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User Manual Model 12010/20

1. Description Queries the questionable condition register This register is not used the query always returns 0 Example STAT QUES COND Query the questionable condition register STAT QUES ENAB STATus QUEStionable ENABle Parameters None Default N A Query STAT QUES ENAB Description Programs questionable enable mask This register is not used the command form does nothing the query always returns 0 Example STAT QUES ENAB Query the questionable enable mask STAT QUES EVEN STATus QUEStionable EVENt Parameters None Default N A Query STAT QUES EVEN Description Queries the questionable event register This register is not used the query always returns 0 Example STAT QUES Query the questionable event register SYST ERR NEXT SYSTem ERRor NEXT Parameters None Default N A Query SYST ERR NEXT Description Queries the system error queue Returns an integer representing the error num ber and a string in double quotes containing the error description The integer and string are separated by a comma The error queue may have multiple items that can be retrieved using multiple queries If the queue is empty the response will be 0 No error Example SYST ERR Query the error queue SYST VERS SYSTem VERSion Parameters None Default N A Query SYST VERS Description Queries the
2. Start address The numeric bit number in pattern data memory of the first bit to write The remainder follows consecutively Bit count The number of bits to write into pattern data memory Data An arbitrary block of program data as defined in IEEE Standard 488 2 1992 section 7 7 6 2 This data begins with a number symbol and is followed by a single digit that represents the number of characters in the length then one to five characters specifying the length as a decimal number then lastly the program data Default The first bit is 1 all other bits are 0 Query DIG 1 2 PATT HDAT Description Use this command to program the pattern data memory using hexadecimal format Each byte of pattern data is a hexadecimal character 0 to 9 A to F or a to f representing four bits of pattern data The value start address gt bit count must be less than or equal to 16 777 217 The bit count can be any number 1 to 65 536 The entire pattern data memory is accessible for reading or writing even that outside the range of the current pattern length setting The bit count parameter must be equal to four times the length of the data block or up to three bits fewer If it is fewer then the extra bits in the last data byte are ignored by the instrument start address gt bit count must be less than or equal to 16 777 217 Examples DIG1 PATT HDAT 1 16 144152 This command Starts loading the data bit into location 1
3. Pulse Mode Ch 1 Ampl 1 00 Vpp Trigger Manual Of ome Channel HiLvl Lolvi More HiLvl High Level LoLvl Low Level PS e o o O o Soft Keys 6 Pulse Mode Press More key to Ch 1 Ampl display more VOLTS 1 00 Vpp menu options Pol Polarity Trigger Manual TermV Terminal Voltage Channel Pol TermV More e Q Q e e O lt Press More to wrap back to first group of VOLTS options OPS 3190027 Rev 0 December 2008 Return to Section Topics 2 5 Section 2 Setup and Pulse Generation Settings Models 12010 and 12020 Pulse Pattern Generator User s Manual 2 6 To edit parameter values and settings 1 2 3 Select a menu VOLTS for example The menu keys are located next to the keypad Press the soft key of the parameter to be changed Use the More key to display additional options The parameter value or setting is displayed on the right side of the display Change a parameter value or setting as follows Parameter value If the parameter is a value it can be changed using the navigation wheel or the keypad Navigation wheel Rotating the wheel increments or decrements the value Keypad When typing in a value the available ranges mV or V for example for the value will appear at the bottom of the display After entering in the value press a soft key to select the range CURSOR keys Press to increment or decrement values Parameter setting For a parameter setting options may appe
