GOO MHz 8 000 MHz Ll bed GOO MHz 8 500 MHz O ble SDO MHz 9 000 MHz zer L1 DIZI R3xxx 10 0 0 53 No connection berr CT NO connection Figure 26 Receivers and Channels Tree View Starting and Stopping the Recording Having selected the channels i e the freguency range to be recorded choose how long to record and then start the recording process To do so use the controls in the group box Start Stop recording Start Stop recording End Manually End time 15 11 11 13 24 34 858 Duration 10 min Loop recording Duration 60 min _ Lack recording protect from automatic deletion m Stop active recording Activity Figure 27 Recording Control and Status Pane Function This field defines when and how the recording will be stopped A list box provides the following options Manually The recording will be stopped by pressing the lt Stop gt button manually At specific time The recording will be stopped at a speci
26. dth of the imported sig nal If not used value of 0 the application will set the recording bandwidth to the total available bandwidth i e a sampling rate of the complex signal This option should be used to reduce the bandwidth to the known effective bandwidth of the signal First channel frequency This field can optionally be used to define a center frequency of the first imported channel If not defined the application will try to read this frequency from the signal file Files to import This field is used to define signal files to be imported for each channel Add files but ton Multiple files can be added for each channel those will always be sorted alpha betically and imported in that order Clear button serves to clear all added files Start Import After setting all parameters and defining signal files the Import process is started by pressing the Start Import button A progress bar displays the progress of the import process Stop Import The Import can be stopped anytime by pressing the Stop Import button 34 e Recording Management amp Analysis User Manual go2RECORD D go2 RECORD Table 20 File Import Parameters All information about the import status recording Ids etc are displayed in the lower part of the dialogue window Imported recordings are available in the recording browser just as any native recordings If there is no spectrum information available recording status message Spectr
27. e Opening Recordings The first step when working with recordings will usually be to choose and open a recording To do so double click the respective row in the table or select the item Open recording on the table context menu The recording is opened and its spectrogram is displayed in the offline spectrogram view Deleting Recordings Existing recordings can be deleted by choosing the item Delete recording on the table context menu De leting multiple recordings simultaneously is also possible by selecting multiple rows in the table and choosing the item Delete X recordings on the context menu Displaying and Analyzing Single Recordings After the recording has been opened as described in the chapter Opening Hecordings its spectrogram will be displayed in the offline spectrogram view above the recordings table Since the spectrum data has already been calculated and stored on the server while recording the spec trogram display will be instantaneous even with very long recordings The initial recording display will display the full recording bandwidth in the upper screenshot 16 MHz and a maximum of 10s time segments from the beginning of recording Using Magnifier and Overview For faster navigation in long recordings the spectrogram provides two tools i e Overview and Magnifier which are opened as separate tool windows via the context menu of the offline spectrogram see chapter Context Menu 26 e Recording Management amp
28. echnical signal analysis Listening to narrowband signals SSB AM FM oeveral recording modes Recording scheduler Panorama mode for wideband monitoring with IZT receiver Import function Intuitive user interface GUI Concepts The GUI is a standard software package providing full control of the system and the wideband receivers It is preinstalled and preconfigured to connect to the server automatically upon starting Only a single GUI can be connected to the server at any given time The GUI consists of two main areas i e tabs Real Time Monitoring amp Recording including all tools to manage and record the real time wide band signal Recording Management amp Analysis including all tools to manage and analyze existing recordings El Real time Monitoring amp Recording amp Recording Management amp Analysis Figure 2 GUI Main Tabs These Ul s areas are organised in two separate tabs visible at the top of the main window Use the button in the upper right corner of the window to detach the currently active tab from the main window and use this tab as a separate application window This is especially useful in dual monitor con figurations Use the button in the upper right corner of the detached window to dock it in the main window again The following chapters provide a detailed description of these two user interface tabs 2 e Introduction User Manual go2RECORD SS go2RECORD Quick Start To st
