Operation Manual - PDF document

Operation Manual DS2 4 00 Q Q AM Analyzer Ver ： 1 . 0 © Tianjin Deviser Electronics Instrument Co., Ltd. Deviser Part No.: 2 4 00 - DL All rights reserved. Printed in CHINA . Sep. 20 10 . I Warranty The instrument is warranted for 12 months u nder normal operating conditions (except batteries and LCD). Users should read manual carefully before first use and operate correctly according to the manual. Deviser shall have no responsibility for any defect or damage caused by improper use and mainten ance or for any product which has been repaired or altered by any one other not DEVISER or our authorized service center. When the meter need to be repair ed or calibrate d , Please contact Deviser or our local distributor s in your territory . II INDEX 1. General Introduction ................................ ..... 1 1.1 Channel Measurement .............................. 3 1.2 Constell ation Diagram ............................... 3 1.3 BER Statistics ................................ ............ 4 1.4 Tilt/Level List ................................ ............. 4 1.5 C hannel Scanning ................................ ..... 4 1.6 Spectrum Scanning ................................ ... 4 1.7 Hum Measurement ................................ .... 5 1.8 Limit Measurement ................................ .... 5 1.9 Auto Test ................................ ................... 5 1.10 Voltage Measurement ............................. 5 1.11 Multiple User Channel ............................. 6 1.12 File Management ................................ ..... 6 1.13 Intelligent Power Management ................ 6 2. Introduction ................................ ................... 7 2.1 Appearance ................................ ............... 7 2.2 Keypad ................................ ...................... 8 III 2.2.1 Soft keys ................................ ............ 8 2.2.2 Shortcut keys ................................ ..... 8 2.2.3 Character/Digit Input .......................... 8 2.3 Display Description ................................ .... 9 3. Using the Instrument ................................ ... 10 3.1 Function Menu Display ............................ 10 3.2 Learn User Channel Plan ........................ 11 3.3 Level Measurement ................................ . 16 3.3.1 Analogue channel measurement ...... 18 3.3.2 Digital channel measurement ........... 22 3.3.3 Limit Display ................................ ..... 25 3.4 Constellation Diagram ............................. 26 3.5 BER Statistics Measurement ................... 29 3.5.1 Parameter Description ..................... 30 3.5.2 Soft Keys Operations ....................... 31 3.6 Tilt/Level List Measurement ..................... 32 3.6.1 Tilt Mode ................................ .......... 34 3.6.2 Level List Mode ................................ 36 3.7 Channel Scanning ................................ ... 38 IV 3.7.1 Soft Keys Operation ......................... 39 3.8 Spectrum Scanning ................................ . 42 3.8.1 Soft Keys Operation ......................... 43 3.8.2 Paramet er Setting ............................ 43 3.9 HUM Measurement ................................ . 48 3.9.1 Soft Keys Operation ......................... 49 3.10 Limit Measurement ................................ 50 3.10.1 Test Results List ............................. 51 3.10.2 Limit Edit ................................ ........ 52 3.11 Auto Test ................................ ................ 54 3.11.1 Create New Project ........................ 55 3.11.2 Auto Test Storage ........................... 61 3.12 File Management ................................ ... 63 3.12.1 File Directory ................................ .. 63 3.12.2 Save File ................................ ........ 64 3.12.3 Read File ................................ ........ 67 3.12.4 Delete File ................................ ...... 71 4. Setup ................................ ............................ 73 4.1 Brief Introduction ................................ ..... 73 V 4.2 INFORMATION ................................ ....... 75 4.3 GENERAL ................................ ............... 76 4.3.1 Shutdown Time ................................ 76 4.3.2 Language Selection ......................... 76 4.3.3 Date and Time ................................ .. 77 4.3.4 Files Status ................................ ....... 78 4.3.5 System upgrade ............................... 78 4.4 Measurement Parameter Setup .............. 79 4.4.1 Level Unit ................................ ......... 79 4.4.2 Level Calibrate ................................ . 79 4.4.3 Limit Setup ................................ ....... 80 4.4.4 Auto Diagnosis ................................ . 84 4.4.5 Voltage and temperature .................. 85 4.5 Channel Plan ................................ ........... 89 4.5.1 Select User Plan .............................. 89 4.5.2 Channel Number Type ..................... 90 4.5.3 Learn User Plan ............................... 90 4.5.4 Edit User Plan ................................ .. 91 5. Power Supply ................................ ............... 94 VI 5.1 Battery ................................ ..................... 94 6. Port ................................ ............................... 97 7. Specification ................................ ................ 98 8. Standard Accessories ............................... 