Home

PROMAX-27 Manual

1. Approximately 3 hours Power off after approximately 10 minutes of non use By fast internal charger 22 W Al 103 100 to 240 V AC 50 60 Hz 12 V DC EUROPE and other countries This equipment could be used on the following environmental conditions on these conditions the specifications could be also applied Altitude Temperature range Maximum relative humidity 07 2008 Up to 2000 metres From 5 C to 40 C 80 up to 31 C decreasing lineally up to 50 at 40 C Page 5 ZXPROMAX USER S MANUAL PROMAX 27 MECHANICAL FEATURES Dimensions 160 W x 230 Hx 50 Dmm Weight 1 4 kg including battery and protective bag INCLUDED ACCESSORIES AL 103 DC external adapter AA 12 Car lighter adapter cable AD 057 F female F female input adapter AD 058 F male F female rapid adapter CC 030 F male F male 1m coaxial cable 0 FD0462 Protective bag CA 005 Mains cord OPTIONAL ACCESSORIES AD 055 F female BNC female adapter AD 056 F female IEC female adapter Cl 023 Portable serial printer CC 209 Data transfer cable to PC or printer RM 027 Remote control software for PROMAX 27 AT 20C 20 dB attenuator RECOMMENDATIONS ABOUT THE PACKING It is recommended to keep all the packing material in order to return the equipment if necessary to the Technical Service Page 6 07 2008 2 SAFETY RULES N 2 1 Generals The safety could not be assured if the instructions for use are not closel
2. ANALOG F1 Changes among the three TV measurement modes IQ F2 It shows a Constellation Diagram for the digital signal in the whole range of measurement refer to section 4 2 5 1 1 for details see appendix B Principle of QAM Modulation The Constellation Diagram SPECTRUM SCAN FS Itleads to SPECTRUM mode refer to section 4 2 5 4 2 SCAN mode refer to section 4 2 5 4 1 LOGGER F4 Through this function you can store measurements in the memory of the instrument for later viewing printing or transfer to a PC refer to section 4 2 5 4 3 Page 44 07 2008 users manua emomax LARS PROIMIAXY CHAN BW FREQ F5 Pressing this key you can navigate among editable parameters To change them use the Cursor keys or the alphanumeric keypad as appropriate FREQ for changing the frequency value of the tuned channel BW for changing the bandwidth and CHANNEL for changing the channel of the channel plan If channel you are analysing is defined as analogue it will appear a warning message on the screen The message will be Warning CXX is defined as ANALOGUE NOTE Access to the function SCAN SPECTRUM switches depending on the type of tuning you are doing In case you are tuning a signal using frequency it will be displayed the SPECTRUM function first In case you are tuning a signal using the predefined channels from the channel plan it will be displayed the SCAN function first 4 2 5 1 1 CONSTELLAT
3. F1 until you see at the top of the screen SIGNAL LEVEL METER see Figure 27 SIGHAL LEVEL METER CH C31 CCIR AAA AAA EE 28 36 46 56 680 76 S8 98 188 118 120 Figure 27 SIGNAL LEVEL METER screen The SLM mode Signal Level Meter provides the power level of the tuned channel in a numerical way and in a graph bar with a resolution of one dB By the loudspeaker it will emit a pitch tone which changes relating to the level In this mode measures on the screen are next LVL Power signal level FR Channel tuned frequency CH Channel and plan channel At the bottom of the screen you will see next options DIGITAL F1 It leads to the Digital TV Power Meter TONE AM FM OFF F2 Pressing this key you can navigate among these four options These options are for change the sound heard by the speaker of the instrument With TONE you will heard a tone which changes depending on the signal FM to listen to Frequency Modulation radio signal AM to listen to Amplitude Modulation radio OFF to mute speaker SPECTRUM SCAN F3 It goes to SPECTRUM function refer to section 4 2 5 4 2 SCAN function refer to section 4 2 5 4 1 Page 50 07 2008 LOGGER F4 Through this function you can store measurements in the memory of the instrument for later viewing printing or transfer to a PC refer to section 4 2 5 4 3 FREQ VOLUME CHAN F5 Pressing this key you can navigate among editable parameter
4. 4 After you have made your changes press again the selection key 8 to save changes 07 2008 Page 17 AxPROMAX USER S MANUAL PROMAX 27 5 To exit Configuration Mode and return to the main menu press again the MENU key 13 Modifiable parameters are next a b c d e f 9 h Page 18 CHANNEL PLAN It allows you to select the channel plan among the ten ones stored by default in the instrument CCIR ElA HRC IRC OIRL UK AUNAD ST2L AUST ONO EDIT CHANNEL PLAN With this option you can edit the active channel plan Through this option you may get into the option EDIT for details refer to section 4 2 2 1 POWER AT CMTS It defines the minimum level of signal that should receive the CMTS It accepts values between 20 and 120 dBuV It is editable by curso or alphanumeric keypad UNITS It allows you to select measurement units to be used among dBmV dBuV and dBm MAC ADDRESS SELECTION It validates the MAC code Media Access Control address which will be used to identify you computer This is a direction that identifies the instrument in a unique way There are two options PREDEFINED that uses the MAC address defined by default and appears in the field MAC ADDRESS or MANUAL that allows you to modify the MAC address defining the address we want MAC ADDRESS It allows you to enter the MAC code that will be used to identify the equipment THRESHOLD It defines the minimum leve
5. impairments such as system noise and the second and third order beats CSO and CTB This measurement takes in account not only amplitude noise but also phase noise To determine the MER of a signal is a key part of determining the margin from failure of the digital system Unlike analogue systems where you can see degradations in Carrier Noise C N performance a poor MER is not noticeable on the picture right up to the point of system failure MER is defined as follows expressed in dB RMS error magnitude 20 log 7 dB average symbol magnitude RMS Error Magnitude Ideal Symbol Average Symbol Magnitude Figure 33 Modulation error ratio MER 07 2008 Page 61 ZXPROMAX USER S MANUAL PROMAX 27 64 QAM set decoders require better than 23 dB MER to operate To allow for system degradation a margin of at least 3 or 4 dB is preferred However QAM 256 set decoders require better than 28 dB MER to operate with margins of 3 dB at least Typically the maximum MER displayed on portable analysers is about 34 dB MER was chosen as the preferred measurement for cable TV because of it s similar to the analogue Carrier Noise C N measurement expressed in dB that most people from cable industry are familiar with Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 Page 62 FAX 781 665 0780 TestEquipmentDepot com 07 2008 users manua emomax LARS PROIMIAXY APPENDIX B PRINCIPLE OF QAM MOD
6. in data transport The PROMAX 27 allows the user to establish a service flow to verify the quality of service based on type rtPS Flow services are used to verify the network between the test point and the CMTS It analyses parameters than can affect quality signal like latency jitter lost packets and trace route which trace the route of sent packets on a graph This will be useful to detect possible bottlenecks In short the IPTV function of the PROMAX 27 performs an exhaustive analysis of the network based on parameters set by rtPS which will ensure the best quality service The deep knowledge about network conditions will guide you during installation and will help you solving problems that may arise To access to IPTV function MENU 1 Press key ven 13 2 Press softkey MODEM F1 3 Press softkey IP NETWORK F1 4 The instrument starts the registration process in the CMTS of the NETWORK On the display it will appear the word TUNING during the process You must wait a few minutes until it is registered If registration process is right it will display the word DONE on the screen Failure in registration process will be displayed as a ERROR IN REGISTRATION 5 Press softkey IPTV F3 IPTU QoS ANALYSER B1 43 69 IP RDDRESS NODE 1 15 IP 018 001 001 885 LATENCY 5 8 ms JITTER 2 8 ms PLR Dx TOTAL PLR GES IP UNREACHABLE Figure 20 IPTV screen Page 38 07 2008 users manua em
7. of the front panel and particularly the viewfinders alcohol or its derivatives these products can attack the mechanical properties of the materials and diminish their useful time of life 07 2008 Page 59 AxPROMAX USER S MANUAL PROMAX 27 5 3 Components which user can not replace 5 3 1 Not replaceable fuses by user To be replaced by qualified personnel Its position identifier and characteristics are F001 y F002 FUS 7A T125V Page 60 07 2008 users manua emomar LARS PROIMIAXY APPENDIXES APPENDIX A MEASUREMENT OF THE MODULATION ERROR RATIO MER Analogue and digital carriers are very different in terms of the signal content and the power distribution over the channel Therefore need to be measured differently The amount of distortion in a system is related to the total power of all of the carriers making accurate power measurements critical for optimum performance Instruments such as signal level meters that are designed to measure only analogue carriers will not accurately measure digital carriers Modulation error ratio MER used in digital systems is analogous to Signal Noise S N measurement used in analogue systems MER represents the ratio of the error power to the average power in an ideal QAM signal Ideally you should have at least 4 or 5 dB of margin from the MER where significant errors occur to allow for system degradation MER measurements are useful for early detection of non transient noise
8. out from a computer the following options 1 CHANNELS PLAN PROCESSOR Modify add or delete channel plans 2 DATALOGGER Permits to edit and to save all the measurement contained in a logger 3 UPGRADE Allows updating the PROMAX 27 software version Page 58 07 2008 5 MAINTENANCE A This part of the manual describes the maintenance procedures and the location of faults 5 1 Instructions for returning by mail Instruments returned for repair or calibration either within or outwit the guarantee period should be forwarded with the following information Name of the Company name of the contact person address telephone number receipt in the case of coverage under guarantee and a description of the problem or the service required 5 2 Method of maintenance The method of maintenance to be carried out by the user consists of cleaning the cover and changing the battery All other operations should be carried out by authorised agents or by personnel qualified in the servicing of instruments 5 2 1 Cleaning the cover CAUTION Do not use scented hydrocarbons or chlorized solvents Such products may attack the plastics used in the construction of the cover The cover should be cleaned by means of a light solution of detergent and water applied with a soft cloth Dry thoroughly before using the system again CAUTION To clean the contacts use a dry cloth Do not use a wet or damp cloth CAUTION Do not use for the cleaning
