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JDS Uniphase DSAM-3500 Скачать руководство пользователя страница 217

Chapter 8

Measure Mode – Basic Tab

Constellation

DSAM Help User Guide

Rev. 001

177

Phase Noise

Phase noise impairments cause the dots on the graph to form a
circular pattern possibly caused by faulty modulators. Phase noise is
best seen on the grid without the use of the zoom feature.

Coherent Interference

Coherent interference impairments – such as CTB, CSO, and spurs –
cause the dots on the graph to cluster with an empty space in the
middle.

Figure 159

Constellation – Thermal (system) Noise

Figure 160

Constellation – Phase Noise

Figure 161

Constellation – Coherent Interface

21128026 R001 DSAM Help User Guide.book Page 177 Thursday, February 5, 2009 2:02 PM

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Содержание DSAM-3500

Страница 1: ...DSAM Product Family Series Complete DSAM Meter Functionality User Guide 21128026 R001 DSAM Help User Guide book Page i Thursday February 5 2009 2 02 PM...

Страница 2: ...21128026 R001 DSAM Help User Guide book Page ii Thursday February 5 2009 2 02 PM...

Страница 3: ...DSAM Product Family Series Complete DSAM Meter Functionality User Guide 21128026 R001 DSAM Help User Guide book Page iii Thursday February 5 2009 2 02 PM...

Страница 4: ...21128026 R001 DSAM Help User Guide book Page iv Thursday February 5 2009 2 02 PM...

Страница 5: ...trademarks of JDS Uniphase Corporation in the United States and or other countries Microsoft Windows Windows CE Windows NT and Microsoft Internet Explorer are either trademarks or registered trademark...

Страница 6: ...tional and international waste legislation It is the responsibility of the equipment owner to return the equipment to JDS Uniphase Corporation for appropriate disposal If the equip ment was imported b...

Страница 7: ...xxxiv Chapter 1 DSAM Product Family Series Overview 1 About DSAM Product Family Series 2 Meter Information 3 Mode Keys 4 Shift Keys 4 Softkey Shortcuts with Function Keys 5 Additional Functions 6 Cha...

Страница 8: ...acity Battery to External Power Connection 15 Connecting the RF Cable 17 Installing and Maintaining the Standard Capacity Battery 17 Installing the Battery 17 Removing the Battery 17 Connecting the Po...

Страница 9: ...Configuring Connection Settings 42 Regional Preferences 43 Configuring Regional Preferences 43 Security 45 Setting Your PIN 45 Enabling Disabling Security Protection 47 Choose a Utility 47 Clear All F...

Страница 10: ...4 Configuring Channels for Tilt 85 Configuring Access Channels 85 Configuring Telemetry Frequency 86 AutoTests 88 Configuring AutoTest for Cable Modem 88 Configuring AutoTest for Video Channels 89 Bui...

Страница 11: ...s 113 Chapter 7 AutoTest Mode 115 AutoTest Overview 116 Combo Test 116 Video Channels 116 Home Certification 116 Proof of Performance 116 Cable Modem 116 AutoTests Tab 116 Combo Test 116 Running a Com...

Страница 12: ...le Modem Results 146 DOCSIS Status View 146 Chapter 8 Measure Mode Basic Tab 149 Basic Measurement Modes 150 Level 150 MiniScan 150 Full Scan 150 Tilt 150 Constellation 150 FDR 150 Return QAM Generato...

Страница 13: ...nformation Bar 163 Channel Status Area 163 Understanding Full Scan Results table 164 Measurement Information Area 165 Setting the Full Scan Speed 165 Enabling Channels for Full Scan 166 Enabling Audio...

Страница 14: ...rker 183 Progress Bar 183 Status 183 Using Zoom 183 Modifying FDR Configuration Settings 183 Viewing FDR Results 184 Return QAM Generator 184 Using the Return QAM Generator 185 Enable Disable Transmit...

Страница 15: ...iewing DQI Results 194 Return Loopback 194 Performing Return Loopback 195 Enabling Disabling Transmit 196 Setting the Transmit Level 196 Performing a Transmit Reference 196 Reading Measurement Graphs...

Страница 16: ...13 Selecting a Different DOCSIS Channel 214 Viewing Registration Results 214 Viewing Throughput Results 215 Throughput Graphs 215 Viewing Packet Loss Results 215 Packet Loss 216 Viewing Packet Loss Re...

Страница 17: ...232 Navigating the Cable Modem Information System Screen 233 VoIP 234 Configuring DSAM for VoIP Tests 235 Running a VoIP Test 235 Accepting a Call 240 Declining a Call 241 Selecting the Limit Sets 241...

Страница 18: ...ld View 259 Understanding Field View Results 264 Graph 265 Graph Information Bar 265 Marker Information Area 265 Viewing Field View Results 265 Ingress Resistance 266 Measuring Ingress Resistance 266...

Страница 19: ...pless Sweep 285 Running a Sweepless Sweep 285 Understanding Sweepless Sweep Results 287 Measurement Information Area 287 Graph 287 Graph Information Bar 287 Marker Status Area 288 Viewing Sweepless Sw...

Страница 20: ...air 309 Equipment Return Instructions 309 Warranty information 310 Global Services and Solutions 312 System Deployment and Field Engineering 313 Training 313 Instructor led Training 313 Public Courses...

Страница 21: ...er Rear View 15 Figure 10 High Capacity External Power Components 16 Figure 11 Standard Capacity External Power Components 18 Figure 12 DSAM Product Family Series Field Meter Bottom View 24 Figure 13...

Страница 22: ...Tab Security 46 Figure 34 Configure Administer Security 46 Figure 35 Configure General Tab Choose a Utility 48 Figure 36 Configure Choose a Utility 48 Figure 37 Configure General Tab Clone 49 Figure...

Страница 23: ...78 Figure 68 Configure Downstream Plans 78 Figure 69 Configure Select a Channel to Edit 80 Figure 70 Configure Edit Channel 81 Figure 71 Configure Select MiniScan Channels 84 Figure 72 Configure Selec...

Страница 24: ...Tab Synchronize 108 Figure 101 Access Synchronize 108 Figure 102 Access Browser Tab WFA Browser 109 Figure 103 Access WFA Browser 110 Figure 104 Access Browser Tab Local Browser 112 Figure 105 Access...

Страница 25: ...st AutoTest in Progress 140 Figure 133 AutoTest Proof of Performance 141 Figure 134 AutoTest Video AutoTest Results 141 Figure 135 AutoTest DOCSIS in Progress 144 Figure 136 AutoTest DOCSIS AutoTest 1...

Страница 26: ...FDR 181 Figure 166 Measure Mode FDR Locate 182 Figure 167 Configure FDR Settings 184 Figure 168 Measure Mode Basic Tab Return QAM Generator 185 Figure 169 Measure Mode Return QAM Generator 186 Figure...

Страница 27: ...gmentation 223 Figure 200 Measure Mode DOCSIS Quality view 224 Figure 201 Measure Mode Service Tab Ethernet 226 Figure 202 Measure Bind Results 227 Figure 203 Measure Mode Ethernet 227 Figure 204 Meas...

Страница 28: ...232 Spectrum Downstream Spectrum 254 Figure 233 Spectrum Downstream Spectrum 255 Figure 234 Downstream Spectrum Center Frequency 256 Figure 235 Downstream Spectrum Dwell Time 257 Figure 236 Measure M...

Страница 29: ...ure 254 Measure Mode Sweepless Sweep 285 Figure 255 Measure Mode Sweep Tab 286 Figure 256 Measure Mode Sweepless Sweep 286 Figure 257 Measure Mode Sweepless Sweep 287 Figure 258 Measure Mode Sweep Tab...

Страница 30: ...List of Figures xxvi DSAM Help User Guide Revision 001 21128026 R001 DSAM Help User Guide book Page xxvi Thursday February 5 2009 2 02 PM...

Страница 31: ...Shift Key Shortcuts 6 Table 9 Title Bar Icons 10 Table 10 Battery Charge and Operation Values 22 Table 11 Standard Capacity Charge LED Indications 23 Table 12 High Capacity Charge LED Indications 25 T...

Страница 32: ...82 Table 33 Digital Channel Parameters 83 Table 34 DOCSIS Channel Parameters 83 Table 35 Telemetry Settings Parameters 87 Table 36 PC Connection Parameters 98 Table 37 WFA Browser Settings Parameters...

Страница 33: ...List of Tables DSAM Help User Guide Revision 001 xxix 21128026 R001 DSAM Help User Guide book Page xxix Thursday February 5 2009 2 02 PM...

Страница 34: ...List of Tables xxx DSAM Help User Guide Revision 001 21128026 R001 DSAM Help User Guide book Page xxx Thursday February 5 2009 2 02 PM...

Страница 35: ...s Guide Purpose and Scope on page xxxii Assumptions on page xxxii Related Information on page xxxii Technical Assistance on page xxxii Conventions on page xxxiv 21128026 R001 DSAM Help User Guide book...

Страница 36: ...ced users who want to use the DSAM Product Family Series effectively and effi ciently We are assuming that you have basic computer and mouse track ball experience and are familiar with basic telecommu...

Страница 37: ...Multimedia Products 1 800 428 424 Ext 8350 America 1 317 788 9351 Ext 8350 World Wide catv support jdsu com Europe Africa and Mid East 49 0 7121 86 1345 Europe hotline europe jdsu com 800 882 85822 E...