102 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 1 DS2400Q 1. General Introduction D S2 4 00 Q is new model with color screen and high performance, which is developed for digital cable TV analysis by Deviser . This model can measure and display most index es of D igital TV (Channel P ower , MER , BER, C onstellation Diagram); Analog TV(S ingle - frequency L evel, Carrier Level of Full C hannel s Spectrum , HUM) . Also DS2 4 00 Q can meas ur e Trunk Voltage, B attery V oltage and Frequency S pectrum S canning. DS 2 4 00 Q has RS - 232 port for comm unicat ing with P C and also the PC software – TOOLBOX which can make files management and analysis . DS2400Q QAM Analyzer Operation Manual DEVISER 2 DS2400Q Features: * QAM, QPSK, COFDM Test * Level Test * Channel Scanning * Spectrum * Tilt * HUM * Voltage Measurement * Multiple User Channel Plan Setup * File Management * Int elligen t Power Management * Character /Numeral Input * S hortcut Setup * Multi languages DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 3 DS2400Q 1.1 Channel Measurement DS2 400Q supports accurate signal level test in analogue TV , QAM and single frequency modes. For Analogue channel s , you can get video level, audio level and △ V/A etc. F or Digital channels, DS2 400Q support s modulation modes of QAM, QPSK and COFDM , Here, you can get Chan n el P ower, MER and BER . NOTE: MER, BER test is only in QAM M odulation Mode. (16/32/64/128/256QAM) 1.2 Constellation Diagram F or Digital channels, Constellation diagram function supports modulation mode s of QAM, Here, you can get Channel Power, MER , BER and Constellation diagram . DS2400Q QAM Analyzer Operation Manual DEVISER 4 DS2400Q 1. 3 BER Statistics For Digital channels, you can get MER, BER, ES, SES, COR, UNCOR and etc … 1. 4 Tilt/Le vel List Tilt/Level list test is the effective solution to check the flatness and amplitude, and DS2 400Q support 12 channels tilt max. 1. 5 Channel Scanning DS2 400Q supports video and audio level display of all channels, which could up to 1 6 0 channels most. Also its zoom in/out of 5 levels and marker function make your observation easier. 1. 6 Spectrum Scanning DS2 400Q ha s spectrum function, It provides several spans, and two sample modes (AVG and PEAK ). In order to det ect and know the interference , it has pea k - hold function which shows the difference between peak spectrum and current spectrum by marker and double - ma r ker DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 5 DS2400Q function. 1. 7 Hum Measurement H UM is also named as power supply hum modulation distortion , which come s from the low - frequency interference of power supply . 1. 8 Limit Measurement DS2 400Q can fast check the cable system by the limit test function. Each enabled channel will be tested according to the limits set by user, and after the testing, pass/fail indicator can be viewed. 1.9 Auto Test DS2 400 Q provides a convenient way to automatic test the cable system. You can set up test items including level, spectrum, limit test, HUM , tilt, etc. And the test result will be saved automatically. 1.10 Voltage Measurement DS2 400Q can measure battery voltage , trunk voltage and identify AC or DC automatically of the cable system . DS2400Q QAM Analyzer Operation Manual DEVISER 6 DS2400Q 1. 11 Multiple User Channel DS2 400Q can create five user channel plans max , which contain s digital channels or analog channels or mixed channels . Also they can be switched easily. So it is very suitable for multi - network maintenance. 1. 1 2 File Management DS2 400Q can store the results of channel level test , QAM test , tilt test , channel scanning, spectrum scanning and HUM test for analogue TV channel . User can manage and analyze these file s via meter or PC. 1.1 3 Intelligen t Power Management DS2 400Q with full charged is able to work over 5 hour s . T he power supply monitoring system will monitor the status of power and ensure the instrument in power saving mode. NOTE: Charge the battery before first use . Refer to 5.2 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 7 DS2400Q 2. Introduction 2.1 Appearance Get acquainted with th e appearance before use ： Serial Port RF Interface LCD Keyboard Charge Status POWER Charge Interface DS2400Q QAM Analyzer Operation Manual DEVISER 8 DS2400Q 2. 2 Keypad 2. 2 .1 Soft keys There are three soft key s ( , and ) located under the screen . They are used to access the functions represented by the icons displayed on the bottom of screen. 2. 2 . 2 Shortcut keys There are three keys bello w the three soft keys including , , . Press key can d irectly back to menu screen. and key is used as differen t functions in different screen . 2. 2 . 3 Character/Digit Input Press any character /digit key circularly to input . DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 9 DS2400Q 2. 3 Display Description DS2400Q QAM Analyzer Operation Manual DEVISER 10 DS2400Q 3. Using the Instrument 3.1 Function Menu Display Figure3 - 1 - 1 The Figure3 - 1 - 1 Display the Main Menu which include all of the function icons, S oft Keys: : Enter the selected shortcut interface . : Switch the selected shortcut on the left directio n circularly . : Switch the selected shortcut on the right direction circularly . DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 11 DS2400Q Function keys : : Switch the selected shortcut on the up direction circularly . : Switch the selected shortcut on the up direction circularly . T he selected shortcut will displ ays in highlight. 3. 2 Learn User Channel Plan In order to enhance your work efficiency, please crea te user channel plan before measurement . DS2 400Q will choose all effe ctive channels in the cable system automatically and save in this channel plan . The User Channel Plan includes three elements as follow s : * Channel number * Channel format (TV, DIGI) * Carriers frequency (video and audio) DS2400Q QAM Analyzer Operation Manual DEVISER 12 DS2400Q The following is the step of setup user channel plan . 