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DTVLINK-T2 Operation Manual 

24 

3.3.2 Digital channel measurement 

DTVLINK-T2 is able to measure POWER, MER and BER. 
As figure 3-3-10.   

 

Figure3-3-10 

CH  INFO  (

):  Press  this  button  will  display  the 

channel  information  of  the  current  channel,  as  figure 
3-3-11. The channel  parameters  also can be modified 
in this screen. 

Summary of Contents for DTVLINK-T

Page 1: ...O Op pe er ra at ti io on n M Ma an nu ua al l D DT TV VL LI IN NK K T T2 2 D DV VB B T T2 2 S Si ig gn na al l A An na al ly ys si is s M Me et te er r V Ve er r 1 1 2 20 0 ...

Page 2: ... AD INSTRUMENTS AD INSTRUMENTS Part No DTVLINK T2 All rights reserved ...

Page 3: ...ctly according to the manual AD INSTRUMENTS shall have no responsibility for any defect or damage caused by improper use and maintenance or for any product which has been repaired or altered by any one others not AD INSTRUMENTS or our authorized service center When the meter need to be repaired or calibrated Please contact AD INSTRUMENTS or our local distributors in your territory ...

Page 4: ... 1 8 Voltage Measurement 5 1 9 MER Versus Carriers Error Marcador no definido 1 10 ECHOES Error Marcador no definido 1 11 Multiple User Channel 5 1 12 File Management 5 1 13 Intelligent Power Management 5 1 14 DVB C channel measurement 6 1 15 BER Statistics 6 2 Introduction 7 2 1 Appearance 7 2 2 Keypad 8 2 2 1 Soft keys 8 2 2 2 Shortcut keys 8 2 2 3 Character Digit Input 8 2 3 Display Description...

Page 5: ...r Description 37 3 5 2 Soft Keys Operations 37 3 6 MER Versus Carriers 38 3 6 1 Soft Keys Operation Error Marcador no definido 3 7 ECHOES Error Marcador no definido 3 8 Spectrum Scanning 39 3 8 1 Soft Keys Operation 40 3 8 2 Parameter Setting 41 3 9 Tilt Level List Measurement 45 3 9 1 Tilt Graph Mode 47 3 9 2 Tilt List Mode 48 3 10 Channel Scanning 50 3 10 1 Soft Keys Operation 51 3 11 HUM Measur...

Page 6: ...3 4 3 GENERAL 74 4 3 1 Shutdown Time 74 4 3 2 Language Selection 74 4 3 3 Date and Time 75 4 3 4 Files Status 76 4 3 5 Option 77 4 3 5 1 Enable Optional Function 78 4 3 5 2 Disable Optional Function 80 4 4 Measurement Parameter Setup 82 4 4 1 Level Unit 82 4 4 2 Level Calibrate 82 4 4 3 Limit Setup 83 4 4 4 Auto Diagnosis 87 4 4 5 Voltage and temperature 88 4 4 5 1 Battery Voltage 88 4 4 5 2 Trunk...

Page 7: ...89 4 5 Channel Plan 91 4 5 1 Select User Plan 91 4 5 2 Channel Number Type 92 4 5 3 Learn User Plan 92 4 5 4 Edit User Plan 93 5 Power Supply 95 5 1 Battery 95 5 2 Charging 96 6 Port 97 7 Specification 98 8 Standard Accessories 103 ...

Page 8: ......

Page 9: ... system measurement including digital TV and analog TV This model can measure and display most indexes of Digital TV Channel Power MER BER Constellation Diagram Analog TV Single frequency Level Carrier Level of Full Channels Spectrum HUM Also DTVLINK T2 can measure Frequency Spectrum Scanning Trunk Voltage and Battery Voltage DTVLINK T2 has RS 232 port for communicating with PC software TOOLBOX wh...

Page 10: ...2 Features QAM and QPSK Test Level Test Constellation Diagram Channel Scanning Spectrum Scanning Tilt Test Limit Test HUM Voltage Measurement Multiple User Channel Plan Setup File Management Multi languages support BER Statistics ...

