Tektronix packetBERT 200 Скачать руководство пользователя страница 138

Страница: 138 / 172

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Содержание packetBERT 200

Страница 1: ...ized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing Rentals Demos In stock Re...

Страница 2: ...Manual packetBERT 200 DC 200 Mbls Bit Error Rate Tester This document applies to firmware version 2 0 and above Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg...

Страница 3: ...tion supersedes that in all previously published material Specificationsand price change privileges reserved Printed in the U S A Tektronix Inc P O Box 1000 Wilsonville OR 97070 1000 TEKTRONIX and TEK...

Страница 4: ...defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under warranty a to repair damage resulting from att...

Страница 5: ...PB200 User Manual Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 6: ...hardware and software by expert application engineers For Applications Support call the Customer Support Center listed below Mailing Tektronix Inc Attn Customer Service Address Measurement BusinessDiv...

Страница 7: ...Fax 81 3 3444 3661 The Netherlands Hoofddorp Phone 31 23 069 5555 Fax 31 23 569 5500 Norway Oslo Phone 47 22 07 0700 Fax 47 22 07 0707 Spain Madrid Phone 34 1 372 6000 Fax 34 1 372 6049 Sweden Stockho...

Страница 8: ...hreshold 1 13 Change the Data Pattern 1 14 Setup for Mixed Mode Operation 1 15 Download a Pattern from Diskette 1 16 Load a Mixed Mode Pattern fromFloppy Disk 1 17 Other Examples of Pattern and Setup...

Страница 9: ...splay Control 2 24 Factory Default 2 25 RS 232 2 25 GPIB 2 26 Remote 2 26 More 2 26 Time Date 2 27 Monitor 2 27 Contrast 2 27 PATTERN 2 28 Analyzer 2 29 Floppy Drive 2 29 Rear Panel 2 30 Changing the...

Страница 10: ...BERT Testing with the PB200 3 38 Mixed Mode Patterns with the PB200 3 43 Appendices Specifications PB200 Appendix 2 System PerformanceVerification Appendix 5 Loading and StoringPattern Files Appendix...

Страница 11: ...MIXED Pattern 2 4 Figure 2 3 Model of Output Amplifier 2 6 Figure 2 4 Block Diagram PB200 Clock Input 2 8 Figure 2 5 Example of Gated Clock 2 8 Figure 2 6 Simplified Flow chart for Clock Slip Synchron...

Страница 12: ...to a properly grounded three conductor outlet If you operate the instrument without a proper ground then should there be a fault in the instrument there is a potential that all metal surfaceson the in...

Страница 13: ...tesa safety practicethat must be followed to avoid possible injuryto the user and possibledamage to the instrument A CAUTION Indicatesa safety practicethat must be followed to prevent possibledamage t...

Страница 14: ...ntative sample of Applications The Appendices provide a listing of specifications default factory settings system performance verification and other useful information Conventions This manual uses the...

Страница 15: ...using an instrument controller Certifications and Compliances CSA Certified Power Cords CSA Certification includes the products and power cords appropriatefor use in the North America powernetwork All...

Страница 16: ...Getting Started Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 17: ...al accessories The PB200 is a compact and portable tester with Tx and Rx in one box In addition this section explains how to operate the PB200 for the first time and how to verify that the PB200 is op...

Страница 18: ...mmunications has historically used data groups such as the type of data structures specified in the RS 232 standard In RS 232 transmissions ASCII characters are embedded in data groups of 10or 11 bits...

Страница 19: ...RROR HISTORY INTERNAL SYNC LOSS CLOCK GENERATORINPUT GENERATOR OUTPVTS Figure 1 1 Front Panel PB200 AC UNE m Printer I I VIDEO RS 232C WARNING CLK DlS INJECT REFERENCE ERROR RL ERROR I CRYSTAL INHIBIT...

Страница 20: ...provides capabilitiesto generate a gapped clock from memory in the generator and analyze data from an external non continuousclock Phase synchronousclock and data edge tracking this maintains constant...

Страница 21: ...optional accessories or additional standard accessories see the Tektronixproducts catalog or contact your local Tektronix field representative Standard Accessories Power cable Tektronix part number P...

Страница 22: ...nd some number of bits as payload overhead2 Overhead1 Payload Delay I 7 PRBS or WORD up to 256k Optional Figure 1 3 Structure of a Mixed Mode Pattern Features useful for packet data include programmab...