9. 47 S14 7254 58 MOD GAM 4 SR 2568 ksum s UCI 172737475 ONLY DIGITAL CH Figure 11 SEARCH function Measurements shown on the screen Figure 11 are PWR Input power MER Imodulation Error Ratio MOD Modulation used to codify the signal SR Symbol rate UCI Upstream Channel Identification SYSTEM It is the system used to send the signal At the bottom of the screen are shown the following options SPECTRUM F1 Returns to SPECTRUM screen refer to section 4 2 3 4 MODEM F3 Returns to the MODEM screen refer to section 4 2 3 SCAN F4 Returns to the SCAN screen refer to section 4 2 3 3 START F5 Starts searching for channels NOTE Access to the function SCAN SPECTRUM switches depending on the type of tuning you are doing In case you are tuning a signal using frequency it will be displayed the SPECTRUM function first In case you are tuning a signal using the predefined channels from the channel plan it will be displayed the SCAN function first Page 26 07 2008 Leem mere o APRAX 4 2 3 3 SCAN function To access the SCAN function 1 Press key ew 13 2 Press softkey MODEM F1 3 Press softkey SPECTRUM SCAN F3 4 Press softkey SCAN F4 if coming from SPECTRUM screen The SCAN function shows numerically the level of the channel where the cursor which is at the top of the screen is pointing Figure 12 MODEM CHANNELS SCAN FR 128 58 Hi
10. 5 VIEW F3 It allows you to access the data stored in the selected logger Figure 30 Pressing F1 or F5 you will return to the previous screen LOGGER Pressing F4 displayed logger data will be print TU LOGGER B1 43 69 LUL PUR C N MER BER 294B Les 1 BE 8 Figure 30 TV logger PRINT F4 It prints the selected log Figure 31 refer to section 4 3 KOK OK ROK ROK ck ckck ck k ckck ck ck ck k ck k ck OK RK PROMAX 27 Ckckckckckckckck RARA ck ck ckck ck k ck k ck k ck ck Ak AA 00 01 38 01 01 2006 KKK KKK KKK KKK KK KK ck ck ck ck KK ck ck ck ck kk TV LOGGER KK KKK KK KK ck ck ckck ck ck ckck ck ck KK KKK KKK CH LVL PWR A V C N MER BER C02 35dBuV 22dB 29dB C03 28dBuV 30dB 1 0E 8 C01 29dBuV 25dB 31dB C05 34dBuV 15dB 22dB C06 41dBuV 25dB 29dB C95 33dBuV 34dB 1 0E 8 07 2008 Page 55 ZXPROMAX USER S MANUAL PROMAX 27 27dBuV 19dBuV 24dBuV 26dBuV 28dBuV 24dBuV 24dBuV 27dBuV 27dBuV 24dBuV 27dBuV 27dBuV 37dBuV 24dBuV 24dBuV 37dBuV 37dBuV 37dBuV 37dBuV Figure 31 Print Example BACK F5 It returns to the previous screen TV LOGGER 4 2 5 4 4 TILT function To access the TILT function 1 Press key _ 13 2 Press softkey TV F2 3 Press softkey SPECTRUM SCAN F3 4 Press softkey SCAN F3 if coming from SPECTRUM screen 5 Press softkey TILT F4 This function is the same one than the TILT function in MODEM m
11. 5 C It is advisable in these cases doing every 3 months a cycle of charging discharging and a subsequent half charge i e 50 3 2 Installation and putting in operation The PROMAX 27 has been designed for using as portable equipment A fully charged battery can power the instrument for over three hours When displaying the low battery indicator on the screen b the battery must be recharged When starting up with a very low level battery may be the PROMAX 27 could start up because of residual energy remaining at the battery but the equipment will be disconnected automatically BEFORE displaying on the screen the low level battery indicator 3 2 4 Adjusting contrast LCD Adjustment contrast is done via the dial see Figure 2 5 located at the right side panel of the instrument By turning the dial is possible to adjust the screen contrast to get the best display in any environmental condition By turning counter clockwise the contrast decreases By turning clockwise it increases The new value of contrast is kept when the instrument turns off Page 10 07 2008 users manua emomax LARS PROIMIAX 4 OPERATING INSTRUCTIONS 4 1 Description of the controls and elements Front panel 1 2 3 4 12 2 13 6 7 14 8 15 9 10 11 16 Figure 2 Front panel view 1 F F or F BNC or F IEC adapter A Maximum input voltage level 60 VAC rms 50 60 Hz 2 F male base connector 3 Graphic display with back lig
12. ANNEL PLAN CCIR CHANNEL 2 EE CA 50 59 MHz 8 88 MHz 4 Gd ES 64 2968 ksum s ITU J 83 A Figure 8 CHANNEL EDIT menu Next we explain with details the menu of the CHANNEL EDIT Depending on whether is an analogue or digital channel the parameters will be different Following is described everyone CHANNEL PLAN CHANNEL FREQUENCY BW OFFSET only for analogue channels Page 20 Name of the channel plan where is the active channel No editable Name of the channel It allows you to navigate among existing channels Is the frequency related to the channel Not editable Bandwidth Not editable lt may vary between 2 5 and 2 5 MHz 07 2008 USER S MANUAL PROMAX 27 SYSTEM only for analogue channels MODULATION only for digital channels SYMBOL RATE only for digital channels SYSTEM only for digital channels AxXPROMAX System type and communication standard lt can be selected among systems PAL SECAM NTSC and standards B G D K L I M N AUDIO FREQUENCY only for analogue channels The frequency that the audio signal is transmitted No editable You can select among QPSK QAM16 QAM32 QAM64 QAM128 QAM256 modulation This value may be between 1000 and 7000 sym s Depending on the modulation used you should choose the proper annex among following ones ITU J 83 A ITU 4 83 B ITU J 83 C In order to modify the rest of features of the channel plan you wi
13. AX 27 Modifiable parameters are next HOUR It indicates the current time Enter hour and minutes by alphanumeric keypad To enter the symbol between hours and minutes you should use the key E SR which is in the alphanumeric keypad DATE It indicates the current date in European notation dd mm yy Enter the day month and year by the alphanumeric keypad To enter the hyphen symbol between numbers press key that is in the alphanumeric keypad LANGUAGE The language selected is the language usually used on the menus Use the cursor keys to scroll through available languages English Spanish German and Portuguese BIP This parameter enables ON or disables OFF the acoustic indicator that beeps when you press any key AUTO POWER OFF This setting allows you to active ON or to disable OFF the auto power off function With this feature active the instrument will automatically disconnect after ten minutes without pressing any key IP NETWORK It is the number used to identify the instrument within the network You should use the alphanumeric keypad to enter numbers that compose the IP address You should use the key ES to write a point between numbers NETMASK It is the number used to define the netmask You should use the alphanumeric keypad to enter numbers that compose the netmask address You should use the key EP to write a point between numbers GATEWAY It is the number used to define the gateway
14. EC ADDRESS F5 Pressing this key you can navigate among editable parameters To change them use the Cursor keys or the alphanumeric keypad as appropriate You can change the PING ADDRESS or the CODEC When selecting IP address if you use the cursor keys you will access to last IP entered by the user 4 2 4 2 IPTV Description of Service IPTV Internet Protocol Television is a system where a digital TV service is distributed on a network infrastructure using the IP protocol The protocol DOCSIS EuroDOCSIS uses the concept of service flows for traffic transmitted between cable modem and CMTS A service flow is a one way packets flow that provide a specific service quality Traffic is classified in a service flow and each service flow has its own set of parameters named QoS QoS Quality of Service are technologies that ensure the transfer of certain amount of data at a time ensuring a good quality of service 07 2008 Page 37 ZI PROMAX USER S MANUAL PROMAX 27 In the case of IPTV the type rtPS Real Time Polling Service is the most suitable rtPS is one of the four QoS defined in DOCSIS EuroDOCSIS and is designed to support service flows with real time traffic that generates variable size data packets on a periodic basis and has inflexible latency and throughput requirements as in the case of video MPEG This service requires more demand to CMTS than the UGS type but supports variable grant sizes for an optimum efficiency
15. F bandwidth Input impedance Accuracy Analogue channels Digital channels AXPROMAX lt t 5 kHz 60 to 112 dBuV selectable in 1 dB steps 1 dB t3dB QPSK 8QAM 16QAM 32QAM 64QAM from 160 to 5120 ksym s From 70 to 120 dBuV From 10 dBmV to 60 dBmvV From 5 to 1000 MHz 1 dB 3 dB From 5 to 40 C Video carrier signal level measurement Power measurement in the channel bandwidth by integration method From 25 to 120 dBuV From 35 dBmV to 60 dBmV 120 dBuV 60 dBmV 60 V DC or RMS Digital in dBuV dBmV or dBm and analogue through a graphic bar 1 dB resolution 230 kHz 50kHz 750 t 2 dB from 5 to 40 C for negative video modulation 3 dB from 5 to 40 C for 8 MHz bandwidth channels DIGITAL SIGNALS MEASUREMENT MER Modulation error ratio Measurement range Accuracy BER Bit error rate 22 dB to 42 dB for QAM 64 256 2dB Measured before RS decoding Measurement range 10 E 2 to 10 E 10 Because of safety reasons the maximum input power over the entire band is limited up to 120 dBuV The equivalent power level for a group of channels of similar levels is related with the input power level over the entire band according to the following expression Lr 7 L 10 log N Lr total level L mean level of one channel N number of channels present For higher input power levels the use of an external attenuator of 20 dB is recommended For the positive video mod
16. F1 3 Press softkey IP NETWORK F1 4 The instrument starts the registration process in the CMTS of the NETWORK On the display it will appear the word TUNING during the process You must wait a few minutes until it is registered If registration process is right it will display the word DONE on the screen Failure in registration process will be displayed as an ERROR IN REGISTRATION 5 Press softkey TRACE F5 DOCSIS EuroDOCSIS ANALYSER G1 43 69 11 209 85 248 216 148ms 12 72 14 236 200 128ms 213 27 253 85 13 64 233 161 099 158ms 212 74 69 177 212 74 65 58 6 72 14 198 133 209 85 249 178 209 85 248 44 66 249 94 251 9 209 85 248 188 Figure 22 TRACEROUTE Screen Each line on the screen Figure 22 shows each system or router in the path between the instrument and the target system Each line shows the system s IP address and time in millisecond that is how long it took a packet to get from the instrument to that system and back again If the device is not properly registered in the network at the bottom of the screen it will display the warning message Register Error At the bottom of the screen appears following options BACK F1 Return to the previous screen REGISTER Page 42 07 2008 SEND F2 Sends the PING 4 2 5 TV Mode To access the TV mode for CATV measurement Ga MENU 1 Press key We 13 2 Press softkey TV F2 The TV function incl