1 ． Connect the instrument with the cable system. 2 ． Press return to mai n menu, and select the Setup shortcut like Figure3 - 2 - 1, then press into Setup Menu. Figure 3 - 2 - 1 T hen press the or select the CHANNEL PLAN item, as Figure3 - 2 - 2. DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 13 DS2400Q Figure 3 - 2 - 2 Now press into Figure 3 - 2 - 3 CHANNEL PLAN , then press select the user c hannel plan . Figure 3 - 2 - 3 DS2400Q QAM Analyzer Operation Manual DEVISER 14 DS2400Q 3. Press or to select the LEARN CHANNEL PLAN item , and press , the LEARN CHANNEL PLAN function displays as Figure 3 - 2 - 4 . Figure 3 - 2 - 4 P ress to select one channel type . 4. Press or into Parameter setting, y ou can define the channel plan as Analogue channel plan, digital channel plan or analog/digital mixed channel plan . Also you can edit “Bandwidth, Modulation type, Sybol Rate” in digital channel plan. When DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 15 DS2400Q your setup is completed , please press or to START , then pres s to creat your user channel pla n . 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 chann e ls will be display ed in eac h measurement interface. After setup your user channel plan, you can also enable or disable channels. W hen the learning the channel plan , please keep the power on and don ’ t interrupt the process, otherwise it wil l creat e a wrong channel plan. DS2400Q QAM Analyzer Operation Manual DEVISER 16 DS2400Q 3. 3 Level Measurement Press return to main menu, press the or to select the Level shortcut as Figure 3 - 3 - 1 . T hen press . Figure 3 - 3 - 1 If there is no valid channel to test, the screen will display as figure 3 - 3 - 2. Now , if you want to do any test in this function, you have to creat e a valid channel with press . DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 17 DS2400Q Figure 3 - 3 - 2 T he channel list will display as figure 3 - 3 - 3. P ress or to select the channel, and here, Press or will page up or page down the channel l ist. T hen press into channel information as figure 3 - 3 - 4. Figure 3 - 3 - 3 DS2400Q QAM Analyzer Operation Manual DEVISER 18 DS2400Q Figure 3 - 3 - 4 Press or to select the channel parameters, if the selected parameter could be changed, press to change . A s the figure 3 - 3 - 4, ensur ing the STATUS is enable , the channel will be enabled. 3. 3 .1 Analogue channel measurement If the current channel is a valid analogue channel, The Level function will display as Figure 3 - 3 - 5 , three test results are displayed in the screen, include Video, audio and V/A. DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 19 DS2400Q : Video Level : Audio Level Figure3 - 3 - 5 CH INFO ( ) : P ress this button will display the channel information of this analogue channel as figure 3 - 3 - 6. T he channel parameters also can be modified in this screen. DS2400Q QAM Analyzer Operation Manual DEVISER 20 DS2400Q Figure 3 - 3 - 6 ONE CHN/ADJ CHN ( ) : T he user can switch from both of two display mode ( One channel and t hree channels ) : One channel mode: T he histogram show the video and audio of current channel only. Three channels mode: T he histogram show s the video and audio of current channel, and also show the level of two ad jacent channels with gray color , if the adjacent channels are valid. Refer to figure 3 - 3 - 7. DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 21 DS2400Q Figure 3 - 3 - 7 FREQ ( ) : P ress this button to show single frequency measurement interface as figure 3 - 3 - 8, the user can modify the frequency, press this butto n again to return . Figure 3 - 3 - 8 DS2400Q QAM Analyzer Operation Manual DEVISER 22 DS2400Q and is used for switch channels circularly. I f the next channel is digital channel, the screen will be changed. (Refer to next section. ) 3. 3 .2 Digital channel measurement In this function DS2 400Q is able to measure POWER, MER and BER . A s figure 3 - 3 - 9 . Figure 3 - 3 - 9 CH INFO ( ) : P ress this button will display the channel information of this digital channel, as figure 3 - 3 - 10. T he channel parameters also can be modified in this screen. DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 23 DS2400Q Figure 3 - 3 - 10 ONE CHN/ADJ CHN ( ) : T he user can switch from both of two display mode (One channel and Three channels): One channel mode: T he histogram show s the video and audio of current channel only. Three channels mode: T he histogram show s the video and audio of current channel, a nd also show the level of two adjacent channels with gray color ,if the adjacent channels are valid. Refer to figure 3 - 3 - 11. DS2400Q QAM Analyzer Operation Manual DEVISER 24 DS2400Q Figure 3 - 3 - 11 FREQ ( ) : P ress this button into frequency measurement interface as figure 3 - 3 - 12, In this mode, the user can easil y modify the centr al frequency, but the other parameters of digital channel will be the same as channel mode, press this button again to return . DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 25 DS2400Q Figure 3 - 3 - 12 and are used for switch ing channels circularly. I f the next channel is analogue channel, the screen will be displayed as figure 3 - 3 - 5. 3. 3 . 3 Limit Display A PASS or FAIL in big font is displayed in the screen to indicate the quality of current channe l as the figure 3 - 3 - 5 and f igure 3 - 3 - 9, the limit value to judge the quality of channel can b e showed in the measurement setup menu, and also can be modified. And also it can disable the judge of channe l quality of in the measurement setup menu. DS2400Q QAM Analyzer Operation Manual DEVISER 26 DS2400Q 3. 