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8-14

PIM-P Analyzer User’s Manual

8.4

Procedures to measure VLM (VSWR/ Line Monitor)

VLM (VSWR/Line Monitor) Setup

8.4.1

PIMD Analyzer VLM Measurement Setup Diagram

The figure above shows how to setup PIMD Analyzer to measure VLM. At this time,

the VLM optional module should be connected at the front side. Each channel of optional
module is connected to RF cable from the channel in the front panel.

VLM (VSWR/Line Monitor) Measurement

8.4.2

Summary of Contents for PIM-P

Page 1: ...PIM P Analyzer User s Manual AWT Global LLC www awt global com 1 973 321 3423 Passive Inter Modulation Distortion...

Page 2: ...0 7 2 3 Comments 7 13 7 2 4 History Screen 7 14 7 2 5 Data Management 7 15 7 2 6 Log Files and Content 7 15 7 2 7 Log File Management 7 16 7 2 8 Data Copy 7 17 7 2 9 Data Delete Log Files 7 18 7 2 10...

Page 3: ...1 2 Environment 10 2 10 1 3 10 2 How to test PIM 10 3 PIM P Technical Information 11 1 11 11 1 Tester Types 11 2 11 2 Specifications Data Sheet 11 3 Transmitter Specification 11 3 11 2 1 Receiver Spec...

Page 5: ...the highest quality standards We strive to provide the most reliable state of the art test equipment allowing our customers to have the utmost confidence in the results of their testing To ensure you...

Page 7: ...eration when with the subject covered in this section The HINT symbol is used to identify additional comments which are outside of the normal format of the manual however can give the user additional...

Page 8: ...s device generates Radio Frequency RF energy under normal operation and should always be operated in accordance with local and national licensing laws RF energy in the 700 to 1 000 MHz and 1 800 to 2...

Page 9: ...xtensive force like dents torn off pieces or loose parts in the case 2 4 PIM P SERIES PACKING LIST PIM P Series Analyzer is shipped complete and is ready to use upon receipt Note Save the original pac...

Page 11: ...rotection circuitry to control RF Power during operation and during powering on off cycles After switching Main Power Switch On wait 2 seconds before pushing Front Power Button Fans may Briefly run af...

Page 12: ...second powers unit down immediately See also chapter Powering PIM P up down Note Main Power Switch on the front must be in ON Position I 10 MHz Reference out 10 MHz reference output to synchronize ext...

Page 14: ...tem to the load which transforms all RF energy into heat Caution DO NOT operate the PIM P in any active systems The PIM P is a very sensitive Test System that allows testing and analyzing passive RF c...

Page 15: ...Port connector is not designed to support the weight of a component Caution DO NOT block air vents Due to its high RF output power PIM P consumes up to 750W This energy has to be disposed While these...

Page 16: ...s can operate PIM P Analyzers but utilizing the touch screen or via keyboard mouse The user interface is designed specifically for field use all vital operations can be conveniently accessed via the t...

Page 17: ...se performance loss This includes under torqueing and over torqueing Both over and under torqueing result in weak connections which contribute to PIM Over tightening may damage the connector and lead...

Page 18: ...ur accessories frequently to ensure that they are working properly Once you have determined that an accessory is no longer performing as it should replace it with a new device When you received the re...

Page 19: ...m 16 inches in diameter A transit case for PIM P systems is available This case has dedicated space for test systems accessories and also the low PIM cable For more information please refer to the cha...

Page 21: ...econd When used normally the user will not even recognize that these protective mechanisms are working Preparations for powering up Ensure that the main outlet has proper grounding Connect the correct...

Page 22: ...witched off and all vital files will be closed and stored In this mode the urgency to power off the unit trumps handling and closing all files Some information e g log data may be lost Caution Main Sw...

Page 24: ...ut inactive Power levels and the frequencies of the carrier signals must be set in order to activate the RF button To do so pushing the Carrier button displays a list of Carrier signal settings Since...

Page 25: ...entered as well The process is similar to the Carrier entry except this time we push the Site button As with the carrier the system lists all available Sites or Tests Since we have not entered a Site...

Page 26: ...lizes and starts measuring PIM A second push of the RF button stops measurements and transmission of RF signal carriers The last PIM reading is held and shown in grey Note PIM P Analyzers switch RF Po...

Page 28: ...settings of the test equipment are site specific Focus lies on quick measurement and documentation of data PIM P Analyzers provide this easy to use functionality in the Field Mode All base station te...

Page 29: ...efficient If more detailed information about the DUT is required it can be accessed by using the Analyzer Mode of the PIM P Analyzer In this mode the user can analyze multiple intermodulation products...