Page 11: ...s of QAM and QPSK Here you can get Channel Power MER and BER and Constellation Diagram NOTE For DVB T channels MER and BER test is only in QPSK and QAM 16 64QAM Modulation Mode 1 2 Constellation Diagram For DVB T channels Constellation diagram function supports modulation modes of 16QAM 64QAM and QPSK Here you can get Channel Power MER CBER VBER CARRIER and Constellation diagram 1 3 Tilt Level Lis...

Page 12: ...m in out and marker function make your observation easier 1 6 Spectrum Scanning DTVLINK T2 has spectrum function which provides several spans and two sample modes AVG and PEAK In order to detect and know the interference it has peak hold function which shows the difference between peak spectrum and current spectrum by marker and double marker function 1 7 Limit Measurement DTVLINK T2 can fast chec...

Page 13: ...xed channels Also they can be switched easily So it is very suitable for multi network maintenance 1 10 File Management DTVLINK T2 can store the results of channel level test constellation test tilt test channel scanning spectrum scanning and HUM test for analogue TV channel User can manage and analyze these files via meter or PC 1 11 Intelligent Power Management DTVLINK T2 with full charged is ab...

Page 14: ...t Channel Power MER and BER and Constellation Diagram NOTE For DVB C channels MER and BER test is only in QAM 16 32 64 128 256QAM Modulation Mode 1 13 BER Statistics For DVB C channels you can get MER BER ES SES COR UNCOR and etc 1 14 DVB T2 channel measurement DTVLINK T2 supports accurate signal level test in DVB T2 signals mode For DVB T2 channels DTVLINK T2 supports modulation mode of QAM Here ...

Page 15: ...DTVLINK T2 Operation Manual 7 2 Introduction 2 1 Appearance Get acquainted with the appearance before use Serial Port RF Interface LCD Keyboard Charge Status POWER Charge Interface ...

Page 16: ...2 2 2 Shortcut keys There are three keys below the three soft keys including Press key can directly back to menu screen and key is used as different functions in different screen 2 2 3 Character Digit Input Entering Numeric Values Within several displays you must enter numeric values Here press the number buttons to enter the desired value directly Then press ENTER key to enter the value into the ...

Page 17: ...r which you press the same button repeatedly to scroll through the letters associated with the button To enter a second letter or number using a different button you can go directly to the second button for entry If you want to enter a second letter or number using the same button as the preceding character you must press the key to shift the DTVLINK T2 control to a new number or letter NOTE If yo...

Page 18: ...DTVLINK T2 Operation Manual 10 2 3 Display Description ...

Page 19: ...u Display Figure3 1 1 The Figure 3 1 1 Display the Main Menu which include all of thefunction icons Soft Keys Enter the selected shortcut interface Switch the selected shortcut on the left direction circularly Switch the selected shortcut on the right direction circularly ...

Page 20: ... T2 Operation Manual 12 Function keys Switch the selected shortcut on the up direction circularly Switch the selected shortcut on the down direction circularly The selected shortcut will displays in highlight ...

Page 21: ... system automatically and save in this channel plan The User Channel Plan includes three elements as follows Channel number Channel format TV DIGI Carriers frequency video and audio The following is the step of setup user channel plan 1 Connect the instrument with the cable system or signal receiving antenna 2 Press return to main menu and select the Setup shortcut like Figure3 2 1 then press into...

Page 22: ...DTVLINK T2 Operation Manual 14 Figure3 2 1 Then press the or select the CHANNEL PLAN item as Figure3 2 2 Figure3 2 2 Now press into Figure3 2 3 CHANNEL PLAN then press select the user channel plan ...

Page 23: ...TVLINK T2 Operation Manual 15 Figure3 2 3 3 Press or to select the LEARN CHANNEL PLAN item and press the LEARN CHANNEL PLAN function displays as Figure 3 2 4 Figure3 2 4 Press to select one channel type ...

Page 24: ... to creat your user channel plan For a while new user plan will be saved automatically NOTE The analog channels with level higher than 45dBμV and digital channel with power level higher than 32dBμV will be enabled in standard channel plan Only the enabled channels will be displayed in each measurement interface After setup your user channel plan you can also enable or disable channels When the lea...

Page 25: ...DTVLINK T2 Operation Manual 17 3 3 Level Measurement Press return to main menu press the or to select the LEVEL shortcut as Figure3 3 1 Then press Figure3 3 1 ...