4. 1 Before plugging in the power cord ensure the Model 12010 12020 is turned off and the rear panel power switch is in the off 0 position 2 Connect the female end of the supplied power cord to the AC receptacle on the rear panel and move the rear panel power switch to the on 1 position WARNING The power cord supplied with the Model 12010 12020 contains a separate ground for use with grounded outlets When proper connections are made the instrument chassis is connected to power line ground through the ground wire in the power cord Failure to use a grounded outlet may result in personal injury or death due to electric shock 3 Power up the instrument by pressing the front panel on off button Line fuse replacement Two line fuses are located in a drawer in the Power Module above the AC receptacle refer to Figure 1 2 After turning the power switch off and removing the line cord remove and inspect the fuses and replace damaged fuses with this specific type only Fuse type 2 A 250 V slow blow 5 mm x 20 mm Ventilation The Model 12010 12020 has a fan and cooling vents in the rear and side panels to keep it from overheating CAUTION Observe the following precautions to maintain proper ventilation Do not block the cooling vents Do not position any devices adjacent to the instrument that force air heated or unheated into or onto the instrument s surfaces or cooling vents This additional airflow could compromise accura
5. 12020 boots correctly WAI Wait until all pending actions are complete 1 Commands with numerics enclosed in angle brackets lt gt indicate parameter ranges for those commands Commands without angle brackets have no parameters 2 Does not clear front panel errors only remote programming errors Error messages will continue to be displayed until you press HELP or any other key 3 Models 12010 and 12020 use sequential commands One command must finish before the next one starts Table 4 4 Command examples Command Description ESE 4 Set Standard Event Status Register mask to decimal 4 RCL 5 Recall instrument setting 5 from memory SAV 2 Save complete instrument setting to memory location 2 SRE 8 Set Service Request Enable Mask to decimal 8 4 8 Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 4 Remote Programming SCPI command reference Command summary SCPI commands are summarized by subsystem in Table 4 5 General notes Brackets are used to denote optional character sets Do not use brackets in the program message Angle brackets are used to indicate parameter type Do not use angle brackets in the program message Uppercase characters indicate the short form version for each command word Default Listed parameters are the RST defaults unless noted otherwise The
6. Description Example IMODe Parameters Default Query Description Example PM HOLD Parameters Default Query Description Example PM INT1 Parameters Default Query Description Example Section 4 Remote Programming Use this command to program the internal clock frequency This command also selects the internal clock as the time base if it is not already selected A query returns the last known clock frequency If the clock source is INTernal it will be up to date If the clock source is Clock In the last measured frequency of Clock In is returned Or if no measurement has been made the last internal setting will be returned FREO 1 2GHz Set clock frequency to 1 2 GHz SOURce IMODe PULSe PATTern BURSt EWIDth PULS IMOD Use this command to program the high level instrument operating mode Other parameters will be relevant based on the selected mode EWIDth means External WIDth IMOD PATT Set instrument to pattern mode SOURce PM HOLD Ul TIME UI PM HOLD Use this command to program the jitter hold setting This setting applies to all jitter amplitude parameters for both channels In UI hold if the frequency is changed the jitter amplitudes are held to a constant UI value In TIME hold if the frequency is changed the jitter amplitudes are held to a constant time value PM HOLD UI Set jitter hold to UI SOURce PM INTernal1 DE Viation Numeri