Page 30: ...alyzer User s Manual Copyright AWT Global LLC All rights reserved 7 1 Operations Menu Tree PIM P Analyzers are designed to provide an efficient workflow The Menu Tree shows the overall menu structure...

Page 31: ...quency MHz and Power level dBm of first carrier signal C System management Pull down Menu choices Self Test tests PIM P functionality with RF ON and OFF See also chapter Pull down Menus D Help Pull do...

Page 32: ...ed Site e g Base Station Location and Site specific information like Feeder line and antenna sector Also often used to describe test setup e g Site 20W_Combiner_Test N RF On Off Switch One Push switch...

Page 33: ...s of the transmitting RF signals and their power level Site information allows to a specify the tested site in detail or to specify component tests more closely All settings entered with Carrier signa...

Page 34: ...or End of list Carriers are selected by clicking tapping them D New Opens Edit Carrier screen without carrier name Note Once the carrier name has been entered it cannot be changed only deleted at a la...

Page 35: ...ies in the receiving band of the PIM P G 123 ABC Toggles the touch screen keyboard between characters and numeric H Delete Deletes last character character to the left of the cursor I Enter Entries ar...

Page 36: ...the PIM P B Selected Site The yellow background indicates that this site is selected and will be used for data logging C Page Indicator Jump arrows If more than 6 different sites are stored in the PI...

Page 37: ...New or changed entries are stored by pushing Enter J E Return Returns to previous site F Feed Additional information Feeder New or changed entries are stored by pushing Enter J G User Additional info...

Page 38: ...ard do not use commas in names or descriptions Log Data is stored in a CSV Comma separated value text form Commas in the description will mix up fields that are assigned for particular values relevant...

Page 39: ...User s Manual Copyright AWT Global LLC All rights reserved Comments 7 2 4 Site information allows users to add comments that provide further information about the Site or the Test Comments are not sto...

Page 40: ...t Name Description Display A Site Site test information including Site name Feeder and Sector B Log Data Set Shows historical information of measurement Date Time PIM reading Frequencies Power levels...

Page 41: ...ucture text after the comma will be taken as new value when importing into a database or spreadsheet which will mix up field assignments Important information will be at an incorrect location Log File...

Page 42: ...String For internal use PIM P Data Log String For internal use Cal date YYYYMMDD Date of Last Calibration CHKSUM XXX For future use Added with firmware version 1 2 and later Sector String 40 Character...

Page 43: ...C Site Allows copying of log data from a specific Site or all Sites the PIM P contains Specific Sites can be selected via the Site Button Selection Specific All Default Specific D History Allows copy...

Page 44: ...lt None B Site Selection to erase log data of a specific Site all sites or none Specific Sites can be selected via the Site button Selection None Specific All Default None C History Allows deletion of...

Page 45: ...pecific Site all sites or none Specific Sites can be selected via the Site button Selection None Specific All Default None C Sites Only Sites Carriers Selection of only Sites are erased or both Sites...

Page 46: ...rs since they influence how the PIM P measures PIM System Information and Buttons Note This screenshot has been taken form a PIM P SW Simulator running on a PC therefore some values are displayed as O...

Page 47: ...modulation test systems come with a total of 5 75 GB of user accessible memory This memory is used to store log data and site setup information The average size of a Log data set is 250 Bytes With a d...

Page 48: ...C Intervals 1s 2s 5s 10s 20s 30s 1m 2m 5m 10m 15m 30m 1h 2h 5h 12h 24h and OFF Default OFF 7 3 2 3 Filter BW Advanced Mode Only Default filter bandwidth of the PIM P receiver is 1 2 kHz which is the o...

Page 49: ...edy is to simply increasing RF power gradually SPU Time Increments 1s Settings range 0sec to 60sec Default 0s Example With a power setting for 43dBm and SPU of 10s it takes 10 seconds to ramp RF power...

Page 50: ...h g r 60dBc to 180dBc in 1dB increments Default 153 dBc 7 3 2 6 Precision Tx Levels Advanced Mode Only ALC Auto Level Control provides an extra boost of Tx Signal accuracy When measuring PIM two RF ca...

Page 51: ...mation For larger display we recommend to use an external monitor As in the Field Mode the Analyzer Mode allows to log data over a period of time In this mode only the settings and measurement values...

Page 52: ...requency mode Works only with RF Power OFF I Reference Line Moves reference line for audible indication of measurements that exceed the limit Same as Green Red threshold of Bar graph in field mode Ran...