Page 26: ... 3 3 2 Now if you want to do any test in this function you have to create a valid channel with press Figure3 3 2 The channel list will display as figure 3 3 3 Press or to select the channel and here Press or will page up or page down the channel list Then press into channel information as figure 3 3 4 ...

Page 27: ...ion Manual 19 Figure 3 3 3 Figure 3 3 4 Press or to select the channel parameters if the selected parameter could be changed press to change As the figure 3 3 4 ensuring the STATUS is enable the channel will be enabled ...

Page 28: ... Analogue channel measurement If the current channel is a valid analogue channel The Level function will display as Figure3 3 5 three test results are displayed in the screen include Video audio and V A Video Level Audio Level Figure3 3 5 ...

Page 29: ...n Figure 3 3 6 ONE CHN ADJ CHN The user can switch display mode between One Channel and ADJ Channel One Channel Mode The histogram shows the video and audio of current channel only as figure 3 3 5 ADJ Channel Mode The histogram shows the video and audio of current channel and also show the level of two adjacent channels with gray color if the adjacent channels are valid Refer to figure 3 3 7 ...

Page 30: ...3 7 and is used for switch channels circularly If the next channel is digital channel the screen will be changed Refer to chapter 3 3 2 Press this button to next page as figure 3 3 8 the user can press this button again to return Figure 3 3 8 ...

Page 31: ... frequency measurement interface as figure 3 3 9 the user can modify the frequency press this button again to return and is used for switch frequency circularly SAVE Press this button to save the result of level test Figure 3 3 9 REFRESH Press this button can test again ...

Page 32: ...l measurement DTVLINK T2 is able to measure POWER MER and BER As figure 3 3 10 Figure3 3 10 CH INFO Press this button will display the channel information of the current channel as figure 3 3 11 The channel parameters also can be modified in this screen ...

Page 33: ...between One channel and ADJ channel One channel mode The histogram shows the Power of current channel only ADJ channel mode The histogram shows the Power of current channel and also show the Power of two adjacent channels with gray color if the adjacent channels are valid Refer to figure 3 3 12 ...

Page 34: ...DTVLINK T2 Operation Manual 26 Figure 3 3 12 Press this button to next page as figure 3 3 13 the user can press this button again to return Figure 3 3 13 ...

Page 35: ...l the screen will be display as figure 3 3 10 FREQ Press this button into frequency measurement interface as figure 3 3 14 In this mode the user can easily modify the central frequency but the other parameters of digital channel will be the same as channel mode press this button again to return Figure 3 3 14 SAVE Press this button to save the result of level test REFRESH Press this button can test...

Page 36: ... the screen to indicate the quality of current channel as the figure 3 3 5 and figure 3 3 10 the limit value to judge the quality of channel can be showed in the measurement setup menu and also can be modified And also it can disable the judge of channel quality of in the measurement setup menu ...

Page 37: ...ce and press or choose CONSTEL icon and then press to enter constellation measurement DTVLINK T2 constellation diagram function supports modes of QAM and QPSK Here you can get channel POWER MER BER CBER and VBER and constellation diagram Constellation diagram shows as figure 3 4 1 Figure 3 4 1 ...

Page 38: ...isplay the current channel information as figure 3 4 2 and user can modify all of the parameters in this menu Figure 3 4 2 FREQ Press this button to display the current frequency POWER MER BER CBER and VBER and constellation diagram as figure 3 4 3 press this button again to return ...

Page 39: ...DTVLINK T2 Operation Manual 31 Figure 3 4 3 Press this button to next page as figure 3 4 4 Figure 3 4 4 ...

Page 40: ...keyboard as figure 3 4 5 Note Here the MER just measure one carrier which you modified by the keyboard Or it is the average MER for all carriers when the CARR display ALL as figure 3 4 4 Press this button again to return to figure 3 4 4 Figure 3 4 5 Press this button to next page as figure 3 4 6 ...

Page 41: ...t quadrant on clockwise direction ZOOM IN ZOOM OUT Press this button and switch the status of constellation diagram between zoom in and normal mode Press zoom in key again the selected quadrant will be zoom in and the zoom in flag will be displayed on the top of the screen as figure 3 4 7 ...

Page 42: ...DTVLINK T2 Operation Manual 34 Figure3 4 7 and are used for switching digital channels circularly ...