Страница 23: ...is shown in Figure 1 5 Clock Data 0 j 0 l 0 1 6 Bits of Payload Data PRBS 6 itsoipayload Data PRBS I 4 4 Bits Overhead 4 Payload 4 Bits overhead 4 Payload w j I Figure 1 5 Simple Packet Structure For...

Страница 24: ...the 128Kbit gap memory array it is an easy process to control the on and off bursting of the clock An external Clock Disable is also provided for external synchronization of PB200 data output Signal A...

Страница 25: ...re RS 232 and GPIB interfaces which can be used for downloadingtest data or automated remote control Instrument Connections and Controls Generator Outputs GENERATORINPUT GENERATOR OUTPUTS 1 CLDCK CLDC...

Страница 26: ...TI cL P Figure 1 7 Typical front panel display i i v 7 CLOCK OUTPUT cJ If the front panel does not look like this the unit should be reset to the default P setti ngs Note Resetting the unit tofactory...

Страница 27: ...CLEAR The Power loss LED will go OFF 2 Start the Generator Push the key STARTISTOP The LED inside the STARTISTOPkey will light and the PB200 Analyzer display will change to the following Analyzer CLO...

Страница 28: ...to 0 and remain there Also the error history LEDs will be cleared Change the Generator Frequency 1 Press the soft key CLOCK FREQ A pop up window will appear indicatingthe frequency that the Generator...

Страница 29: ...oft key DATA INPUT on the Analyzer side of display A pop up window will appear DATA THRES O O V DATA TERM GND DESKEW DELAY O O NS POLARITY NORMAL STARTUP DELAY 0 clocks This window displays the curren...

Страница 30: ...PRBS pattern is z7 1 LOAD PATTERN provides a way to load pattern files from a diskette using a default naming convention and pat file extensions This supports only one set of pattern files per floppy...

Страница 31: ...tor Setup for Mixed Mode Operation 1 On the Generator side press the key DATA PATTERN 2 Use the upldown keys to select MODE We are going to load a MIXED pattern from floppy therefore we will first cha...

Страница 32: ...e p r r I Generator Preamble i en prepat i usemame gpr i Generator Clock Gap I e n s a p pat i usemame ggp t 2 i j Analyzer Payload an pyld pat i username apl I Analyzer Overhead I username aoh i Anal...

Страница 33: ...ear FILE TYPE OVERHEAD PAYLOAD MUX PRE GAP Generatoronly ALL 5 Position the cursor on the ALL file type and press ENTER The following pop up window will appear FILETYPE ALL FILE NAME MPEG2 V2 could be...

Страница 34: ...ETYPE ALL FILE NAME MPEG2 V2 PATTERN LOAD STATUS PAYLOAD COMPLETE OVERHEAD COMPLETE MUX COMPLETE PRE AMBLE COMPLETE CLOCK GAP COMPLETE loads MPEG2 V2 GPL loads MPEG2 V2 GOH loadsMPEG2 V2 GMX loads MPE...

Страница 35: ...PAT Generator Payload contents AN PYLD PAT Analyzer Payload contents To store multiple sets of pattern files on a disk use a common prefix with unique suffix The extensions for saved and loaded files...

Страница 36: ...First Time Operation PB200 User Manual Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 37: ...Operating Basics Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 38: ...Following that is a description of the PB200 200 Mb s BERT Transceiverhardware controls indicators connectors and display elementsfor the Generator Tx and the Analyzer Rx PB200 User Manual Artisan Te...

Страница 39: ...ogram different patterns into the Tx and Rx which is required in order to test devices that change the data before returning it to the Rx The Word patterns run continuously like the pseudorandom patte...

Страница 40: ...between the Payload and the Overhead RAM thus allowing for mixed pattern generation When a MUX bit is set to zero the Payload RAM is selected and when it is set to a one the Overhead RAM is selected A...

Страница 41: ...election The Overhead and MUX RAM are defined by the user The figure below shows an example of a very simple mixed pattern to illustrate how the MIXED mode pattern generator works Contents Lenath MUX...

Страница 42: ...Payload only Overhead only or All Payload and Overhead In MIXED mode of operation this feature gives the user the maximum flexibility so that errors can be injected into the specific data filed that...

Страница 43: ...an ground the output will inherit a DC shift in offset voltage As a general rule terminate unused outputs with a 50 Ohm impedance The Data output from the transmitter is in TrueIComplementNRZ format a...

Страница 44: ...as low as one hertz with high frequency precision Frequency Multiplier The main purpose of this circuit is to multiply it s reference clock in this case the DDS output so that frequenciesof up to 200...

