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Omnia-6 User’s Guide

Draft Version

29

20.0 LEAKAGE

MEASUREMENT

If you press the

key you reach the Leakage menu for the measurement of losses in coaxial cables. It

is possible to set the working frequency.

20.1 Leakage Setup

Keep the

key pressed for two seconds to reach the “Leakage Setup” menu, where it is possible to

select the antenna type, the antenna factor, the signal distance and minimum threshold.

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Содержание OMNIA-6

Страница 1: ...OMNIA 6 USER S GUIDE PROFESSIONAL ANALOG DIGITAL CATV QAM DVB C PALM TOP ANALYZER FREQUENCY 5 870 MHz LEVEL POWER 15 to 126 dBuV 45 to 66 dBmV 93 to 18 dBm DRAFT VERSION Subject to change without notice ...

Страница 2: ...Omnia 6 User s Guide Draft Version 2 Code UG OMNIA 6 Title OMNIA 6 User s Guide Edition 1 60 6 0 EN 1 06 ...

Страница 3: ...ODES OF OPERATION p 13 6 1 Measure mode p 13 7 0 ANALOG CHANNELS PAL p 14 8 0 QAM CHANNELS p 14 9 0 VSB CHANNELS p 15 10 0 QPSK DATA CHANNELS p 15 11 0 SCRAMB CHANNELS p 16 12 0 FM CW CHANNELS p 16 13 0 BARS MODE p 17 13 1 Reference level p 17 13 2 Frequency span p 17 13 3 dB div p 18 13 4 Channel marker p 19 14 0 DISPLAYING AUDIO LEVELS p 20 15 0 TILT MODE p 21 16 0 SPECTRUM MODE p 22 16 1 Span p...

Страница 4: ...24 0 VOLTMETER MODE p 37 25 0 HOW TO MANUALLY CREATE A CUSTOM PLAN p 38 25 1 How to copy source plan to destination plan p 38 25 2 How to edit a channel plan p 40 25 3 Modifying channels p 40 25 4 Selecting channels p 40 25 5 Selecting channel types p 41 25 6 Selecting frequencies p 42 25 7 Symbol rate p 42 25 8 Level offset p 43 25 9 Deleting channels p 44 25 10 Adding channels p 44 25 11 Print p...

Страница 5: ...tal Signal quality test PASS MARG FAIL Spectrum invertion automatic Full constellation 8VSB ANALOG TV Frequency band TV and Radio 5 870 MHz Frequency Program Channel reading on graphics display Frequency resolution TV and Radio 62 5 KHz Input impedance 75 ohm interchangeable F connector BNC IEC N opt Level measurement dynamic range at RF input 15 to 126 dBµV or 45 to 66 dBmV or 93 to 18 dBm select...

Страница 6: ...ation at 25 C 3 4 hours in analog TV mode and 3 4 hours in digital depending on how the backlight display is used Battery charge indication by LED monitoring Fast battery recharge time 4 hours approx with electronic control Instrument size H 30 x W 11 X D 6 cm Instrument weight 0 8 Kg with batteries Casing structure shock proof plastic ABS RS232 standard serial interface port available for downloa...

Страница 7: ... low an audible warning is heard and a low battery message appears on the display 2 2 Power On Turn on the meter by momentarily pressing the power reset key 2 3 Power Off Turn off the meter by pressing and holding the power reset key for three seconds Pressing and holding for ten seconds resets the meter and restores normal operation 2 4 General Instructions for Navigating On Screen Selections The...

Страница 8: ...ometimes appear to move in the wrong direction Figure 2 Graphic Screen Navigation With the selector tool beside it the user can press and update the values on the selected item A solid arrow will appear beside the current value Pressing the arrow keys will then allow the user to change the value Pressing again will keep the current value and deactivate the ability to update the item The solid arro...

Страница 9: ...uide Draft Version 9 Figure 4 Graphic Enter Key Use 3 0 INSTRUMENT SETUP Pressing and holding for 2 seconds takes you to the configuration menu Use and keys to select the function required Press to choose the selection ...

Страница 10: ...100 scale with a higher number indicating a darker contrast 4 2 Units Units of measurement offer dBµV or dBmV options 4 3 Shutdown This sets the automatic shut down time Two options are available Off the instrument only turns off manually or 5 minutes the instrument turns off automatically when no key is pressed for the stated time 4 4 Light This function allows you to select the time duration of ...