29. fic time in the future If this option has been chosen enter the actual recording stop time as UTC time in the time spin box next to the list box Duration The recording will be stopped after the signal has been recorded for a spe cific duration If this option has been chosen enter the actual duration time in minutes in the time spin box next to the list box 18 e Real Time Monitoring amp Recording User Manual go2RECORD S9 go2RECORD Function bi Loop recording If this checkbox is selected the recording will be made in a ring buffer of a certain length The length of ring buffer can be entered in the spin box next to the checkbox in minutes Once this buffer length is reached the new signal data will overwrite the oldest signal data so you can always access the last buffer length minutes of the re cording lt Record now gt This button starts the recording in accordance with the above settings It is not possi ble to change any of the recording settings once the recording has been started lt Stop active recording gt Stops the recording currently active M Lock recording If this checkbox is selected the recording will be locked so that it cannot be deleted by the automatic deletion from the storage server A text box containing information about events in the server e g starting and stop ping of recordings errors or warnings Activity Table 9 Recording Parameters Recording Scheduler Apart fr
30. he application will go through all the receivers installed and try to find one which can be used for the recording At frequency Use this spin box to define the desired center frequency for the scheduled recording Bandwidth Use this spin box to define the desired bandwidth for the scheduled recording M Daily This checkbox determines whether the scheduled recording is to be made each day at the de recording fined time If so the date information in the begin end time spin boxes will ignored bi Lock Activation of this checkbox causes the recording to be locked to prevent it from automatic dele recording tion lt Add to Select this button to schedule a recording and add it to the list of scheduled items scheduler gt Table 11 Recorder Scheduler Settings Creating and Using Real Time Narrowband Channels In addition to the monitoring of the real time wideband spectrum the application can also provide access to the receiver s narrowband channels These channels can be used for audio demodulation and listening within the GUI or streamed to the signal analysis software via network for further analysis In a typical configuration the number of narrowband real time channels for a single IZT receiver is limited to three and for DBT 5400 to ten channels To create and manage the real time channels use the Real time channels tab Recording Real time channels Parameters Cursor Extras 4 Running channels hn DES DDT54D0D 182 1
31. he spectrogram s parameters are edited on the property sheet featuring several tabs To display the parameters of the spectrogram select the lt Parameters gt tab The following parameters are available Centre Frequency 10 000 000 0 Hz Frequency range F 000 000 0 Hz Maximum level 75 0 d6 Minimum level 140 0 dE Exp average 0 000 Da Lines second 12 js Display mode Peak hold time 10 000 s Peak hald pause Figure 18 Parameters Tab Parameter Function Centre frequency The frequency section to be viewed is set in combination with the frequency range The cen ter frequency is the center of the section Frequency range The frequency section to be viewed is set in combination with the center frequency The fre quency range is the range within the section The zoom can thus be set manually Definition of the level range in the spectrum display The maximum level is the upper end of the section Definition of the level range in the spectrum display The minimum level is the lower end of the section Exp average The spectrum is displayed as an average of several spectra Changing the spectrum will re sult in a total view of the spectrum 090 No average 8090 Low average 80 9990 High average 12 e Displaying and Analyzing the Spectrum User Manual go2RECORD D go2 RECORD Parameter Function ee 86s No updating of the spectrum Lines second Number of spectra that can be calcul
32. lan MHz 7 000 MHz 2 L1 Tllpersa4on 192 168 0 52 7 000 MHz 9 000 MHz O lg 7 000 MHz 7 500 MHz O bed 500 MHz 8 000 MHz Ll iple op MHz 8 500 MHz O RMG GOO MHz 9 000 MHz Ser L1 IZT R3xxx 10 0 0 53 No connection L1 lio connection Figure 22 Receivers and Channels Tree View The first tree view level displays the physical receivers their types their connection status and current freguency range Each receiver on this level can be selected for monitoring by activating the checkbox next to the corresponding item first DBT5400 in the above example This selection will cause this receiv er s real time spectrogram to be displayed in the spectrogram pane In the case of DBT5400 it is possible to select two receivers at a same time provided they have adjacent freguency ranges For details about viewing and managing this real time spectrogram please see chapter Displaying and Analyzing the Spec trum The second tree view level displays the single channels of each receiver with their freguency range These channels represent the smallest unit of a wideband signal which can be chosen for recording De fault setting for DBT5400 is to have four channels with a bandwidth of 500 kHz and for the IZT receiver one channel with a bandwidth of 16 MHz For details about channel selection and recording please con sult the chapter Choosing Receiver Channels for Recording Setting the Receiver Freguency and Bandwidth For IZT and NI receive