Страница 45: ...in GATED mode the clock output beforeit goes to the pattern generator is gated by its own separate pattern generator This pattern generator consists of a high speed RAM The length is programmable up...

Страница 46: ...edits the pattern once completed the unit will automatically resume running In START mode the user must start the unit after changing or editing patterns In either of the two modes when the unit start...

Страница 47: ...a number of bits will be examined until either a SYNC or SYNC LOSS condition can be declared This process is then repeated indefinitely Once a valid synchronizationis achieved the clock slip mechanis...

Страница 48: ...es 1 Sync threshold this is the value set by the Analyzer ErrorMode window via the SYNC THRESH parameter You enter a value from 1to 8 to specify different synchronizationerror thresholds used by the a...

Страница 49: ...Ts do not have a propagation delay of 0 nS which means that it may require clock slips time to synchronize The synchronizationtime dependson how large the propagation delay is the clock speed and the...

Страница 50: ...ND 2V 3V AC to satisfy differentinterface requirements The DATA input is provided for the signal to be tested As with the clock input this signal can be either differentialor singleended and there are...

Страница 51: ...erator and Analyzer start at the same time and at the bit location This means that if there is a propagation delay from the Generator output to the Analyzer input there will be a need to synchronize t...

Страница 52: ...r disabled These functions are Adjust Clock Threshold The CLOCK signal is examined to find the center of the voltage swing the threshold is set to the center of the active range Adjust Data Threshold...

Страница 53: ...cycle bits The ratio of errors to bits is the Bit Error Rate BER There are three modes of BER measurements Total BER Errors are averaged over the time of the test The test period begins when the Anal...

Страница 54: ...f the errors occumng during the payload section of the pattern The bit counter is NOT gated by the MUX output due to it s multiple functionality Therefore to calculate the BER over payload or overhead...

Страница 55: ...does a BER eye width measurement The user can select PHASE or BER The BER mode also has an EXTRAPOLATION onloff choice The user should be aware that the eye width will be measured at the current volt...

Страница 56: ...quencies the PB200 will sample around it to determinehow wide the transitionregion is It will then subtract that from the period of the waveform to calculate the eye width The PB200 will tell you that...

Страница 57: ...ors from the errors the 0 s errors can be calculated These rates are available simultaneously The MUX output from the Analyzerpattern generator can be used to gate the All and Ones error counters If A...

Страница 58: ...T Display and soft keys Power switch Pattern Floppy drive GENERATOR OVTPUTS Entry keys Utility Analyzer BNC connectors ENTRY D E F ANALYZER INPUTS 50n 6V MAX Figure2 7 Front Panel PB200 PB200 User Man...

Страница 59: ...he value in parentheses indicates how the value was determined see page A 20 EYE WIDTH gives the value of the eye width measurement or calculation The table of values are the points Al C2 see figure 4...

Страница 60: ...of the characterscan be changed and some items can be made to automatically change to a larger size character when they are being used LEFT DISP CNTL LARGE ERR INJ ON OFF AUTO CLOCWDATA OUT ON OFF Sel...

Страница 61: ...ON or normal until an error occurs then changeto large AUTO Select LARGE ERRORS to make the characters normal OFF large ON or normal until an error occurs then change to large AUTO Select 1 sERROR to...

Страница 62: ...ting YES When FACTORY DEFAULT is selected a window will pop up to ask if you want to reset setting Pressing the FACTORY DEFAULT key again is reset without doing the default setting YES will perform th...

Страница 63: ...the values between the PB200 and the remote device REMOTE COMMAND HEADER I DEBUG MODE I ON ON OFF OFF More Press MORE to view more of the menu selectionsthat are available on the bottom row of the sof...

Страница 64: ...TIMUDATE Monitor Select MONITOR to swap between the front panel LCD and the rear panel video connector This allows the user to connect a VGA CRT for group viewing This selection would be used if an e...

Страница 65: ...attern or stop the generator When stopped the clock is stopped The green LED internal to the key indicates that the Generator is running The PAUSEDUZSUMEkey is used to pause the generator and once pau...

Страница 66: ...bit errors occurs and remains lit until it is cleared by the user PHASE POWER Floppy Drive The PHASE LED is lit when the guaranteed setup or hold time of the PB200 input decision circuit is violated...

Страница 67: ...used to gate the Generatorclock either internal or external The EXT CLOCK DISABLE selection enables ON or disables OFF the signal from that connector This signal is combined with the PAUSE RESUME and...

