Interference Location Mapping Application Note
Contents
1. Back Detection Peak Dire chon aa AA Signal Strength 7 33 dBm Figure 14 Saving Data Points Access the Save Recall Points Map submenu from the Interference Mapping Menu Anritsu 06 24 2010 11 16 18 am H N Saver aE i Location Internal Memory usr Filename eName_ O Measurement Filetype JPEG JPEG aa g AAA ma es es ee Figure 15 Saving the File Change the needed fields and press Enter in order to save the file Analyzing the Data When saved as a tab delimited file mtd the points recorded by the instrument can later be opened by a program such as Excel to be viewed and analyzed Once opened looking at the file from top to bottom the first things you see are the rows 1 17 It has basic information such as the file mode model serial number and date the mapping was done The actual data below is divided into columns Column A the point number Column B the status of the GPS Column C the longitude Column D the latitude Column E the UTC date Column F the UTC time Column G the system date Column H the system time Column L the measurement strength Column O the bearing of the point Column R the configuration of the settings Columns A H contain the basic information concerning the interference mapping session Columns L O and R have more of the analytical data derived from the instrument so you can review and analyze the data E Micr2. Status Self Test Application Self Test GPS Calibrate Touch Screen Application Options zy system Options oe 39 35 dBm On Off GPS Info GPS Voltage 3 3 V sy Reset Back aA 36 77 dBm The GPS submenu allows the user to adjust the settings and view the status of the GPS Interference Mapping To begin Interference Mapping you first must open the MAP map file created earlier Insert the USB flash drive into the USB port of the instrument From there press IA Mapping and from that menu touch Save Recall Points Map In the Mapping Save Recall submenu touch Recall a Map Find the file from the USB you inserted and press Enter on the keypad The map should now appear on the screen If not done so already the instrument will attempt to lock the GPS by tracking at least three satellites Your location will then be set for you by the instrument relative to the map Move to the desired locations and with a directional antenna perform a 360 degree turn With the sound option on a series of beeps helps find the direction of where the signal is strongest When the direction is found rotate the line with the knob on the instrument relative to that position and press Save Current Point Location amp Direction The instrument saves the location and direction indicated with a line of the interfering signal Repeating the process creates multiple lines which intersect to indicate the loca
3. to a MAP map file for the instrument to read Map Master is located on the CD provided with the instrument or can be downloaded and installed from the Anritsu website www anritsu com The ideal image size would be close to 666 pixels x 420 pixels 1 6 1 ratio The first step is to create a MAP file using Map Master Map Master has the capability to capture a map directly from the source to the program To do so press Capture Map The software program will load a 3 party map provider and you can enter the address of the area you wish to map There is a zoom option as well so the map and area can be larger or smaller Once the proper specifications are made press Capture Map located at the lower right The picture is now on the Map Master screen and the latitudinal and longitudinal coordinates have been entered Then press File Save As to save as a MAP file Set the destination to the USB flash drive which can then be inserted into the instrument Create Map file using Map Master YA Map Master K x Figure 1 Capturing the Map After pressing Capture Map Map Master will load a 3 party map provider for easy screen capturing Map Master A EJ Select a Map hile wai pi 4 Savei a Removable Disk G 2 a th P gs File nama morgan hill Anritsu Nebwak Save as type Aniu Map Hes map Figure 2 Saving the Map After pressing Capture Map on the bottom right the map and coordinates will be sen