33. me it is activated X direction only Additionally the user may draw a rectangle in the display window and zoom into this section graphically by means of the shortcut lt gt If the display window has activated cursors the zoom via rectangle will take priority After zooming the rectangle dis played as a white dotted line will disappear Otherwise simply click any position in the display window to delete the rectangle Zoom out Each time the keyboard shortcut is activated the display area is enlarged by fac tor 2 With disabled cursors the zoom is exclusively made in X direction Table 2 Spectrogram Zoom Functions Context Menu The spectrogram display provides a context menu with a number of useful functions 10 e Displaying and Analyzing the Spectrum User Manual go2RECORD go2RECORD Cursor j Zoom range d oom in Zoom OU E Immediate mouse zoom amy Move gi e Magnifier I overview Figure 17 Spectrogram Display Context Menu Note The Overview is available only with recordings Item Function Activate and deactivate X Y Z and Harmonic cursors Zoom range Max Frequency Range Zoom to maximum frequency range Max Time Range Zoom to maximum time range display entire buffer without scrollbar Zoom in Enlarged view of the section delimited by the cursors Repeat this process until the spectrum area displayed is satisfactory Zoom out Reduced view of the section delimited by the curso
34. ment To delete all listed signals select the Delete all listed signals gt button on the Signals tab Extracting Signals from Recording Having selected the signals of interest and grouped them in the application the actual signal data of these signals can be extracted from the wideband recording and transferred to other applications for further pro cessing During this process signal groups can be concatenated to one signal to facilitate subsequent analysis For example several short time signals can be joined together in a group and analyzed like a continuous signal All exporting and streaming functions are accessed via the lt Play gt and lt Export gt buttons at the bottom of the Signals tab Next to each of these buttons a context menu is available providing various menu items affecting the but ton function Playing Signal s The lt Play gt button serves to extract one or several signals and to stream the signal data to an external application in accordance with the settings on its context menu User Manual go2RECORD Recording Management amp Analysis e 31 D go2 RECORD KE H vw Play selected signal only Play all listed signals Play in loop Play as USB audio Play as AM audio Play as L5B audio Play as FM audio Play as FM audio 200kHz vw Play with external Figure 40 Play Button Context Menu Item Function Play selected signal only This option will cause only one selected signal
35. ng which packet failed This message prompts the originator to send the indicated packet another time ASCII The American Standard Code for Information Interchange commonly known as ASCII is a character encoding scheme originally based on the English alphabet ASCII codes represent text in computers communications equipment and other devices that use text ASCII evolved from telegraphic codes Its first commercial use was as a seven bit code for teleprinting promoted by Bell data services ASCII includes definitions for 128 characters 33 are non printing control characters many now obsolete for formatting and 95 printable characters both upper and lower case Signals consist of 1 start bit 7 or 8 data bits 1 or 2 stop bit and optionally a parity bit thus each character consists of a total of 9 10 or 11 bits BCH In coding theory the BCH codes form a class of parameterized error correcting codes BCH codes were invented in 1959 by Hocquenghem and independently in 1960 by Bose and Ray Chaudhuri The acro nym BCH comprises the initials of these inventors names User Manual go2RECORD Glossary of Terms e 37 D go2 RECORD Reed Solomon codes which are BCH codes are used in applications such as satellite communications compact disc players DVDs disk drives and two dimensional bar codes In technical terms a BCH code is a multilevel cyclic variable length digital error correcting code used to correct multiple random error pat
36. om the manual recording control described in the previous chapters the application also provides a recording scheduler to start and stop recordings automatically in the future For each scheduled recording the operator can define its desired start end time as well as the frequency and the desired receiver This information is stored on the server Ten seconds prior to the defined start time the server checks whether the recording can be started and sets the receiver to the desired frequen cy if required In case another recording runs at the time or if it is not possible to set the receiver to the desired frequency the server will mark the scheduled recording as erroneous The recording scheduler is located on the right side of the lt Real Time Monitoring amp Recording gt tab User Manual go2RECORD Real Time Monitoring amp Recording e 19 go2RECORD Spectrum amp Recording Recording scheduler Real time channels Param gt Fiter Status Start End Daily Freq CY Pending 09 11 2010 11 58 18 09 11 201011 59 18 Ma lg Finished 09 11 2010 11 17 59 09 11 2010 11 18 59 No Fi Finished 09 11 2010 11 15 04 09 11 2010 11 17 56 Ma Fi Finished 09 11 2010 11 12 56 09 11 2010 11 17 56 No Delete all listed Add scheduled recording Begin time 09 11 10 11 58 18 718 1 End time 03 11 10 11 52 18 718 E Duration Use receiver Mu available Ab Frequency 130 00 MHz E Bandwidth 16 00 MHz