17. IGITAL mode Ss 4 2 5 1 1 CONSTELLATION DIAGRAM function esses 45 CR Beie Die 47 4 2 5 2 1 AUDIO function 2 48 4 2 5 3 SLM mode cocccccccccconoconcnononcnonnnonacnnononos 50 4 2 5 4 COMMON FUNCTIONS in TV mode 51 4 2 5 4 1 SCAN function 51 4 2 5 4 2 SPECTRUM function ais D2 4 2 5 4 3 LOGGER function 11099 4 2 5 4 4 TILT function 56 4 2 6 TEST SIGNAL GENERATOR mode 2 57 4 3 CONNECTING TO DEVICES cccccoccccnnoncncnoccnnnonnnncnonnnnnonnncnnnnnnnnonnncnancnnnnnnnnos 58 5 MAINTENANCE 5 1 Instructions for returning by mail ZXPROMAX USER S MANUAL PROMAX 27 5 2 Method of maintenance nente tnit inei senta sereni nae 59 5 21 Cleaning the COVOr inerenti tani a keen tena E EEEE 59 5 3 Components which user can not replace sseseseseeieeeieieeieirrisierienrrerrerernes 60 5 3 1 Not replaceable fuses by user AA 60 APPENDIXES se coincide 61 APPENDIX A MEASUREMENT OF THE MODULATION ERROR RATIO MER 61 APPENDIX B PRINCIPLE OF QAM MODULATION THE CONSTELLATION DIAGRAM EE 63 APPENDIX C FREQUENCY OFFSET ADJUSTMENT FOR TUNING ANALOGUE AND DIGITAL CHANNELS tette tarnen eta tua tbct att atria ida i 65 TV CABLE DATA ANALYSER PROMAX 27 1 GENERAL 1 1 Description The PROMAX 27 is a portable analyser for the configuration installation and maintenance of interactive video services and high spee
18. ION DIAGRAM function To access the IQ function CONSTELLATION DIAGRAM 1 Press key 13 2 Press key TV F2 3 Goto DIGITAL TV POWER METER mode pressing key F1 4 Press key IQ F2 It be displayed the Constellation Diagram Figure 24 DIGITAL TU 6d 43 69 Sox SOT PreBER 4 1 BE 8 PostBER 3 BE 6 554 en nHz pHEENUEI dS CEIR anMe 4 2568 kssm s ITU J 834A RLL Unlocked Figure 24 Constellation diagram and measurements of a digital channel 07 2008 Page 45 ZXPROMAX USER S MANUAL PROMAX 27 Measures displayed on this screen are next PWR Power input level MER Modulation Error Ratio PreBER Measurement before correction PostBER Measurement after correction Locked Unlocked It shows whether the signal is locked or not At the bottom of the screen you will see next options ANALOG F 1 It leads to TV Analog mode DIGITAL F2 It leads to previous screen TV digital mode SPECTRUM SCAN F3 It goes to SPECTRUM mode refer to section 4 2 5 4 2 SCAN mode refer to section 4 2 5 4 1 RESET F4 It does a reset of the signal and measures again BW CHAN MOD S R ANNEX QUADR FREQ F5 Pressing this key you can navigate among editable parameters To change them use the Cursor keys or the alphanumeric keypad as appropriate BW to change bandwidth CHANNEL to change channel from de plan channel MOD to define modulation QPSK QAM16 QA
19. M32 QAM32u QAM64 QAM 128 QAM256 S R to define symbol rate ANNEX to define the standard of application A B C QUADRANT to select the displayed quadrant Q1 Q2 Q3 Q4 ZQ1 ZQ2 ZQ3 ZQ4 ALL The ZQx option makes a zoom in over each quadrant Pressing the selection key 8 you can switch between viewing or hiding the constellation diagram FREQUENCY to change frequency If channel we are analysing is defined as analog it will appear a warning message on the screen The message will be Warning CXX is defined as ANALOGUE Page 46 07 2008 users manua promaxer LARS PROIMIAXY NOTE Access to the function SCAN SPECTRUM switches depending on the type of tuning you are doing In case you are tuning a signal using frequency it will be displayed the SPECTRUM function first In case you are tuning a signal using the predefined channels from the channel plan it will be displayed the SCAN function first 4 2 5 2 TV ANALOGUE mode To access this measurement mode from TV mode press the softkey F1 until you see at the top of the screen ANALOG TV VIDEO METER Figure 25 ANALOG TU VIDEO METER PERSE MHz CH C31 CCIR d s lies 28 ILLE Lii 20 38 op 958 68 rea sa 98 188 118 120 Figure 25 Analog TV Video Meter mode In the case you tuned an analogue carrier signal measurements on the screen will be next LVL Power received from the signal V A Video Audio Ratio C N Ca
20. MODEM F1 3 Press key LOGGER F4 Using the LOGGER function in MODEM mode you can obtain a record of the measurements taken for both Upstream and Downstream Data stored are next Downstream Power MER and BER Channel frequency Symbol rate Page 30 07 2008 Leem mere o APRAX Upstream Power checking Attenuation until CMTS Bandwidth and Frequency Symbol rate The PROMAX 27 can store in its memory up to 30 acquisitions or loggers in MODEM mode These measurements are stored for later viewing printing or transfer to a PC On the left side of the screen Figure 14 you can see the recording number followed by time and date it was saved and the name given The instrument automatically assigns a sequential name to the file or reuses a name of a removed file MODEM MEASURES B1 43 69 13 64 29 16 86 2068 LOGGERS 15 16 00 11 06 2068 LOGGERS1 11 45 00 11 86 2068 LOGGERSS Figure 14 List of stored loggers If there are not files stored it will be shown the message EMPTY LOGGER At the bottom of the screen you will see next options STORE F1 Measurements corresponding to channels of the channel plan selected are stored in a logger DEL F2 It deletes the logger that the cursor is pointing at System requires confirmation To confirm delete press F4 To cancel press F5 VIEW F3 It allows you to access the data stored in the selected logger Figure 15 07 2008 P
21. ODEM DATALOGGER FUNCTION Max number of loggers 50 TV 30 MODEM Number of channels logger 140 Measurements TV analogue channels Level C N and V A TV digital channels Power BER and MER Data digital channels Upstream and Downstream parameters Power level attenuation frequency bandwidth modulation symbol rate BER MER and constellation diagram 3 For the AM audio carrier L standard it can vary from 0 to 3 dB below the V A value Page 4 07 2008 USER S MANUAL PROMAX 27 SCAN Span Dynamic range SPECTRUM ANALYSER Span Reference level Analysed band Detector Bandwidth Resolution Peak detector Span 100 MHz Span 50 MHz Span 30 MHz Span 15 MHz Span 5 MHz Span 1 MHz Average detector Span 30 MHz Span 15 MHz Span 5 MHz Span 1 MHz AUDIO Demodulation Output POWER SUPPLY Li lon battery Low battery indication Autonomy Automatic power off Battery charge Equipment consumption Mains to charger adapter ENVIRONMENTAL CONDITIONS AxXPROMAX Variable 10 30 100 300 MHz and full band from 5 to 862 MHz depending on channel plan Variable from 20 to 120 dBuV in 10 dB steps From 1 to 100 MHz 1 5 15 30 50 100 MHz Variable from 20 to 120 dBuV in 10 dB steps From 5 to 862 MHz Peak or average 200 kHz 900 kHz 450 kHz 280 kHz 140 kHz 50 kHz 10 kHz 280 kHz 140 kHz 50 kHz 10 kHz AM FM Internal loudspeaker 7 4 V 4 8 Ah Graphic indication on the display
22. TIME It indicates the maximum time that a PING has been sent and received back AVG TIME It indicates the average time in which PINGs were sent and received back If the device is not properly registered in the network at the bottom of the screen it will display the warning message Register Error At the bottom of the screen appears following options BACK F1 Return to the previous screen REGISTER SEND F2 Sends the PING NUMBER LENGTH IP F5 Pressing this key you can navigate among editable parameters To change them use the Cursor keys or the alphanumeric keypad as appropriate It can be edited the PING number its LENGHT or its NUMBER When selecting IP address if you use the cursor keys you will access to last IPs entered by the user 4 2 4 4 TRACEROUTE Description of Service Traceroute is a service that shows you the route over the network between two systems listing all the intermediate routers a connection must pass through to get to its destination 07 2008 Page 41 AxPROMAX USER S MANUAL PROMAX 27 This function can help you determine why a connection to a given server might be poor and can offer help you figure out where exactly the problem is lt also shows you how systems are connected to each other letting you see how your ISP connects to the Internet as well as how the target system is connected To access the TRACEROUTE function 1 Press key 13 2 Press softkey MODEM
23. Test Equipment 99 Washington Street Depot Melrose MA 02176 Phone 781 665 1400 1 800 517 8431 Toll Free 1 800 517 8431 PROMAX 27 CABLE TV amp DATA ANALYSER AX PROMAxX 0 MI1546 NOTAS SOBRE SEGURIDAD Antes de manipular el equipo leer el manual de instrucciones y muy especialmente el apartado PRESCRIPCIONES DE SEGURIDAD El s mbolo AN sobre el equipo significa CONSULTAR EL MANUAL DE INSTRUCCIONES En este manual puede aparecer tambi n como simbolo de advertencia o precauci n Recuadros de ADVERTENCIAS Y PRECAUCIONES pueden aparecer a lo largo de este manual para evitar riesgos de accidentes a personas o da os al equipo u otras propiedades SAFETY NOTES Read the user s manual before using the equipment mainly SAFETY RULES paragraph The symbol A on the equipment means SEE USER S MANUAL In this manual may also appear as a Caution or Warning symbol Warning and Caution statements may appear in this manual to avoid injury hazard or damage to this product or other property REMARQUES A PROPOS DE LA SECURITE Avant de manipuler l appareil lire le manuel d utilisation et plus particuli rement le paragraphe PRESCRIPTIONS DE SECURITE Le symbole AN sur l appareil signifie CONSULTER LE MANUEL D UTILISATION Dans ce manuel il peut galement apparaitre comme symbole d avertissement ou de pr caution Des encadr s AVERTISSEMENTS ET PRECAUTIONS peuvent apparaitre dans ce manuel pour viter
24. ULATION THE CONSTELLATION DIAGRAM The modulation process implies to transfer the information contained in a signal to a high frequency carrier Modulation QAM in concrete uses modulation in quadrature consisting of two carriers each one of the same frequency one called I in phase and another out of phase 90 called Q quadrature Each one of them is modulated in amplitude and phase by a portion of the digital input signal The two modulated signals are combined then and they are transmitted as a single waveform The receiver only needs to invert the process for generating a digital output that can be processed to produce images or another useful information also The number of levels used in the modulation of each carrier determines the number of possible symbols and consequently the number of bits that can be transmitted in a certain bandwidth The DVB C standard allows 5 types of modulation 16 QAM 32 QAM 64 QAM 128 QAM and 256 QAM For example if four amplitude levels are applied to each one of the carriers each signal could reach the value of 3 0 1 0 1 0 3 0 at a given instant in time so we have 16 possible combinations This is known as 16 QAM Extending the previous exposition to four amplitudes it allows us to generate 8 states for each carrier and 64 possible combinations 64 QAM These digital signals can be visualized graphically by means of the Constellation Diagram If one imagines on an axis the possible state