Страница 38: ...wn is displayed in this type face Type a set exe in the dialog box Variables appear in this typeface Type the new hostname Book references appear in this typeface Refer to Newton s Telecom Dic tionary...

Страница 39: ...xample This symbol represents a general hazard This symbol represents a risk of electrical shock NOTE This symbol represents a Note indicating related information or tip WARNING Indicates a potentiall...

Страница 40: ...About This Guide Conventions xxxvi DSAM Help User Guide Rev 001 21128026 R001 DSAM Help User Guide book Page xxxvi Thursday February 5 2009 2 02 PM...

Страница 41: ...general description of the DSAM Product Family Series Topics discussed in this chapter include the following About DSAM Product Family Series on page 2 Mode Keys on page 4 Shift Keys on page 4 Additio...

Страница 42: ...e Rev 001 About DSAM Product Family Series Figure 1 DSAM Product Family Series Field Meter Front Panel Layout Display Screen Display Softkeys Enter key Mode keys Shift key Power key Alphanumeric keys...

Страница 43: ...Meter Info Table 6 Obtaining DSAM Information General Channel Plan Limit Set User Name Date Last Synchronized Status Time Date Date Calibrated Temperature Memory Available Details Serial Number Softw...

Страница 44: ...and frequently used measurement modes Shift 3 means that you press the Shift key and then press the 3 key Figure 3 DSAM Mode Keys Table 7 Shift Key Shortcuts Function Key Sequence Icon Description Spe...

Страница 45: ...e measurement modes Apply Best Reference Setting Shift 9 Automatically adjust the analog meter to the best reference setting when applicable Use the arrow keys to adjust the setting by one 1 dB per ke...

Страница 46: ...Ethernet CM Diagnostics Page VoIP Downstream Spectrum Sweep Field View WFA Browser Local Browser Digital Quality Index DQI Table 8 Function Shift Key Shortcuts Function Key Sequence Description Level...

Страница 47: ...describes navigating the DSAM interface and the func tionality of the keys The topics discussed in this chapter are The Keypad on page 8 The User Interface on page 9 Accessing Help on page 10 21128026...

Страница 48: ...cess functions within one of the following modes press one of the round mode keys AutoTest Measure Access Configure Alphanumeric Keypad Use the alphanumeric keys to enter numeric values letters and sp...

Страница 49: ...e the DSAM in Standby mode up to 45 minutes or turn the meter off The User Interface The title bar at the top of the screen displays status indicators during certain conditions These indicator symbols...

Страница 50: ...access Help text as questions occur or easily review all of the text associated with a particular function as a short tutorial before attempting a task To access Help press Shift or Shift 5 on the alp...

Страница 51: ...topic 2 Press ENTER The Help submode menu for that topic is displayed Figure 7 3 To specify the Help text you would like to review use the arrow keys again to select a topic 4 Press ENTER Accessing He...

Страница 52: ...ard to the selected menu option or backward to the last viewed Help screen 1 To return to the beginning of the last active mode press the Exit softkey 2 To display the Help main menu Figure 8 use the...

Страница 53: ...Product Family Series battery The topics discussed in this chapter are Installing and Maintaining the EZ Charge Battery on page 14 Installing and Maintaining the Standard Capacity Battery on page 17...

Страница 54: ...the cavity of the meter until the top edge of the battery latches into place Removing the Battery To remove the battery 1 Ensure the power is off 2 Hold the meter securely with the display screen faci...

Страница 55: ...M Product Family Series a 12 volt DC universal power supply module a power cord and a 12 volt DC in vehicle power cable To connect the external power components Figure 10 on page 16 to the DSAM Produc...

Страница 56: ...into the connection port 5 Insert power cord male plug to an AC power source when you are ready to power the meter or charge the battery If you are using the DC connector connect it to an appropriate...

Страница 57: ...edge at the bottom of the meter 3 Gently lower the battery into the cavity of the meter until the top edge of the battery latches into place Removing the Battery To remove the battery 1 Hold the DSAM...

Страница 58: ...n the manner displayed in Figure 10 on page 16 IMPORTANT Read all safety instructions in the front of this guide before attempt ing to power the meter or charge the battery Important Safety Instructio...

Страница 59: ...rd plug to an AC power source when you are ready to power the meter or charge the battery If you are using the DC connector connect it to an appropriate 12 volt DC power source Making Additional Conne...

Страница 60: ...Chapter 3 Battery Installation Making Additional Connections 20 DSAM Help User Guide Rev 001 21128026 R001 DSAM Help User Guide book Page 20 Thursday February 5 2009 2 02 PM...

Страница 61: ...g the DSAM This chapter describes the test results that you gather when running a test Test results described in this chapter are as follows Powering the Meter on page 22 21128026 R001 DSAM Help User...

Страница 62: ...he meter 1 For typical battery charging fast charge or maximum capacity and normal operational values IMPORTANT Read all safety instructions in the front of this guide before attempt ing to power the...

Страница 63: ...required Understanding the Standard Capacity Battery LED s There are two LED indicator lights on your DSAM Product Family Series standard capacity charger module the Power LED and the Charge LED The...

Страница 64: ...al charging conditions this LED should remain on constantly A flashing LED is indicative of a fault condition To inter pret the CHARGE LED indications review Table 12 Green On constant Fast charge cyc...

Страница 65: ...charging To begin and maintain the charge mode the battery temperature should be approximately between 0 C 32 F and 50 C 122 F The charge mode automatically resumes when the battery temperature return...

Страница 66: ...Chapter 4 Powering the DSAM Powering the Meter 26 DSAM Help User Guide Rev 001 21128026 R001 DSAM Help User Guide book Page 26 Thursday February 5 2009 2 02 PM...

Страница 67: ...y of the instrument Topics discussed in this chapter are as follows Overview on page 28 Configure General Tab on page 28 Configure Measure Tab on page 55 Configure Channel Plan Tab on page 77 Configur...

Страница 68: ...et your data management needs Configure General Tab The Configure mode General tab enables you to edit the following configuration areas for the DSAM Adjust contrast Adjust sounds Optimize battery lif...

Страница 69: ...hren heit or 20 to 50 degrees Celsius The factory default for screen contrast is 50 Configuring Screen Contrast To configure screen contrast 1 Press Configure 2 Press the General softkey 3 Using the a...

Страница 70: ...tment 7 Press the Done softkey Sound Use the Adjust Sounds screen to change the volume of sounds and the sensitivity of the microphone Configuring Sounds To configure sounds 1 Press Configure 2 Press...

Страница 71: ...lect the parameter you want to edit 6 Press ENTER 7 Using the arrow keys select an option 8 Press ENTER 9 Press the OK softkey Figure 15 Configure General Tab Sounds Figure 16 Configure Adjust Sounds...

Страница 72: ...Sound Parameters Name Description System Sounds The sound level of beeps and other noises made by the meter Valid options are Off Quiet Medium and Loud The default option is Medium System Speaker Leve...

Страница 73: ...oftkey Figure 18 Configure Optimize Battery Life NOTE Press Shift Shift to turn the backlight on or off Table 14 Battery Conservation Parameters Name Description Meter Off The number of minutes of non...

Страница 74: ...ure 2 Press the General softkey 3 Using the arrow keys select About Me 4 Press ENTER Backlight Off The number of seconds of non activity before the screen dims Valid options are Always After 5 seconds...

Страница 75: ...ent date and time Figure 20 Configure Enter Your Info NOTE Press the 1 key repeatedly to access a variety of special charac ters etc then press ENTER Table 15 About Me Parameters Name Description My N...

Страница 76: ...ftkey 3 Using the arrow keys select Date and Time 4 Press ENTER 5 Using the arrow keys select the parameter you want to edit 6 Press ENTER 7 Using the arrow keys and the alphanumeric keypad edit the v...

Страница 77: ...nfigure the printer 1 Press Configure 2 Press the General softkey 3 Using the arrow keys select Printer 4 Press ENTER NOTE To change the date format see Regional Preferences on page 43 Table 16 Date a...

Страница 78: ...work setting Use the Configure Ethernet Network screen to specify an alternate IP address subnet mask default gateway and DNS server Figure 24 Configure Configure Printer Table 17 Printer Parameters N...

Страница 79: ...y 3 Using the arrow keys select Ethernet Network 4 Press ENTER 5 Using the arrow keys select the parameter you want to edit 6 Press ENTER 7 Using the arrow keys and the alphanumeric keypad edit the va...

Страница 80: ...ask The subnet mask for the meter A subnet mask is used in the IP addressing system which divides the IP address in two parts the network part and the host part The subnet mask works by masking out th...

Страница 81: ...ess ENTER 7 Using the arrow keys and the alphanumeric keypad edit the value 8 Press ENTER 9 Press the OK softkey RF Network Parameters RF network parameters are the same as Ethernet parameters Refer t...

Страница 82: ...g Connection Settings To configure connection settings 1 Press Configure 2 Press the General softkey 3 Using the arrow keys select Connection 4 Press ENTER 5 Press ENTER 6 Using the arrow keys select...

Страница 83: ...perfor mance units Configuring Regional Preferences To configure regional settings 1 Press Configure 2 Press the General softkey 3 Using the arrow keys select Regional Preferences 4 Press ENTER Table...

Страница 84: ...er options Table 20 Regional Preferences Parameters Name Description Language The language displayed in the user interface Options are English French German and Spanish Other languages may be installe...