37. or demodulator It characterizes a device which is used to transfer information over radio telephone or fiberglass line The information which is to be sent is adapted to the channel so that it can be retrieived as reliable as possible given the characteristics of the channel RCM Receiver Control Modul receiver exe SLEW Link11 is a NATO standard exchange of for tactical data over radio Single Tone Link Eleven Waveform is a variant with extended data protection by interleaving and convolutional block coding SNR oignal to noise ratio often abbreviated SNR or S N is a measure used in science and engineering that compares the level of a desired signal to the level of background noise It is defined as the ratio of signal power to the noise power A ratio higher than 1 1 indicates more signal than noise Normally the values are indicated in dB UHF Ultra High Frequency 0 3 3 GHz This is the frequency band for information transfer with high bandwidth Due to the quasi optical wave propagation the range is limited to about 10 kilometers for omnidirectional antenna systems and to line of sight links in case of directional antennas User Manual go2RECORD Glossary of Terms e 39 ex go2RECORD VHF Very High Frequency 30 300 MHz This is the freguency range for information transfer with medium bandwidth Due to the more or less gua si optical wave propagation the range is limited to some 10 kilometers for omnidirection
38. ot being used for audio demodulation in the application as described in the previous chapter signal analysis software can be used to receive the channel data and to analyze it fur ther in real time User Manual go2RECORD Real Time Monitoring amp Recording e 23 D go2 RECORD Using this feature requires to set the signal source settings properly in the signal analysis software Go to Options dialogue box menu Extras Options and enter the IP address of the server computer in the group box Signal source on the lt Network gt tab If questions occur contact your system administrator for the exact value In the Channel box enter the channel ID 200 e g 201 for Channel 1 Options Network Record demod output Sound configuration Signal processing APC IP 127 0 UI Port 43153 Signal source IP 132 158 6 200 Port 020 Channel ZU Figure 34 Signal Source Settings On closing the Options dialog box and pressing the button Play you will see the signal data as gener ated by the real time channel Please note that audio demodulation in the GUI application and streaming to the signal analysis software are mutually exclusive operations i e it is not possible to use one channel for audio demodulation in the GUI application and at the same time receive its data in the signal analysis software 24 e Real Time Monitoring amp Recording User Manual go2RECORD S go2RECORD Recording Management amp
39. oups For easy management of recordings with many selected signals of interest you can freely define signal groups and organize its signals accordingly There are two kinds of groups Function Default groups Default groups are valid for all recordings and will appear in each recording Define or edit these groups by clicking the button lt Edit default groups gt and enter the group names in the text pane of this dialogue window 30 e Recording Management amp Analysis User Manual go2RECORD D go2 RECORD Function Default groups Enter names of default groups l nice Unknown Recording specific groups can be created in each recording and will be valid only there To create a new group select the lt Add new group gt button and enter the group name in the dialogue box displayed Additional checkboxes permit to move all signals from the list to the newly created group and to set a filter to select the new group as current group Add new group Group name Link11 Move all listed signals to this group Set filter to show this group only Once the group has been created it will become available in the signal properties where the Group list box allows for moving the signal to the new group Recording specific groups will be automatically deleted if they do not contain any sig nals and the operator switches to another recording or closes the GUI Table 17 Record Signal Group Manage
40. p box Zoom with the spin box Relative factor determines the relative zoom factor when zooming in or out in the spectrogram 14 e Displaying and Analyzing the Spectrum User Manual go2RECORD Real Time Monitoring amp Recording go2RECORD This part of the user interface controls all functions related to the wideband receivers the real time signal display and the starting or stopping of wideband recordings File Server Service Help EM Real time Monitoring amp Recording 13 27 40 000 13 27 42 000 13 27 44 000 13 27 46 000 13 27 48 000 13 27 50 000 13 27 52 000 13 27 54 000 13 27 56 000 13 27 58 000 13 28 00 000 13 28 02 000 13 28 04 000 13 28 06 000 13 28 08 000 13 28 10 000 d6F5 140 150 9000000 9200000 9400000 9600000 OOO Server Connection Connected 127 0 0 1 25027 Selecting and Controlling the Wideband Receiver s A single system can control and use several wideband receivers at a time The receivers currently sup ported are IZT R3xxx HF VUHF max bandwidth 16 MHz PLATH DBT 5400 HF max bandwidth User Manual go2RECORD a Recording Management amp Analysis 9800000 10000000 10200000 10400000 10600000 10800000 EKO Recording and monitoring control NO ACTIVE RECORDING Spectrum amp Recording Recording scheduler Realtime channels Param lt P Available channels Be ll pgrs400 192 168 0 51 9 000 MHz 11 000 MHz M 9
41. ram User Manual go2RECORD Recording Management amp Analysis e 27 go2RECORD Recording management and display settings Record 2 Signals Parameters Cursor Extras Current group All Ke Sort by Time se C List visible only Description Frequency kHz Bancdwidth Hz Group Duration s Voice 3 131450 25 5723 Voice 18 4 Woice 1 131302 50 25558 Voice 13 9 Signal 6 131302 46 30946 Acars 2 5 5ignal 5 131303 55 41109 Acars 2 5 Signal 7 131530 57 129211 Acars 0 6 Acars 13674971 12138 Acars 26 3 Woice 2 134602 38 25565 Voice 9 3 gh Edt defaut groups xx Delete all isted signals Signal details Description Voice 3 Center Frequency 131 450 248 0 Hz gt Bandwidth 5722 963 Hz 7 Start Time 27 01 10 13 36 57 273 2 Stop Time 27 01 10 13 37 15 694 7 Comment Group Voice Figure 38 Signals Tab The following sections describe all operations with signal selection grouping and exporting Creating New Signals New signals are selected directly in the offline spectrogram using one of these methods Function Direct mouse Simply make a selection in the offline spectrogram using the mouse and then choose the item selection Create signal from selection on the context menu A new signal will be created and will appear in the list The name of the new signal will be automatically generated in the form of Sig nal lt lD gt 28 e Recording Management amp Analysis User Manual go2RECORD go2RECORD Function