25. X SPAN NOTE Access to the function SCAN SPECTRUM switches depending on the type of tuning you are doing In case you are tuning a signal using frequency it will be displayed the SPECTRUM function first In case you are tuning a signal using the predefined channels from the channel plan it will be displayed the SCAN function first 4 2 3 4 SPECTRUM function To access the SPECTRUM function 1 Press key Q 13 2 Press softkey MODEM F1 3 Press softkey SPECTRUM SCAN F3 4 Press softkey SPECTRUM F1 if coming from SPECTRUM screen The SPECTRUM function performs a spectrum graph at the highest resolution By this way interferences can be detected both in active channels and adjacent ones Figure 13 Page 28 07 2008 users um mere ED MODEM SPECTRUM ANALYSER B1 43 89 q Buu 86 25 FR EEE CH S64 CCIR MEASURING MAX Figure 13 SPECTRUM function in MODEM mode At the SPECTRUM function the meter represents the spectrum of frequencies where the marker is It provides an agile analysis of the whole band Data on the screen are PWR Power received from signal PWR It indicates the summation of power signals along the frequency band from 5 to 1000 MHz FR Channel frequency CH Selected channel and active plan channel MEASURING Itis the measurement it is using At the bottom of the screen you will see next options SLOW FAST F1 It can be changed the scann
26. You should use the alphanumeric keypad to enter numbers that compose the gateway address You should use the key EI to write a point between numbers Paragraphs f g and h are needed to configure the Ethernet network connection At the bottom of the screen it appears the following information no editable Page 16 07 2008 users um mere o APRAX BATTERY Indicates the battery charge in voltage FIRMWARE Indicates control program version SERIAL NUMBER Itis a unique identifier number for the instrument 4 2 2 CONFIG Mode To access the CONFIG mode for setting the general configuration of the system MENU 1 Press key ew 13 2 Press softkey CONFIG F4 It appears the screen with configuration parameters Figure 6 GENERAL CONFIGURATION Bi 43 a3 CHANNEL PLAN IRC GA PL DH 7 i LI ie eases So D er A ADDRESS A 40 36 16 CA 60 58 dBuU NOISE FREQUENCY FREGUENCY STEP Figure 6 CONFIG menu This menu allows you to set the parameters in order to the instrument can take the TV digital and analog measurements as well as the data analysis for upstream and downstream To change a parameter 1 Use the cursor keys 7 SH scroll through the menu SEL 2 Go to the parameter you want to modify and press the selection key S 8 3 The cursor will move next to the parameter value Now you can change that value using the cursor or the alphanumeric keypad depending on the case SEL
27. age 31 AxPROMAX LOGGER 61 Bi 43 09 UPSTREAM DOWNSTREAM DO 282 4275 S47 FR 27 85 MHz FR 254 50 His D 3 3 MHz CH S14 CCIR MOD DAM64 HOD GANGA USER S MANUAL PROMAX 27 SR 1288 ksum s SR 2568 ksum s PreBER 41 BE 8 Figure 15 Logger Viewing in MODEM mode Pressing F1 or F5 you will return to the previous screen LOGGER Pressing F4 displayed logger data will be print PRINT F4 BACK F5 Page 32 It prints the selected log Figure 16 refer to section 4 3 KKK KKK KKK KKK KEK AK KKK KKK e PROMAX 27 Ckckckckckckckckckckckck RARA RAR KARA 00 01 38 01 01 2006 KKK KKK KKK KKK KKK KKK KKK KKK UPSTREAM TORR OR RK RK PWR 91 dBuV ATT 21 dB FR 27 05 MHz BW 3 2 MHz SR 2560 ksym s KKK KKK KKK KKK KK ckck KK KKK KR DOWNSTREAM TORR OR AAA kk kk k k PWR 82 dBuV MER 32 dB FR 303 00 MHz CH C37 IRC SR 5057 ksym s BER lt 1 0E 8 Figure 16 Print example It returns to the previous screen MODEM 07 2008 users manua promaxer LAS PROIMIAXY 4 2 3 6 TILT function To access the TILT function 1 Press key 13 2 Press softkey MODEM F1 3 Press softkey SPECTRUM SCAN F3 4 Press softkey SCAN F3 if coming from SPECTRUM screen 5 Press softkey TILT F4 The TILT test is a utility to equalize the line Typically CATV networks transmit two pilot signals at the beginning and at the end of the band These two p
28. ate It can be edited the LEVEL to change the margin of the power on the vertical axis of the graph CHANNEL to change the channel we are analysing SPAN to change the frequency range shown on the horizontal axis of the graph Possible values are 10 30 100 300 MHz and MAX SPAN NOTE Access to the function SCAN SPECTRUM switches depending on the type of tuning you are doing In case you are tuning a signal using frequency it will be displayed the SPECTRUM function first In case you are tuning a signal using the predefined channels from the channel plan it will be displayed the SCAN function first 4 2 5 4 2 SPECTRUM function To access the SPECTRUM function GE MENU 1 Press key VEW 13 2 Press softkey TV F2 3 Press softkey F1 to select the mode you want to work DIGITAL ANALOG SLM 4 Press softkey SPECTRUM SCAN F3 5 Press softkey SPECTRUM F1 if coming from SCAN screen This function is the same one than the SPECTRUM function in MODEM mode For more details refer to section 4 2 3 4 At the bottom of the screen you will see next options SLOW FAST F1 lt can be changed the scanning speed AVG MAX PEAK F2 It can be changed the measurement mode The current mode appears below the selected channel In the AVERAGE option it makes an average of values in the MAX HOLD option it keeps the maximum values measured due to impulsive signals remaining on the screen with dotte
29. d data networks over TV coaxial networks based on DOCSIS 2 0 and EuroDOCSIS standard On the other hand can also analyse services based on IP protocol transmitted by these same networks such as Voice IP IPTV or the Internet The PROMAX 27 has all the functions necessary for an easy installation of any service offered by cable In addition its intuitive menu its adjusted weight and strength makes it ideal for fieldwork The instrument is powered by an internal rechargeable battery In the design of the PROMAX 27 it has dedicated particular attention on making a practical and precise instrument as easy to use A simple alphanumeric keypad that incorporates soft keys allowing direct access to different modes of operation and once there through the ambidextrous navigation and selection keys it s easy to modify any parameter of the measure All this makes the PROMAX 27 in a magnificent tool for installing and maintaining HFC Hybrid Fibber Cable CATV analog and digital systems Being also very useful for testing DOCSIS EuroDOCSIS data transmission systems In addition the instrument provides a serial output for connecting to a printer or computer and thus obtains reports of the taken measures or access the PROMAX server for updating Here are some of the most important functions the PROMAX 27 integrates The Power meter function across the frequency band is very useful in assessing the possible saturation of inputs of CATV amplifie
30. d lines PEAK option uses as reference the peak values Page 52 07 2008 DIGITAL ANALOG SLM F3 It leads to the first screen of the measurement mode This option changes regarding to the screen you come SCAN F4 It goes to the SCAN screen refer to section 4 2 5 4 1 LEVEL CHAN FREQ SPAN F5 Pressing this key you can navigate among editable parameters To change them use the Cursor keys or the alphanumeric keypad as appropriate It can be edited the LEVEL to change the margin of the power on the vertical axis of the graph CHANNEL to change the channel we are analysing FREQUENCY to change the frequency SPAN to change the frequency range shown on the horizontal axis of the graph Possible values are 1 5 15 30 50 100 MHz NOTE Access to the function SCAN SPECTRUM switches depending on the type of tuning you are doing In case you are tuning a signal using frequency it will be displayed the SPECTRUM function first In case you are tuning a signal using the predefined channels from the channel plan it will be displayed the SCAN function first 4 2 5 4 3 LOGGER function To access the LOGGER function 1 Press key _ 13 2 Press softkey TV F2 3 Press softkey LOGGER F4 LOGGER function in TV mode takes measurements exploring every channel on TV both digital and analog which are in the frequency band of the active channel plan Figure 29 Signal level measurement LVL fo
31. data network refer to section 4 2 4 DOWN IQ F2 lt switches between downstream data viewing refer to section 4 2 3 1 and downstream constellation viewing SPECTRUM SCAN F3 It shows the SPECTRUM screen refer to section 4 2 3 4 SCAN screen refer to section 4 2 3 3 LOGGER F4 Through this function you can store measurements in the memory of the instrument for later viewing printing or transfer to a PC refer to section 4 2 3 5 NOTE Access to the function SCAN SPECTRUM switches depending on the type of tuning you are doing In case you are tuning a signal using frequency it will be displayed the SPECTRUM function first In case you are tuning a signal using the predefined channels from the channel plan it will be displayed the SCAN function first 4 2 3 2 SEARCH function To access the SEARCH function 1 Press key ew 13 2 Press softkey MODEM F1 3 Press softkey SPECTRUM SCAN F3 4 Press softkey SCAN F4 if coming from SPECTRUM screen 5 Press softkey SEARCH F2 The SEARCH function identifies potential channels where you can make a ranging determination of scope with a number The number of these identifiers as well as its order it will determinate the time that may takes in adjust the emission power ranging 07 2008 Page 25 ZXPROMAX USER S MANUAL PROMAX 27 DOCS IS EuroDOCSIS SEARCHER B1 43 69 CHANNEL PLAN CCIR DOWNSTREAM C33 7570 00 cs ee 223 1
32. des risques d accidents affectant des personnes ou des dommages l appareil ou d autres biens users manua promaxer LAS PROIMIAXY TABLE OF CONTENTS Ve Te EE 1 1 1 Description nana 1 1 2 SpeGifiCatioris iiti ta 2 2 SAFETY RULES ioci eed ii Pee eee eee Tas 7 2 1 Generals ses 2 2 Descriptive Examples of Over Voltage Categories s s sssrssssrsrnnenrnnne 8 3 INSTALLATION 9 3 4 Power Supply zech 3 1 1 Charging the battery E 3 1 2 Recommendations using the battery EEN 10 3 2 Installation and putting in operation oonnncnnnnnonnnacnnnccnnaconann nano nnnrn cara nana 10 AE lee Ree 10 4 OPERATING INSTRUCTIONS A 11 4 1 Description of the controls and elements s 1 1 4 2 Operation Instructions eeeeeeee 22 13 4 2 1 SETUP Mode 2015 4 2 2 CONFIG MOG cocinan 17 4 2 2 1 EDIT CHANNEL PLAN escocia certain cti 19 4 2 3 MODEM Mode ar 4 2 3 1 CONSTELLATION DIAGRAM IQ eese 23 423 2 SEARCH UNC oet irte teer ier rrt tinas 25 4 2 3 3 SCAN function 27 4 2 3 4 SPECTRUM function 28 4 2 3 5 LOGGER function 90 4 2 3 6 TILT f nction ecrit wi 33 4 2 4 REGISTERED Mode IP NETWORK Functions 34 GE WAN EE 4 2 4 2 IPTV 4 2 4 3 PING nononnnnnnnnenean ET 4 2 4 4 TRACEROUTE irent ie nieda etie circa A M ele E A E E E A S E 4 2 5 1 TV D