Page 43: ...DTVLINK T2 Operation Manual 35 Note This function only supports digital channels if the current user plan doesn t have any digital channels the screen will show as figure 3 4 8 Figure 3 4 8 ...

Page 44: ...o return to main menu interface and press or choose BER statistics icon and then press to enter statistics measurement DTVLINK T2 is able to make BER statistics during set time the user can get MER BER ES SES COR UNCOR SUM bits and TOTAL BER as figure 3 5 1 Figure 3 5 1 ...

Page 45: ...Serious error seconds During 1s if the result of the number of errors that can not be correct divided the total bits 1 1E 3 SES plus1 COR Corrected error bits UNCOR Uncorrected error bits SUM Total bits TOTAL PRE BER COR UNCOR SUM TOTAL POST BER UNCOR SUM 3 5 2 Soft Keys Operations CH INFO Press this button can check the current channel information and user can modify all of the parameters in this...

Page 46: ...ime 5 minutes 15 minutes 30 minutes 60 minutes 2 hours 6 hours 12 hours 24 hours and 48hours START STOP Press this button will start or stop the statistics process and the screen will show as figure 3 5 2 Now any key pressed can not be respond except HOME F3 and POWER until the end of the statistics time Figure 3 5 2 ...

Page 47: ... press or to select the SPECT icon and then press to enter spectrum function DTVLINK T2 s spectrum function supports double marker display and peak hold function as Figure 3 6 1 Here you can set up span frequency 5MHz 1052MHz sampling mode and etc Press can modify the cursor location Figure3 6 1 ...

Page 48: ...parameter can be modified by press or or by figure Input directly AUTO Press AUTO soft key to adjust reference level and scale quickly The meter will automatically adjust them to most optimal state Press this button to change the soft menu as figure 3 6 2 the user can press this button again to return Figure 3 6 2 ...

Page 49: ... you can continue the scanning by press it again SAVE Press SAVE soft key to save the result of scan test 3 6 2 Parameter Setting You can modify or adjust measurement parameter Press can highlight the selected parameter and then press or or press the character digit keys directly Figure3 6 3 ...

Page 50: ...e sampling mode AVG or PEAK AVG sample average mode the display result of each point will be an average of several sample value It will be faster than the PEAK mode and also if you want to measure the noise of the system you need to select this mode PEAK positive peak mode the display result of each point will be peak value of several sample value It will be necessary to select this mode to measur...

Page 51: ...ng the CENT parameter you can input the center frequency by the character digit keys Note In Spectrum Scanning function any frequency from 5 to 1052MHz can be input SPAN After selecting the SPAN parameter press or to adjust the span among 2 5MHz 6 25MHz 12 5MHz 25MHz 62 5MHz and FullBand MAX After selecting the MAX HOLD parameter if you select the MAX HOLD by pressing or the ...

Page 52: ...int MARKER A After selecting the MARKER A parameter the red marker A becomes active marker pressing or can move the red marker to the wanted view point MARKER B After selecting the MARKER B parameter the purple marker B becomes active marker pressing or can move the purple marker to the wanted view point ...

Page 53: ...f cable system DTVLINK T2 can get levels of 12 channels and observe the measurement result and graph easily Press to return to main menu interface and press or and choose FAV TILT icon then press to enter Tilt Level List measurement Please select at least four channels to do tilt test otherwise it will pop up one dialog box as Figure 3 7 1 Figure 3 7 1 ...

Page 54: ...ss or to change the highlight line and then press the to select or unselect the channel Here the and button have been defined to page up and page down The means this channel is selected If you want to cancel this selection please press again and will disappeared The channel No of all channels selected will be saved and displayed at the left blocks Figure3 7 2 ...

Page 55: ...ace and press the again to enter the Tilt Level List measurement Now the Tilt measurement can be continued 3 7 1 Tilt Graph Mode In tilt test interface the channels will be displayed as histogram and test result will be displayed at the bottom of screen as Figure 3 7 3 Figure 3 7 3 ...

Page 56: ...ure 3 7 4 SAVE Press this button to save the result of tilt test SETUP When testing press this button to enter into Figure 3 7 2 to re select tested channels 3 7 2 Tilt List Mode In figure 3 7 4 you press to switch the modes between Tilt Graph and Tilt List In Tilt List mode you can easily get level value of the channels tested ...