42. rding Selection Create Signals The recording is displayed in the spectrogram and the spectrum display The context menu and the prop erty sheet provide access to the desired functions and parameters In addition use the magnifier and overview tool windows for further analysis see chapter Using Magnifier and Overview 1x3640 000 the 123700 000 13710000 rh 1x37 30 000 13 37 40 000 1x 37 50 000 122 00 000 UKO IORI Figure 9 Signal Selection Select the desired signals using the mouse and the item Create signal from selection on the context menu or insert X cursors and select the context menu item Create signal from cursor position The signals are highlighted in the display and included in the signal list on the property sheet Description Frequency kHz Bancdwidth Hz Group Duration e Voice 3 131450 25 5723 Yoke 18 4 Voice 1 131302 50 25555 Woice 13 9 Signal 6 131302 46 389456 Acars 2 5 Signal 5 131303 55 41109 Acars 2 5 Signal 7 131530 57 129211 Acars 0 6 Acars 136749 71 12138 Acars 26 3 Voice 2 134502 38 25565 Woice 3 3 Figure 10 Signal List Extract Signals All exporting and streaming functions are accessed via the lt Play gt and lt Export gt buttons at the bottom of the lt Signals gt tab 6 e Quick Start User Manual go2RECORD Ko e E Play u w Play selected signal only Play all listed signals Play in loop Export u Play as USB audio wv Export selected signal only Play as 4
43. requency Stepping Parameters ss 17 Table 9 Recording e EC 19 Table 10 Recorder Scheduler Controls sura 20 Table 11 Recorder Scheduler Settings ss 21 Table 12 Real Time Channel Creation GOIO 22 Table 13 Real Time Channel Reassignments suna 23 Table 14 Recording State Color Code rr YY YRL LL LEL LL LLC LL LL LLCC LLEN LLCC LLES LLCC LL LLD LL LLD LL FFF Y FFLnun 26 Table 15 New Signal Creation EOTGIOTS rss 29 Table 16 Signal List Filtering Parameters rss 30 Table 17 Record Signal Group Management rss 31 Table 18 Signal Playing galea 32 Table 19 Signal Export elea Su i Gu E GY O RF WAG GR LS ONNEN EFA NSF CYFA NGE 33 Table 20 File Import Parameters assa 35 44 o List of Tables User Manual go2RECORD Index A Advanced Receiver Control Functions Option 17 AF 37 ALE 37 ARQ 37 ASCII 37 Audio Demodulation and Playback of Real Time Channels 23 B BCH 37 Browsing and Managing Recordings 25 C Choosing Receiver Channels for Recording 18 Configuration 1 Context Menu 10 38 Creating and Using Real Time Narrowband Channels 21 Creating New Signals 28 Creating Moving and Deleting Real Time Channels 22 Cursors 13 D dB 38 DDC 38 DDL 38 Deleting Recordings 26 DHCP 38 Displaying and Analyzing Single Recordings 26 Displaying and Analyzing the Spectrum 9 E Editing the Signal List 29 Exporting Signals to File 32 User Manual go2RECORD go2 RECORD Extracting Signals from Recording 31 Extra
44. rface Configuration Each system instance consists of the following components One or several digital wideband receivers currently supported are IZT R3xxx PLATH DBT 5400 or NI PXI 5661 A server with a RAID storage unit This component performs all operations on a wideband signal including real time and offline spectrum calculation signal storage in a RAID array and the extraction of narrowband signals from recordings It is delivered as a ready to use combination of server grade hardware and preinstalled software The GUI is a software solution enabling the operator to control all other system components It is deliv ered as an installable software package and can run on a standard PC under a Windows operating sys tem It connects to a running server Optional signal analysis software for in depth analysis of extracted signals may be installed usually on the same computer as the GUI User Manual go2RECORD Introduction e 1 go2RECORD Receiver 1 GUI and analysis E d software server PLATH DBT 5400 Receiver 2 IZT R3xxx Figure 1 Configuration Example Features The system provides the following features Wideband real time and offline spectrogram Simultaneous recording playback and analysis of signal scenarios Fast and interactive navigation Selection and processing of signals of interest Extraction and export of signals or parts of recording with arbitrary bandwidth seamless integration of t
45. rs Repeat this process until the spectrum area displayed is satisfactory Immediate Zoom in by clicking the mouse at the desired position zoom out using the lt Ctrl gt key mouse zoom Move The mouse pointer changes into a hand Drag the displayed section in the desired direction by moving the mouse while keeping the left mouse button pressed Magnifier The mouse pointer changes into a magnifying glass superimposed on a rectangle On mouse click a separate window is opened displaying the magnified contents of the spectrogram display Select the section to magnify either by drawing a rectangle before activating the magnifier function or simply clicking the position of interest in the spectrogram display For further details see chapter Using Magnifier and Overview Overview The mouse pointer changes into a magnifying glass superimposed on a rectangle A separate win Recordings dow is opened displaying the spectrogram overview of the complete recording only For further details see chapter Using Magnifier and Overview Table 3 Spectrogram Display Functions Keyboard Shortcuts In summary the following keyboard shortcuts are available in the spectrogram display Shortcut Function User Manual go2RECORD Displaying and Analyzing the Spectrum e 11 S go2RECORD Shortcut Function Move time scrollbar down to the end Table 4 Spectrogram Display Keyboard Shortcuts Parameter Setting As with all displays t