Страница 85: ...f measure used to select the temperature options Valid options are Fahrenheit or Celsius The default option is Fahrenheit Distance Units The unit of measure used to select the distant or length option...

Страница 86: ...ect Set your personal identification number PIN 6 Press ENTER 7 Type your four digit PIN using only digits 0 through 9 8 Press the Next softkey 9 Type your PIN again to confirm it 10 Press the OK soft...

Страница 87: ...Files This utility deletes all measurement files and channel plans currently stored in your meter including protected files Restore Factory Defaults This utility restores all configuration parameters...

Страница 88: ...configuration parameters channel plans and limit plans between meters Sending Settings To send settings 1 Connect the meters via Ethernet cable The Ethernet port is located at the top of each meter Us...

Страница 89: ...ing the arrow keys select Send settings from this meter 7 Press the Select softkey 8 Using the arrow keys and the Select softkey select or deselect the configuration group s you want to clone 9 Press...

Страница 90: ...the top of each meter Use an Ethernet crossover cable or a standard ethernet cable with a crossover adapter to connect meters 2 Press Configure 3 Press the General softkey 4 Using the arrow keys selec...

Страница 91: ...the Keypad 6 Press ENTER An image of the keypad is displayed When you press each key on the pad it is highlighted on the screen if functioning properly The key should remain highlighted as long as yo...

Страница 92: ...Configure 3 Press the General softkey 4 Using the arrow keys select Diagnostic 5 Press ENTER 6 Using the arrow keys select Use Virtual DSAM 7 Press the Select softkey Figure 41 Configure Keypad Test N...

Страница 93: ...e Bind Results screen displays network assignments IP address Subnet address and Default Gateway and meter information CPE MAC address 8 Launch the TPP Client application from your PC 9 Click DSAM Rem...

Страница 94: ...tion menu select Connect to Meter The Connect to Meter window is displayed 11 From the Bind Results screen Figure 42 type the IP address 12 Press the OK softkey Figure 44 TPP JDSU Remote DSAM Figure 4...

Страница 95: ...Other Settings Return QAM Generator Test Point Compensation Sweep Settings The Sweep Settings screen enables you to set the sweep tilt limit and reverse sweep port parameters Configuring Sweep Setting...

Страница 96: ...eters Name Description Tilt Compensa tion Sweep Tilt Compensation is different from the stan dard DSAM Tilt mode Typically Tilt Compensation is used to adjust the sweep response on a branch of a netwo...

Страница 97: ...ep max min value or sweep peak to valley value both in dB delta Thus a Sweep Limit Value of 2 0 dB allows a sweep max min value in the DSAM sweep display no greater than 1 0 to 1 0 dB on either side o...

Страница 98: ...define remain constant for all channel plans and measurement modes Configuring Limit Sets To configure limit sets 1 Press Configure 2 Press the Measure softkey 3 Using the arrow keys select Limit Set...

Страница 99: ...n is displayed to the left of a limit set it indicates that the limit set is locked and requires a PIN entry prior to editing To reset the currently selected parameter to its factory default value pre...

Страница 100: ...dB The peak to valley is the highest level in the chan nel plan less the lowest level in the channel plan or the delta between the highest and lowest levels in the channel plan The maximum peak to va...

Страница 101: ...t is set to MER in Regional Preferences The default value is 1 55 if the digital performance unit is set to EVM in Regional Preferences Max Pre BER The maximum bit error rate prior to forward error co...

Страница 102: ...it 6 Press ENTER Figure 51 Configure Measure Tab DOCSIS Throughput Figure 52 Configure DOCSIS Throughput NOTE The default values for the server IP address and file to be trans ferred are maintained by...

Страница 103: ...tings To configure FDR settings 1 Press Configure 2 Press the Measure softkey 3 Using the arrow keys select FDR Settings 4 Press ENTER Table 23 DOCSIS Throughput Parameters Name Description Downstream...

Страница 104: ...ure FDR Settings Table 24 FDR Parameters Name Description Resolution of Measurement The resolution of measurement determines the number of data points maximum distance of and distance resolution accur...

Страница 105: ...n The velocity of propagation VOP is a property of the cable in use and greatly affects the measure ment accuracy Possible values are 0 3 through 1 0 The default value is 820 Cable Compen sation Valid...

Страница 106: ...AC Media Access Control address for the Customer Premises Equip ment CPE in hexadecimal format Cable Modem Roving MAC Address The roving MAC address for the Cable Modem in hexadecimal format MTA Rovin...

Страница 107: ...IS Valid options are BPI or BPI The default value is BPI Channel Order for Lists and Tun ing Select an option to sort by channel or frequency for lists and tuning Valid options are Channel and Fre que...

Страница 108: ...he alphanumeric keypad edit the value OR 6 Using the arrow keys select an option 7 Press the OK softkey Figure 57 Configure Measure Tab VoIP Check NOTE For more accurate results JDS Uniphase Corporati...

Страница 109: ...e numerical identification logical address assigned to the server that identifies it to the net work The valid range for this value is 0 0 0 0 to 255 255 255 255 All IP addresses are numeric only Ethe...

Страница 110: ...range is 5 00 to 55 00 MHz The default value is 5 00 Level The valid range is 8 0 to 58 0 dBmV The default value is 8 00 Modulation Type The type of modulation used to transmit signals Valid options a...

Страница 111: ...inside each saved measurement file and permanently associated with the file Also TPC icons display for each mode If a mode is created that has a total effect of 0 dB on the current mode the icon does...

Страница 112: ...ct Test Point Compensation 4 Press ENTER NOTE Forward TPC values are applied to all modes except Reverse Sweep and Reverse Alignment modes Reverse TPC values are only applied to Reverse Sweep and Reve...

Страница 113: ...the alphanumeric keypad edit the value 9 Press the OK softkey Editing a TPC Plan To edit a TPC plan 1 Using the arrow keys select the TPC plan you want to edit 2 Press the File softkey 3 Using the arr...

Страница 114: ...the OK softkey Figure 64 Configure Edit TPC Plan NOTE The sum of the Reverse Internal Loss Reverse External Loss Reverse Probe Loss and Reverse Telemetry Level must be between 100 dBmV and 55 dBmV ho...

Страница 115: ...to 10 dBmV The default value is 0 0 dB Reverse External Loss Example A distribution tap value on a drop The sum of the internal external and probe losses plus the Telemetry level must be greater than...

Страница 116: ...ey 3 Using the arrow keys select Delete 4 Press ENTER 5 Press the Yes softkey to confirm Viewing a Graphical Summary To view a graphical summary 1 Using the arrow keys select the TPC plan you want to...

Страница 117: ...ithin a plan to meet a variety of measurement objectives Use channel plan configuration to Select a channel plan Edit a channel plan Enable disable channels in a channel plan Configure MiniScan channe...

Страница 118: ...the parameters of individual channels within a plan to meet a variety of measurement objectives Choosing a Channel Plan To select a channel plan 1 Press Configure 2 Press the Chan Plan softkey 3 Usin...

Страница 119: ...nels within the plan You can change the parameters of indi vidual channels or add and delete channels from the plan 1 Press Configure 2 Press the Chan Plan softkey 3 Using the arrow keys select Downst...

Страница 120: ...w channel Delete To delete the selected channel Enabled Disabled To enable disable the current channel A disabled channel does not appear in any measurements but remains in your channel plan until you...

Страница 121: ...ciates the channel s number to programming The label is displayed to the left of the channel number on most screens Frequency The rate at which the signal pattern is repeated Table 30 TV Channel Param...

Страница 122: ...The video signal type Valid options are NTSC B Pal B SECAM B1 PAL The default option is NTSC Scrambled An indication of whether the channel is scrambled or not Valid options are Yes and No CN Enabled...

Страница 123: ...and No The default option is No Table 34 DOCSIS Channel Parameters Name Description Enabled Whether or not the channel is enabled Options are Yes and No Type The channel type Options are TV Single Du...

Страница 124: ...Channels 8 Press ENTER 9 Using the arrow keys select a channel you want to include 10 Press the Select softkey Symbol Rate The symbol rate corresponds to the size and shape bandwidth of the digital si...

Страница 125: ...ct the plan you want to work with 6 Press the Plan softkey 7 Using the arrow keys select Tilt Channels 8 Press ENTER 9 Using the arrow keys select each channel you want to include 10 Press the Select...

Страница 126: ...w keys select the channel you want to include 10 Press the Select softkey Configuring Telemetry Frequency The Telemetry frequency is the frequency used to transmit data from the headend modem to the D...

Страница 127: ...Name Description SDA 5500 Telemetry Frequency MHz The transmission frequency of the SDA 5500 SDA 5510 Telemetry Frequency MHz The transmission frequency of the SDA 5510 Single Multi User Reverse Sweep...

Страница 128: ...le Modem AutoTest or Home Certi fication test Configuring AutoTest for Cable Modem To configure AutoTest for cable modems 1 Press Configure 2 Press the Chan Plan softkey 3 Using the arrow keys select...

Страница 129: ...DOCSIS channel you want to include or exclude 8 Press the Select softkey 9 Press the Done softkey Configuring AutoTest for Video Channels To configure AutoTest for video channels 1 Press Configure 2...