Страница 11: ...on Menu Figure 6 Clock Menu 4 9 File Manager This area is used to delete storage files created by the user Files that can be deleted are Custom Plans The first plan in the system may not be deleted but can be edited using internal functions 4 10 Self Test This function allows you to carry out a health check on the parts which make up the Omnia 6 Press any key to quit the diagnostic test display Th...

Страница 12: ...to confirm Confirm the OK selection using the key WARNING when you confirm all the other previously saved Loggers will be cancelled so that the numbering of the new loggers starts from 1 N B Before setting the instrument s turn on START time you must set the instrument s clock see paragraph 3 0 and 4 8 If you confirm the selection all the previously saved loggers will be cancelled During this func...

Страница 13: ...you a choice between active plans that exist in the system Press the key when the desired ACTIVE PLAN name is selected Use the and keys to select the proper plan for the given cable system Press again to choose the selection Finally use the key to select the CONFIRM item and press to activate the selected plan name Figure 7 Active Plan Display ...

Страница 14: ...otal Errors and peak Val ley measurements are available Navigation through different channels can be accomplished by pressing the key when the selector tool is on the Channel Using the keys will cycle all available channels in the Plan Figure 8 Channel Selection Using the and keys with the Page item selected allows you to navigate in the different pages available for each channel There are three p...

Страница 15: ...he third page performs a Hum measurement Using the and keys navigate to the HUM item and select from the available measurement options 50 Hz 60 Hz 100 Hz 120 Hz 10 2000 Hz 8 0 QAM CHANNELS Figure 10 QAM Measurement Display Pages The Power Old is the last power measurement made on the channel before carrying out MER Before BER and Post BER calculations Going to Page 2 using standard navigation prov...

Страница 16: ...t on the channel before MER After BER calculations Going to Page 2 using standard navigation provides a real time update of the average channel power Peak VAL ley indicates in band flatness within the indicated digital channel 10 0 QPSK DATA CHANNELS The device gives real time updates of the average power ...

Страница 17: ...aft Version 17 11 0 SCRAMB CHANNELS The device gives real time updates of the Video Carrier Level Audio Carrier Level and the Video Audio difference 12 0 FM CW CHANNELS The device gives real time updates of the carrier level ...

Страница 18: ...r the current task 13 1 Reference Level The reference level is based on the signal levels present within the current bar parameters The reference level can be adjusted in 0 1 dB steps using the described navigation techniques 13 2 Frequency Span Span in Bars Mode adjusts the number of channels displayed on the sweep Choices available are 9C 19C 29C 59C and 120C Navigate to the SPAN item and use th...

Страница 19: ...the dB div scaling 1 5 10 and 20 dB div Use standard navigation to select and adjust the dB div as shown below For convenience level scales for the 10 dB div and 5 dB div appear to the left and right of the display on the permanently attached bezel Figure 12 Changing dB per Division ...

Страница 20: ...r You can display up dated levels for any channel selected by the marker Press at the Marker Channel then use the and keys to select a different channel as shown below Press to re centre the display at the new marker channel Figure 13 Changing Marker Channel ...

Страница 21: ...sion 21 14 0 DISPLAYING AUDIO LEVEL Audio Levels in the Bars Display integrate with the video level bars as hollow tic marks Press the key to show all audio levels Press the key again to remove them Figure 14 Displaying Audio Levels ...

Страница 22: ...cribed in BARS You can also display audio levels using the and keys as described in BARS Mode You can also see the levels by pressing the TILT key To remove them simply press TILT again Figure 15 Tilt Mode Display Channels displayed for TILT can be easily changed by holding the key for 2 seconds then using standard navigation techniques described earlier in this document Figure 16 Tilt adjustment ...

Страница 23: ...on techniques Use the anti clockwise and clockwise keys to cycle through items for modification then press to activate the selection option Figure 17 Spectrum Mode Display 16 1 Span Pressing when the selector tool is at the SPAN item enables the use of the and keys to select spans of 2 M Hz 5 M Hz 7 M Hz 10 M Hz 20 M Hz 50 M Hz 100 M Hz 200 M Hz 500 M Hz or FULL 870 MHz Span in MHz Marker Channel ...