Страница 68: ...ta output If it is not used and the user is using DATA it should have a 50 Ohm to GND load 50 Ohm terminator is provided I DATA bar NOT DATA is the inverted output of the Generator differential data o...

Страница 69: ...e cord 2 Slide the fuse cover upwards and remove the fuse 3 Install the correct line fuse into the holder 4 Close the fuse cover 5 Plug in the line cord Allow at least two inches of clearancefor the r...

Страница 70: ...in connector supports a VGA CRT interface Serial Port RS 232c A DB 9 pin connector supports the RS 232C interface GPlB connector An IEEE 488 1standard GPlB connector is provided for GPlB communication...

Страница 71: ...f the clock will cause this output to go logic low 5 Analyzer Error Inhibit This is an ECL compatible input with a 50 Ohm to 2V termination resistor When it is high it will disable all error counting...

Страница 72: ...Reference Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 73: ...isplays Description Menus and Displays GeneratorMenus Analyzer Menus Menu M a s for both Tx and Rx PB200 User Manual Beginning on page 3 2 3 3 3 14 3 36 Representative sample of PB200 Applications 3 3...

Страница 74: ...en a key is pressed with a pop up window that key will reverse video to indicate it is active It will remain active until either the escape key is pressed or that key is pressed again If a second soft...

Страница 75: ...NCY value The SINGLE ERROR key is used to inject a single error into the Data Data bar output The SINGLE STEP key is used when the Pattern Generator is STOPPED or PAUSED When pressed the Clock Source...

Страница 76: ...l and the output logic low level offset Selecting OFFSET allows the user to vary the output logic low level The offset is referenced to ground hence an offset of 1 00Vindicates that the logic low of t...

Страница 77: ...ffset is referenced to ground hence an offset of 1 00V indicatesthat the logic low of the data is one volt below ground Selecting DELAY allows the user to vary the data output delay This delay is refe...

Страница 78: ...ront panel BNC labeled EXT CLOCK The EXT CLOCK input 50 Ohm termination voltage and switching threshold can alsobe changed in this menu SelectingEXT REF SOURCEturns OFF or ON the rear panel reference...

Страница 79: ...S10 50 of the data bits are 1 s When MARK DENSITY 118is chosen only 12 5 of the bits will be l s and so on Selecting PREAMBLE turns off or on the PREAMBLE data generation When ON the generator will se...

Страница 80: ...er to load user named pattern file s into pattern memory See Appendix B Diskette file format for diskette file information Note See the Appendix for other information on Loading and Storing Patterns w...

Страница 81: ...LD OVHD MUX SelectingPYLD brings the pattern sync from the PYLD ram to the front panel BNC At the beginning of the PYLD RAM it will output a rising edge Selecting OVHD brings the pattern sync from the...

Страница 82: ...E 7 OFF EXT ERROR FIELD PAYLOAD OVERHEAD ALL SelectERROR INJECT to vary the internal error inject rate from IE 3 to IE 7 to turn internal error inject off or to enable the rear panel EXT error inject...

Страница 83: ...ern is generated CLOCK GAP This is selected to edit the content of the clock gap memory This memory is used to gate ON or OFF the clock source A 1 enables the clock output while a Owdisables the clock...

Страница 84: ...yzereditors DELETE are displayed SelectEXITISAVEto exit the editor and save the changes made SelectQUIT to exit the editor without saving the changes Select INSERT to insert data into the pattern when...

Страница 85: ...range is from 0 to the FILL END OFFSET Select the FILL END OFFSETto set the offset into the pattern where the FILL will end The allowed range is from the FILL STARTOFFSETto the end of the pattern whi...

Страница 86: ...along the bottom edge of the display Eye Width Pressing EYE WIDTH causes the Analyzer to perform an eye width measurement as specifiedunder the EYE WIDTH soft key located on page 2 of the soft key sel...

Страница 87: ...ays be set to the center of the input voltage swingto optimizesystem performance The threshold will automatically be set when enabled in the AUTO SEARCHmode Select CLOCK TERM to change the input termi...

Страница 88: ...ge to be connected to the internal 50 Ohm terminationresistors at the data and data bar inputs Select DESKEW DELAY to change the internal delay that is added to the data input signal path This delay i...

Страница 89: ...r example if a D U T has a propagation delay of loons at a frequency of 200 MHz set the startupdelay to 20 20 5 100nS When the pattem is started the Analyzer will wait 20 clocks then begin loolung at...