7. TIME Channel 12010 2 and 12020 2 only Select channel Freq Frequency Set the clock frequency Hz Per Period Set the clock period s Width Width Set the duration of the pulse s Delay Delay Set the delay period between trigger and output s DutyCyc Duty Cycle Set the duty cycle not applicable in NRZ data format CrossPt Cross Point Set the cross point only applicable in NRZ data format SSC Spread Spectrum Clocking Enable or Disable set frequency or amplitude Hold Hold Set width or duty cycle constant when frequency changes JITTER Sin Sine Select sinusoidal jitter insertion Det Deterministic Select deterministic jitter insertion Ran Random Select random jitter insertion Ext External Delay Enable or Disable external delay Hold Hold Select UI or Sec seconds as the hold parameter UTILITY Clkin Clock Input Configure clock input Termination ClkIn Term AC or DC slope ClkIn Slope Pos or Neg and termination voltage Clkln TermV 2V to 3 V 2 14 Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Table 2 4 cont Menu summary Menu Key Menu Item Description ExtIn External Input Configure external input Threshold Extln Threshold 2 V to 3 V slope Extln Slope Pos or Neg and termination voltage Extln TermV 2V to 3 V ClkSrc Clock Source Select Internal or Cikin RefOsc Referenc
8. DISP CONT 7 Set contrast to 7 MEAS FREQ MEASure FREQuency Parameters None Default N A Query MEAS FREQ Description Use this to query the frequency at the Clk In connector Execution of this command will also cause the generator to update the frequency parameter and any coupled parameters If the signal at the Clk In connector is out of range the returned value will be zero and the frequency parameter will not be updated Example MEAS FREQ Measure the frequency at the Clk In connector OUTP SOUR OUTPut 0 SOURce Parameters PERiodic BITStream Default PERiodic Query OUTP SOUR Description Use this command to program the trigger out event e PERiodic A trigger pulse will be output for each pulse or data burst clock period BlTStream A trigger pulse will be output for each complete pattern or burst For PRBS patterns a trigger is output for every eighth cycle of the PRBS Example OUTP0 SOUR BITS Set the trigger out event to bitstream OUTP OUTPut 1 2 STATe Parameters ON OFF Default OFF Query OUTP 112 Description Use this command to program the enable disable status of the Channel 1 and 2 outputs Example OUTP1 ON Enable Channel 1 output SENSe subsystem SENS ROSC SOUR SENSe ROSCillator SOURce Parameters INTernal EXTernal OPS 3190027 Rev 0 December 2008 Return to Section Topics 4 19 Section 4 Remote Programming 4 20 Default Query Descripti
9. Pattern or Burst Menu UTILITY Cikin Sets the coupling for the ClkIn signal The clock input may be set to AC or DC TermV has an effect only when DC Termination is selected See Figure 3 8 Term settings AC or DC Figure 3 8 Clock Input schematic Ho Ohms ClkIn DC TermV V TermV Cikin Termination Voltage Operating Mode Pulse Pattern or Burst Menu UTILITY Cikin The external clock input can be set to correctly terminate a signal that requires a non zero termination voltage For example ECL logic is often terminated through 50 ohms to 2 V This parameter has an effect only when the termination setting is DC See Figure 3 8 TermV settings 2V to 3V TermV Extln Termination Voltage Operating Mode Pulse Pattern or Burst Menu UTILITY Extln A signal at the Ext In connector is terminated through 50 ohms to a zero or non zero termination voltage in the range from 2 V to 3 V See Figure 3 9 TermV settings 2V to 3V Figure 3 9 External Input schematic Extin 50 Ohms TermV Threshold 4 3 24 Return to Section Topics OPS 3190027 Rev 0 December 2008 Section 3 Pulse Pattern Generators Operation Models 12010 and 12020 Pulse Pattern Generator User s Manual TermV Output Termination Voltage Operating Mode Pulse Pattern or Burst Menu VOLTS The amplitude of the 12010 12020 does not change when this parameter is altered The display changes to show the correct HiLv