Page 57: ...s this button to enter into Figure 3 7 2 to re select tested channels Here the and button is defined to switch the tilt channel which s test result will be displayed at the bottom of screen A PASS or FAIL will be displayed at the bottom of the screen the Limit value can be modified in Measurement Setup Refer to 4 4 3 And also we can disable the judge of quality of channel in the Measurement Setup ...

Page 58: ...TV system quickly Press to return to main menu interface and press or to select the SCAN icon and then press to enter Channel Scanning function as Figure 3 8 1 The scanning graph of current user plan is displayed on the screen a slider in red color shows the current scanning channel Figure 3 8 1 Green color represents video level of analogue channels ...

Page 59: ...r location Then the parameter which highlighted on the yellow color background can be modified by or MARK In figure 3 8 1 press the or and the marker with red color will move left or right And the test result of channel at the position of marker will be displayed on the bottom of the screen REFERENCE LEVEL Press TAB to select the REF and then it can be modified by press or the range of reference l...

Page 60: ...els in the screen 5 Max display 255 channels in the screen SCALE Press TAB to select the SCALE and switch between 1dB 2dB 5dB and 10dB by pressing or AUTO Press AUTO soft key to adjust reference level and scale quickly The meter will automatically adjust them to most optimal state Press this button to next page as figure 3 8 2 the user can press this button again to return ...

Page 61: ...DTVLINK T2 Operation Manual 53 Figure 3 8 2 STOP Press STOP soft key the scanning will stop and you can continue the scanning by pressing it again SAVE Press this button to save the result of scan test ...

Page 62: ...ogue channel Press to return to main menu interface and press or to select the HUM icon and then press to enter HUM function Show as Figure 3 9 1 HUM modulation is also named power hum modulation distortion which caused by low frequency interference of the power It is 50Hz in China Figure 3 9 1 ...

Page 63: ...Press to switch the frequency of system power between 50Hz and 60Hz as figure 3 9 2 Figure 3 9 2 SAVE Press this button to save the result of HUM test or are used to switch analogue channels circularly Also you can input the channel number using the character digitkeys ...

Page 64: ... 3 10 1 Figure 3 10 1 DTVLINK T2 is able to detect cable TV system rapidly and check out the number of unqualified channels and the reason of unqualified channels The amplitude of each channel of selected user plan is checked one by one The channel number video level and audio level whether or not acceptable will be shown NOTE DTVLINK T2 checks the analog channel only in Limit Test mode ...

Page 65: ... the limit test scanning the general test results of cable system will be listed The test items are consist of minimum video level maximum video level maximum delta video level minimum V A maximum V A and maximum ADJ channels Refer to figure 3 10 2 Figure 3 10 2 ...

Page 66: ...DTVLINK T2 Operation Manual 58 Press to list as figure 3 10 3 Figure 3 10 3 Press to view the graph as figure 3 10 4 Figure 3 10 4 ...

Page 67: ...button again to return Figure 3 10 5 RETEST Press RETEST to retest SAVE Press SAVE soft key to save the result of Limit test 3 10 2 Limit Edit You can edit the limit setup in SETUP First enter into SETUP menu press into MEASUREMENT Setting highlight LIMIT SETUP by or the screen displays as figure 3 10 6 ...

Page 68: ... Manual 60 Figure 3 10 6 If you want to change a parameter press to select the parameter press or to change Press to LOAD DEFAULT and then press you can select the default To view the detailed setting please refer to 4 4 3 ...

Page 69: ...Figure3 11 1 In the interface of the R PATH function the default parameter set is Start frequency 5MHz Stop frequency 45MHz Reference 40dBuV Scale 5dB div Demodulation mode peak mode In this function to view the detailed soft key instruction please refer to 3 6 1 and 3 6 2 Note In Return Path Spectrum function you can only setup the range of return path frequency by 5MHz 45MHz and 5MHz 65MHz ...

Page 70: ...ILES icon and then press to enter FILE management function as Figure 3 12 1 Figure 3 12 1 DTVLINK T2 has independent memory space to store the measurement data which includes level scan tilt limit spectrum and HUM test results 3 12 1 File Directory In file list menu All saved files was list with file names date and time ...