Страница 24: ...e levels for any frequency in the indicated SPAN Pressing will not re centre the display to the marker frequency Scrolling past the edges of the current graph is prohibited 16 4 Reference Level The reference level is based on the signal levels present within the current Spect parameters The graph reference level can be adjusted in 0 1 dB steps using the described navigation techniques 16 5 Marker ...

Страница 25: ...tion 64 QAM 128 QAM 256 QAM 8 or 16 VSB The instrument allows you to select which quadrant to display and to ZOOM in to get a higher resolution image of the dot displacement at corner locations within the selected quadrant Figure 19 Sample 64 QAM and 256 QAM displays Using standard navigation techniques the user can change the zoom factor ALL 1 4 1 8 1 16 and quadrant I II III IV viewed A 64 QAM s...

Страница 26: ...Omnia 6 User s Guide Draft Version 26 For changing Quadrant Figure 21 Selecting Quadrant ...

Страница 27: ...ctrum from 5 65 MHz A peak hold provides temporal information about peaks detected in a particular location The user can set the START and STOP FREQUENCIES the REFERENCE LEVEL the SWEEP TIME and the dB div Figure 22 Ingress Mode Display Sweep Time Reference Level Marker Freq Level Marker Frequency dB division ...

Страница 28: ...ation techniques 19 2 Sweep Time The Ingress SWEEP TIME defines the length of one START frequency to STOP frequency update The SWEEP TIME selection determines the dwell time at each frequency step Standard navigation techniques allow value selection 50 ms0 1s 0 3s 0 5s 1s 2s 5s 10s 20s 50s 19 3 dB div Four choices exist for changing the dB div scaling 1 5 10 and 20 dB div Use standard navigation t...

Страница 29: ...eakage menu for the measurement of losses in coaxial cables It is possible to set the working frequency 20 1 Leakage Setup Keep the key pressed for two seconds to reach the Leakage Setup menu where it is possible to select the antenna type the antenna factor the signal distance and minimum threshold ...

Страница 30: ...n will hold the data There are 255 possible Loggers with actual availability dependent upon the amount of remaining memory An available memory readout appears at the bottom of the screen display CAUTION If a data LOGGER already exists on the system and the LOGGER number is again user defined the original data will be overwritten without warning Press at the LoggerName selector tool then use the an...

Страница 31: ...o select one of 10 available zoom storage file locations CAUTION If a zoom file already exists no warning will be given for overwriting so take care in selecting a zoom file Figure 26 Storing a Zoom Sweep Press after moving the selector tool to SAVE and the file will be stored A snapshot of the store will now be present Press again to return to a live zoom update ...

Страница 32: ...lect an ingress file for storage There are 10 ingress files available CAUTION If an ingress file already exists no warning will be given for overwriting so take care in selecting an ingress file Press after moving the selector tool to SAVE and the file will be stored A snapshot of the store will now be present Press again to return to a live ingress update ...

Страница 33: ...file for storage There are 10 ingress files available CAUTION If an ingress file already exists no warning will be given for overwriting so take care in selecting an ingress file Figure 27 Storing a Leakage File Press after moving the selector tool to SAVE and the file will be stored A snapshot of the store will now be present Press again to return to a live ingress update ...

Страница 34: ...esired logger and move the selector tool to the RECALL item Now press Once you select an appropriate Logger file the device will direct you back to Measurement Mode to view all data Data such as MER BER may not display if they were not enabled during the store function for the particular Bin Press to return to live data Figure 28 Logger Recall Menu N B When you recall a Data Logger it is possible ...

Страница 35: ...file the device will produce a snapshot of the stored data Press to return to live data Figure 29 Recall Spectrum File 22 3 Recalling Ingress Data While in Ingress Mode pressing displays Ingress files available for recall Using standard navigation select the desired ingress and move the selector tool to the RECALL item Now press Once you select an appropriate Ingress file the device will produce a...

Страница 36: ...ays Ingress files available for recall Using standard navigation select the desired ingress and move the selector tool to the RECALL item Now press Once you select an appropriate Ingress file the device will produce a snapshot of the stored data Press to return to live data Figure 31 Recall Leakage File ...