4. 65 6282 2533 Anritsu All trademarks are registered trademarks of their respective companies Data subject to change without notice For the most recent specifications visit www anritsu com amp CER e India Anritsu Pte Ltd India Branch Office 3rd Floor Shri Lakshminarayan Niwas 2726 80 ft Road HAL 3rd Stage Bangalore 560 075 India Phone 91 80 4058 1300 Fax 91 80 4058 1301 e P R China Hong Kong Anritsu Company Ltd Units 4 amp 5 28th Floor Greenfield Tower Concordia Plaza No 1 Science Museum Road Tsim Sha Tsui East Kowloon Hong Kong P R China Phone 852 2301 4980 Fax 852 2301 3545 e P R China Beijing Anritsu Company Ltd Beijing Representative Office Room 2008 Beijing Fortune Building No 5 Dong San Huan Bei Road Chao Yang District Beijing 100004 P R China Phone 86 10 6590 9230 Fax 86 10 6590 9235 e Korea Anritsu Corporation Ltd 8F Hyunjuk Bldg 832 41 Yeoksam Dong Kangnam ku Seoul 135 080 Korea Phone 82 2 553 6603 Fax 82 2 553 6604 e Australia Anritsu Pty Ltd Unit 21 270 Ferntree Gully Road Notting Hill Victoria 3168 Australia Phone 61 3 9558 8177 Fax 61 3 9558 8255 e Taiwan Anritsu Company Inc 7F No 316 Sec 1 Neihu Rd Taipei 114 Taiwan Phone 886 2 8751 1816 Fax 886 2 8751 1817 11410 00584 Rev A Printed in United States 2010 09 2010 Anritsu Company All Rights Reserved
5. Application Note inritsu Interference Location Mapping With the Anritsu E Series and C Series Spectrum Master Cell Master and Site Master with Option 25 Interference Analyzer Introduction Spectrum analyzers provide accurate RF power measurements over a wide frequency range With a directional antenna and the on screen map display with Option 25 Interference Analyzer the location of transmitted signals can be identified and documented on the display of the analyzer The Anritsu E Series and C Series Spectrum Master Cell Master and Site Master models with spectrum analysis capability can include Option 25 Interference Analysis This option supports on screen GPS map displays with indication of current location and direction to an interference signal In this application note you will learn how to fully operate the instrument with accordance to the Interference mapping process Interference Location Mapping requires Option 31 GPS The GPS receiver will automatically pinpoint your location relative to the on screen map and the user can indicate on the map the direction to a signal transmitter The intersection from multiple GPS locations can indicate the source of the interference Anritsu Map Master Note A USB flash drive is required to transfer MAP map files to the instrument To view maps with GPS a PC software program called Map Master must be used in order to convert picture files captured from a map provider
6. Green Luton Bedfordshire LU1 3LU U K Phone 44 1582 433280 Fax 44 1582 731303 e France Anritsu S A 12 Avenue du Qu bec B timent Iris 1 Silic 638 91140 VILLEBON SUR YVETTE France Phone 33 1 60 92 15 50 Fax 33 1 64 46 10 65 e Germany Anritsu GmbH Nemetschek Haus Konrad Zuse Platz 1 81829 M nchen Germany Phone 49 0 89 442308 0 Fax 49 0 89 442308 55 e Italy Anritsu S p A Via Elio Vittorini 129 00144 Roma Italy Phone 39 06 509 9711 Fax 39 06 502 2425 e Sweden Anritsu AB Borgafjordsgatan 13 164 40 KISTA Sweden Phone 46 8 534 707 00 Fax 46 8 534 707 30 e Finland Anritsu AB Teknobulevardi 3 5 Fl 01530 VANTAA Finland Phone 358 20 741 8100 Fax 358 20 741 8111 e Denmark Anritsu A S for Service Assurance Anritsu AB for Test amp Measurement Kirkebjerg All 90 DK 2605 Br ndby Denmark Phone 45 7211 2200 Fax 45 7211 2210 e Russia Anritsu EMEA Ltd Representation Office in Russia Tverskaya str 16 2 bld 1 7th floor Russia 125009 Moscow Phone 7 495 363 1694 Fax 7 495 935 8962 e United Arab Emirates Anritsu EMEA Ltd Dubai Liaison Office P O Box 500413 Dubai Internet City Al Thuraya Building Tower 1 Suite 701 7th Floor Dubai United Arab Emirates Phone 971 4 3670352 Fax 971 4 3688460 e Singapore Anritsu Pte Ltd 60 Alexandra Terrace 02 08 The Comtech Lobby A Singapore 118502 Phone 65 6282 2400 Fax