4 Constellation Diagram Press to return to main menu interface , and press or choose constell ation icon , and then press to enter constellation measurement . DS2 4 00 Q ’ s constellation diagram function supports modes of QAM . Here, you can get channel POWER , MER , BER (pre - BER and post - BER ) and constellation diagram , all of the channel parameters can be modified by press . Co nstellation diagram show s as figure 3 - 4 - 1. Figure 3 - 4 - 1 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 27 DS2400Q Soft Keys Operation : CH I NFO ( ): Press this button to display the current channel information, and user can modify all of the parameters in this menu . QUADRANT ( ): Press thi s button, switch the select 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 zoo m in flag will be displayed on the top of the screen as figure 3 - 4 - 2. Figure3 - 4 - 2 DS2400Q QAM Analyzer Operation Manual DEVISER 28 DS2400Q and are used for switch ing digital channels circularly. Note: T his function only supports digital channels, if the current user plan doesn ’ t have any digital channels , the screen will show as figure 3 - 4 - 3. Figure 3 - 4 - 3 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 29 DS2400Q 3. 5 BER Statistics Measurement Press to return to main menu interface, and press or choose statistics icon, and then press to enter statistics measurement. DS2 4 0 0Q is able to make BER stati stics 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 DS2400Q QAM Analyzer Operation Manual DEVISER 30 DS2400Q 3. 5 . 1 Parameter Descrip tion abbreviations meaning ES Error seconds During 1s, there are one or more mistakes which can be correc ted or not be corrected, and then ES plus1 SES 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 bit s UNCOR Uncorrected error bit s SUM Total bits TOTAL PRE - BER ( COR+ UNCOR)/SUM TOTAL POST - BER UNCOR/SUM DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 31 DS2400Q 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 menu . TIME ( ): P ress this button to set t he statistics time, DS2400Q sup p orts several fixed time(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 a n d the screen will show as figure 3 - 5 - 2. N ow any key pressed can not be respond except HOME , F3 and POWER , until the end of the statistics time. Figure 3 - 5 - 2 DS2400Q QAM Analyzer Operation Manual DEVISER 32 DS2400Q 3. 6 Tilt/Level List M easurement Tilt/Level list test is the effective solution to check the flatness and splitter ’ s gain of cable system, DS2 400Q can get levels of 1 2 channels and observe the measurement result and graph easily. Press to return to main menu interface, and press or and choose Tilt icon, then press to enter Tilt/Level List measurement. Please select a t least four channels to do tilt test, otherwise it will pop - up one dialog box as Figure 3 - 6 - 1. Figure 3 - 6 - 1 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 33 DS2400Q In Figure 3 - 6 - 1, press to enter the tilt channels setup menu, select the channels that you want to do tilt test as Figure 3 - 6 - 3 ; press or t o change the highlight line, and then press the to select or unselect the channel, H ere, the and button have been defined to page up and page down. T he "√" means this channel is selected. If you want to cancel this selection, please press again and "√" will disappear ed . The channel No. of all channels selected will be saved and displayed at the left blocks DS2400Q QAM Analyzer Operation Manual DEVISER 34 DS2400Q Figure3 - 6 - 2 After select ed ， Press to return t o main menu interface, and press the again to enter the Tilt/Level List measurement. Now the Tilt measurement can be continue d . 3. 6 .1 Tilt Mode In tilt test interface, the channels will be display ed as histogram, and test result will be displayed at the bottom of screen as Figure 3 - 6 - 3 . DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 35 DS2400Q Figure 3 - 6 - 3 3. 6 .1 .1 Soft Keys Operation LIST ( ): Press LIST soft key to enter level list mode, as Figure 3 - 6 - 4 . Figure 3 - 6 - 4 DS2400Q QAM Analyzer Operation Manual DEVISER 36 DS2400Q SETUP ( ): When test ing , press SETUP soft key and enter into Figure 3 - 6 - 2 to re - select test ed channels . 3. 6 .2 Level List Mode Press to switch the modes between Tilt and level list. In level list mode, you can easily get level value of the channels tested, as Figure 3 - 6 - 4 . 3. 6 . 2.1 Soft Keys Operation LIST ( ): Press GRAPH soft key to enter Tilt mode, as Figure 3 - 6 - 3 . SETUP ( ): When test ing , press SETUP soft key and enter into Figure 3 - 6 - 2 to re - select tested channels . H ere, the and button is defined to switch the tilt channel which ’ s test result will be displayed at the bottom of screen . DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 37 DS2400Q A FAIL or PASS will be displayed at the bottom of the screen, the Limit value can be modified in M easurement S etup （ Refer to 4.4.3 ） . And also we can disable the judge of quality of channel in the M easurement S etup. DS2400Q QAM Analyzer Operation Manual DEVISER 38 DS2400Q 3. 7 Channel Scanning DS2 4 00 Q support chann el scanning function in order to test the flatness and amplitude of cable TV system quickly . Press to return to main me n u interface and press or to select the SCAN icon, and then press to enter Channel Scanning function as Figure 3 - 7 - 1 ， The scannin g graph of current user plan is displayed on the screen, a slider in red color shows the current scanning channel. Figure 3 - 7 - 1 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 39 DS2400Q G reen color represent s video level of analogue channels. Y ellow color represent s audio level of analogue channels. B lue color represent s power of digital channels. T he scan function also display the channel num ber of scanning start channel and end channel. 