46. rs the GUI provides the option to adjust the receiver frequency and bandwidth di rectly in the user interface The corresponding controls are located under the receiver s tree view in the group box Receiver settings Receiver settings Frequency 10 000 MHz Bandwidth 2 000 MHz Figure 23 Receiver Settings Having highlighted an IZT receiver in the tree view this group box is enabled permitting to enter the new receiver frequency and bandwidth and to command it to the receiver After the frequency or bandwidth setting the user interface will be disabled for a few seconds until the new settings have been accepted by the receiver Also any active recording will be stopped automatically once the receiver frequency or bandwidth has been changed In special configurations in which the application shares the receiver with other systems this feature might be permanently disabled to ensure that other systems be not interrupted in their operations 16 e Real Time Monitoring amp Recording User Manual go2RECORD D go2 RECORD Advanced Receiver Control Functions Option In addition to the controls to change the receiver frequency and bandwidth the GUI provides two more re ceiver control functions for monitoring purposes Frequency Stepping With this function the operator can command the application to step through defined set of frequencies automatically dwelling a certain amount of time on each frequency The application alw
47. s 14 F Features 2 FEC 38 FFT 38 Filtering the Signal List 30 G Graphical User Interface 3 GUI Concepts 2 H HF 39 I O 39 Importing Existing Recordings 33 Introduction 1 K Keyboard Shortcuts 11 L LF 39 Managing Signal Groups 30 Modem 39 O Opening Recordings 26 Operation 4 Index e 45 D go2 RECORD P Parameter Setting 12 Playing Signal s 31 Q Quick Start 3 R RCM 39 Real Time Monitoring amp Recording 15 Receiver Configuration 3 Recording Management amp Analysis 25 Recording Scheduler 19 Recording Wideband Signals 17 Revisions 1 S Scrollbars 10 Selecting and Controlling the Wideband Receiver s 15 Selecting and Organizing Signals of Interest 27 46 e Index Setting the Receiver Frequency and Bandwidth 16 SLEW 39 SNR 39 Starting and Stopping the Recording 18 Streaming Real Time Channels 23 U UHF 39 Using Magnifier and Overview 26 V VHF 40 X XSLT 40 Z Zoom Functions 10 User Manual go2RECORD
48. sformation It works with every integer number N of samples and requires N operations The FFT is a special variant where N is 2 m being an integer In this case only N logy operations are required accelerating processing significantly for larger N HF High Frequency 3 30 MHz This is the frequency range for world wide information transfer over radio with low bandwidth Propagation in this range is marked by reflections of the waves in the ionosphere a layer which encloses planet earth at a high of about 60 to 600 kilometers This way almost every 2 points on earth can exchange information sometimes within 24 hours either by ground wave or via reflected waves The ionization depends heavily on the solar radiation so the available propagation paths are a function of the time of the day UO UO data are signals represented in the complex plane by their Inphase and Quadrature parts While the sole amplitude information of a signal is ambiguous regarding the phase the combination of and Q data identifies the phase positively The magnitude of an UO signal is the square root of I C the phase is arcsin l plus the quadrant information derived from O LF Low Frequency 30 500 kHz This is the frequency range for medium range information transfer over radio with low bandwidth Propa gation in this case is restricted to ground waves so the coverage is limited to a few 100 kilometers Modem Modem is an abbreviation for modulat
49. sing the bandwidth of the signal with the maximum bandwidth Open exported files in This option will cause the resulting signal to be opened in the signal analysis soft external ware as soon as the export operation is completed Generate file names This option will cause the file name s to be generated automatically without prompt automatically ing the operator about the file name The file name will be internally generated from the recording IDs and the time date information This option is especially useful for opening exported files in the signal analysis software providing a single click integra tion between the recording software and the signal analysis software Table 19 Signal Export Functions Importing Existing Recordings Wideband recordings created with other systems can be imported in the application to use its recording management and analysis functions The recording files to be imported must be provided as wav files containing complex IQ signals During import the files are converted into a special format and copied to the storage server Parallel to the import operation the server calculates the spectrum information for the newly imported recording to ena ble fast browsing in the GUI Once the spectrum calculation is completed the recordings can be used as if they were recorded by the application To start the import process use the menu item File Import recording If you are currently monitoring a live wideb