7. analysis and report generation 9 Google Earth Point 1 GPS Locked Longitude Latitude 121 656761 37 147068 UTC Date and Time 08 1 7 2010 21 00 57 System Date and Time 08 1 7 2010 14 00 35 Measurement Signal Strength 45 87 dBm Bearing 53 Setup Frequency 877 000 MHz RBVY 1 MHz VBVV 300 kHz Detection Peak Directions To here From here Google Eye alt 3794 t Figure 17 Google Earth With Google Earth you can open a saved KML file transferred from the device to you computer Simply double click the KML file and Google Earth will run and show the points in a Digital Orthophoto Quadrangle DOQ format You can also click on the points to see the more specific values given also by a tab delimited file To install Google Earth go to the web site http earth google com Download the program and then install it to your computer Additional help may be found through the Help pull down menu Conclusion The increasing number of wireless devices and an ever crowded spectrum is greatly increasing the problems of Interference Wireless technicians often carry a kit of radios directional antennas and paper maps to support locating interferers A high performance spectrum analyzer is the most versatile receiver for interference hunting with its wide continuous tuning range adjustable bandwidth and wide power measurement range Often seeing the signal on the display can help the technician identif
8. e method would be through the keypad function of Shift Mode 9 1 Press the Shift Mode 9 key 2 In the pop up menu scroll down until Interference Analyzer is selected Figure 4 3 Press Enter on the keypad The instrument then opens the Measurements submenu Figure 5 4 In the new submenu press soft key Interference Mapping Figure 5 5 The instrument then turns on Interference Mapping and by pressing Interference Mapping once again you enter the Interference Mapping menu Figure 6 i E i ad G Transmission Spectrum Power acy Interference Cv Signal AMIFM IPM GSM EDGE Measurement Analyzer Meter r Meter Analyzer Generator Analyzer Analyzer a am w J ITE E y YA Ke W CDMA SCDMA FDD LTE EVDO ix AX MAX ISDB T ISDB T SFN Analyzer Analyzer Analyzer Analyzer Analyzer A Analyzer Analyzer Analyzer S iza 25 Analyzer a PA Coverage Interference gt Ma pping Mapping Figure 3 Entering the Interference Mode The main menu contains the icon Interference Analyzer Pressing it enters the instrument in the interference analysis mode Anritsu 08 16 2010 01 38 23 pm GBB Nar e47 were ss23 YA Trace Mode Normal Ref Lvi Offset 0 0 dB Transmission Measurement A Spectrum Analyzer Input Atten 0 0 dB Power Meter High Accuracy Power Meter Interference Analysis Channel Scanner CW Signal Generator AM FM PM Analyzer VBW GSM GPRS EDGE Signal Analyzer 300 kHz WCDMA HSDPS Signal Analyzer TD SCDMA Signal Ana
9. here is then an option to position the soft key on the main menu The added soft key makes entering both the Interference Analyzer and Interference Mapping mode considerably more convenient Turning on GPS In order to Interference Map Option 31 GPS is required To turn the GPS on press Shift System 8 and then the GPS soft key In the GPS sub menu you can turn the GPS on or off view GPS info change the GPS Voltage or reset the GPS SPA Coverage Power ON Signal Generator High Accuracy Meter Power Meter Analyzer FDDLTE CDMA EVDO Analyzer Analyzer Analyzer Spectrum Interference Peri aa Channel scanner _ TD SCDMA Analyzer W CDMA Fixed WiMAX Mobile WIMAX Analyzer Analyzer Analyzer Analyze NXDN Analyzer MO a Interference Mapping Mapping e w AMIFM PM Analyzer zA ISDB T ISDB T SFN Analyzer Analyzer 6 DGE zer GSMIE Analy Figure 7 Interference Mapping Soft Key ae Anritsu 08 16 2010 01 55 20 pn GB Nar 8 47 wizie 39 23 YA Frequency 106 500 MHz 56 37 dBm RBW 1 MHz Detection Peak 67 39 dBm Figure 8 System Menu Direction 0 degrees Signal Strength Anritsu 08 17 2010 10 36 18 am GB Nar 8747 wizie 39 23 YA N Frequency 106 500 MHz 53 90 dBm RBW 1 MHz Detection Peak Direction 0 degrees Figure 9 GPS Sub Menu 5 Signal Strength Measurements System
10. lyzer Detection LTE Signal Analyzer Peak CDMA Signal Analyzer EVDO Signal Analyzer Fixed WIMAX Signal Analyzer Mobile WiMAX Signal Analyzer ISDB T Signal Analyzer ISDB T SFN Analyzer P25 Analyzer NXDN Analyzer RBW 1 MHz Trace Count Reference Source GPS Hi Accy Sweep Time 1 ms Start Time 0 ps Freq 106 500 MHz Sweep Time 1 ms Figure 4 Mode Pop Up Menu 3 Scroll down until the Interference Analyzer option is selected and press enter to access that menu Anritsu 08 16 2010 01 38 58 pm PO Nar 8 47 wizte 39 23 EE Frequency 106 500 MHz Detection Peak Figure 5 Measurements Menu Once at the Measurements menu you then press Interference Mapping Once in the mode the screen will change and the circle on the soft key will fill up with red Anritsu 08 16 2010 01 39 03 pm E N 37 8 47 wizte 39 23 EE Frequency 106 500 MHz Detection Peak Figure 6 Interference Mapping Menu After pressing Interference Mapping again you are then directed to the Interference Mapping menu The simplest way to access the Interference Mapping mode would be through the main menu of the instrument Press the touch icon Interference Mapping The instrument enters both the Interference Mapping and Interference Analyzer mode However this does not show up on some users screens so in order to add this soft key press the Interference Mapping button from step four and hold for at least three seconds T