Страница 90: ...ting PREAMBLE turns off or on the PREAMBLEdata generation When ON the analyzer will send out the preamble data pattern once before it switches to the selectedpattern The selected pattern could be PRBS...

Страница 91: ...isplay window for the FILENAMEentry Select a FILENAME from the scrollinglist window to initiate a transfer to pattern memory from diskette If there are no patterns of the type specified the scrolling...

Страница 92: ...the scrollinglist the name of the file which contain the configurationto be loaded into the system memory MIXED MODE CONTENT MODE PRES MARK WORD PRBS PRBS7 PRESS PRBSIO PRBSI1 PRBS15 PRES23 PRBS31 MAR...

Страница 93: ...is disabled Set to disable when the Analyzer is using internal clock Set to disablewhen using a differential clock When enabled the Analyzer will set the threshold to the center of the clock voltage s...

Страница 94: ...yzer spendsattempting to synchronize on each pattern It is the time it takes to synchronize on a pattern based on several factors Some of these factors can only be approximated The following is a guid...

Страница 95: ...equency Level 1 2 3 4 5 I 6 7 1 8 EXAMPLE 1 Pattern PRBS15 Sync Thresh 2 5E 1 Frequency 100MHz CS For PRBS 15 there are 2 1 bits 32767 This assumes the worst case of having to slip through the whole p...

Страница 96: ...E6 5 9 seconds MODE allows the user to change the function of the Auto Search feature so that it is optimum for his test environment CONTINUOUS SEARCH When in this mode the Analyzer will repeatedly go...

Страница 97: ...that is so long that it will not synchronize within the time limit of 10seconds using this mode the Generator and Analyzer are restarted synchronously so that the Analyzer only has to compensate for t...

Страница 98: ...ent This shouldbe low to minimize the time to do a BER eye width but high enough to give the user confidence in the measurement Typically if the BER eye measurementis for 1E 7 then the sampleswould be...

Страница 99: ...TRAPOLATED EYE WIDTH C2 C1 Select RESULTS to view the eve width results Status indicates whether the Analyzer was able to measure or calculate the eye width The value in parentheses indicates how the...

Страница 100: ...mingdata pattern Selectinga high error rate 2 5E 1 will allow error rates up to 25 before the Analyzer slips its internal generator in an attempt to synchronizewith the received data Selectinga lower...

Страница 101: ...OVHD PREAMBLE This is selected to edit the content of the PREAMBLE This is a pattern that is sent out once before the main pattern is generated SelectBIT ORDER to chose the order of transmission of th...

Страница 102: ...f the pattern Entries are made via the knob or keypad Select EDlT to swap between editors when both the generator and analyzer editors are displayed SelectEXIT SAVEto exit the editor and save the chan...

Страница 103: ...ning of the pattern The allowed range is from 0 to the end of the pattern which is 1 less than the length SelectFILL BYTE to set the Hexadecimal BYTE used for the FILL function Select the FILL START O...

Страница 104: ...will appear when this key is pushed Push the ENTER key to display the available patterns to copy to the Analyzer PAYLOAD OVERHEAD MUX PREAMBLE Use the upldown keys to select which pattern to copy Pus...

Страница 105: ...times allowed range from 1second 00 OO Ol to nearly 24 hours 235959 Select BIT LENGTH to changethe sliding window length for the mode of BITS The window length can range from le08 to le16 The corresp...

Страница 106: ...TEST LEN and then stop unless manually stopped Using REPEAT mode the TIMED test will restart afterthe automatic end until it is finally manually stopped Using the UNTIMED mode the test will run indef...

Страница 107: ...se results will show the data from the currently running test Otherwise the results displayed will be from the previously run test If no test has been run since the unit has been turned on nothing wil...

Страница 108: ...ock Threshold Clock Term Clock Source Data lnput Data Input Data Threshold Data Term lnput Delay Data Polarity Startup Delay Data Pattern Mode PRBS Preamble Start Mode Load Pattern Store Pattern Recal...

Страница 109: ...system s idle time slot At the left you see a ground station in communicationwith a space vehicle Companies are using the PB200in their lab to simulateup and down link communications and to replace t...

Страница 110: ...synchronize to the incoming PRBS test pattern Bit Error Rate BER measurements will be performed on both good fault free and bad used injected faults data streams As a general rule terminate unused out...