33. digital video carrier as well as the demodulation of the audio carrier for details see 4 2 5 This option allows you to generate a signal test to check the upstream traffic for details see 4 2 6 In this menu you can set basic parameters of the analyser for details see 4 2 2 This menu allows you to introduce basic data concerning the system such as time date and language among others for details see 4 2 1 MENU To access any of these menus press ue 13 to access the start menu and then press the corresponding key F1 F2 F3 F4 F5 that are found in the lower frame selection 12 MENU Pressing the hotkey D 13 the instrument will always lead to the start menu regardless submenu in which we are CABLE TU amp IP ANALYSER cs KW Figure 3 Main menu with SOFTKEYS or programmable keys 07 2008 Page 13 USER S MANUAL PROMAX 27 PROMAX A E EH EI SSSR TEEN SNNAW 30 3uguv 3381 SANIN 2 sa ae SANZ 3a 7084Y A ou or Tp amu Z6 XVINOUd Oo 9 G9 rei Gia xus S zem BE a gases e nor og GST Wee EI SIEGE WASTE TESI EL erregt eg IO aS odd DEE m o E EEN E ees 5909 9 pass ag qiia aunseau sil a E 4d DER Es vea RES EI IH un II SR STS TE EDI erem ADS ELI aT a SEIS spins r
34. e PROMAX 27 is a portable instrument supplied by a built in Li lon battery Before taking any measurement we must ensure that the battery is charged 3 1 1 Charging the battery The instrument is supplied with a mains adapter in order to power or charge the instrument There are two situations that can arise in the battery charging process 1 Stopped Instrument When connecting the external power it will start a rapid charging cycle whose duration will depend on the battery status It will take three hours for a discharged battery The charging indicator on the front panel 10 will remain lit in amber colour during this period At the end of charging and in full charge the indicator will be green 2 Instrument in operation When connecting the charger it will start a charging process in a lower regime and therefore longer At the end of charging and in full charge the indicator will change from amber to green colour Figure 1 PROMAX 27 and mains adapter Before using the power adapter make sure that the adapter is PRECAUTION suitable for the mains voltage Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 07 2008 FAX 781 665 0780 TestEquipmentDepot com Page 9 ZXPROMAX USER S MANUAL PROMAX 27 3 1 2 Recommendations using the battery If anticipating a long period of inactivity of the instrument it is advisable to store it with battery fully charged and at temperatures below 2
35. e iss aus SOLI TDI noi uar Fre PAE ITI AS TE us FI dum mae ke E een eer oi Kas j 208 ere A KS org NS eis un mer c o Ga E EL poc mE ES Zu ec DOSEN Ste Qj Zeie Ui i re im EME DE en w we me H e Eu TE EDEN n pm Spl WZb SZ 66 a m Sn aa san eso aoe a TRS O anne ee 07 2008 Figure 4 General view of menu tree See quick reference guide Page 14 Leem mere ED 4 2 1 SETUP Mode To access the SETUP mode for configuring system MENU 1 Press key cen 13 2 Press softkey SETUP F5 It will appear a screen with the configuration parameters of the system Figure 5 SYSTEM CONFIGURATION 61 43 89 TIME 62 14 24 85 2806 DATE OS SRECNE AUTO POWER OFF HETWORE Figure 5 SETUP Screen To change the status or value of a parameter Use the cursor keys 7 to scroll along the menu A SEL 2 Go to the parameter you want to modify and press the selection key Pu 8 3 The cursor will move next to the parameter value Now you can change that value using the cursor or the alphanumeric keypad depending on the case 4 After you have made your changes press again the selection key 8 to save changes 5 To exit Configuration Mode and return to the main menu press again the MENU key ew 13 07 2008 Page 15 a b c d e 1 9 h ZXPROMAX USER S MANUAL PROM
36. frequency corresponding to channel 30 569 MHz does not match with the defined one for the current CCIR channel plan CH 33 570 MHz it will be possible to take measures corresponding to the Docsis normative for the standard FCC channel plan CH 30 569 MHz with no need to modify the current channel plan or to enter a new one Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com 07 2008 Page 65
37. hting 07 2008 Page 11 ZXPROMAX USER S MANUAL PROMAX 27 4 A 5 6 7 8 9 10 11 12 13 14 15 16 Connection to computer or printer CC 209 specific connection cable Do not connect any cable different than the one supplied by the manufacturer otherwise the instrument may suffer serious damage Contrast Adjustment LAN connector ETHERNET Navigation buttons Cursor keys SEL Selection button Alphanumeric keypad 12 keys for data entry Battery charge indicator D On Off key np pn FB SOFTKEYS 5 programmable keys E Main menu Shortcut key Ambient light detector Loudspeaker DC power input adaptor Page 12 07 2008 users manua promaxor LARS PROIMIAXY 4 2 Operation Instructions The five main functions of PROMAX 27 are accessible from the initial menu pressing the key 13 1 MODEM MODE 2 TV MODE 3 GENERATOR MODE A CONFIG MODE 5 SETUP MODE This option allows you to check the response of a data transmission system DOCSIS EuroDOCSIS It works on both uplink and downlink It can store and display the measures obtained from the constellation in QAM modulation It also performs tests on applications using IP protocol over cable for details see 4 2 3 and 4 2 4 This option has three submenus Analog TV Digital TV and SLM Signal Level Meter In these modes we can make the analysis of analog carrier and
38. igure 7 The attached figure Figure 7 shows an example of a channel plan At the top of the screen appears the name of the selected plan channel CCIR in the attached figure Along the screen are listed the channels belonging to the channel plan The maximum number of channels that a plan channel could have is 140 From left to right are the following columns NAME It identifies the channel name FREQUENCY It identifies the frequency associated to the channel MHz OFFSET lt shows the displacement of the tuning frequency in MHz TYPE It indicates whether the channel is defined as analog A or digital D ACTIVE It indicates whether the channel is active Y or not N EDIT CHANNEL PLAN CCIR B1 43 69 HAME FREQUENCY 3 4 m D m D m D mi D Vf D m D ai D Y D m D m D Y D Y Figure 7 Channel Plan Editor 07 2008 Page 19 AxPROMAX USER S MANUAL PROMAX 27 At the bottom of the screen it appears the following options BACK F1 and F5 ALL D ALL A F3 EDIT F4 CHANNEL EDIT AFREQUENCY MODULATION SYMBOL RATE SYSTEM To return to the previous general configuration screen CONFIG If you select this option you could change the type of signal defined in all channels to digital or analogue as appropriate When selecting this option you will access to the CHANNEL EDIT mode Figure 8 to configure the parameters of the analogical or digital channel Bi 43 69 CH
39. ilots are the ones that can be tuned simultaneously on the screen By this way you can evaluate the losses slope and therefore readjust equalizers of amplifiers in order to compensate these losses and ensure a flat response across the band TILT MEASUREMENT Bi 43 69 Pi EEN MHz y 65 dBu P2 868 88 MHz 68 dBuU a 8 01 dB MHz 65 68 55 59 45 48 35 39 5 Figure 17 TILT Screen At the bottom of the screen Figure 17 you will see next options BACK F1 To return to the previous menu PILOT 1 PILOT 2 F2 Pressing this key you can navigate among editable parameters To change them use the Cursor keys or the alphanumeric keypad as appropriate PILOT 1 is used to define the first reference frequency PILOT 2 is used to define the second reference frequency If using Cursor keys to define the frequency it will be by steps selected in STEP FREQUENCY see paragraph 4 2 2 If using alphanumeric keypad press SELECT to save values and finish Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 o7 2008 FAX 781 665 0780 TestEquipmentDepot com Page 33 ZI PROMAX USER S MANUAL PROMAX 27 4 2 4 REGISTERED Mode IP NETWORK Functions In order to use the REGISTERED mode functions is necessary to register the instrument in the network configuring the information needed to identify it such as IP Netmask and Gateway refer to section 4 2 1 If you are not registered in the network you wi
40. ing speed AVG MAX PEAK F2 It can be changed the measurement mode The current mode appears below the selected channel In the AVERAGE option it makes an average of values in the MAX HOLD option it keeps the maximum values measured due to impulsive signals remaining on the screen with dotted lines PEAK option uses as reference the peak values MODEM F3 It leads to the MODEM screen refer to section 4 2 3 SCAN F4 It goes to the SCAN screen refer to section 4 2 3 3 07 2008 Page 29 ZXPROMAX USER S MANUAL PROMAX 27 LEVEL CHAN FREQ SPAN F5 Pressing this key you can navigate among editable parameters To change them use the Cursor keys or the alphanumeric keypad as appropriate It can be edited the LEVEL to change the margin of the power on the vertical axis of the graph CHANNEL to change the channel we are analysing FREQUENCY to change the frequency SPAN to change the frequency range shown on the horizontal axis of the graph Possible values are 1 5 15 30 50 100 MHz NOTE Access to the function SCAN SPECTRUM switches depending on the type of tuning you are doing In case you are tuning a signal using frequency it will be displayed the SPECTRUM function first In case you are tuning a signal using the predefined channels from the channel plan it will be displayed the SCAN function first 4 2 3 5 LOGGER function To access the LOGGER function 1 Press key 13 2 Press key