Page 71: ...IT and HUM at least one of them Press and select the FILE icon and then press the file list menu will display as figure3 12 2 Figure 3 12 2 NEW press this button a SAVE THE FILE dialog show as figure 3 12 3 DTVLINK T2 will give a default name for new file also you can rename it using thecharacter digitkeys ...

Page 72: ...n Manual 64 Figure 3 12 3 After rename the new file press or to DATA LIST all the parameters could be saved have been listed and the default status is that all parameters have been selected as figure 3 12 4 Figure 3 12 4 ...

Page 73: ...a item as figure 3 12 5 Figure 3 12 5 SAVE Press this button to finish saving a file after finished save file the screen will return file list menu as figure 3 12 2 3 12 3 Read File Press or to select the file you would like to read and then press to Load the file LOAD THE FILE dialog will display as figure 3 12 6 ...

Page 74: ...6 Normally the data items can be opened using LIST mode Press or to select the data item and then press LIST to list a data item in LIST mode as figure 3 12 7 3 12 8 3 12 9 3 12 10 3 12 11 3 12 12 Figure 3 12 7 is Level measurement results List ...

Page 75: ...DTVLINK T2 Operation Manual 67 Figure 3 12 7 Figure 3 14 8 is Tilt measurement results List Figure 3 12 8 ...

Page 76: ...DTVLINK T2 Operation Manual 68 Figure 3 12 9 is Scan measurement results List Figure 3 12 9 Figure 3 12 10 is spectrum measurement results List Figure 3 12 10 ...

Page 77: ...DTVLINK T2 Operation Manual 69 Figure 3 12 11 is HUM measurement results List Figure 3 12 11 Figure 3 12 12 is Limit measurement results List Figure 3 12 12 ...

Page 78: ...lect one file by press or and press DELETE to delete this selected file the DELETE FILE dialog will display as figure 3 12 13 Figure 3 12 13 Press YES in figure 3 12 13 to return file list menu with delete select file Press NO in figure 3 12 13 to return file list menu without delete file ...

Page 79: ...icon and then press to enter SETUP menu as Figure 4 1 1 Figure 4 1 1 INFORMATION General information of the DTVLINK T2 includes manufacturer information version and so on GENERAL The setup includes auto shutdown time setting language selection date and time setting files status and option selection Select the DVB C DVB T2 option ...

Page 80: ...Level unit Level Calibrate Limit setup Auto Diagnosis and Voltage temperature measurement CHANNEL PLAN The setup for channel plan includes user plan selection learn and edit user plan LOAD DEFAULT Load the default values of system configuration ...

Page 81: ...INK T2 Operation Manual 73 4 2 INFORMATION This is the information of the instrument Refer to Figure 4 2 1 It includes serial number software version hardware version calibration date and so on Figure 4 2 1 ...

Page 82: ...n automatically for inactive keypad after 3 minutes 5 minutes 10 minutes 30 minutes and ON never shutdown mode as Figure 4 3 1 Figure 4 3 1 4 3 2 Language Selection The language of DTVLINK T2 can switch among English Turkish Spanish and Chinese as figure 4 3 2 After choose instrument will transform menu automatically ...

Page 83: ...ration Manual 75 Figure 4 3 2 Note Contact AD INSTRUMENTS for more languages 4 3 3 Date and Time When there is something wrong in system date or clock user can calibrate new date or time as Figure 4 3 3 Figure 4 3 3 ...

Page 84: ...DTVLINK T2 Operation Manual 76 4 3 4 Files Status This interface shows the number of files have been saved and also show the Memory status as figure 4 3 4 Figure 4 3 4 ...

Page 85: ...n This section is used for user to enable or disable the optional functions by grant authorization as figure 4 3 5 Figure 4 3 5 In figure 4 3 5 press ENTER and input correct code to enter the option interface as figure 4 3 6 4 3 7 Figure 4 3 6 ...

Page 86: ...RUMENTS or our local distributor to buy theoption password Enable Disable In figure 4 3 7 user can press to enable or disable the DVB C option 4 3 5 1 Enable Optional Function Press ENABLE screen will display a dialogue to ask for the corresponding password as figure 4 3 8 ...