Page 53: ...products are displayed as a horizontally moving line where the position indicates the power level over the time This display is very helpful to test immediate PIM variations like loose connections An...

Page 54: ...nus B Carrier display Carrier signal information Frequencies Power levels C Graphical display Shows two traces red yellow of an IM product that are generated by a sweeping the lowest frequency upwards...

Page 55: ...of Bar graph in field mode Range 60 to 200 dBc J Frequency Graphic Display Frequency mode IM signals shown as vertical bar indicating power and frequency Signal colors relate to numeric display K Tim...

Page 56: ...Frequency of up sweep Default lowest Tx frequency the tester can generate C Freq 2 Sweep Start frequency of down sweep Default lowest Tx frequency the tester can generate D Sweep Cycle Time between s...

Page 58: ...in the communication system A discontinuity between cable and module connection can occurs on the line over time because the line is exposed to external environment and on the tower Because VLM VSWR L...

Page 59: ...o Faulty PIM Setup 8 3 1 PIMD Analyzer DFP Measurement Setup Diagram Typical setup in the field is like the figure above DFP Distance to Faulty PIM 8 3 2 Turn the unit on and create a carrier and site...

Page 60: ...reen Release RF and judge the fault with measuring PIM of the transmission line connected to PIMD Analyzer At this time when you push DFP button without measuring PIM a message is displayed like Figur...

Page 61: ...s set currently C Select the cable model to measure D Add or Delete Cable model E Setting Velocity Attenuation F Select the count to measure 1 3 5 10 G Displays the progress of measurement H Displays...

Page 62: ...P Analyzer User s Manual Copyright AWT Global LLC All rights reserved Element Description Display A Input Cable Name B Input Velocity of Propagation C Input Attenuation dB 100m D Save New Cable Data E...

Page 63: ...reduced Please pay attention that if the PIM value is above 75 dBc and you try to measure the distance the module to measure may be damaged and failed A Turn the unit on and push Carrier button in the...

Page 64: ...enter it separately ACL stands for Auto Level Control and maintain the output power as setting value Please keep it on at initial setting When complete push 3 button Return arrow and return to Carrier...

Page 65: ...t screen F In Site Select screen if there is existing data please select what you want see the figure in section H If there is no data push New button to create a Site then an input screen for the sit...

Page 66: ...screen H Like Carrier Select screen you can see the entered site when you are back In the list when you select the Site the background color is changed to yellow and indicates it was selected After s...

Page 67: ...erved Now connect a DUT to a DUT connecting portion of unit and push RF button J IM value is measured and with pushing RF button please stop the measurement 2 Measurement of Distance A Go to a screen...

Page 68: ...surement Count and Cable Model push Start button Measurement Count is a selected value and can reduce the aberration of measured value acquiring the average of total measured values Cable Model is to...

Page 69: ...and the progression status are displayed When you push Stop button to stop the measurement the distance value may not be displayed unless the measurement is more than one D When the measurement is com...

Page 70: ...e Monitor Setup 8 4 1 PIMD Analyzer VLM Measurement Setup Diagram The figure above shows how to setup PIMD Analyzer to measure VLM At this time the VLM optional module should be connected at the front...

Page 71: ...ement Description Display A Displays a frequency to sweep B Start Stop button to measure C Select the cable model to measure D Setting Velocity Attenuation E Select a count to measure 1 3 5 10 F Displ...

Page 72: ...obal LLC All rights reserved J Distance for the cable measured K Return loss for the cable measured L VSWR for the cable measured M Output PDF File N Goes back to the Field Mode screen PIMD Analyzer V...

Page 73: ...P Analyzer User s Manual Copyright AWT Global LLC All rights reserved Element Description Display A Input Cable Name B Input Velocity of Propagation C Input Attenuation dB 100m D Save New Cable Data...

Page 74: ...to measure connection to DUT terminal of VSWR Line Monitor and then push the VSWR button in Field Measurement Mode B Select Measurement Count and Cable Model push Start button Measurement Count is a...

Page 75: ...surement the frequency being measured IM frequency and the progression status are displayed When you push Stop button to stop the measurement the distance value may not be displayed unless the measure...

Page 76: ...bar Moves marker line 1 to the worst value and Frequency or on user s discretion B Mkr2 Marker 2 Marker line 2 is vertical pink bar Moves marker line 2 to the worst value and Frequency or on user s di...

Page 77: ...Moves marker line 1 to the worst value and Frequency or on user s discretion B Mkr2 Marker 2 Marker line 2 is vertical pink bar Moves marker line 2 to the worst value and Frequency or on user s discre...