3. 7 .1 Soft Keys Operation TAB ( ): P ress this button can modify the cursor location. Then t he parameter which highlighted on the yellow color background can be modified by or . MARK: I n figure 3 - 7 - 1, press the or and the mark er with red color will move left or right. A nd the test result of channel at the position of mark er will be displayed on the bottom of the screen. DS2400Q QAM Analyzer Operation Manual DEVISER 40 DS2400Q R EFERENCE LEVEL : P ress TAB to select the REF , and then it can be modified by press or , the range of reference level: 0 - 120 d B uV . VIEW: P ress TAB to select the VIEW and switch between × 1, × 2, × 3, × 4 and × 5 by press ing or . × 1: Max display 30 channe ls in the screen. × 2: Max display 50 channels in the screen. × 3: Max display 75 channels in the screen. × 4: Max display 150 channels in the screen. × 5: Max display 255 channels in the screen. SCALE: P ress TAB to select the SCALE , and switch between 1 dB, 2 dB, 5dB and 10dB by press ing or . AUTO ( ) : Press AUTO soft key to adjust reference level and scale quickly . T he meter will DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 41 DS2400Q automatically adjust them to most optimal state. STOP ( ): Press STOP soft key , the scanning will stop, and you can continue the scanning by press ing it again. DS2400Q QAM Analyzer Operation Manual DEVISER 42 DS2400Q 3. 8 Spectrum Scanning Press to return to main menu interface and press or to select the spectrum icon, and then press to enter spectrum function . DS2 4 00 Q ’ s spectrum function supports double - ma r k er display and peak - ho ld function as Figure 3 - 8 - 1. Here, you can set up span , frequency, sampl ing mode and etc … . P ress can modify the cursor location. Figure3 - 8 - 1 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 43 DS2400Q 3. 8 .1 Soft Keys Operation TAB (F1): P ress to modify the cursor location, and the select ed parameter can be m odified by press or , or by figure Input directly . AUTO ( ): Press AUTO soft key to adjust reference level and scale quickly . T he meter will automatically adjust them to most optimal state. STOP ( ): Pressing STOP soft key , the scanning will be stop ped , and you can continue the scanning by press it again. 3. 8 .2 Parameter Setting You can modify or adjust measurement parameter. P ress can highlight the selected parameter and then press or , or press the character/digit key s directly . DS2400Q QAM Analyzer Operation Manual DEVISER 44 DS2400Q Figure3 - 8 - 2 R EFERENCE LEVEL: After selecting the REF parameter , show as figure 3 - 8 - 2, press or to adjust the reference level. Note: The character/digit key s input is not support. TRC : After selecting the TRC parameter , press or to select the sampling mode ( AVG or PEAK ) , AVG: sample average mode, the display result of each point will be a n average of several sample value. I t will be fast er than the PEAK mode, and DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 45 DS2400Q also if you want to measure the noise of the system, you need to select this mode. PEAK: positive - pea k mode, the display result of each point will be peak value of several sample value. I t will be necessary to select this mode to measure the video or audio level of analogue channels. S how as figure 3 - 8 - 3. Figure 3 - 8 - 3 SCALE: After selecting the SCALE pa rameter , press or to choose one scale from 1dB/, 2dB/, 5dB/ and 10dB/ . DS2400Q QAM Analyzer Operation Manual DEVISER 46 DS2400Q CENTER FREQUENCY: After selecting the CENT parameter , you can input the center frequency by the character/digit key s . Note: A ny frequency from 5 to 10 0 0MHz can be input. SPAN: Afte r selecting the SPAN parameter , press or to adjust the span among 2.5MHz, 6.25MHz, 12.5MHz, 25MHz, 62.5MHz and 1047MHz . MAX : After selecting the MAX - HOLD parameter , if you select the MAX - HOLD by press ing or , the screen will display both the max va lue and the real - time value of each point. MARKA: After selecting the MARKA parameter , the red marker A becomes active marker, pressing or can move the red marker to the wanted view point. DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 47 DS2400Q MARKB: After selecting the MARKB parameter , the purple marker B becomes active marker, pressing or can move the purple marker to the wanted view point. DS2400Q QAM Analyzer Operation Manual DEVISER 48 DS2400Q 3. 9 HUM Measurement DS2 4 00 Q support HUM measurement to an a log ue channel . Press to return to main menu interface and press or to select the HUM icon, and th en press to enter HUM function. S how as Figure 3 - 9 - 1 . H UM modulation is also named power hum modulation distortion , which caused by low - freq uency interference of the power . ( It is 50Hz in China ) Figure 3 - 9 - 1 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 49 DS2400Q 3. 9 .1 Soft Keys Operation 50 Hz /60Hz ( ): Aft er pressing 50 Hz or 60Hz soft key, the DS2400Q will select the frequency of system power as figure 3 - 9 - 2. Figure 3 - 9 - 2 or are used to switch analogue channels circularly. A lso you can input the channel number using the character/digit key s . DS2400Q QAM Analyzer Operation Manual DEVISER 50 DS2400Q 3.10 Lim it M easurement Press to return to main menu interface and press or to select the LIMIT icon, and then press to enter LIMIT function . As shown in figure 3 - 10 - 1 , DS 2400Q is able to detect cable TV system rapidly, and check out the number of unqualif ied 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. Figure 3 - 10 - 1 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 51 DS2400Q NOTE: DS 2400Q checks th e analog channel only in Limit Test mode . 