41. ion Error Ratio Digital signal Error Ratio Frequency Channel and active channel plan Modulation Symbol Rate Uplink level power Attenuation until CMTS Frequency 07 2008 BW Bandwidth MOD Modulation SR Symbol Rate At the bottom of the screen are displayed the following options IP NETWORK F1 It reports about data network refer to section 4 2 4 DOWN IQ F2 Pressing this key you can switch between downstream data report and downstream constellation refer to section 4 2 3 1 SPECTRUM SCAN F3 Goes to SPECTRUM function refer to section 4 2 3 4 SCAN function refer to section 4 2 3 3 REGISTER F4 Through this function you can store measurements in the memory of the instrument for later viewing printing or transfer to a PC refer to section 4 2 3 5 FREQ BW CHAN F5 Pressing this key you can navigate among editable parameters To edit a value use the Cursor keys or the alphanumeric keypad as appropriate In this case you can edit FREQ is the frequency of the tuned channel BW is the bandwidth CHANNEL is the name of the tuned channel By this way you can change the tuned channel and measure other signals NOTE Access to the function SCAN SPECTRUM switches depending on the type of tuning you are doing In case you are tuning a signal using frequency it will be displayed the SPECTRUM function first In case you are tuning a signal using the predefined channels f
42. l level the margin of values are from 60 to 110 dBuV MOD for changing the type of modulation of the signal the possible values are QAM8 QAM16 QAM32 QAM64 and QPSK S R for changing the symbol rate of the pilot signal the possible values are 160 320 640 1280 2560 and 5120 FREQ for changing the frequency of a pilot signal the margin of possible values are from 5 MHz to 50 MHz Page 57 ZXPROMAX USER S MANUAL PROMAX 27 4 3 CONNECTING TO DEVICES The PROMAX 27 permits the connection to a PC or to a serial printer for data transfer by means of the connection cable model CC PX27 Do not connect any cable other than that supplied by the manufacturer otherwise serious damage may be caused to the equipment 1 Prior to connecting the equipment to a PC disconnect both from their respective power supplies 2 Connect the end of the connection cable corresponding to the PROMAX 27 to connector 4 and the other end to the serial port of your computer or printer Once the computer or printer has been connected select on the PROMAX 27 the LOGGER operation mode If PRINT function is selected data will be dumped to the remote unit through the serial port The communication parameters used by the PROMAX 26 and which therefore must be defined on the remote unit PC are the following Rate 57600 bauds Data bits 8 bits Parity None Stop bits 1 The remote control software RM 027 optional accessory permits to carry
43. l of signal to detect It is editable by the cursor keys 7 and the alphanumeric keypad At the SCAN function the threshold is represented in the chart by a dotted line All measures below the threshold value will not appear on screen At the LOGGER function will not be measured channels below the threshold value At the SEARCH function will not be searched channels below the threshold value NOISE MEASUREMENT MODE It measures the noise level It is only applicable to digital channels There are three ways to measure noise FREC Absolute where noise level is measured at the frequency noise defined at field NOISE FREQUENCY see paragraph i AF Relative where is added the value defined in the field NOISE FREQUENCY to the tuner frequency and BW 2 where is added the value defined in NOISE FREQUENCY to the frequency of half the bandwidth of the tuned channel 07 2008 Leem mere ED i NOISE FREQUENCY Only for digital channels Frequency at which is measured the level of noise for digital channels j STEP FREQUENCY This option allows you to select the step frequency at the frequency tuning modes and at the GENERATOR mode 4 2 2 1 EDIT CHANNEL PLAN To access the EDIT CHANNEL PLAN menu 1 Press key 13 2 Press softkey F5 SETUP 3 Use the cursor keys 7 to scroll along the menu 4 Go to the parameter EDIT CHANNEL PLAN and press the selection key 8 It appears the screen with the configuration parameters f
44. ll be able to access these functions but they will be disabled To access the REGISTERED mode in order to analyse network services 1 Press key e 13 2 Press softkey MODEM F1 3 Press softkey IP NETWORK F1 4 The instrument starts the registration process in the CMTS of the NETWORK On the display it will appear the word TUNING during the process You must wait a few minutes until it is registered If registration process is right it will display the word DONE on the screen Failure in registration process will be displayed as an ERROR IN REGISTRATION It is displayed the REGISTERED mode screen At the bottom menu it is shown each one of functions that you may use Figure 18 DOCS IS EuroDOCSIS REGISTRATION 6d 43 69 FR 128 58 MHz CH EEE CCIR IP CABLE MODEM 192 9 100 252 IP GATEWAY 192 9 100 1 NETMASK 255 255 255 IP TOD SERVER 192 9 188 248 IP TFTP SERVER 192 9 188 204 CONFIGURATION FILE TUNING Figure 18 Registered mode Screen At the bottom of the screen it will appear next options BACK F1 Back to the previous screen MODEM VoIP F2 It checks the VoIP service refer to section 4 2 4 1 IPTV F3 It checks the TV over IP service refer to section 4 2 4 2 Page 34 07 2008 users manua emomax LARS PROIMIAX PING F4 It checks the packet transmission over the cable refer to section 4 2 4 3 TRACE F5 It shows the route taken by packets acro
45. ll need the RM 027 software To return to the previous menu EDIT CHANNEL PLAN press key BACK F1 or FS To exit the menu EDIT CHANNEL PLAN and return to the previous screen CONFIG press key BACK F1 or F5 4 2 3 MODEM Mode To access the MODEM mode in order to measure downstream upstream and services over IP ms MENU 1 Press key m 13 2 Press softkey MODEM F1 3 It appears the initial screen in MODEM mode Figure 9 07 2008 Page 21 AxPROMAX USER S MANUAL PROMAX 27 DOCS IS EuroDOCSIS ANALYSER B1 43 69 UPSTREAM DOWNSTREAM gaz 202 4275 S47 FR Bl HOD SR 27 85 MH275 d 254 58 MHz 3 3 MHz k S14 CCIR GRH64 i GAGE MHz 1288 ks9mes ans HG 2568 ksyms PreBER 41 BE 8 STARTING Figure 9 Initial MODEM Screen To change between displaying downstream data or the constellation diagram press IQ DOWN F2 To enable or disable the constellation diagram press the selection key 8 The measurement of power in digital channels is done by a method of integration with a bandwidth defined by the channel or the user The uplink UPSTREAM shows the channel that the equipment uses in the communication with the CMTS Cable Modem Termination System The screen shows measurements for both upstream and downstream where Downstream PWR MER PreBER FR CH MOD SR Upstream PWR Page 22 Channel power Modulat
46. ng Service which is one of the quality services defined by DOCSIS EuroDOCSIS standard That will ensure the best quality of TV over cable The PING function performs an analysis of standard Internet traffic such as browsing websites emails or instant messaging To check the quality of service it uses the quality of service defined as BE Best Effort based on the standard DOCSIS EuroDOCSIS In short implementation of all these functions into an light instrument of one kilo and a half weight ergonomic design and robust makes PROMAX 27 into an unparalleled tool at fieldwork 1 2 Specifications A TUNING Tuning range From 5 to 862Hz MODEM mode From 53 to 855 MHz Tuning mode By channels or by frequency Channel plan 10 channel plans each one with a maximum of 140 channels Factory start up channel plans CCIR EIA HRC IRC OIRL UK AUNAD ST2L AUST ONO Resolution 10 kHz Indication Graphic LCD display with automatic back lighting Channel frequency offset 2 5 MHz GENERATOR Carriers frequency range 5 60 MHz Resolution 100 kHz Page 2 07 2008 USER S MANUAL PROMAX 27 Accuracy Carrier level Signal level resolution Signal level accuracy Modulation Symbol Rate BROADBAND POWER LEVEL MEASUREMENT Measuring range Bandwidth Resolution Accuracy LEVEL MEASUREMENT Measurement Analogue channels Digital channels Measuring range Maximum input level From 5 to 862 MHz DC to 60 Hz Readout I
47. ode For more details refer to section 4 2 3 6 At the bottom of the screen you will see next options BACK F1 To return to the previous menu PILOT 1 PILOT 2 F2 Pressing this key you can navigate among editable parameters To change them use the Cursor keys or the alphanumeric keypad as appropriate PILOT 1 is used to define the first reference frequency PILOT 2 is used to define the second reference frequency If using Cursor keys to define the frequency it will be by steps selected in STEP FREQUENCY see paragraph 4 2 2 If using alphanumeric keypad press SELECT to save values and finish Page 56 07 2008 USER S MANUAL PROMAX 27 AxPROMAX 4 2 6 TEST SIGNAL GENERATOR mode To access the TEST SIGNAL GENERATOR mode MENU 1 Press key e 13 2 Press softkey GTOR F3 It is displayed the TEST SIGNAL GENERATOR screen Figure 32 FRECUENC POWER 118 dBu MODULAT ION anrea SYMBOL RATE 2568 ksum s Figure 32 Setting parameters of the test signal This function creates a test signal to check the upstream traffic The instrument recovers the configuration of the last work session and shows it on the screen At the bottom of the screen you will see next options POWER MOD S R FREQ F5 07 2008 Pressing this key you can navigate among editable parameters To change them use the Cursor keys or the alphanumeric keypad as appropriate POWER for changing the power signa
48. omax LAS PROIMIAXY On the display Figure 20 are shown different measurements PING ADDRESS Address where PING is send When selecting IP address if you use the cursor keys you will access to last IPs entered by the user NODE Indicates the node where you are connected IP Indicates the IP where you are sending the PING LATENCY It is the time delay between initial input and output due to transport or processing It shows the minimum average and maximum measurement JITTER It is an unwanted variation of one or more characteristics of a periodic signal Jitter may be seen in characteristics such as the interval between successive pulses or the amplitude frequency or phase of successive cycles PLR Packet Loss Rate Is the percentage of lost packets over total sent packets TOTAL PLR It shows the total number of lost packets If the device is not properly registered in the network at the bottom of the screen it will display the warning message Register Error At the bottom of the screen is shown the following options BACK F1 To return to the previous screen REGISTERED mode SEND F2 To send the testing ping CONFIG F3 You will access to IPTV settings Nominal Polling Interval NODE F4 Moves the cursor to the right going to the next node NODE F5 Moves the cursor to the left going to the previous node 4 2 4 3 PING Description of Service The protocol DOCSIS EuroDOCSIS use