10. SSC Enable tren tenete Ee NeEN 3 18 Section 3 Pulse Pattern Generators Operation 3 2 DENE Mm 3 18 Freq Deterministic Jitter Frequenoy esee 3 19 Freq Sine Jitter Frequency EEN 3 19 Pred SOC E aniei isesi iun iee rest enter tek ces 3 19 Func Deterministic Jitter Function eeeeeeeeeeeeee 3 19 GPIBAdd GPIB Address 3 19 PLS Br EE 3 20 des UN gcc Em 3 20 Hold Hold Duty Cycle or Wich 3 20 InstSave Instrument Save Recall A 3 20 Oort VO Port interface 3 20 Eg D 3 21 Loly Low Level E 3 21 COTE BST EE 3 21 CULE VERE Trigger Out Brent sciis sirsa ian ee 3 21 PattSave Pattern Save Recall esses 3 22 el 05 E ER 3 22 Pok Polary e P 3 22 PRBSLen Pseudo Random Bit Sequence Length 3 23 RefOsc Reference Oecllator AAA 3 23 Slope Cikin E 3 23 cler c cedi HT 3 23 Source Tigger SONG ero nete ttt te nine bent 3 23 Term Cikin Termination i a eere rennen eene 3 24 TermV ClkIn Termination Voltage eene 3 24 TermV Extln Termination Voltage eene 3 24 TermV Output Termination Voltage AA 3 25 Di Mold 3 25 Type Patten TUB eet Na AABANG 3 25 Type Trigger Type retenir tnr etnies 3 25 2j po MEE 3 26 Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Genera
11. Save up to nine pulse pattern generator setups in nonvolatile memory EEE 488 GPIB and USB 2 0 interfaces e 2RU Rack Unit height full rack design Model number descriptions Table 1 1 Model number descriptions Model Num Single Dual Jitter ber Frequency Output Range Channel Channel Insertion 12010 1 15 MHz to 800 MHz X 12010 1 J 15 MHz to 800 MHz X X 12010 2 15 MHz to 800 MHz X 12010 2 J 15 MHz to 800 MHz X X 12020 1 15 MHz to 1 6 GHz X 12020 1 J 15 MHz to 1 6 GHz X X 12020 2 15 MHz to 1 6 GHz X 12020 2 J 15 MHz to 1 6 GHz X X OPS 3190027 Rev 0 December 2008 Return to Section Topics 1 3 Section 1 Getting Started Models 12010 and 12020 Pulse Pattern Generator User s Manual Front and rear panel familiarization 1 4 Front panel LCD display 2 On off Switch The front panel of the Model 12020 2 is shown in Figure 1 1 The front panel controls and connectors for the Model 12020 1 are similar except there is only one channel For the Model 12020 1 disregard all references to the second channel Figure 1 1 Front panel Model 12020 2 shown Channel 1 Channel 2 Selected an ie ar ea Navigation wheel Numeric keypad Menu keys Output enable a e 5 A Picosecont d Model 12020 1 6 GHz Pulse Pattern Generator Freq Y 165 0 MHz Per 6 06 ns Pulse Mode Ch 1 Width 3 04 ns Trigger Manual Channel Freq Delay More Clock Channel 2 Cursor ipu delay Pulse patter
12. Threshold ERM EE 3 25 Typo Paten TDO EE Jha baa 3 25 Type moger TYPE EE 3 25 lup ER 3 26 OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual 4 Remote Programming essen 4 1 MOGUO M T ree 4 2 PRU WS TS T 4 2 Selecting an Interface 4 2 IEE E 483 gg c 4 2 USB GT AGS aa ores E bre ease dan 4 4 ccu Tuc EEE E N T 4 5 Saue ease BENG EE 4 6 Status byte and service request GO 4 6 Standard Event Status Register AAA 4 7 Operation Status Qro P n a AGA aa 4 7 Questionable Status group La a AA AA 4 7 Service request programming example sese 4 7 omina COR 0 EE 4 8 Command Eug scissile elds 4 8 SCPI command HOTT RINGS a aaa E 4 9 Comrad dumme EE 4 9 Command descrlptiofis eei tere eere inni 4 13 OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual This page left blank intentionally OPS 3190027 Rev 0 December 2008 List of Figures Figure 1 1 Front panel Model 12020 2 SHOWN eese 1 4 aU t2 Fod panal e 1 5 Figure 2 1 Out 1 and Out 2 connections La aaa 2 2 Figure 2 2 Trig Out connections ua GAGANA 2 3 Pau BIN EE 2 3 Figure 2 4 Delay In connections 1a 2 4 Figure 2 5 Cik in GONG creare edente est tii th sunni 2 4 Figure 2 6 Ref Out and Ref In connecthons A 2 5 Figure 2 7 LCD display and soft