Страница 111: ...r n data output Power up the unit Press the UTILITY key near power switch This will bring up the UTILITY menu Press the soft key FACTORY DEFAULT Press the ENTER key below the lolob Press the down arro...

Страница 112: ...soft key DATA PATTERN when complete This will remove the menu 4 SetupAnalyzer for PRBS 7 mode On the ANALYZER window press the soft key DATA PATTERN Setup the generator for PRBS transmission with PRBS...

Страница 113: ...free operation of the unit You should notice the SYNC active SYNC LED ON no Errors and Analyzer frequency measurement accurate to within 5 CLOCK INPUT STOP and then START unit Again check for error fr...

Страница 114: ...r than 0 The Error History BIT LED will illuminate Either the 1 s or the 0 s error display will also have counted the injected error this depends on whether the error was injected on an outgoing one o...

Страница 115: ...s will be performed on good and bad used injected faults data streams Difficulties synchronizingthe mixed mode pattern are expected and adjustments to error mode sync threshold will be made As a gener...

Страница 116: ...irtual Circuits VC MPEG packets are small in size 188 bytes They were was designed to facilitate error concealment to do this packets should be small and to be compatible with ATM 188 4 47 where 47 wa...

Страница 117: ...AdaptationFields C 186 bytes b header payload adaptation discmtinuity random access optimal stuffing g s fieldlellgth indicata indicator fields we indido 7 splice countdown data field ertemian MPEG 2...

Страница 118: ...Memory 2 to represent the overhead The third memory or mux memory controls the selectionof bits from either Mem 1or Mem 2 to form the desired output sequence A simplified view of the PB200 pattern mem...

Страница 119: ...xample we would require 1byte of overhead and 187bytes of payload Because the minimum size for overhead memory in the PB200 is 2 bytes we would fill the overhead memory with two bytes of hex 47 The st...

Страница 120: ...0000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 000000...

Страница 121: ...MODE MIXED PRBS PRBS 7 MARK DENSITY MARK RATIO 1 R PRE AMBLE OFF STARTMODE STOP LOAD PATTERN STORE PATTERN RECALL PATTERN MIXED MODE CONTENTS c this value is not for mixed mode see below menu e ident...

Страница 122: ...d a pop up menu will appear Setup the popup menu as follows ANALYZER DATA PATTERN PAYLOAD NOTE MIXED MODE CONTENTS only affect MIXED MODE data pattems MODE PRBS PRBS PRBS 15 MARK MARK RATIO 112 DENSIT...

Страница 123: ...pop up menu will be displayed MPEG2 V2 c names of allfilesonfloppy filename2 filename3 lename4 After loading the final pop up menu will be displayed as follows RECALL PATTERN FILETYPE ALL FILENAME MPE...

Страница 124: ...08 1 S ERRORS 0 O OOE 08 O S ERRORS 0 10 00E 08 SEARCH ANALYZER CLOCK FREQ 205 000 MHz CLK INPUT O 00V I GND I DATAINPUT o oov 1 GND 1 0 000nS SLIP CTRL 8 Check for Error Free Operation DATAP A P MIXE...

Страница 125: ...zer On the ANALYZER window press the soft key CLOCK INPUT to remove the menu Check for error free operation of the unit You should notice the SYNC active no Errors and Analyzer frequency measurement a...

Страница 126: ...Applications PB200 User Manual Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 127: ...Appendices Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 128: ...the PB200 9 PRBS Patternswith the PB200 15 Diskette File Format 16 PatternEditor Requirements and Features 19 Default Factory Settings 29 Reports 34 CleaningInstructions 37 Glossary 38 Index 41 PB200...

Страница 129: ...eamble IO l Kbit Mixed Mode Frame 256 Kbit max 8 bit resolution Error Injection Error Field Select Error Rates Data and Clock Outputs Single Rate External TI L Overhead Payloador Both Error Rate of lo...

Страница 130: ...field Overhead Payload or Frequency PropagationDelay Up to 128 Kbit I 1 Hz to 200 Hz Eye Width I up to 32 n I Reference Data Patterns Identical to Pattern Generator but independent Input I BNC I Star...

Страница 131: ...was demonstrated to the following specification as listed in the Official Journal of the EuropeanCommunities Low Voltage Directive 73 23 EEC EN61010 11Al Safety Requirementsfor Electrical Equipmentfor...

Страница 132: ...nternal Clock frequency to 100MHz 2 Set the Generator to PRBS7 3 Set the Generator Data and Clock outputs to AMPLITUDE 50V OFFSET 2 00V 4 Press the STARTISTOP key to START the unit LED on 5 Connect th...