49. r analogue channels or power PWR for digital channels Audio Video ratio A V measurement in analogue channels Carrier noise ratio C N measurement in analogue channels or MER in digital channels 07 2008 Page 53 AXPROMAX USER S MANUAL PROMAX 27 Digital channel BER measurement Symbol rate The PROMAX 27 can store in its memory up to 50 acquisitions or loggers in TV mode and analyse up to 140 channels in each one These measurements are stored for later viewing printing or transfer to a PC MEASURE TU LOGGER Bl 43 69 MEASURING CH2 56 56 MHz Figure 28 Measuring data On the left side of the screen you can see the record number followed by time and date was saved and the name given The instrument automatically assigns a sequential name to the file or reuses a name of a removed file If there are not files stored it will be shown the message EMPTY LOGGER TU LOGGER Bi 43 09 t B 13 64 29 18 86 2808 L GGERBG 1 13 16 88 11 66 2068 LOGGERO1 3 0 11 45 00 11 06 2008 LOGGERBS Figure 29 List of TV stored loggers Page 54 07 2008 users manuar mere ED At the bottom of the screen you will see next options STORE F1 Measurements corresponding to channels of the channel plan selected are will be score in a logger DEL F2 It deletes the logger that the cursor is pointing at System requires confirmation To confirm deleting press softkey F4 To cancel press F
50. rk based on parameters set by BE which will ensure the best quality service The deep knowledge about network conditions will guide you during installation and will help you solving problems that may arise To access the PING function MENU 1 Press key Q 13 2 Press softkey MODEM F1 3 Press softkey IP NETWORK F1 4 The instrument starts the registration process in the CMTS of the NETWORK On the display it will appear the word TUNING during the process You must wait a few minutes until it is registered If registration process is right it will display the word DONE on the screen Failure in registration process will be displayed as an ERROR IN REGISTRATION 5 Press softkey PING F4 DOCS IS EuroDOCSIS ANALYSER B1 43 69 MIN TIME MAX TIME RUG TIME Figure 21 PING report Page 40 07 2008 users manua emomar o APRA Data shown on the screen Figure 21 are PING ADDRESS lt indicates the remote address of the device or the access point to verify This is an editable field PING NUMBER It indicates the number of PING attempts PING DATA LENGHT It indicates the length of the PING sent in bytes SEND It indicates the number of sent PING packets RECEIVE It indicates the number of PING packets received PLR Packet Lost Rate Is the percentage of lost packets over total sent packets MIN TIME It indicates the minimum time that a PING has been sent and received back MAX
51. rom the channel plan it will be displayed the SCAN function first 4 2 3 1 CONSTELLATION DIAGRAM IQ To access the IQ Constellation Diagram function wend 1 Press key _ 13 2 Press softkey MODEM F1 3 Press softkey IQ F2 07 2008 Page 23 ZI PROMAX USER S MANUAL PROMAX 27 It is the graphic representation of the Constellation Diagram Figure 10 for DVB QAM digital signal For details see Appendix B Principle of QAM Modulation The constellation Diagram E DOCSIS ANALYSER UPSTREAM gom 202 FR 27 85 MHz 81 Bl 3 3 MHz HOD QAME4 SR 1288 ksum s STARTING Figure 10 Constellation Diagram Measurements displayed on the screen PWR Uplink level power ATT Attenuation until CMTS FR Carrier frequency and UCI BW Signal bandwidth MOD Modulation SR Symbol rate At the bottom of the screen next to the lower left corner of the diagram it is indicated what quadrant is represented on screen Using the Cursor keys 7 you can change quadrant of the constellation The initial option ALL represents the whole diagram Options Q1 Q2 Q3 Q4 show each one of the four quadrants Options ZQ1 ZQ2 ZQ3 and ZQ4 show a zoom in of each quadrant Pressing the selection key 8 it switches between viewing and hiding the constellation diagram Page 24 07 2008 At the bottom of the screen is shown the following options IP NETWORK F1 Registers into the network it reports about
52. rrier Noise Ratio FR Channel tuned frequency CH Channel and plan channel 07 2008 Page 47 AxPROMAX USER S MANUAL PROMAX 27 At the bottom of the screen you will see next options SLM F1 AUDIO F2 SPECTRUM SCAN F3 LOGGER F4 CHAN FREQ F5 It leads to SLM mode It gets a demodulated audio signal refer to section 4 2 5 2 1 It goes to SPECTRUM mode refer to section 4 2 5 4 2 SCAN mode refer to section 4 2 5 4 1 Through this function you can store measurements in the memory of the instrument for later viewing printing or transfer to a PC refer to section 4 2 5 4 3 Pressing this key you can navigate among editable parameters To change them use the Cursor keys or the alphanumeric keypad as appropriate FREQ for changing the frequency value of the tuned channel CHANNEL for changing the channel of the channel plan If channel we are analysing is defined as digital it will appear a warning message on the screen The message will be Warning CXX is defined as DIGITAL 4 2 5 2 1 AUDIO function To access the AUDIO function ean MENU 1 Press key VEW 13 2 Press softkey TV F2 3 Press softkey F1 until you find ANALOG mode 4 Press softkey AUDIO F2 In analogue mode the PROMAX 27 allows obtaining a demodulated audio signal and showing its characteristics Page 48 07 2008 users manuar mere ED ANALOG TU AUDIO METER B1 43 a3 FR 243 58 MH
53. rs The Meter Level function will take measures both analog channels C N ratio level of carrier V A ratio and digital Power VER MER Constellation The Register function allows you to take and store up to 100 measurements acquisitions in memory each one of them can get to store up to 140 channels with all the measurements taken in the analysis of data transmission The acquired measures can be reviewed transferred to a PC or printed anytime 07 2008 Page 1 ZXPROMAX USER S MANUAL PROMAX 27 The Frequency Scan function shows the level of all active channels in the channel plan through a bar chart By the Generator Function it is possible to create a test signal that allows you to equalize properly the transmission band upstream As Spectrum Analyser function provides an analysis of the whole band allowing change the reference level and the span among others As Analyser Data Systems for DOCSIS EuroDOCSIS the PROMAX 27 allows you to measure downstream upstream and the constellation The VoIP function performs a network analysis based on quality service parameters established by the operation mode UGS Unsolicited Grant Service for data packets transmission which is based on DOCSIS EuroDOCSIS standard Therefore those will ensure the best call quality PROMAX 27 as IPTV services analyser performs a comprehensive analysis of the network based on the quality of service QoS named rtPS real time Polli
54. s CREDE CCIR Bl 8 op MHz Ui Figure 12 SCAN function Measurements displayed on the screen PWR It indicates the signal power ZPWR It indicates the summation of power signals along the frequency band from 5 to 1000 MHz FR Carrier intermediate frequency CH Shows the channel and active plan channel BW Bandwidth of the signal Vl Indicates whether the selected channel is digital or analogue The dotted line at the graph indicates the threshold level below which will not show any power signal 07 2008 Page 27 ZXPROMAX USER S MANUAL PROMAX 27 At the bottom of the screen are shown the following options SPECTRUM F1 It leads to the SPECTRUM screen refer to section 4 2 3 4 SEARCH F2 It makes an exploration of all channels DOCSIS EuroDOCSIS presents at the frequency band of the active channel plan refer to section 4 2 3 2 MODEM F3 Returns to the main screen MODEM refer to section 4 2 3 TILT F4 Goes to TILT test refer to section 4 2 3 6 LEVEL CHAN SPAN F5 Pressing this key you can navigate among editable parameters To change them use the Cursor keys or the alphanumeric keypad as appropriate lt can be edited the LEVEL to change the margin of the power on the vertical axis of the graph CHANNEL to change the channel we are analysing SPAN to change the frequency range shown on the horizontal axis of the graph Possible values are 10 30 100 300 MHz and MA
55. s To change them use the Cursor keys or the alphanumeric keypad as appropriate FREQ for changing the frequency value of the tuned channel VOLUME to increase or decrease the sound volume heard by the speaker of the instrument CHANNEL for changing the channel of the channel plan 4 2 5 4 COMMON FUNCTIONS in TV mode Next we are going to explain the functions that are common to the three TV modes 4 2 5 4 1 SCAN function To access the SCAN function MENU 1 Press key e 13 2 Press softkey TV F2 3 Press softkey F1 to select the mode you want to work DIGITAL ANALOG SLM 4 Press softkey SPECTRUM SCAN F3 5 Press key SCAN F4 if coming from SPECTRUM screen This function is the same one than the SCAN function in MODEM mode For more details refer to section 4 2 3 3 At the bottom of the screen are shown the following options SPECTRUM F1 It leads to the SPECTRUM screen refer to section 4 2 5 4 2 DIGITAL F3 Returns to the main screen DIGITAL TV POWER METER refer to section 4 2 5 1 TILT F4 It leads to TILT screen refer to section 4 2 5 4 4 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 07 2008 FAX 781 665 0780 TestEquipmentDepot com Page 51 ZXPROMAX USER S MANUAL PROMAX 27 LEVEL CHAN SPAN F5 Pressing this key you can navigate among editable parameters To change them use the Cursor keys or the alphanumeric keypad as appropri
56. s of the first carrier signal l or signal in phase we would obtain the image in figure 34 e e e e e I 3 0 1 0 1 0 3 0 Figure 34 Signal I states Q A e 3 0 e 1 0 e 3 0 Figure 35 Signal Q states 07 2008 Page 63 ZXPROMAX USER S MANUAL PROMAX 27 Figure 35 shows the other signal Q in quadrature on a vertical axis to consider the 90 phase change Figure 36 LO states combination Figure 36 shows the combination of these two signals This image constitutes the Constellation Diagram of the modulated digital signal Page 64 07 2008 APPENDIX C FREQUENCY OFFSET ADJUSTMENT FOR TUNING ANALOGUE AND DIGITAL CHANNELS It is possible to introduce an offset of the tuning central frequency for the channels defined in each channel plan using the AFCH parameter 2 5 MHz Therefore it is possible to adapt the measures to irregular tunings due to small displacements on channel central frequencies that are defined by the standard channel plan central Freq Ch 30 FCC 569MHz a Central Freq Ch 33 CCIR 570MHz EN E ol Offset 1MHz AFCH 1MHz Ch 33 Figure 37 Frequency offset on the tuning central frequency Taking as example the previous figure if we suppose that in the configuration parameters of the digital channel CH 33 a frequency offset equals to 1 MHz has been defined for the channel tuning frequency AFCH 1MHz although the central