Страница 130: ...Using the arrow keys select AutoTests 4 Press ENTER 5 Using the arrow keys select Video Channels 6 Press the Configure softkey Figure 78 Configure Channel Plan Tab AutoTests Figure 79 Configure Select...

Страница 131: ...key to include the measurement as a part of the AutoTest The BER softkey is enabled when bit error ratio measurements are available on certain digital channels 11 Press the Done softkey Build New Plan...

Страница 132: ...ct Build New Plan 4 Press ENTER 5 Using the arrow keys and the alphanumeric keypad type the plan name 6 Press the Next softkey 7 Press ENTER Figure 81 Configure Channel Plan Tab Build New Plan Figure...

Страница 133: ...plan 9 Press ENTER 10 Press the Next softkey 11 Using the arrow keys and the alphanumeric keypad enter the stop frequency up to 1000 MHz 12 Press the Next softkey Figure 83 Configure Build a New Plan...

Страница 134: ...meter searches the cable system for active channels and displays the following the plan name you entered the template you used the stop frequency the number of channels found Figure 85 Configure Buil...

Страница 135: ...to create or edit a location setting Configuring Location Settings To configure location settings 1 Press Configure 2 Press the Chan Plan softkey 3 Using the arrow keys select Location Settings Figure...

Страница 136: ...to define the IP address The Access tab also provides WFA browser parameters to enter the preferred ethernet or RF connection home URL proxy server param eters optional and CM diagnostic web page info...

Страница 137: ...n 1 Press Configure 2 Press the Access softkey 3 Using the arrow keys select PC Connection 4 Press ENTER 5 Using the arrow keys select the parameter you want to edit 6 Press ENTER Figure 90 Configure...

Страница 138: ...ation parameters are dis abled you cannot change them from your meter Table 36 PC Connection Parameters Name Description Preferred Con nection The connection type Valid options are Ethernet and RF The...

Страница 139: ...R 5 Using the arrow keys select the parameter you want to edit 6 Press ENTER 7 Using the arrow keys or the alphanumeric keypad edit the value 8 Press ENTER 9 Press the OK softkey Figure 92 Configure A...

Страница 140: ...vary for each network Proxy Usage The DSAM allows a proxy server within the Browser and Web Access Test A proxy can be used as a caching mechanism or as a part of a back end fire wall To enable a pro...

Страница 141: ...d instructions for using the DSAM Product Family Series Access Mode features Topics discussed in this chapter are as follows Overview on page 102 Access Files Tab on page 102 Access Browser Tab on pag...

Страница 142: ...file within a folder Rename or examine the properties of a folder you cannot rename the Default Folder Delete a selected folder you cannot delete the Default Folder Purge all folders that have been sy...

Страница 143: ...7 Using the arrow keys select a file 8 Press the Open softkey or ENTER Creating a Folder To create a new folder 1 Press Access 2 Press the Files softkey Figure 94 on page 102 3 Using the arrow keys se...

Страница 144: ...Figure 94 on page 102 3 Using the arrow keys select Work Folders 4 Press ENTER Figure 95 on page 103 5 Press the Folders softkey 6 Using the arrow keys select the folder you wish to delete 7 Using th...

Страница 145: ...8 Press the Yes softkey All synchronized folders disappear from the list Renaming a Folder To rename a folder 1 Press Access 2 Press the Files softkey Figure 94 on page 102 3 Using the arrow keys sele...

Страница 146: ...e 95 on page 103 5 Using the arrow keys select the folder you want to work with 6 Press the Folders softkey 7 Using the arrow keys select Properties 8 Press ENTER Synchronization The Synchronize funct...

Страница 147: ...cable to a computer or network device and to the Ethernet port on the top of the meter OR 3 Connect a Coax cable to an RF connection and to RF connection 1 on the back of the meter Synchronizing File...

Страница 148: ...s Figure 100 Access Files Tab Synchronize Figure 101 Access Synchronize NOTE Once synchronization begins you cannot cancel it It must complete or time out on its own Once synchronization is complete t...

Страница 149: ...select your connection type and enter proxy information follow the instructions under Configuring WFA Browser Settings on page 98 2 To select a DOCSIS channel follow the instructions under Configurin...

Страница 150: ...re 103 Access WFA Browser NOTE You can connect a USB mouse to the meter instead of using the graphical pointer Table 38 WFA Browser Graphical Pointer Pointer Motion The pointer motion is controlled by...

Страница 151: ...the most recent version of the current page Alpha Only Toggles from normal mode to text only mode Up softkey Scrolls toward the top of the page Down softkey Scrolls toward the bottom of the page Alpha...

Страница 152: ...ction enables you to open a saved browser page Since it does not connect to an Ethernet or RF network no network or server configurations are required Keypad and pointer functions in the Local Browser...

Страница 153: ...uring Web Access To configure web access 1 To select your connection type and enter proxy information follow the instructions under Configuring WFA Browser Settings on page 98 2 To select a DOCSIS cha...

Страница 154: ...e arrow keys select Web Access Test 4 Press ENTER If the test is successful the DSAM Web Access Test screen is displayed Figure 106 Access Browser Tab WFA Browser Figure 107 Access DSAM Web Access Tes...

Страница 155: ...his chapter describes how to configure execute and interpret the results of automated test sequences available on the DSAM AutoTest Overview on page 116 AutoTests Tab on page 116 21128026 R001 DSAM He...

Страница 156: ...al combina tion of analog and digital video channels as well as DOCSIS connec tivity and data tests DOCSIS data tests must be enabled through TPP Proof of Performance A video channels test that can be...

Страница 157: ...modem proof or custom limits 1 3 2 Press AutoTest 3 Using the arrow keys select Combo Test 4 Press ENTER 5 Using the arrow keys select Channel Plan Figure 108 AutoTest AutoTests Tab NOTE The limit set...

Страница 158: ...ure softkey Video Channels See Configuring AutoTest for Video Chan nels on page 89 Cable Modem See Configuring AutoTest for Cable Modem on page 88 15 Press ENTER NOTE To perform the test without check...

Страница 159: ...while they are in prog ress To stop the Combo Test press the Stop softkey NOTE To save the results to a file press the Save softkey then follow step 4 through step 13 under Saving Results on page 198...

Страница 160: ...splays the results of individual tests for the currently selected channel When a measure ment falls outside the acceptable range an arrow to the right of the numeric value indicates the direction in w...

Страница 161: ...rrow keys select DOCSIS Summary 3 Press ENTER DOCSIS Status View To display the DOCSIS status view 1 From the DOCSIS summary view use the arrow keys to highlight the DOCSIS channel you wish to view Fi...

Страница 162: ...t an installation by performing this test at various locations to determine which components require repair or replacement You can store the test results for later reference Running a Video Channels T...

Страница 163: ...t checking the results against limit values select Off If you select Off as the Limit Plan value no pass fail information is displayed in the test results NOTE Use Regional Preferences on page 43 to s...

Страница 164: ...utoTest screen Figure 116 AutoTest AutoTest in Progress NOTE The Help system is disabled during all tests while they are in prog ress To stop the test press the Stop softkey NOTE To save the results t...

Страница 165: ...and the currently selected channel Individual Test Results This area displays the results of individual tests for the currently selected channel When a measure ment falls outside the acceptable range...

Страница 166: ...necessary configure the limit sets to meet your needs for tap ground block TV cable modem proof or custom limits 1 3 2 Press AutoTest 3 Using the arrow keys select Home Certification 4 Press ENTER Cha...

Страница 167: ...3 Using the arrow keys select an option Figure 119 AutoTest Work Folders NOTE Note the name of the folder in the Active Work Folder box If the folder name is incorrect press the Back softkey and selec...

Страница 168: ...ress the Configure softkey Video Channels See Configuring AutoTest for Video Chan nels on page 89 Cable Modem See Configuring AutoTest for Cable Modem on page 88 21 Press ENTER 22 Press the Done softk...

Страница 169: ...AutoTest Home Certification NOTE To save the results to a file press the Save softkey then follow step 4 through step 13 under Saving Results on page 198 If you chose the wrong limit set before condu...

Страница 170: ...is area displays the results of individual tests for the currently selected channel When a measure ment falls outside the acceptable range an arrow to the right of the numeric value indicates the dire...

Страница 171: ...ng the arrow keys select DOCSIS Summary 3 Press ENTER Figure 123 AutoTest Home Certification Video Summary N NOTE To save the results to a file press the Save softkey then follow step 4 through step 1...

Страница 172: ...l for the selected channel 1 Using the arrow keys select the channel you wish to view 2 Press the View softkey 3 Using the arrow keys select Registration N NOTE To save the results to a file press the...

Страница 173: ...h to view 2 Press the View softkey 3 Using the arrow keys select VoIPCheck 4 Press ENTER Figure 126 AutoTest Home Certification Registration N NOTE To save the results to a file press the Save softkey...

Страница 174: ...ck TPP software 1 Press the Save softkey 2 Using the arrow keys and the alphanumeric keypad type the file name in the File Name box 3 Press the Save softkey N NOTE To save the results to a file press...

Страница 175: ...nce Use scheduled tests for 24 Hour AutoTests per FCC AutoTests with C N Hum BER AutoTests that automatically run at a scheduled interval Running a Proof of Performance Test To run a Proof of Performa...

Страница 176: ...1 Using the arrow keys select an option 12 Press ENTER 13 Using the arrow keys select Filename to Save to 14 Press ENTER Figure 129 AutoTest Configure Proof of Performance NOTE To perform the test wit...