Page 87: ...eration Manual 79 Figure 4 3 8 Note Please contact AD INSTRUMENTS or our local distributor to buy the DVB C T2 function code Here user need to input password by character digit and keys as figure 4 3 9 Figure 4 3 9 ...

Page 88: ...orrect password and press ENTER the corresponding optional function will be enabled in figure 4 3 10 Figure 4 3 10 4 3 5 2 Disable Optional Function In figure 4 3 10 press DISABLE to disable the optional function screen will display as figure 4 3 11 ...

Page 89: ...eration Manual 81 Figure 4 3 11 In figure 4 3 11 if press YES the corresponding optional function will be disabled but if press NO the disable command will be canceled and screen will still display as figure 4 3 10 ...

Page 90: ...DTVLINK T2 Operation Manual 82 4 4 Measurement Parameter Setup 4 4 1 Level Unit Figure 4 4 1 4 4 2 Level Calibrate Figure 4 4 2 ...

Page 91: ...an make amendment and compensation of the measure data in all level measurement function press MODIFY to highlight the level offset box and then press or to adjust it and press ENTER to enable the input data 4 4 3 Limit Setup Figure 4 4 4 ...

Page 92: ...t setting have been provided as Figure 4 4 3 Figure 4 4 4 Figure 4 4 5 and Figure 4 4 6 Five Limit items included in page one 1 4 which is used for DVB T singles test The default value of these Limit items are list as Table 4 4 1 The difference between MAX POWER and MIN POWER ...

Page 93: ... 1E 5 VBER 1E 7 Page two 2 4 is used for analog TV test The default value of these Limit items are list as Table 4 4 2 The difference between MAX VIDEO and MIN VIDEO must be larger than six dB Table 4 4 2 Item Limit Minimum Video level 60dBμV Maximum Video level 100dBμV Minimum V A 10dB Maximum V A 20dB Maximum VID 10dB Maximum VID DEV 3dB ...

Page 94: ...e difference between MAX POWER and MIN POWER must be larger than six dB Table 4 4 3 Item Limit Minimum Power level 50dBμV Maximum Power level 90dBμV Minimum MER 32dB Maximum PRE BER 1 0E 7 Maximum POST BER 1 0E 9 Page three 4 4 is used for tilt measurement two limit items list including of MIN TILT and MAX NOISE The default value of these Limit items are list as Table 4 4 4 Table 4 4 4 Item Limit ...

Page 95: ...o choose the LOAD DEFAULT button on the bottom of that page and then press to confirm NOTE If the digital channels have been included in tilt measurement with analogue channels the power of digital channels will be add a fixed offset so that it can be compare with video of analogue channels 4 4 4 Auto Diagnosis You can enable the auto diagnosis function PASS and FAIL refer to 3 3 3 as figure 4 4 7...

Page 96: ...t be set the valid values 4 4 5 Voltage and temperature The button VOL TEMP here is used to enter the measurement interface Figure 4 4 8 4 4 5 1 Battery Voltage As Figure 4 4 8 battery voltage will be displayed on the screen When it is lower than 10 6V this meter will remind that it will shut down automatically soon Figure 4 4 8 ...

Page 97: ...e whether it is AC or DC in the trunk and display the trunk voltage on the screen as Figure 4 4 9 Figure 4 4 9 4 4 5 3 Temperature Inside DTVLINK T2 can monitor inside temperature itself and you can press or to choose the display unit Celsius or Fahrenheit refer to Figure 4 4 10 and Figure 4 4 11 ...

Page 98: ...DTVLINK T2 Operation Manual 90 Figure4 4 10 Figure4 4 11 ...

Page 99: ... Up to five user plans can be built and saved The user plans are labeled as A B C D and E User can choose one as current user plan as Figure 4 5 1 Then the meter will measure according to the selected the user plan Figure 4 5 1 NOTE DTVLINK T2 has five default user plans ...

Page 100: ...dard alphanumeric mode After choose the meter will show the channel number as you desired in any measurement mode Refer to Figure 4 5 2 Figure 4 5 2 4 5 3 Learn User Plan You can build and store up to five user plans in meter Before first measurement you should build the user plan to make the meter be compatible with your cable system ...