50. stlP Start the application by clicking the shortcut on your desktop Graphical User Interface Once the application is started the user interface will be displayed on screen It features two tabs labeled lt Real Time Monitoring amp Recording and lt Record Management amp Analysis User Manual go2RECORD Guick Start e 3 D go2 RECORD ek Fie Service Help E Real time Monitoring amp Recording E Recording Management amp Analysis el Recording and monitoring settings Spectrum amp Recording Real time channels Parameters Cursor Extras 13 59 20 000 Available channels S M ll pers400 192 168 0 51 9 000 MHz 11 000 MHz P el DCD MHz 9 500 MHz 13 59 25 000 mn bur 42 500 MHz 10 000 MHz be le 10 000 MHz 10 500 MHz eea ig 10 500 MHz 11 000 MHz 13 59 30 000 1 WIDBTS400 192 168 0 52 7 000 MHz 9 000 MHz b D 7 000 MHz 7 500 MHz iL 7 500 MHz 8 000 MHz iL Mamm MHz 8 500 MHz 13 59 35 000 i Cl 8 500 MHz 9 000 MHz 5 O IUS R3XXX 10 0 0 53 No connection horr O lano connection 13 59 40 000 Receiver settings 13 59 45 000 Frequency 1 000 MHz 5 Set frequency Start Stop recording Recording ID 132 Begin Now vj 01 01 00 00 00 00 000 End Manually vl 21 04 11 14 18 20 984 C Loop recording 60 min Status dBFS 60 100 110 120 130 140 9000000 9200000 3400000 9600000 9800000
51. terns BCH codes may also be used with multilevel phase shift keying whenever the number of levels is a prime number or a power of a prime number A BCH code in 11 levels has been used to represent the 10 decimal digits plus a sign digit Context menu A context menu also called contextual shortcut popup or pop up menu is a menu in a graphical user in terface GUI that appears upon user interaction such as a right click mouse operation A context menu offers a limited set of choices that are available in the current state or context of the operating system or application Usually the available choices are actions related to the selected object dB Decibel Symbol dB is a logarithmic unit that indicates ratio or gain Decibel is used to indicate the level of acoustic or electromagnetic waves or electronic signals The logarithmic scale can characterize very big or very small numbers with short notation The dB level can be viewed as relative gain or attenuation of one level vs a second or absolute logarithmic scale level for well known reference levels Decibel is a dimensionless unit The ratio in Bel is the base 10 logarithm of the ratio of P1 to PO Ratio dB 10 log P1 PO DDC In digital signal processing a Digital Down Converter converts a digitized real signal centered at an inter mediate frequency to a baseband complex signal centered at zero frequency In addition to down conversion DDC s typically decimate sign
52. to the area around the channel The same effect can be achieved by choosing the item Zoom in this channel on the context menu on the channel list Creating Moving and Deleting Real Time Channels There are two ways to create new real time channels Function From live spectrogram view If X cursors are inserted in the spectrogram see chapter Cursors these cur sors serve to create real time channels straight from the spectrogram context menu Having positioned one of the X cursors on the desired frequency posi tion choose one of the following options on the context menu to create a new real time channel at the cursor position Create Real time channel From blue cursor 51 Create Real time channel From red cursor xz From Add new channel dialog Clicking the lt Add new channel gt button calls a dialogue box for manual entry of the desired channel frequency of the new real time channel The fre quency entered must of course be within the frequency range of at least one of system s receivers On selecting the lt OK gt button the new real time chan nel will be created at the desired frequency Add new Real time channel Channel Frequency 8284 578 kHz gt Table 12 Real Time Channel Creation Options New channels will always be created with a predefined default bandwidth of 20 kHz for DBT 5400 or 25 kHz for the IZT receiver Existing channels can be moved to another frequency in two ways First select the channel b
53. um not available message please stop any monitoring processes possibly running for a few minutes to enable the application to calculate the spectrum information User Manual go2RECORD Recording Management amp Analysis e 35 SS go2RECORD Glossary of Terms AF Audio Frequency 40 20000 Hz Audio Frequency is the range of acoustic waves which the human can perceive in contrast to ultrasonic waves which humans cannot hear ALE Automatic Link Establishment commonly known as ALE is the worldwide de facto standard for digitally initiating and sustaining HF radio communications ALE is a feature in an HF communications radio trans ceiver system that enables the radio station to make contact or initiate a link between itself and another HF radio station or network of stations The purpose is to provide a reliable rapid method of calling and connecting during constantly changing HF ionospheric propagation reception interference and shared spectrum use of busy or congested HF channels ARQ The Automatic Repeat reQuest protocol ARQ is a method to increase the reliability of data transfer The data to transfer is split into smaller packets each packet is extended by a packet number and a check sum On the receiving side a checksum is generated on the received data part of the packet and com pared to the checksum that was sent If they do not concur the receiving station sends a message to the originator of the message reporti