3. 10 .1 T est Results List After 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 △ A DJ channels. Refer to figure 3 - 10 - 2. Figure 3 - 10 - 2 DS2400Q QAM Analyzer Operation Manual DEVISER 52 DS2400Q P ress t o retest . P ress to list as figure 3 - 10 - 3. Figure 3 - 10 - 3 3. 10 .2 L imit Edit You can edit the limit setup in SETUP . First enter into SETUP menu, press into MEASURE MENT Setting , highlight LIMIT SETUP by or , t he screen displays as figure 3 - 10 - 4 . DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 53 DS2400Q Figure 3 - 10 - 4 If you want to change a parameter ,press to select the parameter , p ress or to change. Press to LOAD DEFAULT ,and then press you can select the default. DS2400Q QAM Analyzer Operation Manual DEVISER 54 DS2400Q 3.1 1 Auto Test Press key to the main menu, press or to select the AUTO icon and then press to enter . The screen displays as Figure 3 - 1 1 - 1. User can store all test items in one testing project and when you start this project , the appointed items will be test in sequence and store in one file. Figure 3 - 1 1 - 1 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 55 DS2400Q 3.1 1 .1 Create New Project H ighlight blank space by or , and then p ress button, DS 2400Q will guide you to build a new project step by step. Step 1 ： Create Project Name Press to create a new project as Figure 3 - 1 1 - 2. You can name the new project. Figure 3 - 1 1 - 2 Step 2 ： Select test items The auto test includes f ive items ( L evel test, S pectrum, L imit test , T ilt and HUM ). Select the test item s by or keys, and disable or DS2400Q QAM Analyzer Operation Manual DEVISER 56 DS2400Q enable it by pressing . The green indicates the item has been enabled a fter set , press DOWN to next step or UP to return without save. The screen displays as figure 3 - 11 - 3 . Figure 3 - 1 1 - 3 Step 3 ： Edit test items Accordin g to different test items, it will appear corresponsive parame ter setting, as figure 3 - 11 - 4 . DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 57 DS2400Q Figure 3 - 1 1 - 4 1. When edit LEVEL test parameter, move the cursor by or and disable or enable the measured channels by pressing . The channel marked by " √ " will be tested in LEVEL item of auto test procedure. Be sure to confirm the entry by pressing button and return to pr evious menu, as figure 3 - 11 - 5 . DS2400Q QAM Analyzer Operation Manual DEVISER 58 DS2400Q Figure 3 - 11 - 5 2. When edit tilt test parameter, move the cursor by or and disable or enable the measured cha nnels by pressing . The channel marked by " √ " will be tested in TILT item of auto test procedure. Be sure to confirm the entry by pressing button and return to pre vious menu, as figure 3 - 11 - 6 . DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 59 DS2400Q Figure 3 - 11 - 6 3. When you edit SPECT parameter, you are able to edit center frequency/span as figure 3 - 11 - 7 . Figure 3 - 11 - 7 DS2400Q QAM Analyzer Operation Manual DEVISER 60 DS2400Q 4. When edit HUM test parameter, move the cursor by or and disable or enable the measured channels by pressing . The analog channel marked by " √ " will be tested in HUM item of auto test procedure. Be sure to confirm the entry by pres sing button and return to pr evious menu, as figure 3 - 11 - 8 . Figure 3 - 11 - 8 5. When edit LIMIT test parameter, you can check and modify current limit parameter, and then save a nd exit. Refer to figure 3 - 11 - 9 . DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 61 DS2400Q Figure 3 - 11 - 9 Step 4 ： Auto Start After editing l imit test parameter, press button and return to pr evious menu, Press to start the auto test. 3.1 1 . 2 Auto Test S torage After the auto test ,the file will be auto saved in the file menu and mark with a “ * ” as in figure 3 - 11 - 10 . DS2400Q QAM Analyzer Operation Manual DEVISER 62 DS2400Q Figure 3 - 11 - 10 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 63 DS2400Q 3.1 2 F ile Management Press to return to main menu interface and press or to select the FILE icon, and then press to enter FILE management function as Figure 3 - 1 2 - 1. DS2 4 00 Q has independent memory space to store the measurement data. The measurement data of level test ( analogue channels ) , QAM test ( digital channels ) , channel scan, tilt, frequency spectrum measurement and HUM can be s tore d in to files . 3.1 2 .1 File Directory In file list menu, All saved files was list with file names, date and time . DS2400Q QAM Analyzer Operation Manual DEVISER 64 DS2400Q Fig ure 3 - 1 2 - 1 3.1 2 . 2 Save File I f you are making measurements in LEVEL, TILT, SCAN, SPECT , LIMIT and HUM ( at least one of them ) , Press and select the FILE icon and then press , the file list menu will display as figure3 - 1 2 - 2. will be enabled as “ NEW ” , press this button, a “ SAVE THE FILE ” dialog show as figure 3 - 1 2 - 3, DS2400Q will give a default name for new file, also you can rename it using the character/digit key s. DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 65 DS2400Q A fter rename the new file, press or to DATA LIST , all the parameter s could be save d have been listed, and the default status is that all parameters have been selected as figure 3 - 1 2 - 4 . Figure 3 - 1 2 - 2 Figure 3 - 1 2 - 3 DS2400Q QAM Analyzer Operation Manual DEVISER 66 DS2400Q Figure 3 - 1 2 - 4 P ress or to modify the cursor location, and then press to select or unselect the data item as figur e 3 - 1 2 - 5, press to save the file. When the new file was saved, the file list menu display as figure 3 - 1 2 - 6. Figure 3 - 1 2 - 5 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 67 DS2400Q Figure 3 - 1 2 - 6 3.1 2 . 