13. block gt HDATa lt numeric gt 1000 Set query pattern data in hexadecimal 4 17 lt numeric gt character format lt abitrary block gt SIGNal CROSsover VALue numeric 5096 Set query NRZ crossing point 4 17 FORMat RZ NRZ R1 NRZ Set query pattern format 4 18 DISPlay DISPlay subsystem BRIGhtness lt numeric gt 8 Set query display brightness 4 18 CONTrast lt numeric gt 6 Set query display contrast 4 18 MEASure MEASurement subsystem FREQuency none n a Query frequency applied to Clock In 4 19 connector OUTPut 0 OUTPut subsystem SOURce PERiodic PER Set query trigger out event 4 19 BITStream QUTPUU 1 2 STATe OFF ON OFF Set query channel output 4 19 enable disable status SENSe SENSe subsystem ROSCillator SOURce INTernal INT Set query 10 MHz reference source 4 19 EXTernal SOURce SOURce subsystem FM INTernal DEViation lt numeric gt 1 Set query SSC amplitude 4 20 FREQuency numeric 33 kHz Set query SSC frequency 4 20 STATe ON OFF OFF Set query enable disable status of 4 20 Spread Spectrum Clocking FREQuency CW FIXed numeric 15 MHz Set query clock frequency 4 20 IMODe PULSe PULS Set query instrument mode 4 21 PATTern BURSt EWIDth PM HOLD UI TIME Ul Set query jitter hold 4 21 INTernall Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 4 Remote Progr
14. lt numeric gt OV Set query CLK IN termination voltage 4 30 STATe AC DC AC Set query CLK IN termination type 4 30 Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 4 Remote Programming Command descriptions ARM LEV ARM SEQuence LAYer LEVel Parameters Numeric Suffix V with engineering prefixes Default 100 mV Query ARM LEV Description Use this command to program the Ext In threshold voltage Example ARM LEV 1 5V Set Ext In threshold voltage to 1 5 V ARM SENS ARM SEQuence LAYer SENSe Parameters EDGE LEVel Default EDGE Query ARM SENS Description Use this command to select trigger type by choosing whether the instrument arms on the edge s or level of the arming signal Example ARM SENS LEV Set the trigger type to level ARM SLOP ARM SEQuence LAYer SLOPe Parameters POSitive NEGative POSitive Ext In responds to the rising edge NEGative Ext In responds to the falling edge Default POS Query ARM SLOP Description Use this command to select the trigger slope for the arming signal when triggering on edges If you are arming on levels use this command to select whether the instrument triggers during the positive or negative cycle of the arming signal Example ARM SLOP NEG Signal is generated on the falling edge ARM SOUR ARM SEQ
15. 2 16 Pulse Pattern Generators Operation eseseeeseeeeeerrerre reesen 3 1 Pulse Pattern Burst External Width operation sess 3 3 UES RIG C 3 4 SME Ge EET 3 6 PN MAE EE 3 7 SEE Ge ee AA 3 9 Saving and recalling instrument Setups sese 3 10 critici M 3 10 Recalling E SOLID SN 3 10 Returning to default settings rrrnnnnrnnnnnnnnnvnnrnnnnnvnnrnnnnnvnnnnnnnnnvnnnnn 3 10 Saving and recalling patterns isvann 3 11 Saving a paaa a Pm 3 11 nir EN NAGA AA AA T 3 11 Pulse pattern parameters 1 ennemis 3 12 A s Deterministic Jitter Amplitude oer 3 13 A Ul Deterministic Jitter Amplitude UI 3 13 Models 12010 and 12020 Pulse Pattern Generator User s Manual A s Random Jitter Amplitude sec sese 3 13 A UI Random Jitter Amplitude UI 3 13 A s Sine Jitter Amplitude eer 3 14 A UI Sine Jitter Amplitude UI 3 14 ow HEP uiii m 3 15 Ampl SoC AMPS iacuit trt eene tee retten seat 3 15 AutaGorr Auto Correct onc aa 3 15 jp ETE EE EE SE 3 15 ker Burst PONG AA AER aiaa 3 16 CH1BstCnt Channel 1 Burst Count sssssssesssseeessresssererenssrensseessens 3 16 CH2BstCnt Channel 2 Burst Gount z ee eeemmmisesee 3 16 CH1Fmt Channel 1 Format escena nnn nnn 3 16 CH2Fmt Channel 2 POTTIBL ieeii esiti nent ica tante nnne enne ie 3 16 siu