Страница 177: ...name in the created folder If you set up a series of scheduled tests the saves the results of each test to a file of the same name with an appended sequential number test1_ test_2 etc in the created...

Страница 178: ...igure Scheduling screen is displayed 26 Using the arrow keys select Interval Between Tests in minutes 27 Press ENTER 28 Using the numeric keys type the number of minutes between when the meter shuts d...

Страница 179: ...keys select Test Stop Date 43 Press ENTER 44 Using the numeric keys type the start time of the first test 45 Press ENTER 46 Using the arrow keys and the alphanumeric keypad enter the value 47 Press EN...

Страница 180: ...a new file name Once the first test in a series is complete the meter shuts down until the next scheduled test If you attempt to power up the meter while it is running a series of Proof of Performanc...

Страница 181: ...iew your test results in relation to a different limit set without rerunning the test Figure 134 AutoTest Video AutoTest Results Table 43 Home Certification Test Results Name Description Overall Resul...

Страница 182: ...side the acceptable range an arrow to the right of the numeric value indicates the direction in which the failure occurred An up arrow indicates a measurement over the limit range A down arrow indicat...

Страница 183: ...NOTE The limit set parameters you set remain constant for all channel plans and measurement modes NOTE To perform the test without checking the results against limit values select Off If you select Of...

Страница 184: ...ring AutoTest for Video Chan nels on page 89 Cable Modem See Configuring AutoTest for Cable Modem on page 88 14 Press ENTER 15 Press the Start softkey The results appear on the DOCSIS AutoTest screen...

Страница 185: ...ess the Limits softkey and select a different limit set to view your test results in relation to a different limit set without rerunning the test Figure 137 AutoTest Video AutoTest Results Table 44 DO...

Страница 186: ...which the failure occurred An up arrow indicates a measurement over the limit range A down arrow indicates a measurement below the limit range Channel Results A symbol indicating whether the channel p...

Страница 187: ...elp User Guide Rev 001 147 Figure 138 AutoTest Cable Modem Test DOCSIS Channel Status Successful Figure 139 AutoTest Cable Modem Test DOCSIS Channel Status Error 21128026 R001 DSAM Help User Guide boo...

Страница 188: ...Chapter 7 AutoTest Mode AutoTests Tab 148 DSAM Help User Guide Rev 001 21128026 R001 DSAM Help User Guide book Page 148 Thursday February 5 2009 2 02 PM...

Страница 189: ...n page 150 Level on page 151 MiniScan on page 158 Full Scan on page 161 Tilt on page 168 Constellation on page 174 FDR on page 180 Return QAM Generator on page 184 QAM Ingress on page 187 Hum Analysis...

Страница 190: ...of the demodulated digital Quadrature Amplitude Modulation QAM type 64 QAM 128 QAM or 256 QAM signal prior to error correction This option is only available on specific DSAM models FDR Provides a mea...

Страница 191: ...You can tune level measurements by frequency or channel Frequency Tuning measures signal levels at one specific frequency and signal levels can be measured at any discrete frequency within the tuning...

Страница 192: ...ys to highlight Auto Reference Shift 9 then press the ENTER key to automati cally view measurement results in the best reference setting Channel Tuning With Channel Tuning the signal level measurement...

Страница 193: ...for the best viewing or press the View softkey and use the arrow keys to highlight Auto Reference Shift 9 then press the ENTER key to automatically view measurement results in the best reference sett...

Страница 194: ...e modes High Sensitivity Indicator This icon is displayed if QAM Sensitivity is set to high on the Other Settings configuration screen Refer to Other Settings Parameters on page 66 NOTE To save the re...

Страница 195: ...28 4 additional purchase required Deep interleaver channels such as 128 4 require DSAM model 2600 3600 or 6000 If you are using a different model only the level and MER appear Errored Seconds The numb...

Страница 196: ...This area displays the channel s primary audio frequency and level as well as the delta between the video and audio levels Secondary Audio Information This area if broadcast displays the channel s se...

Страница 197: ...aph 5 dB div or 10 dB div Enables you to adjust the vertical resolution of the graph for the best viewing DQI Enables you to view a time elapsed view of DQI measurements on digital channels only if th...

Страница 198: ...erence Running a MiniScan To run a MiniScan 1 Press Measure 2 Press the Basic softkey 3 Using the arrow keys select MiniScan 4 Press ENTER NOTE MiniScan measurement channels are user defined and corre...

Страница 199: ...d the height of the bar represent the signal level of that channel Graph Information Bar This bar displays the highest and lowest frequencies of the MiniScan channels NOTE To save the results to a fil...

Страница 200: ...can 5 Press the Done softkey Viewing MiniScan Results To view MiniScan results in different ways 1 Press the View softkey 2 Using the arrow keys select one of the following options Auto Reference Shif...

Страница 201: ...Shift 8 Suspends measurement updates 3 Press ENTER Full Scan Full Scan measurement displays the carrier levels of the entire channel plan up to 999 channels at a time and displays the audio and video...

Страница 202: ...signal level units as specified in Regional Pref erences on page 43 Figure 148 Measure Mode Basic Tab NOTE To save the results to a file refer to Saving Results on page 198 If you chose the wrong lim...

Страница 203: ...area displays the following information for the current channel Channel type Single TV TV scrambled Dual Digital or DOCSIS Carrier frequency in MHz and measured signal level for the channel Audio icon...

Страница 204: ...measurements for all the channels Both views also display all signal level measurements in the current user selected signal level units as specified in Regional Pref erences on page 43 The Full Scan T...

Страница 205: ...n if applicable High sensitivity indicator Setting the Full Scan Speed To set the scan speed 1 Press the Settings softkey 2 Using the arrow keys select Normal Scan or Fast Scan 3 Press ENTER Figure 15...

Страница 206: ...hannel Plans 3 Press ENTER 4 Press the Plan softkey 5 Using the arrow keys select a channel plan 6 Press the Done softkey 7 Press the Plan softkey 8 Using the arrow keys select Enabled Channels 9 Pres...

Страница 207: ...so the delta portion is clearly displayed To enable audio carrier level measurement 1 Press the Settings softkey 2 Using the arrow keys select Show Audio 3 Press ENTER View Menu To access different f...

Страница 208: ...ilt Tilt is transmission loss in a coaxial cable Transmission loss increases in proportion to the square root of frequency thus affecting the tilt As displayed by the DSAM Tilt measurement displays le...

Страница 209: ...to a file refer to Saving Results on page 198 If no channels are enabled for tilt in the channel plan an error mes sage is displayed If you chose the wrong limit set before conducting the test press t...

Страница 210: ...ents the signal level of that channel A narrow bar width represents a single TV or dual channel type A wide bar width represents a digital or DOCSIS channel type Graph Information Bar This bar display...

Страница 211: ...w keys select Tilt Channels 7 Press ENTER NOTE JDSU does not recommend comparing tilt between analog and dig ital carriers This practice could result in artificial tilt NOTE Tilt measurement channels...

Страница 212: ...row keys 2 Press the Markers softkey 3 Using the arrow keys select Low If the marker is on a channel that is the high pilot or is greater in frequency than the high pilot Low is disabled 4 Press ENTER...

Страница 213: ...he arrow keys to move the marker to the preferred channel then highlight this option from the View menu Full Scan Displays the Full Scan screen Pause Shift 8 Suspends measurement updates Use the left...

Страница 214: ...n measurement also displays Channel number Channel frequency level information Modulation Error Ratio MER Bit Error Ratio BER Pre and Post data Identifying a specific constellation pattern on the grid...

Страница 215: ...y below the channel number is the channel frequency and channel level informa tion Figure 157 Measurement Mode Basic Tab Constellation N NOTE To save the results to a file refer to Saving Results on p...

Страница 216: ...mbols on the constellation grid should be well within the grid lines decision boundaries When the dots approach or exceed these boundaries significant errors are occurring in the transmission of the s...

Страница 217: ...best seen on the grid without the use of the zoom feature Coherent Interference Coherent interference impairments such as CTB CSO and spurs cause the dots on the graph to cluster with an empty space...

Страница 218: ...a few pixels to be thrown from the center Editing the Channel Plan To edit the channel plan see Downstream Plans on page 78 Setting the Sample Refresh Rate To set the number of samples to be processed...

Страница 219: ...re Mode Constellation Refresh Rates NOTE In 64 QAM the following zoom levels are available for viewing Zoom Level 1 8x8 Zoom Level 2 4x4 Zoom Level 3 2x2 In 128 QAM and 256 QAM the following zoom leve...

Страница 220: ...DQI measurements on digital channels only if the hardware supports it QAM Ingress Displays the QAM Ingress screen 3 Press ENTER FDR A frequency domain reflectivity FDR test displays the location and s...

Страница 221: ...tion to pinpoint its distance and amplitude The corresponding information is displayed directly below the graph Understanding FDR Results The FDR graphs distance on the X axis and amplitude on the Y...

Страница 222: ...and is usually specified by the manufacturer Max Precision The maximum precision is the cable attenuation Resolution of Measurement The resolution of measurement determines the number of data points m...

Страница 223: ...raph Progress Bar Displays the status of the measurement cycle Status This area consists of the following Horizontal status dBRL Zoom level Cable compensation status ON or OFF Using Zoom To use the zo...