Страница 133: ...GeneratorClock Frequency 1 Connect the PB200 Clock output to the Frequency counter 2 Verify that the measured frequency is within the limits listed Analyzer Frequency Measurementhternal Clock 1 Select...

Страница 134: ...rror free Press the PAUSEIRESUME key to pause the unit Verify that the unit pauses without errors Press the PAUSE RESUMEkey to resume Verify that the unit resumes without errors Select each of the PRB...

Страница 135: ...ta inputs of the Analyzer 5 Press the STARTISTOPkey to start the unit 6 Verify the unit runs error free Error Inject Rate Test 1 Select each of the Generator error injectrates Note After you select an...

Страница 136: ...yld pat gen oh pat gen mux pat gen pre pat gen gap pat Analyzer Mux Analyzer Preamble The default method will only load correctly formattedpatterns with the unique filename and the pat file extensions...

Страница 137: ...ult file names c Storepatterns using enhanced file names Load patterns using enhanced file names Analyzer Data Pattern Menu Options Data Pattern Mode Mixed PRBS PRBS7 Mark Density Mark Ration 112 Pre...

Страница 138: ...le Name field Use the arrow keys to move the cursor and rotary entry knob to select the desired characters When the file name is correct move the cursor to the File Type line and press Enter The follo...

Страница 139: ...correctprefix Press Enter again and the floppy disk will be search for any files that match the default file naming convention If correctfiles are located they will be loaded and the followingpop up...

Страница 140: ...type of pattern file or ALL user defined file name File Type 1Overhead Payload IMUX 1Gap Generator only select ALL to store ALL patterns Scroll down the file type list using the Arrow keys and press E...

Страница 141: ...follows RecallPattern File Type ALL File Name MPEG2 Pattern Load Status Payload Complete Overhead Complete MUX Complete Pre amble Complete Clock gap Complete c type of pattern file or ALL c user defi...

Страница 142: ...oduced The table below taken from ITU Specification0 150 lists several different types of PRBS test patterns Some of the recommended test patterns use non inverted signals PRBS 9 11 23 some use invert...

Страница 143: ...Logic Inc Pattern Trigger pattern DEC ASCII File Format Each ASCII pattern file should have a PAT1 file extension There are six permitted pattern files GEN OH PAT GEN MUX PAT HEX GEN PYLD PAT AN OH PA...

Страница 144: ...le MUST end on its last line as shown by the eof symbol in the above example Note that the following format is not currently permitted even though it might seem to be the natural way to format the ASC...

Страница 145: ...oppy diskette has been inserted Check for correctly formatted pattern files on the floppy PATTERN WRITE ERROR Problem Unable to write a pattern to the diskette Solutions Ensure a floppy diskette has b...

Страница 146: ...gram Manager group 6 The README document is this document 7 The installation is complete What i s MLPE MLPE is a specializedpattern editor that can be used with Tektronix gigaBERT700 1400series and pa...

Страница 147: ...allow working on several files at once The editor runs under Microsoft Windows with full Windows printing capability Extensive built in help Data can be uploaded to a gB7001140011600Tx or Rx via RS 23...

Страница 148: ...normally without any errors but the program fails to run properly check the following If you are using Norton Desktop 3 0 in the Tektronix program group select single mouse click the Pattern Editor i...

Страница 149: ...are using the Editor with a gigaBERT700 1400 1600and want to use RS 232 to Upload or Download patterns your RS 232 cable should be wired as shown below gigaBERT RS 232 pin number 25 pin Cornm Port 9...

Страница 150: ...being sent If you should have a problem sending a pattern to a gigaBERT or receiving a pattern from a gigaBERT there may be a problem with the identification string that is stored in the gigaBERT Ple...

Страница 151: ...and all of its entries 2 Save the configuration 3 Open File Manager 4 Delete the following The MLPE directory and PATTERNS sub directory and all entries in each Delete the MLPE IN1file in the WINDOWS...

Страница 152: ...nnot agree to the license terms promptly return the unopenedpackage to Microwave Logic for a full refund Contact the nearest Microwave Logic FieldOffice for return assistance Copyright1995 Microwave L...

Страница 153: ...rogram under a nontransferable license on a single specified machine b Copy the Programfor archival or backup purposes providedthat no more than one 1 such copy is permittedto exist at any one time Ea...