54. will usually be much lower than in standard view a a Panorama From 100 000 MHz x Panorama to 500 000 MHz 9 start panorama Figure 25 Panorama Settings The stepping function is especially useful in monitoring big frequency ranges The function cannot be used together with the recording as soon as the recording process detects a frequency change it will report an error and stop the current recording Therefore the panorama function is disabled while record Ing Recording Wideband Signals The operator can choose the frequency range for recording by selecting the receiver and its channels in the receiver tree view The following chapters describe this operation in detail User Manual go2RECORD Real Time Monitoring amp Recording e 17 D go2 RECORD Choosing Receiver Channels for Recording To record a wideband signal from a specific receiver always select the actual receiver first to see its live spectrum in a spectrogram view Having viewed the live spectrum choose the channels to be recorded and select the corresponding channels in the tree view Note that only the channels of the currently se lected receiver can be selected for recording In the example below the whole spectrum of the first DBT5400 receiver will be displayed in the spectro gram 5 7 MHz but only the first two channels have been selected for recording 5 6 MHz The user in terface will not permit the selection of channels unless they form a
55. y clicking its entry in the channel list or click its graphical representation in the spectrogram view Function Cursors in spectrogram view If X cursors are inserted in the spectrogram see chapter Cursors these cur sors serve to move the currently selected real time channels by selecting one of the following items on the spectrogram context menu 22 e Real Time Monitoring amp Recording User Manual go2RECORD go2RECORD Item Function Move selected Real time channel to blue cursor x1 Move selected Real time channel to red cursor xz Double click in spectrogram view Double click the desired position in the spectrogram to automatically move the currently selected real time channel to the clicked frequency position Table 13 Real Time Channel Reassignments To delete a real time channel click its entry in the tree view and choose the item Delete this channel on the context menu To delete all real time channels simultaneously select the button lt Delete all channels gt Audio Demodulation and Playback of Real Time Channels The GUI features audio demodulation and playback functions to enable the direct processing of the creat ed real time channels in the application without using external applications It is possible to demodulate and playback several real time channels simultaneously each with different parameters Audio output of all demodulated channels will be mixed and replayed by the local default soundc
56. y the local default soundcard Play as USB audio Play as AM audio Play as L56 audio Play as FM audio w No playback Figure 14 Audio Demodulator Control Settings otart and stop the audio demodulation for a single channel by means of the items at the bottom of its con text menu see chapter Audio Demodulation and Playback of Real Time Channels Additionally the real time channels can be streamed to external applications for further analysis Using this feature requires to set the signal source settings properly see chapter Streaming Real Time Chan nels Audio Squelch Level If desired use the Audio squelch level control below the channel list to set the overall squelch level in dBFS for audio playback User Manual go2RECORD Quick Start e 7 go2RECORD Audio squelch level J 81 dB I I I I I I I I I I Figure 15 Audio Squelch Level Settings 8 e Quick Start User Manual go2RECORD go2RECORD Displaying and Analyzing the Spectrum The spectrogram display serves to monitor the input signal It displays both the instantaneous spectrum in 11 94 35 DDD 11 44 40 000 11 44 45 000 11 44 50 000 11 44 55 000 dBF5 T0 d 0 b Beigl R Am 110 120 430 an PEREA ETE TOCODCU Fe00000 4008000 T SIDDI BO00000 88200000 B400000 s600000 Band Hz Figure 16 Spectrogram Display The spectrogram colors indicate the energy level from black gt blue gt green gt
57. you will see the signal data in the signal analysis software as generated by the real time channel Table 18 Signal Playing Functions Exporting Signals to File The Export button extracts one or several signals from the wideband recording and stores them in a complex WAV file in accordance with the settings on its context menu 32 e Recording Management amp Analysis User Manual go2RECORD go2RECORD Se H wv Export selected signal only Export all listed signals multiple Files Export all listed signals single File Open exported Files in external Generate File names automatically Figure 41 Export Button Context Menu Item Function Export selected signal This option will cause only the selected signal to be extracted and stored in a file only The file name for the result file is defined by the operator Export all listed signals This option will cause all signals currently visible in the list to be extracted to separate multiple files signal files The file name for the new file is defined by the operator This name will be used as a base for the result file the actual file name will be generated from the base name and the signal name Export all listed signals This option will cause all signals currently visible in the list to be extracted to one file single file The file name for the new file is defined by the operator If the selected signals have different bandwidths they will all be extracted by u

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