11. osoft Excel mh mtd ES BED File Edit View Insert Format Tools Data Window Help aa IA Bea ARAS AI aa RB lt ANRITSU gt B C D F G H Type a question for help X J lt ANRITS I gt FILE_MODE MODEL MS 27 12E SM6307 9 10 1 2 19 21 25 27 28 29 30 31 32 33 34 35 36 37 438 40 41 42 43 44 45 46 47 57 60 6 1 6 2 63 64 65 66 67 78 90 41 9 431 509 520 522 530 532 541 542 546 SN 1014035 UNIT_NAME 6 DESCR cardO ust mh mtd 8 DATE 2010 08 17 02 15 24 46 9 BASE_VER V3 49 10 APP_NAME SPA 11 APP VER TA4 53 0002 SUB_MODE_NUM 3 APP_MODE 1 14 15 Begin SPA Setup 16 lt APP_SETUP gt 17 VERSION 1 19 lt APP_DATA gt 20 Pt GPS Status Longitude X Latitude UTC Date UTC Time System Date System Time Measurement 21 Point 1 GPS Locked 121 656761 37 147068 6 17 2010 21 00 57 8 17 2010 14 00 35 Signal Strength 45 67 dBm Bearing 53 Setup Frequ Point 2 GPS Locked 121 650429 37 147148 67 2010 21 06 52 8 17 2010 14 06 31 Signal Strength 63 04 dBm Bearing 345 Setup Frege 23 Point 3 GPS Locked 121 6567 37 150654 6 17 2010 21 12 46 68 17 2010 14 12 25 Signal Strength 48 33 dBm Bearing 88 Setup Freq 24 Point 4 GPS Locked 121 655212 37 144028 8 17 2010 21 18 07 8 17 2010 14 17 46 Signal Strength 61 20 dBm Bearing 28 Setup Freq lt APP DATA END gt 51 wa Nm z fa gt Ready Figure 16 Viewing the Data The data can then be opened by other software programs for
12. plification or attenuation can be adjusted on the signal input The attenuator can be automatically adjusted as a function of the reference level In general signals below 40 dBm can use the pre amplifier while signals over 30 dBm should be attenuated For example if the reference level setting is 20dBm attenuation should be set to 50dB for a mixer input of 30 dBm 3 Detector Type a 4 Filtering a Various detection circuits can be utilized These include Peak RMS Negative and Sample The type of detection is predicated on the user s measurement needs Filtering should be used to measure signals in the presence of interferers Filters can be added to the input of the analyzer to discriminate between wanted and unwanted signals avoiding corruption of the measurement with adjacent high level signals 5 Frequency a Select frequency to be measured Interference Mapping Mode In order to Interference Map the instrument must be in both the Interference Analyzer and Interference Mapping mode 1 Access the Main Menu by pressing the Menu key on the keypad 2 Press the Interference Analyzer soft key icon 3 Press the Measurements soft key to load up the Measurements submenu Figure 5 4 In the new submenu press soft key Interference Mapping Figure 5 5 The instrument then turns on Interference Mapping and by pressing Interference Mapping once again you enter the Interference Mapping menu Figure 6 An alternativ
13. press Save Current Point Location amp Direction the instrument begins saves the direction and placing of the point Multiple points create intersecting lines and the interfering signal can be traced Saving the Data Collected Once Data Collection is complete the data points can be saved as a KML file a tab delimited text file mtd and or a JPEG When it is saved as a KML file the data points can be later recalled by the instrument to be used once again and can also be opened by Google Earth For viewing the data collected however it is recommended that the data be saved as a tab delimited file mtd A tab delimited file can be opened with notepad or Excel for easy viewing and report generation To begin access the Mapping Save Recall submenu from the Coverage Mapping Menu From there touch Save KML Points Save Tab Delimited Points or Save JPG A pop up save prompt comes up where the filename and file type can be changed Once finished press enter on the keypad or touch screen to save The file can then be copied to the USB transferred and opened Mapping Save Recall Save Anritsu 08 17 2010 04 49 08 pm GBB Naz 847 wizte as 23 fel ha he Ee A AN N Save Ks r a i gt f A 4 Tab Delimited Points Save JPG Recall a Map Sey WA Or Recall KML Points lt Ma SAs ta Only 9 in Recall KML Points b with Map be r ie Recall rat a Frequency Default 877 000 MHz Grid 64 21 dBm MHz