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 - 1 2 - 7. Figure 3 - 1 2 - 7 DS2400Q QAM Analyzer Operation Manual DEVISER 68 DS2400Q 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 - 1 2 - 8, 3 - 1 2 - 9, 3 - 1 2 - 10, 3 - 1 2 - 11, 3 - 1 2 - 12, 3 - 1 2 - 13 , 3 - 12 - 14 . Figure 3 - 1 2 - 8 Figure 3 - 1 2 - 9 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 69 DS2400Q Figure 3 - 1 2 - 10 Figure 3 - 1 2 - 11 DS2400Q QAM Analyzer Operation Manual DEVISER 70 DS2400Q Figure 3 - 1 2 - 12 Figure 3 - 1 2 - 13 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 71 DS2400Q Figure 3 - 1 2 - 14 3.1 2 . 4 Delete File Select one file by press or and press DELETE( ) to delete this selected file, the “ DELETE FILE ” dialog will display as figure 3 - 1 2 - 15 . Figure 3 - 1 2 - 15 DS2400Q QAM Analyzer Operation Manual DEVISER 72 DS2400Q Press ( ENTER ) in f igure 3 - 1 2 - 15 , the file will be deleted as figure 3 - 1 2 - 16 . Figure 3 - 1 2 - 16 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 73 DS2400Q 4. Setup 4.1 Brief Introduction Press to return to main interface and press or to select the SETUP icon, and then press to enter SETUP menu as Figure 4 - 1 - 1. Figure 4 - 1 - 1 * INFORMATION : General information of the DS2 4 00 Q , includes manufacturer information, version and so on. * G E NERAL : The setup includes auto shutdown time setting , language selection , date and time DS2400Q QAM Analyzer Operation Manual DEVISER 74 DS2400Q setting , files status and system upgrade(NOT INSTALL) . * M EASUREMENT : L evel unit, Level Calibrate, L imit setup and Voltage & temperature measurement . * C HANNEL PLAN : The setup for channel plan includes user pl an selection, learn and edit user plan . * LOAD DEFAULT : Load the default values of system configuration. DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 75 DS2400Q 4.2 INFORMATION This is the information of the instrument, Refer to Figure 4 - 2 - 1. It includes serial number, software version , ha r dware version and so on. Figure 4 - 2 - 1 DS2400Q QAM Analyzer Operation Manual DEVISER 76 DS2400Q 4.3 G ENERAL 4.3.1 Shutdown Time To save the power, the instrument can be set to shu tdown automatically for inactive keypad after 3 minutes, 5 minutes, 10 minutes , 30 minutes and O N (never shutdown mode ) , as Figure 4 - 3 - 1. Figure 4 - 3 - 1 4.3.2 Language Selection The language of DS2 4 00 Q can switch among English , and Chinese as figure 4 - 3 - 2 . After choose, instrument will transform menu automatically. DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 77 DS2400Q Figure 4 - 3 - 2 Note ： Contact Deviser 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 DS2400Q QAM Analyzer Operation Manual DEVISER 78 DS2400Q 4.3.4 Files Status T his interface show s the number of files have been saved, and also show the Memory status as figure 4 - 3 - 4 . Figure 4 - 3 - 4 4.3. 5 System upgrade T his function is not installed. DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 79 DS2400Q 4.4 Measurement Parameter Setup 4.4.1 Level Unit Figure 4 - 4 - 1 4.4.2 Level Calibrate Figure 4 - 4 - 2 DS2400Q QAM Analyzer Operation Manual DEVISER 80 DS2400Q User can make amendment and compensation of the measure data in all level measurement function , pres s 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 - 3 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 81 DS2400Q Figure 4 - 4 - 4 Figure 4 - 4 - 5 Three pages of Limit setting have been provided as Figure 4 - 4 - 3, Figure 4 - 4 - 4, Figure 4 - 4 - 5, F our Limit items included in page one (1/3) , which is used for single analogue channel test, T he default value of these Limit items are list as Table 4 - 4 - 1. DS2400Q QAM Analyzer Operation Manual DEVISER 82 DS2400Q Table 4 - 4 - 1 Item Limit Minimum Video level 60dBμV Maximum Video level 90 dBμV Minimum △ V/A 10dB Maximum △ V/A 17dB P age two (2/3) is used for digital channels test, five limit items list include of MIN POWER, MAX POWER, MIN MER, MAX PRE - BER and MAX POST - BER. T he default value of these Limit it ems are list as Table 4 - 4 - 2. Table 4 - 4 - 2 Item Limit Minimum Power level 55 dBμV Max i mum Power level 85 dBμV Minimum MER 10dB Maximum PRE - BER 1.0E - 9 Maximum P OST - BER 1.0E - 9 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 83 DS2400Q P age three (3/3) is used for tilt measurement, two limit items list includ ing o f MIN TILT and MAX TILT. T he default value of these Limit items are list as Table 4 - 4 - 3. Table 4 - 4 - 3 Item Limit Minimum Tilt Delta - 10 dBμV Max i mum Tilt Delta 10 dBμV To set the test limit, you can choose limit item by press TAB ( ) , and then press or to adjust it . I f you want to load default values of all limit items on each page, please press the TAB( ) to choose the LOAD DEFAULT button on the bottom of that page, and then press to confirm . DS2400Q QAM Analyzer Operation Manual DEVISER 84 DS2400Q NOTE: I f the digital channels have been include d in til t 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 FAILURE) as figure 4 - 4 - 6 . Figure 4 - 4 - 6 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 85 DS2400Q NOTE: Before the auto diagnosis function can be work correctly, the Limit items in section 4 - 4 - 3 must 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 - 7. 