Страница 224: ...ables you to adjust the vertical resolution of the graph for the best viewing Pause Shift 8 Suspends measurement updates 3 Press ENTER Return QAM Generator DSAM is equipped with this mode so you can e...

Страница 225: ...To use the return QAM generator 1 Press Measure 2 Press the Basic softkey 3 Using the arrow keys select Return QAM Generator 4 Press ENTER Enable Disable Transmit To enable disable transmit 1 To disa...

Страница 226: ...lect one of the following 1 28 Msym s 2 56 Msym s 3 84 Msym s 5 12 Msym s 3 Press ENTER Understanding Return QAM Generator Results Measurement Information Area This area displays information about the...

Страница 227: ...lays the Upstream Spectrum measurement mode Downstream Spectrum Displays the Downstream Spectrum measurement mode 3 Press ENTER QAM Ingress The QAM Ingress mode is a line plot which graphs signal erro...

Страница 228: ...ong with the MER and BER data Using QAM Ingress To use QAM ingress 1 Press Measure 2 Press the Basic softkey 3 Using the arrow keys select QAM Ingress 4 Press ENTER Understanding QAM Ingress Results F...

Страница 229: ...This area consists of the marker name A or B marker frequency in MHz and measured signal level for the frequencies which the markers are on The black square around the letter A or B below the graph d...

Страница 230: ...move the marker on the grid 3 Press ENTER Hum Analysis Hum is the undesirable modulation of the television video carrier by power line frequencies and harmonics or other low frequency distur bances F...

Страница 231: ...ng the test press the Limits softkey and select a different limit set to view your test results in relation to a different limit set without rerunning the test Figure 173 Measure Mode Hum Analysis Fre...

Страница 232: ...age 79 DQI Digital Quality Index DQI additional purchase required for certain models is a real time measurement that detects intermittent impair ments within a downstream digital QAM carrier The DQI m...

Страница 233: ...nel number is the channel frequency and channel level information Figure 174 Measure Mode Basic Tab DQI Figure 175 Measure Mode DQI Measurement Information Area DQI Min Graph Information Bar NOTE For...

Страница 234: ...tests 1 Press the View softkey 2 Using the arrow keys select one of the following options Single Channel Displays measurements one channel at a time First use the arrow keys to move the marker to the...

Страница 235: ...aluable information such as gain loss roll off or frequency response Performing Return Loopback To perform return loopback 1 Press Measure 2 Press the Basic softkey 3 Using the arrow keys select Retur...

Страница 236: ...reen is displayed 4 Using the arrow keys and numeric keypad enter a transmit level between 8 and 58 5 Press the OK softkey Performing a Transmit Reference To Perform a Transmit Reference 1 Connect a s...

Страница 237: ...e diagonal hash lines indicating measurement failure in relation to the selected limit set Reading Line Graphs Bar graphs are comprised of up to three contrasting shades White The background color of...

Страница 238: ...lts and manage saved file folders To save your results 1 Press the File softkey 2 Using the arrow keys select Save 3 Press ENTER Figure 179 Measure DQI Results NOTE To freeze any live fluctuating data...

Страница 239: ...Settings is enabled through TPP the Edit Location Settings screen is displayed 6 Using the arrow keys select the parameter you want to edit 7 Press ENTER OR 8 To use the default location settings pre...

Страница 240: ...ey 2 Using the arrow keys select New 3 Press ENTER 4 Using the alphanumeric keypad enter the folder name 5 Press the OK softkey Changing the Default Folder To change the default folder 1 Press the Fol...

Страница 241: ...ow keys select Open 3 Press ENTER 4 Using the arrow keys select the folder that contains the file you want to open 5 Press the Open softkey 6 Using the arrow keys select the file you want to open 7 Pr...

Страница 242: ...Chapter 8 Measure Mode Basic Tab Saving Results 202 DSAM Help User Guide Rev 001 21128026 R001 DSAM Help User Guide book Page 202 Thursday February 5 2009 2 02 PM...

Страница 243: ...Measure Mode Service tab functionality Topics discussed in this chapter are as follows Service Measurement Modes on page 204 DOCSIS on page 204 Ethernet on page 225 CM Diagnostics Page on page 232 Vo...

Страница 244: ...h the Ethernet Additional purchase required CM Diagnostics Page Displays a cable modem s internal web page Additional purchase required VoIP Enables you to measure voice quality of your PacketCable Vo...

Страница 245: ...guring DSAM for DOCSIS Tests The first thing to check before you run a DOCSIS test is to make sure the CM MAC Address has been provisioned to your Cable Modem Terminal System CMTS To configure DSAM fo...

Страница 246: ...ialization If the DOCSIS Configu ration field is set to Registration with CPE Initialization the DOCSIS results screen is displayed after you run a DOCSIS test In addition you can run data service tes...

Страница 247: ...g MAC address as the default press the Default softkey Figure 185 Measure Mode Select a DOCSIS Channel to Test NOTE Only DOCSIS channels defined in the downstream forward path channel plan are availab...

Страница 248: ...not required if the DOCSIS Configuration is set to Range Only See Configuring DSAM for DOCSIS Tests on page 205 NOTE For instructions on how to save measurement results see Saving Results on page 198...

Страница 249: ...ent limit set without rerunning the test Use the Edit option to edit limit set parameters for tap ground block TV cable modem proof or custom limits 1 through 3 The limit set parameters you set remain...

Страница 250: ...SAM captures the system timing SYNCs upstream channel information UCDs and time slots MAPs and displays the following text next to the second box Acquiring upstream channel data Upstream channel data...

Страница 251: ...d error correction FEC You can view the range measurement data in relation to user config ured limits to determine the pass fail status of the DOCSIS channel Values are continuously updated Only valid...

Страница 252: ...or down arrow head is displayed to the right of the measurement indicating that the value is too high or too low Numeric values that are out of range appear in bold LEVEL Headroom LEVEL Headroom is th...

Страница 253: ...Headroom value is 5 dB EXAMPLE 3 You successfully range with the CMTS Results show that the CMTS instructed the DSAM to transmit a QSPK carrier and the suc cessful transmit level is 42 dBmV The LEVEL...

Страница 254: ...Registration Results During DOCSIS the meter performs registration and displays the internet protocol IP addresses of the dynamic host configuration protocol DHCP trivial file transfer protocol TFTP a...

Страница 255: ...ket loss round trip upstream and downstream and upstream signal to noise ratio SNR results NOTE When using a customer s CM MAC address the config file name may indicate the grade of service the custom...

Страница 256: ...eam and downstream paths as follows Round trip or loop sent packets lost packets and lost ratio Upstream sent packets lost packets and lost ratio Downstream sent packets lost packets and lost ratio Vi...

Страница 257: ...between pings It also displays ping result data including Round trip time Time to live TTL NOTE If your upstream and downstream packet loss and upstream SNR test results are consistently displayed as...

Страница 258: ...sing the arrow keys select the IP address you want to ping 7 Press ENTER 8 Using the arrow keys select Packet Size bytes 9 Press ENTER 10 Using the arrow keys select the packet size you want to send 1...

Страница 259: ...ist The status box lower right corner of the screen displays the reply statistics including Number of pings sent Average return time Number of pings lost Ratio of lost to sent pings Ping data is conti...

Страница 260: ...y Modifying Ping IP Addresses To modify an IP address 1 Using the arrow keys select IP Address 2 Press ENTER Table 45 Ping Parameters Name Description IP Address Select from a list of up to ten of the...

Страница 261: ...7 Press ENTER Viewing VoIPCheck Results The VoIPCheck CMTS Loop test additional purchase required displays VoIP call statistics without MTA provisioning The VoIPCheck CMTS Loop test is a continuous te...

Страница 262: ...Packet loss occurs when packets are lost on a network when packets are delayed too long or when packets arrive out of order Packet loss can cause reconstructed speech to sound choppy and distorted Ji...

Страница 263: ...is 0 0 to 5 0 MOS is computed using the packet loss jitter and delay results R Value The R Value number represents a quantitative measurement value based solely on the packet loss jitter and delay mea...

Страница 264: ...value of continuous live VoIP segmentation Extreme Displays the highest or lowest values detected during VoIP segmentation Packet Stats Displays packet loss delay and jitter values Quality Displays co...

Страница 265: ...trip time time to live TTL packets sent and lost average round trip time and loss to sent ratio See Running Ping Results on page 228 Configuring DSAM for Ethernet Tests Typically an Ethernet test is...

Страница 266: ...rnet 4 Press ENTER When the IP connection activity is complete the Bind Results screen is displayed with detailed results NOTE To save the results to a file refer to Saving Results on page 198 You can...

Страница 267: ...MAC Address Displaying Throughput Results The Throughput view displays Ethernet throughput upstream and downstream test results To display the Throughput view 1 Press the View softkey 2 Using the arr...

Страница 268: ...tured and continuously updated To display Packet Loss results 1 Press the View softkey 2 Using the arrow keys select Packet Loss 3 Press ENTER Running Ping Results Ping results verify the overall down...

Страница 269: ...Size bytes 9 Press ENTER 10 Using the arrow keys select the packet size you want to send 11 Press ENTER 12 Using the arrow keys select the Time Between Pings option 13 Press ENTER 14 Using the arrow k...

Страница 270: ...mber of pings lost Ratio of lost to sent pings Ping data is continuously updated Restoring Ping Test Defaults To restore the default values for Packet Size and Time Between Pings Figure 206 Measure Mo...