14. t to Map Master Once done simply save it to the USB flash drive Getting Started Prior to conducting the interference mapping survey the analyzer itself must first be configured to properly measure the signals of interest Knowledge of various parametrics such as anticipated signal strength and variation potential presence of interfering signals and noise sources should be used in determining analyzer settings A brief summary of the main analyzer setups is shown below However the user may want to refer to the instrument user manual for more detailed guidance 1 Bandwidth Parameters a Di Resolution Bandwidth RBW minimum bandwidth over which one can separate two signals for viewing The RBW can be decreased for viewing closely spaced signals at the expense of acquisition time A low RBW is also advantageous in limiting noise distortion and resolution of low level signals Video Bandwidth VBW used for averaging and filtering noise This is particularly useful in discerning low level signals in the presence of noise 2 Reference Level Pre Amplifier and Attenuator a Reference Level Input signal levels are reference to the top line of the graticule known as the reference level Depending on the amount of power anticipated in the signals to be measured the reference level should be adjusted accordingly Pre Amplifier and Attenuator In order to present the proper signal level to the analyzer detection circuits pre am
15. tion of the interfering signal Anritsu 08 16 2010 03 16 20 pm EB Naz 8 47 were 3923 YA Mapping Save Recall Save KML Points Save Tab Delimited Points Save JPG Recall a Map Recall KML Points Only Recall KML Points with Map Recall Default 106 500 MHz Grid RBW 52 08 dBm 1 MHz Back Detection e Hi Seton a AA Signal Strength 39 35 dBm Figure 10 Recalling a Map Freguency From the Interference Mapping menu select Save Recall Points Map and in the next menu Recall a Map Anritsu 08 16 2010 03 46 26 pm GBB Nar ar wizte aa za fel Recall Name Date Type Filetype Map Sort Order Scroll to File and Press Enter to Recall Asc Desc File Type E ee Internal Memory Map 1 Refresh m Gj indoor Mapping Pete irectories ij OUTDOOR mor q 07 15 2010 11 21 36 a m gan hill map Figure 11 Selecting MAP file Select the MAP map file from the USB and press Enter on the keypad Ae 48 TE aE EEA Ty 2 N 37e 8 47 w 121 3924 fl _ A SX sf gt NS oF Roc Ze A q5 f oe OA N Frequency 106 500 MHz RBW 1 MHz Detection Figure 12 Position With the map on the screen the instrument automatically pinpoints your location relative to the map Anritsu 08 17 2010 SE 03 pm Nazo 6 47 W 121 39 24 H wr Frequency 677 000 MHz RBW 1 MHz Detection O w Figure 13 GPS Mapping When you
16. y the type of interference With a directional antenna and the on screen map display with the GPS location of interference signals can be documented on the display of the analyzer The Anritsu E Series Spectrum Master Cell Master and Site Master models are powerful battery operated instruments that can support a wide range of signal types With the addition of Option 25 Interference Analysis and the power of an integrated GPS Option 31 and on screen map display interference hunters can easily mark multiple directions to an transmitter to create an intersection location point 10 11 Zinritsu Anritsu Corporation 5 1 1 Onna Atsugi shi Kanagawa 243 8555 Japan Phone 81 46 223 1111 Fax 81 46 296 1238 e U S A Anritsu Company 1155 East Collins Boulevard Suite 100 Richardson TX 75081 U S A Toll Free 1 800 ANRITSU 267 4878 Phone 1 972 644 1777 Fax 1 972 671 1877 e Canada Anritsu Electronics Ltd 700 Silver Seven Road Suite 120 Kanata Ontario K2V 1C3 Canada Phone 1 613 591 2003 Fax 1 613 591 1006 e Brazil Anritsu Electr nica Ltda Praga Amadeu Amaral 27 1 Andar 01327 010 Bela Vista Sao Paulo SP Brasil Phone 55 11 3283 2511 Fax 55 11 3288 6940 e Mexico Anritsu Company S A de C V Av Ej rcito Nacional No 579 Piso 9 Col Granada 11520 M xico D F M xico Phone 52 55 1101 2370 Fax 52 55 5254 3147 e U K Anritsu EMEA Ltd 200 Capability
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