57. s the concept of service flows for traffic transmitted between cable modem and CMTS A service flow is a one way packets flow that provides a specific service quality Traffic is classified in a service flow and each service flow has its own set of parameters named QoS 07 2008 Page 39 ZA PROMAX USER S MANUAL PROMAX 27 QoS Quality of Service are technologies that ensure the transfer of certain amount of data at a time ensuring a good quality of service In the case of standard Internet traffic such as browsing websites emails or instant messaging the quality of service defined as BE Best Effort is the most appropriate BE is one of the four services QoS defined in DOCSIS EuroDOCSIS and is designed to work on a first come first served basis To perform the PING test a PING Packet Internet Grouper is sent It is about transmitting data packets point to point between PROMAX 27 serving as cable modem and another remote point access to the network that answer to the transmission These PING are a set data packets with a request and response echo This way it can be checked the status of the connection with the test point to verify From the obtained data it is displayed a BE report the PLR and latency The results shown indicate what problems must be identified and resolved and those ones that may be caused by problems at headers or IP In short the PING function of the PROMAX 27 performs an exhaustive analysis of the netwo
58. ss an IP network from the instrument to the host refer to section 4 2 4 4 Next we are going to explain each one of functions you can use in register mode VoIP IPTV PING and TRACEROUTE 4 2 4 1 VoIP Service Description To implement the basic telephony service in CATV networks is necessary to consider the profile of a demanding customer used to the quality of traditional telephone networks To meet those expectations must be maintained almost the quality of the traditional service The protocol DOCSIS EuroDOCSIS uses the concept of service flows for traffic transmitted between cable modem and CMTS A service flow is a one way packets flow that provide a specific service quality Traffic is classified in a service flow and each service flow has its own set of parameters named QoS QoS Quality of Service are technologies that ensure the transfer of certain amount of data at a time ensuring a good quality of service There are four types of QoS defined depending on the type of data to transmit UGS Unsolicited Grant Service rtPS real time Polling Service nrtPS non real time Polling Service and BE Best Effort In the case of VoIP voice over IP the type UGS is the most suitable because it is designed for applications that generate fixed size packets on a periodic basis In this type CMTS provides a fixed size grant to a service flow at fixed intervals without additional polling or interaction The PROMAX 27 allows
59. ss the subjective quality of speech in communications systems Can range from 1 worst to 100 best MOS Mean Opinion Score It is a numerical indication of the perceived quality of received media after compression and or transmission The MOS is expressed as a single number in the range 1 to 5 where 1 is lowest perceived quality and 5 is the highest perceived quality 07 2008 users manua emomax LARS PROIMIAXY LATENCY lt is the time delay between initial input and output due to transport or processing lt shows the minimum average and maximum measurement JITTER It is an unwanted variation of one or more characteristics of a periodic signal Jitter may be seen in characteristics such as the interval between successive pulses or the amplitude frequency or phase of successive cycles Are shown the minimum average and maximum measurements If the device is not properly registered in the network at the bottom of the screen it will display the warning message Register Error At the bottom menu it is shown each one of functions that you may use BACK F1 To return to the previous screen REGISTERED SEND F2 To send the ping CONFIG F4 You will access to VolP settings Among them there are Ping data length ping number unsolicited grant size grants per interval nominal grant interval tolerated grand jitter Use the cursor to move among parameters and the selection key 8 to enter and save them COD
60. the user to establish a service flow to verify the quality of service based on type UGS type Flow services are used to verify the network between the test point and the CMTS lt analyses parameters that can affect the quality of communication among them latency jitter lost packets MOS and R value In short the VoIP function of the PROMAX 27 performs an exhaustive analysis of the network based on parameters set by UGS which will ensure the best quality service 07 2008 Page 35 ZA PROMAX USER S MANUAL PROMAX 27 To access the VoIP function 1 2 3 4 al MENU Press key ven 13 Press softkey MODEM F1 Press softkey RED IP F1 The instrument starts the registration process in the CMTS of the NETWORK On the display it will appear the word TUNING during the process You must wait a few minutes until it is registered If registration process is right it will display the word DONE on the screen Failure in registration process will be displayed as an ERROR IN REGISTRATION Pres softkey VoIP F2 VoIP QoS ANALYSER Br11 PLC 5 8 x 77 4 Figure 19 VoIP Screen On the screen Figure 19 are displayed next data Page 36 IP ADDRESS Address where PING is send PLR Packet Loss Rate Is the percentage of lost packets over total sent packets CODEC Type of encoding used for signal transmission R VALUE It shows a number or score that is used to quantitatively expre
61. udes three different operation modes Analogue Digital and SLM Signal Level Meter Next we explain measurements of each mode Analog TV Video Meter Video carrier level Carrier Noise Ratio C N Video Audio Ratio V A Digital TV Power Meter Channels Power by Integration Carrier Noise Ratio C N Bit Error Rate BER Modulation Error Ratio MER Constellation Diagram Signal Level Meter SLM Select the Tone AM FM and volume regulation Power level Channel Once in TV mode to change the measurement mode you should press the softkey F1 MNS DIGITAL ANALOGUE F1 Changes among the three TV measurement modes At the top of the screen you can read in which mode you are Next we are going to explain each one 07 2008 Page 43 LAxPROMAX USER S MANUAL PROMAX 27 4 2 5 1 TV DIGITAL mode To access this measurement mode from TV mode press F1 until you see at the top of the screen DIGITAL TV POWER METER Figure 23 BREREE nz C31 CCIR Sam 12 BL 7 66 MHz NOISE FREQUENCY 451 88 MHz REH 34 44 54 64 74 84 94 164 114 124 134 Figure 23 Digital TV measurement screen Measures on the screen are PWR Power received from the signal C N Carrier Noise Ratio NOISE FREQUENCY Noise frequency FR Channel tuned frequency CA Channel and plan channel BW Bandwidth At the bottom of the screen you will see next options MNS DIGITAL
62. ulation L standard it can vary from 0 to 2 dB among white and black image 07 2008 Page 3 ZXPROMAX USER S MANUAL PROMAX 27 Constellation Diagram ITU J83 Annex A B C and DOCSIS EuroDOCSIS compliant signals Lock range 10 dBmV to 60 dBmV Symbol rate Measurement range 1000 to 7000 Msym s for QAM 16 64 256 Datalogger Power level BER MER and constellation diagram can be stored for data dumping to printer or PC Modulation type QAM 16 32 64 128 256 ITU J83 annex A B C and QPSK Bandwidth Selectable Frequency tuning 62 5 kHz VIDEO AUDIO RATIO MEASUREMENT ANALOGUE CHANNELS Measurement Ratio of video to audio carrier levels Measurement range From 0 to 30 dB Audio subcarrier frequency Variable 0 1 9 9 MHz Accuracy 2 dB from 5 to 40 C for FM audio carrier CARRIER NOISE RATIO MEASUREMENT Measurement Analogue channels Ratio between carrier level and the channel s noise level Digital channels Ratio between the channel power and the noise level The frequency where noise is measured is user definable in absolute or relative value In the relative mode the unit takes as default frequency offset the value BW 2 0 5 MHz Measurement range Analogue channels 40 50 dB for input level between 60 and 70 dByV gt 50 dB for input level gt 70 dBuV Digital channels gt 30 dB for input level gt 60 dBuV Accuracy 2 dB 45 862 MHz 3 dB 5 45 MHz CABLE MODEM DOCSIS EuroDOCSIS 1 0 1 1 2 0 TV M
63. y followed Use this equipment connected only to devices or systems with their common at ground potential This equipment can be used in Over Voltage Category installations and Pollution Degree 2 environments Use the mains adapter in Over Voltage Category Il installations and Pollution Degree 1 environments It is for INDOOR USE When using some of the following accessories use only the specified ones to ensure safety Power adapter Car cigarette lighter adapter Mains cord Observe all specified ratings both of supply and measurement Use this instrument under the specified environmental conditions The user is not authorised to manipulate inside the instrument Any change on the equipment should be carried out by qualified personnel Follow the cleaning instructions described in the Maintenance paragraph 07 2008 Page 7 ZXPROMAX USER S MANUAL PROMAX 27 DIRECT CURRENT ON Supply ALTERNATING CURRENT OFF Supply DIRECT AND ALTERNATING DOUBLE INSULATION Class II protection CAUTION Risk of electric shock GROUND TERMINAL PROTECTIVE CONDUCTOR CAUTION REFER TO MANUAL FRAME TERMINAL FUSE EQUIPOTENTIALITY 2 2 Descriptive Examples of Over Voltage Categories Cat Low voltage installations isolated from the mains Cat Il Portable domestic installations Cat Ill Fixed domestic installations Cat IV Industrial installations Page 8 07 2008 3 INSTALLATION 3 1 Power Supply Th
64. z Lu wn RF 1 5 MHz 25 Ide CH S14 CCIR E AF MHz i SOUND FM t 20 38 46 56 68 74 oo 98 108 119 128 Figure 26 Analogue Audio Signal Measurement Measurements shown on the screen Figure 26 are FR Signal tuned frequency CH Channel and plan channel LVL Audio carrier level AF Audiocarrier frequency V A Video Audio Ratio AF Audio carrier Offset At the bottom of the screen is shown the following options SLM F1 It leads to Signal Level Meter screen VIDEO F2 It returns to previous screen ANALOG TV VIDEO METER SPECTRUM SCAN F3 It goes to SPECTRUM mode refer to 4 2 5 4 2 SCAN mode refer to section 4 2 5 4 1 LOGGER F4 Through this function you can store measurements in the memory of the instrument for later viewing printing or transfer to a PC refer to 4 2 5 4 3 FREQ CHAN AF SONIDO VOL F5 Pressing this key you can navigate among editable parameters To change them use the Cursor keys or the alphanumeric keypad as appropriate FREQ for changing the frequency value of the video carrier CHANNEL for changing the tuned channel AF for changing the offset of the audio carrier SOUND for changing the type of signal AM FM OFF VOLUME for increase or decrease the sound volume heard by the instrument speaker 07 2008 Page 49 AxPROMAX USER S MANUAL PROMAX 27 4 2 5 3 SLM mode To access the Signal Level Meter from TV mode press

PROMAX-27 Manual

Contents

Download Pdf Manuals

Related Search

Related Contents