4.4.5.1 Battery Voltage As Figure 4 - 4 - 7 , battery voltage will be displayed on the screen. When it is lower than 10.6 V, this meter will remind that it will shut down automatically soon. DS2400Q QAM Analyzer Operation Manual DEVISER 86 DS2400Q Figure 4 - 4 - 7 4.4.5.2 Trunk Voltage(AC LINE) This meter will automatically judge whether it is AC or DC in the trunk, and display the trunk voltage on the screen as Figure 4 - 4 - 8 . Figure 4 - 4 - 8 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 87 DS2400Q 4.4.5.3 Temperature Inside DS2 4 00 Q can monitor inside temperature itself, and you can press or to choose the display u nit: Celsius or Fahrenheit , refer to Figure 4 - 4 - 9 and Figure 4 - 4 - 10 . Figure 4 - 4 - 9 DS2400Q QAM Analyzer Operation Manual DEVISER 88 DS2400Q Figure 4 - 4 - 10 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 89 DS2400Q 4.5 Channel Plan 4.5.1 Select User Plan Up to five user plans can be built and saved. The user plans are labeled as A, B, C, D, and E. User can choos e one as current user plan as Figure 4 - 5 - 1. Then, t he meter will measure according to the selected the user plan. Figure 4 - 5 - 1 NOTE: DS2 4 00 Q has five default user plans. DS2400Q QAM Analyzer Operation Manual DEVISER 90 DS2400Q 4.5.2 Channel Number Type You can set the channel number to be displayed in digi ta l (numeric) mode or standard (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. DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 9 1 DS2400Q NOTE: The LEARN USER PLAN option will build the new user plan and replace the current selected user plan. If b uild other user plans, you 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 (alp h anume ric) channel number * Channel type (Analogue, DIGI, Single Freq, DUAL ） * Carrier frequency * Audio offset * Activation status * Modulation * SR (Symbol rate) DS2400Q QAM Analyzer Operation Manual DEVISER 92 DS2400Q Figure 4 - 5 - 3 EDIT CHANNEL PLAN 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. DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 93 DS2400Q Figure 4 - 5 - 4 NOTE ： A ny edit here will be saved when you exit the screen . DS2400Q QAM Analyzer Operation Manual DEVISER 94 DS2400Q 5. Power Supply 5.1 Battery DS2 4 00 Q use s built - in 1 2 . 6 V 1.5 AH Li - Polymer battery and work s over 5 when fully charged. When the voltage of the battery drops below 1 1 V, the battery icon flashes in screen . Once the voltage of the battery is lower than 10. 6 V , 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 DS2 4 00 Q . 2. It is suggested to close the instrument when charging. 3. Low temperature may reduce the capability of the battery, but the battery will not be damaged. DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 95 DS2400Q 4. Please repl ace the battery when its working hours shorten distinctly. 5.2 Charg ing Please charge the instrument as following charg ing process: 1. Insert the charger output plug to DS2 4 00 Q ’ DC charge socket. 2. Connect the charger to AC 100V - 240V Power and the charg er 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 i nput plug with power and pull out the charger output plug. DS2400Q QAM Analyzer Operation Manual DEVISER 96 DS2400Q NOTE: The instrument can not be charged in the temperature beyond 10 ℃ ~35 ℃ , otherwise the battery life will be shorten. DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 97 DS2400Q 6. Port The instrument can communicate with a PC through the 5 Pin communic ation 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 measureme nt and the measurement data will be displayed as graph on the PC monitor for analysis and printing . DS2400Q QAM Analyzer Operation Manual DEVISER 98 DS2400Q 7. Specification Frequency ： Range: 5MHz to 870MHz Accuracy: ±50×10 - 6 (20 ℃ ±5 ℃ ) Resolution: 10 KHz Receive bandwidth: 280 KHz Channel Type: Analogue TV: TV Digital TV: QPSK , COFDM , 16/32/ 64/ 128 / 256 Q AM 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. DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 99 DS2400Q support ： QPSK , COFDM , 16/32/ 64/ 128 / 256 Q AM SR: 1MS/S - 7MS/S bandwidth ： Enactment MER: ～ 39dB （ representative ） Accuracy ： ± 2dB BER: 1E - 3 to 1E - 9 Before and After R - S Decoding Power measure type: QAM QPSK COFDM Average Power Level range : 30dB  V to 110dB  V Accuracy ： ± 2.0dB resolution ： 0.1dB Channel Scan ： Number of channels: 1 6 0 channels max. Scanning speed: 5 channel s/ s Scale: 1, 2, 5, 10 dB/div DS2400Q QAM Analyzer Operation Manual DEVISER 100 DS2400Q Zoom: 1X, 2X, 3X, 4X, 5X five levels of magnification Frequency spectrum ： Bandwidth: 2.5MHz, 6.25MHz, 12.5MHz, 25MHz, 62.5MHz , 1047MHz Scale: 1, 2, 5, 10 dB/ div Tilt measurement: Number of channels: 4 to 12 Resolution: 0.1dB Trunk Voltage measurement: Input range: 0V to 100V (AC/DC) Accuracy: ±2V Resolution: 0.1V Other function: Storage: 512 K byte Communication Port: RS 232C DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 101 DS2400Q Store Temperature: - 20 ℃ ～ 50 ℃ Dimensions: Handset about 218mm×95mm×49 mm Weight: Handset about 7 00g Display: 320 × 240 OLED Power supply Battery: 1 2 . 6 V 1.6AH Li I on battery Charger: AC 10 0 V to 240V 50 - 60Hz Work time: 5 hours (full charged battery) Charge time: ~ 3hours DS2400Q QAM Analyzer Operation Manual DEVISER 102 DS2400Q 8. Standard Accessories Standard Access ories Quantit y DS2400Q 1 AC - DC power adapter/charger 1 Data cable(Serial to USB) 1 Carrying bag 1 F and BNC connect 1 Manual and Toolbox software CD 1 DS2 4 00 Q QAM Analyzer Operation Manual DEVISER 103 DS2400Q Add: NO.40 YiBin Road, Nankai District, Tianjin 300113, China Tel: +86 - 22 - 276 450 03 - 803 Fax: +86 - 22 - 27645002 Http:// www.devisertek.com E - Mail: overseasbiz@deviser.com.cn