Страница 271: ...ing IP Addresses To modify an IP address 1 Using the arrow keys select the IP Address option 2 Press ENTER 3 Using the arrow keys select the IP address you want to edit 4 Press ENTER 5 Press the Setti...

Страница 272: ...ditional purchase required is based on the Ethernet network configuration The cable modem should be connected to the RF network The DSAM must be connected to the cable modem through an Ethernet port T...

Страница 273: ...ss ENTER Navigating the Cable Modem Information System Screen To navigate the Cable Modem Information System screen 1 To scroll up press the Up softkey OR Figure 207 Measure Mode Service Tab CM Diagno...

Страница 274: ...le multimedia terminal interfaces and the Multimedia Terminal Adapter MTA has been successfully initialized you are provided the ability to place and receive a phone call with the meter After a call i...

Страница 275: ...Test To run a VoIP test 1 Press Measure 2 Press the Service softkey 3 Using the arrow keys select VoIP 4 Press ENTER NOTE If no enabled downstream DOCSIS channels are available in the channel plan dur...

Страница 276: ...s the Next softkey 7 Using the arrow keys and the alphanumeric keypad enter or select the roving MAC address 8 Press the Next softkey OR 9 To use the default roving MAC address press the Default softk...

Страница 277: ...tkey OR 13 To use the default MTA MAC address press the Default softkey 14 Press the Start softkey NOTE The roving MAC address must be recognized by your CMTS to achieve VoIP ranging Figure 212 Measur...

Страница 278: ...s the View softkey 16 Using the arrow keys select Call 17 Press ENTER Figure 213 Measure Mode Test in Progress NOTE For instructions on how to save measurement results see Saving Results on page 198 F...

Страница 279: ...e OK softkey If the other party accepts the call DSAM establishes a conversa tion 20 Press the View softkey Figure 215 Measure Mode VoIP Telephone Number NOTE A list of the most recently used phone nu...

Страница 280: ...of the R Value Listening R Value Conversational MOS Listening and MOS Conversational values View Data Displays the Current Maximum and Average results of the Local and Remote packet loss jitter ms an...

Страница 281: ...1 Using the arrow keys select a set of measurement limits Tap Ground Block TV Cable Modem Proof or custom limits 1 3 OR 2 To access the Limit Sets screen select Edit This allows you to edit limit set...

Страница 282: ...onal MOS Listening and MOS Conversational values are computed using the packet loss jitter and delay results These values are intended to give a quantitative assess ment of the call quality The VoIP M...

Страница 283: ...call DSAM establishes a conversa tion 6 Press the View softkey 7 Using the arrow keys select View MOS 8 Press ENTER VoIP MOS Definitions See Measurement Information Area on page 222 for the following...

Страница 284: ...ceive calls and measure packet loss delay and jitter To view VoIP data results 1 Press the View softkey 2 Using the arrow keys select Call 3 Press ENTER 4 Using the arrow keys and the alphanumeric key...

Страница 285: ...6 Press the View softkey 7 Using the arrow keys select View Data 8 Press ENTER View Data Definitions See Measurement Information Area on page 222 for the following definitions Packet Loss Delay Jitte...

Страница 286: ...Chapter 9 Measure Mode Service Tab VoIP 246 DSAM Help User Guide Rev 001 21128026 R001 DSAM Help User Guide book Page 246 Thursday February 5 2009 2 02 PM...

Страница 287: ...Spectrum tab function ality Topics discussed in this chapter are as follows Spectrum Measurement Modes on page 248 Upstream Spectrum on page 248 Downstream Spectrum on page 252 Field View on page 258...

Страница 288: ...spectrum frequency range 4 MHz to 1 GHz in 50 MHz frequency spans with a dynamic range of 60 dB Field View additional purchase required Analyzes and displays ingress and distortion on the upstream pa...

Страница 289: ...l for ingress noise After an installation check the noise level again to compare the previous reading and confirm that install procedures or components did not create new sources of ingress noise Runn...

Страница 290: ...ross the entire frequency range When excessive ingress noise occurs at a specific frequency the measurement line develops a peak on the graph NOTE When you select Edit the limit set parameters you def...

Страница 291: ...e in this mode is 4 45MHz North America or 4 65MHz International with the start and stop frequencies indicated on the horizontal bar at the bottom of the screen As you move the marker across the frequ...

Страница 292: ...iew measurement mode Downstream Spectrum Displays the Downstream Spectrum screen Pause Shift 8 Suspends measurement updates 3 Press ENTER Downstream Spectrum The Downstream Spectrum measurement mode a...

Страница 293: ...forward path as brief as 1 ms Running a Downstream Spectrum To run a downstream spectrum 1 Press Measure 2 Press the Spectrum softkey 3 Using the arrow keys select Downstream Spectrum 4 Press ENTER 5...

Страница 294: ...the marker increments or decrements to the next or previous frequency point in the span 11 To adjust the graph for best viewing of the signal level measure ments use the up and down arrow keys Figure...

Страница 295: ...is also displayed The right side of the Measurement Information area displays the active marker frequency Graph As multiple updates occur the maximum level trace changes only if new levels exceed the...

Страница 296: ...ive levels are displayed Setting the Center Frequency To set the center frequency 1 Press the Settings softkey 2 Using the arrow keys select Center Frequency 3 Press ENTER 4 Using the arrow keys and t...

Страница 297: ...dwell time in milliseconds ms 5 Press the OK softkey Viewing Downstream Spectrum Results To view Downstream Spectrum results 1 Press the View softkey 2 Using the arrow keys select one of the followin...

Страница 298: ...he marker Marker B Sets Marker B as the active marker Use the left and right arrow keys to move the marker 3 Press ENTER Field View The Field View measurement mode additional purchase required is prov...

Страница 299: ...the horizontal bar at the bottom of the screen As you move the marker across the frequency range with the left or right arrow key the numeric frequency and level value is displayed below the graph Us...

Страница 300: ...To set the telemetry frequency between 50 MHz and 1000 MHz use the alphanumeric keypad 9 Press ENTER Figure 237 Measure Mode Field View Figure 238 Measure Mode Field View Telemetry NOTE You must set t...

Страница 301: ...ight the broadcast node you wish to view NOTE The RSG is not operational if Telemetry Frequency is set below 200 MHz NOTE If the node you want to view is not being broadcast contact the PathTrak or Ph...

Страница 302: ...Help User Guide Rev 001 18 Press the Select softkey 19 Press the Info softkey 20 Press the OK softkey Figure 239 Measure Mode Broadcast Nodes Figure 240 Measure Mode Node Info 21128026 R001 DSAM Help...

Страница 303: ...nd 55 MHz Annex B or 5 and 65 MHz Annex A and Annex C use the arrow keys to highlight the Enter Desired Frequency field and press ENTER Using the arrow keys step the frequency up or down or use the al...

Страница 304: ...m path return path as captured at a node return at the headend or hub It identifies the frequency at which ingress occurs and displays the level value The Field View measurement mode graph continuousl...

Страница 305: ...emetry level Marker Information Area The Downstream Spectrum measurement mode also contains an area referred to as the Marker Information Area area below the graph This area consists of the marker nam...

Страница 306: ...201 frequency points The total ingress resis tance frequency range extends from 88 MHz to 108 MHz Initial measurements typically occur at the ground block with the home disconnected from the network P...

Страница 307: ...ncrements 6 Use the up and down arrows to adjust the graph for best viewing of the signal level measurements Figure 244 Spectrum Ingress Resistance Figure 245 Spectrum Ingress Resistance NOTE With eac...

Страница 308: ...changes only if new levels exceed the levels of the current trace A gray trace shows you the current data when Peak Hold is on If Peak Hold is turned on it ensures that the highest amplitude at each f...

Страница 309: ...ment results in the best reference setting on the graph 5 dB div or 10 dB div Enables you to adjust the vertical resolution of the graph for the best viewing Peak Hold Turns Peak Hold on and off When...

Страница 310: ...Chapter 10 Measure Mode Spectrum Tab Ingress Resistance 270 DSAM Help User Guide Rev 001 21128026 R001 DSAM Help User Guide book Page 270 Thursday February 5 2009 2 02 PM...

Страница 311: ...Mode Sweep tab functionality Topics discussed in this chapter are as follows Sweep Measurement Modes on page 272 Forward Sweep on page 273 Reverse Sweep on page 279 Sweepless Sweep on page 285 Reverse...

Страница 312: ...rence carriers This exclusive Stealth Sweep technology is patented by JDSU and minimizes any possibility of service interference Both directions of the network can be swept A forward sweep is performe...

Страница 313: ...measure carrier levels and when necessary to inject short sweep pulses When stable carriers are present they can be referenced to create a sweep response without injecting any sweep pulses This minim...

Страница 314: ...local measurements on DSAM Forward Sweep is accomplished with a transceiver and measurement system in the headend or hub site such as the SDA 5500 Stealth Sweep Transceiver It transmits and measures...

Страница 315: ...on page 55 7 Using the arrow keys and the alphanumeric keypad highlight and edit the parameters as needed 8 Press the OK softkey Understanding Forward Sweep Results The Forward Sweep measurement mode...

Страница 316: ...op frequencies as provided by the sweep plan transmitted from the headend transceiver and the sweep telemetry level The sweep telemetry level can be converted to dBmV dBm etc from the configuration se...