Страница 37: ...32 Sound Carrier Display While in Sound Carrier Mode press to activate the audio volume control Use the and keys to increase or lower the volume Figure 33 Loudness Display 23 1 Radio Press the key for two seconds to activate Radio mode If a radio channel is present in the chosen plan you can hear the selected channel Press UP or DOWN to select and hear a RADIO channel ...

Страница 38: ...C as well as DC voltages that may be present at the test point With the instrument connected to the test point in question press to activate voltmeter mode The display shows the voltage type and the value in the appropriate readout area The selector tool is not active in this mode Figure 34 Voltmeter Display ...

Страница 39: ...e i e Euro IND UK HK etc and any custom plans already present in the device The DESTINation custom plans are labelled at the factory as PLAN 1 2 3 4 5 and 6 Press Figure 35 Select Source Plan It is possible to insert the channel search mode by choosing either MANUAL or AUTO In MANUAL each channel is inserted manually whereas in AUTO all the channels with a level above the set threshold THRESH are ...

Страница 40: ... is on CONFIRM begins the copying process A WAIT message will be shown with a progress bar at the bottom of the screen After the copy process is complete the device will display the Edit Channel Plan s Menu Note You can modify an existing custom plan in the device by copying the custom plan to itself For example choose Plan 2 in the SOURCE and Plan 2 in the DESTINATION ...

Страница 41: ...s selected Standard very little modification is required to core analogue channels included in the plan except for additional offsets from standard or scrambled channels The main adjustment required to be made to the plan is to properly set any digital channels existing in the cable system 25 4 Selecting Channels Use standard navigation to navigate to the channel required for modification as shown...

Страница 42: ...al North American QAM64B J83 Annex B with 64 QAM modulation typical North American QAM32B J83 Annex B with 32 QAM modulation typical North American QAM16B J83 Annex B with 16 QAM modulation typical North American QAM256A J83 Annex A with 256 QAM modulation typical European QAM128A J83 Annex A with 128 QAM modulation typical European QAM64A J83 Annex A with 64 QAM modulation typical European QAM32A...

Страница 43: ...the centre frequency for a digital carrier is not correct the measurements made by the unit may be incorrect or function improperly Figure 40 Select Frequency 25 7 Symbol Rate When a digital type is selected e g QAM256B QAM64B the symbol rate item appears on the screen Use standard navigation to select the Symbol Rate and modify using or The correct symbol rate must be entered in order for the dig...

Страница 44: ...each video carrier measurement made on the channel Use standard navigation to select the Offset item and adjust accordingly using or Options range from 10 0 to 10 0 dB Figure 42 Select Level Offset Once you have finished setting the options type frequency symbol rate offset described below navigate the selector tool to REPLACE and press Figure 43 Replace Channel ...

Страница 45: ...ocation in the current plan For example you have channels 79 and 81 allocated but channel 80 is not defined If that is the case using standard navigation change the channel to the adjacent channel below or above the channel to be added Now change the frequency to the desired frequency using or As the frequency moves into the empty 6 MHz slot the REPLACE and DELETE items will disappear and the ADD ...

Страница 46: ...rsion 46 25 11 Print Press the key to reach the print menu where it is possible to choose the type of program required LIVE STORED and the PLANName To print select and press To print the screen display press the key for two seconds ...

Страница 47: ... the return procedure for your analyzer b When returning the meter always send it with the following documentation attached the fully compiled FAULT IDENTIFICATION FORM a transport document and the eventual request for an estimate of repair costs c Please note that the request for an estimate of repair costs must be submitted upon return of the analyser with a written note If the repair cost estim...

Страница 48: ...Omnia 6 User s Guide Draft Version 48 N NO OT TE ES S ...

Страница 49: ...INGRESS measurement activation key 9 UP arrow key 10 LEAKAGE measurement activation key 11 Chs Plan key 12 DOWN arrow key 13 SAVE key 14 PRINT key 15 RECALL key 16 Voltmeter activation key 17 Power ON OFF key 18 Mains AC LED mains connection 19 Meas key 20 Constellation function 21 ENTER key 22 BARS function key 23 TILT measurement key 24 SPECTRUM key 25 TV SYNC audio LED 26 Audio selection key 27...

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Страница 54: ...Omnia 6 User s Guide Draft Version 54 ...

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