Page 79: ...History Save Screen Capture Initialize Program Quit System Management Self Test PIMD management Connection check Field Mode offers a subset of Pull Down menus Analyzer mode offers all of them The fea...

Page 80: ...rrier2 MHz Output Level1 dBm Output Level2 dBm Offset dB ALC On Off Screen Mode IM Number Order IM Frequency MHz IM Measure dBc Direction Measure Mode Pass IM Level decision Note PIM P does not suppor...

Page 81: ...t the file name consists of date and time but can be modified by the user The file is stored in jpeg format by pressing the blue save button The stored file has a size of about 150kB In addition to th...

Page 82: ...riggered if the system shows signs of irregular function It sets system values to default values manual settings may be lost Quit 9 1 4 Quit has the same functionality as Exit in the Field Mode The us...

Page 83: ...Name Description HPAx Output RF Output power level should be 0 2 dB within the set limits ALC ON HPAx ON OFF Status of RF Power ON OFF HPAx Temperature Temperature of amplifiers HPAx Over Power Rever...

Page 84: ...ception of Sound On Off it is not required to change these settings Name Description Equipment Selection Not relevant for PIM P since these provide only one frequency band Filter Bandwidth Default 1 2...

Page 86: ...th Especially at higher power levels PIM can be generated due to hysteresis effect of these materials and the non linear voltage to current ratio Contaminations like particles from machining operation...

Page 87: ...intermodulation Frequencies f1 869 MHz and f2 894 MHz are located in the Tx range causing intermodulation fIM3L 844 MHz and fIM3H 919 MHz Both IM products can cause serious interference A visual exam...

Page 89: ...170 MHz 1920 2060 MHz UMTS WCDMA 2100 F06 935 960 MHz 890 915 MHz GSM 900 F07U 728 759 MHz 776 788 MHz LTE US 700 U F07L 728 759 MHz 698 716 MHz LTE US 700 L F07UL 728 759 MHz 776 788 MHz 698 716 MHz...

Page 90: ...dBm 96 dB Measurement Interval 100 to 350 ms Effective IF Bandwidth Operator selectable 300 600 1 2k 2 4k 5k 10k 12k 15k 25k 50kHz Operational Input Power 36 dBm RMS Input Power without damage 15 dBm...

Page 91: ...M P Analyzer User s Manual Copyright AWT Global LLC All rights reserved Dimensions and Weight 11 2 5 Dimensions W D H 501 65 x 298 45 x 457 2 mm 19 75 L x 11 75 W x 18 H in Weight 27 kg 59 5 lb 28 kg...

Page 94: ...els to 43 dBm 20W with ALC ON Switch RF Power ON The PIM Signal s should be at a level below 160 dBc If the reading is higher lower negative value switch RF OFF disconnect connections and re connect t...

Page 95: ...Load Low PIM Cable High Power coupler 30dB coupling with known coupling factor RF Power Meter Install the test set up as shown Connect the Coupler Low PIM Load and Power Meter to the PIM P Analyzer u...

Page 96: ...lyzer In this case contact AWT Service With the reading within limits continue procedure Increase Signal Levels by 1dB Measure power Repeat until Signal Levels are both at 43dBm With offset compensati...

Page 97: ...that the synthesizer module is malfunctioning In this case contact your nearest AWT Service Center With the reading in limits continue procedure Increase on F1 Signal frequency by 1MHz Measure both fr...

Page 98: ...25dBm the receiver does not detect the frequency at all It may be asynchronous In the cases described above contact your nearest AWT Service Center With the reading in limits continue procedure Change...

Page 99: ...to Frequency that results for IM3 product of frequencies F1 and F2 Read the RSSI value on PIM P the value should be equal to 1 dB of the Signal Generator s Power level Change the power level of the S...

Page 101: ...Global LLC All rights reserved Test Cable for 20W PIM tester 1m 3 3ft Low PIM DIN7 16 m DIN7 16 m LIC 3000 160S Load 50W Low PIM DIN7 16 m DIN7 16 f LIT 700 2500G PIM Source for 20W PIM tester through...

Page 103: ...and taxes both inbound and outbound At AWT s option an extended Warranty period may be available for an additional charge Please contact one of our sales offices for further information If an extende...

Page 104: ...n Only AWT as manufacturer has the competence necessary to provide such alignment Documentation Together with the calibrated instrument the user receives documents which certify and describe the statu...

Page 110: ...LC All rights reserved Contact Consult the following contact for the technical support as needed AWT Global LLC 2001 Route 46 Waterview Plaza Suite 310 Parsippany NJ 07054 Telephone 1 973 321 3423 Fax...

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