Страница 317: ...softkey 2 Using the arrow keys select one of the following Auto Reference Shift 9 Enables you to automatically view measurement results in the best reference setting on the graph 1 dB div 2 dB div 5 d...

Страница 318: ...is not compatible with the current received sweep plan a message is displayed This feature enables you to view the difference between the live data and the data stored in the file When you select a r...

Страница 319: ...ates return path frequency response by comparing the results to the local measurement of the same carriers With Reverse Sweep DSAM performs both as an active transceiver and as an analysis receiver Ac...

Страница 320: ...ork Sweeping the reverse path the amplifier is aligned so the response at the headend is within certain limits set by engineering The amplifier is aligned to compensate for loss characteristics in the...

Страница 321: ...ttings screen Sweep Settings on page 55 7 Using the arrow keys and the alphanumeric keypad highlight and edit the parameters as needed 8 Press the OK softkey Understanding Reverse Sweep Results The Re...

Страница 322: ...This area consists of the start and stop frequencies as provided by the sweep plan transmitted from the headend transceiver and the sweep telemetry level The sweep telemetry level can be converted to...

Страница 323: ...ftkey 2 Using the arrow keys select one of the following Auto Reference Shift 9 to automatically view measurement results in the best reference setting on the graph 1 dB div 2 dB div 5 dB div or 10 dB...

Страница 324: ...he subtitle bar in place of REF NONE NOTE Since a reference file is essentially an average of the data obtained from four sequential traces at least four sequential traces must occur before you can sa...

Страница 325: ...weep Sweepless Sweep additional purchase may be required enables you to retrieve sweep information without a transmitter Carrier levels derived from the channel plan are measured and recorded to compa...

Страница 326: ...hides audio points Test Point Comp Displays the Test Point Compensation screen Test Point Compensation on page 71 Sweep Tilt and Limit Displays the Sweep Settings screen Sweep Settings on page 55 7 U...

Страница 327: ...een to indicate the limit boundaries based on the limit value entered These appear only when sweep limit value is ON within Sweep Settings An error message automatically is displayed if the sweep tele...

Страница 328: ...ew softkey 2 Using the arrow keys select one of the following Auto Reference Shift 9 to automatically view measurement results in the best reference setting on the graph 1 dB div 2 dB div 5 dB div or...

Страница 329: ...the subtitle bar in place of REF NONE NOTE Since a reference file is essentially an average of the data obtained from four sequential traces at least four sequential traces must occur before you can s...

Страница 330: ...lignment Using constant inputs Reverse Alignment mode enables you to correctly align the amplifiers to maintain unity gain This mode also minimizes noise and ingress so the digital signals are not cli...

Страница 331: ...Configuring Telemetry Frequency on page 86 Sweep Settings Displays the Sweep Settings screen Sweep Settings on page 55 7 Using the arrow keys and the alphanumeric keypad highlight and edit the parame...

Страница 332: ...start and stop frequen cies are updated to match the zoom view Marker Status Area The Marker Status area displays the marker frequency in MHz the meter generated signal level and the headend measured...

Страница 333: ...select one of the following options Save File Saves the current measurement as a static measurement file Open File Enables you to select and open a saved reverse alignment measurement file 3 Press EN...

Страница 334: ...Chapter 11 Measure Mode Sweep Tab Reverse Alignment 294 DSAM Help User Guide Rev 001 21128026 R001 DSAM Help User Guide book Page 294 Thursday February 5 2009 2 02 PM...

Страница 335: ...roduct Family Series specifica tions Topics discussed in this appendix are as follows DSAM Product Family Series 1500 2500 2600 3500 3600 6000 Specifications on page 296 Power Component Specifications...

Страница 336: ...kHz Digital 50 kHz Channel Bandwidth Models ending in A 8 MHz Models ending in B 6 MHz Analog Level Measurement Signal Types CW video and audio NTSC PAL and SECAM Rangea 40 to 60 dBmV typical Resolut...

Страница 337: ...Models ending in A 5 to 65 MHz 65 96 MHz min downstream DOCSIS center freq 100 MHz Models ending in B 5 to 42 MHz 42 88 MHz min downstream DOCSIS center freq 91 MHz Upstream Modulation QPSK 16 QAM and...

Страница 338: ...Accuracy 0 6 Symbol Rate Annex A 5 057 to 6 952 MSPS for 64 128 and 256 QAM Annex B 5 057 MSPS for 64 QAM and 5 361 MSPS for 256 QAM Annex C 5 274 MSPS for 64 QAM and 5 361 MSPS for 256 QAM Interfaces...

Страница 339: ...lp System English in all models No charge sec ond language option of Chinese French German Hungarian Japa nese Korean Polish or Spanish Dimensions Models 1500 2500 and 3500 12 cm W 25 cm H 7 cm D 4 75...

Страница 340: ...lation type 64 128 and 256 QAM Constellation points 2000 4000 8000 16000 32000 or 64000 Zoom up to 4 levels Cable Modem Diagnostic Page IP addressg 192 168 100 1 Return QAM Generator Signal Modulation...

Страница 341: ...e 5 55MHz US 5 65 MHz EURO Transmit Level 8 58 dBmV a Total integrated power detectable range b Accuracy for analog levels between 20 to 55 dBmV Accuracy for digital levels between 20 to 50 dBmV Addit...

Страница 342: ...e 0 C 5 C 32 F Humidity range 0 to 95 RH non condensing Output Li Ion Battery Battery life 5 Hours typical standard capacity 8 Hours typical high capacity actual life may vary with usage Fast charge r...

Страница 343: ...nstructions This appendix describes battery safety instructions for your DSAM The topics discussed in this appendix are as follows Important Safety Instructions on page 304 21128026 R001 DSAM Help Use...

Страница 344: ...se the meter and its power components only as directed by the instructions in this guide or as directed by other resources provided by JDS Uniphase Corporation 2 When powering the meter maintain the s...

Страница 345: ...e the battery 3 Do not place the battery on a conductive surface 4 Do not allow metal objects to touch the battery contacts 5 Charge the battery only with the specified charger 6 Keep the battery away...

Страница 346: ...asurements with this meter 3 Do not damage the power cords 4 Avoid using the meter or its power components during an elec trical storm 5 Follow all basic safety practices associated with the use of el...

Страница 347: ...tomer services available through JDS Uniphase Corporation Topics discussed in this chapter include the following About Our Services on page 308 Customer Care on page 308 Global Services and Solutions...

Страница 348: ...t Customer Care Customer Care is accompanied with the sale of every JDS Uniphase Corporation product Customer Care services include Needs Analysis on Products and Services Comprehensive Product and Se...

Страница 349: ...e thoroughly tested ensuring peak performance of the complete feature set Additional repair calibration and upgrade services are available for purchase through Global Services and Solutions Product Su...

Страница 350: ...warranty period for this product can be obtained by contacting your local JDS Uniphase Corporation Customer Service Representative or at our web site www jdsu com If installation services have been or...

Страница 351: ...iphase Corporation does not warrant that the Soft ware will operate uninterrupted or error free operate in the combina tion with other software meet Customer s requirements or that its use will be uni...

Страница 352: ...S OR IMPLIED ON ANY HARD WARE SOFTWARE DOCUMENTATION OR SERVICES INCLUDING BUT NOT LIMITED TO WARRANTIES RELATING TO QUALITY PERFORMANCE NONINFRINGEMENT MERCHANT ABILITY OR FITNESS FOR A PARTICULAR PU...

Страница 353: ...h odologies to facilitate the integration of systems products into customers environments Basic Service for Systems encompasses system deployment training software upgrades technical assistance and re...

Страница 354: ...prehensive instructor and participant materials to ensure consis tent content delivery for the length of the agreement A critical part of Courseware Licensing is the Train the Trainer program which pr...

Страница 355: ...d to meet specific client needs Our consulting staff will work as part of your team providing a valuable blend of subject matter profi ciency an in depth test and measurement systems perspective and t...

Страница 356: ...zed software applications to developing drivers to auto mated manufacturing tests On Site Test and Measurement Service JDS Uniphase Corporation On site Test and Measurement Service provides testing ex...

Страница 357: ...illiwatt dBmV Decibels referenced to one millivolt dBRL Decibels of return loss dB V Decibels referenced to one microvolt Delta V A Delta Video to Audio Calculated by subtracting the first if DUAL aud...

Страница 358: ...ined requirements The benefit of head room is that it reduces the bit error rate BER and provides a perfor mance safety net to help ensure that current and future high speed appli cations run at peak...

Страница 359: ...col SNR Signal to Noise Ratio T TCP IP Transmission Control Protocol Internet Protocol TFTP Trivial File Transfer Protocol TOD Time of Day TTL Time to Live U UI User interface Layout of commands in a...

Страница 360: ...Glossary 320 DSAM Help User Guide Rev 001 21128026 R001 DSAM Help User Guide book Page 320 Thursday February 5 2009 2 02 PM...

Страница 361: ...21128026 R001 DSAM Help User Guide book Page 321 Thursday February 5 2009 2 02 PM...

Страница 362: ...40 404 2195 Latin America Tel 55 11 5503 3800 Fax 55 11 5505 1598 Asia Pacific Tel 852 2892 0990 Fax 852 2892 0770 EMEA Tel 49 7121 86 2222 Fax 49 7121 86 1222 www jdsu com Doc 21128027 001 Rev 001 Fe...

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