Page 101: ...ou can enter into SELECT USER PLAN and then make the LEARN USER PLAN operation Detailed operation refer to 3 2 4 5 4 Edit User Plan The user plan is combined by following Digital numeric channel number Standard alphanumeric channel number Channel type Analogue DIGI Single Freq DUAL Carrier frequency Audio offset Activation status Modulation SR Symbol rate ...

Page 102: ...LAN will show the channels list on the screen as Figure4 5 3 you can only exit this function by press the HOME key press or to highlight one channel and press to edit status as Figure 4 5 4 Figure 4 5 4 NOTE Any edit here will be saved when you exit the screen ...

Page 103: ...wer than 10 6V the instrument will shut down automatically The charge time is about 3 hours NOTE 1 The meter can be only charged by the charger provided together with DTVLINK T2 2 When upgrading the software please keep the power on and don t interrupt the process otherwise it will cause the meter frozen 3 Low temperature may reduce the capability of the battery but the battery will not be damaged...

Page 104: ...ger indicator will light with red 3 When indicator become to green the instrument has been fully charged It is suggested to charge another one hour after indicator change to green This way can extend the battery life Then you can disconnect the charger input plug with power and pull out the charger output plug NOTE The instrument can not be charged in the temperature beyond 10 35 otherwise the bat...

Page 105: ...Pin communication port Refer to figure 6 1 Figure 6 1 1 TXD 2 RXD 3 NC 4 5V 5 GND Management PC software Toolbox is provided as standard You can remotely control the instrument to do the measurement and the measurement data will be displayed as graph on the PC monitor for analysis and printing ...

Page 106: ...ower MER CBER VBER DVB T Signal Parameters Carriers 2K 8K Set by user Guard Interval 1 4 1 8 1 16 1 32 Set by user Code Rate 1 2 2 3 3 4 5 6 7 8 Modulation QPSK 16QAM 64QAM Spectral Inversion Automatic Channel Power Range 30 100dBuV Accuracy 2 0dB MER Range 30dB Accuracy 2 0dB BER CBER VBER ...

Page 107: ...l Parameters Carriers 2K 8K 4K 1K 16K 32K Set by user Guard Interval 1 32 1 16 1 8 1 4 1 128 19 128 19 256 Set by user Code Rate 1 2 3 5 2 3 3 4 4 5 5 6 Modulation QPSK 16QAM 64QAM 256QAM Spectral Inversion Automatic Channel Power Range 30 100dBuV Accuracy 2 0dB MER Range 32dB Accuracy 2 0dB BER CBER LBER ...

Page 108: ...Hz Receive bandwidth 280 KHz Channel Type Analogue TV TV Digital TV 16 32 64 128 256 QAM Analog Level Measurement Range 30dB V to 120dB V Accuracy 1 5dB Resolution 0 1dB Input impedance 75Ω Digital Channel demodulation type standard ITU T J 83 Annex A B C standard support 16 32 64 128 256 QAM SR 1MS S 7MS S ...

Page 109: ... type QAM Average Power Level range 30dB V to 110dB V Accuracy 2 0dB resolution 0 1dB Channel Scan Number of channels 160 channels max Scanning speed 5 channels s Scale 1 2 5 10 dB div Zoom 1X 2X 3X 4X 5X five levels of magnification Frequency spectrum Bandwidth 2 5MHz 6 25MHz 12 5MHz 25MHz 62 5MHz fullband Scale 1 2 5 10 dB div Tilt measurement ...

Page 110: ...uracy 2V Resolution 0 1V Other function Storage 512K byte Communication Port RS 232C Store Temperature 20 50 Dimensions Handset about 218mm 95mm 49mm Weight Handset about 700g Display 320 240 OLED Power supply Battery 12 6V 1 6AH LiIon battery Charger AC 100 V to 240V 50 60Hz Work time 4 5hours full charged battery Charge time 3hours ...

Page 111: ...T2 Operation Manual 103 8 Standard Accessories Standard Accessories Quantit y DTVLINK T2 1 AC DC power adapter charger 1 Data cable Serial to USB 1 Carrying bag 1 F connector 2 Manual and Toolbox software CD 1 ...

Page 112: ...DTVLINK T2 Operation Manual 104 Add Cardeña 9 local 28053 Madrid Spain Tel 34 91 661 30 37 Fax 34 91 661 49 17 Http www adinstruments es E Mail info adinstruments es ...

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