Страница 154: ...ctive upon acceptanceby Customer and shall remain in effect until terminated as provided herein The License may be terminated by Customer at any time upon written notice to Microwave Logic The license...

Страница 155: ...OF SUCH DAMAGES THIRD PARTY DISCLAIMER Except as expressly agreed otherwise third parties from whom Microwave Logic may have obtained a licensing right do not warrant the program do not assume any lia...

Страница 156: ...rformed from the front panel OUTPUT SIGNAL Clock Frequency ExternalClock Ext Clock Termination Ext Clock Threshold External Reference Clock Amplitude Clock Offset Data Amplitude Data Offset Output Del...

Страница 157: ...rt Pattern Mode PRBS Pattern MARK Ratio Pattern Pre Amble Payload Mode Payload PRBS Pattern Payload MARK Ratio INF UT SIGNAL Clock Input Clock Termination Clock Threshold Clock Source Data Input Data...

Страница 158: ...ror ENABLE ALL 1 2 5E 1 ON OFF OFF ON ON SLIDING WINDOW Window Mode BITS Window Time Length 0o oO 10 Window Bit Length 1E 09 End of Window Report OFF Data Display Mode TOTALIZE TEST CONTROL Test State...

Страница 159: ...th State Eye Width Mode Eye Width Sample Size Eye Width Threshold 1 Eye Width Extrapolation Eye Width Threshold 2 Eye Width Threshold 3 MISCELLANEOUS Display Contrast Monitor Remote Debug Mode DISABLE...

Страница 160: ...Rate 9600 Parity EVEN CharacterSize 7 Stop Bits 1 EOL CR LF XONKOFF OFF Echo ON PB200 User Manual GPIB RSTdoes not affect Address GPIB Terminator GPIB Bus Control Remote Header Artisan Technology Gro...

Страница 161: ...f Window report are based on a sliding interval T where T is set in terms of bits or time Use the REPORT parameter in the SLIDING WINDOW menu to enable or disable these reports An example of the End o...

Страница 162: ...ble or disable End of Testreports An example End of Test report is shown below packetBERT 200 TEST SUMMARY 1995 11 05 12 11 56 TEST MODE TIMED ERROR MODE ALL ERROR THRES 1E 06 DATE TIME ALARMS START 1...

Страница 163: ...nded for unattended operation sincethese reports can generate a lot of paper An example On Error report is shown below packetBERT 200 TESTRESULTS 1995 11 05 12 25 15 TEST MODE TIMED RROR MODE ALL ERRO...

Страница 164: ...brush A brush is especially useful for removing dust from around the buttons and connectors Remove hardened dirt with a soft cloth dampened with a mild detergent and water solution Do not use abrasiv...

Страница 165: ...ontinuousfrequency spectrum The range of frequencies handled by a device or system BER An acronym for Bit Error Ratio or Rate The principal measure of quality of a digital transmission system BER is d...

Страница 166: ...rocedures such as communication with other devices Error Detection Checking for errors in data transmission A calculation is made on the data being sent and the results are sent along with it The rece...

Страница 167: ...tempts at correction are made RS 232C A physical layer interface standard for the interconnectionof equipment Rx Receiver An abbreviation for Receiver A detector and electronic circuitry to change opt...

Страница 168: ...Mode Patterns 3 43 Satellite Test Simulation 3 37 Auto Search function 2 15 B BER Eye Width Measurement 2 18 BER Mode 2 19 BERT Technology 2 2 BNCs Rear Panel 2 34 C Cleaning Instructions Appendix 37...

Страница 169: ...es of Pattern and Setup Files 1 19 Power OnlDefault 1 10 Setup for Mixed Mode Operation 1 15 Terminate Unused Generator Outputs 1 11 Floppy Drive 2 29 Frequency 2 16 G Gap Clock 1 8 Generator Soft Key...

Страница 170: ...cations PB200 Appendix 2 Sync Operation with Straight PRBS data Example of 2 12 SynchronizationNot Required 2 15 Synchronization 2 14 Synchronization Startup and Propagation Delay 2 10 Synchronizeto a...

Страница 171: ...PB200 User Manual Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 172: ...uipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentat...

Результаты поиска

Содержание packetBERT 200

Отзывы:

Похожие инструкции для packetBERT 200

Бренды по названию

Популярные бренды

Tektronix packetBERT 200, Руководство пользователя

Результаты поиска

Содержание packetBERT 200

Отзывы:

Похожие инструкции для packetBERT 200

Бренды по названию

Популярные бренды