16. 2 only A green indicator lights up to show that the channel is enabled The enabled pulse output is triggered output sequence started according to the trigger configuration 7 When finished disable the output s by again pressing the CH1 ENABLE and CH2 ENABLE Model 12010 2 and 12020 2 keys The green indicator light s turns off External Width mode In External Width mode the rising and falling edges of an external trigger connected to the Ext In connector control the output 1 Select the ExtWidth mode as presented in Figure 3 1 2 Time parameters for width frequency period and delay are determined by the external trigger signal and are not programmable 3 Triggering configuration is determined by the Ext Input and is not programmable 4 Enable pulse output by pressing the channel enable key s located next to the BNC output connector s CH1 Enable and CH2 Enable 12010 2 and 12020 2 only A green indicator lights up to show that the channel is enabled 5 When finished disable the output s by again pressing the CH1 ENABLE and CH2 ENABLE Model 12010 2 and 12020 2 keys The green indicator light s turns off OPS 3190027 Rev 0 December 2008 Return to Section Topics 3 9 Section 3 Pulse Pattern Generators Operation Models 12010 and 12020 Pulse Pattern Generator User s Manual Saving and recalling instrument setups The Model 12010 12020 can save up to nine setups in non volatile memory In general all the paramete
17. 3 10 Returning to default settings eese 3 10 Saving and recalling patterns seen 3 11 Ba A pahe TE 3 11 IEN E E 3 11 Pulse pattern parameters eese nennen 3 12 A s Deterministic Jitter Amplitude sec 3 13 A UI Deterministic Jitter Amplitude Ul 3 13 A s Deterministic Jitter Amplitude sec 3 13 A UI Random Jitter Amplitude Ul essss 3 13 A s Sine Jitter Amplitude ser 3 14 A UI Sine Jitter Amplitude Ul esee 3 14 Ampl Amplitude irsin iarsna inansa 3 15 Ampl SSC Amplitude esee 3 15 AutoCor Auto Gores iq 3 15 6 MI 3 15 BstPer Burst e E 3 16 CH1BstCnt Channel 1 Burst Count sese 3 16 CH2BstCnt Channel 2 Burst Count sse 3 16 CHIFmt Channel 1 Formal sue ees 3 16 CH2Fmt Channel 2 Formet eene rne 3 16 0 MERE 3 16 CrossPi Gross PONE MEM 3 16 Gn icq Clock SOUE m 3 17 Dc c E 3 17 p E M 3 17 DutyGyc Duty Cy dle aaa 3 17 I m PES 3 17 Enable Deterministic Jitter Enable esses 3 18 Enable Random Jitter Enable eese 3 18 Enable Sine Jitter Enable s esee 3 18 Enable
18. Input Ref In connector of another In any multi unit system the unit with the most accurate clock reference is typically used as the governing unit When multiple units share the same internal clock reference the frequencies of all of the units are synchronized Figure 2 6 shows two Model 12010 12020 instruments connected together so that the second unit can use the internal clock reference of the first unit In this configuration example all but one Model 12010 12020 must be set for RefOsc External under the Utility menu 2 4 Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 2 Setup and Pulse Generation Settings Figure 2 6 Ref Out and Ref In connections Ref Out BNC Cable Editing parameter values and settings Display The Model 12010 12020 has an LCD display to view and set the various pulse pattern parameters Each menu has its own set of parameters that are selected using the soft keys under each command For example Figure 2 7 shows display items for the VOLTS menu As shown pressing the More soft key displays all options for the VOLTS menu All of the menus are summarized in Table 2 4 For the Models 12010 2 and 12020 2 pressing the Channel soft key switches between the two channels to set parameters for the selected channel Power up default settings are shown in Table 2 5 Figure 2 7 LCD display and soft keys VOLTS menu shown
19. Manual Section 4 Remote Programming Standard Event Status Register Bits in the Standard Event Status Register are summarized in Table 4 2 Use ESE to enable the corresponding register bit s and the ESE query to read the enable register Use ESR to read the Standard Event Status Register bits Table 4 2 Standard event status register bits Bit Description Operation Complete set by OPC Not used always 0 Query Error Device Dependent Error Execution Error Command Error Not used always 0 7 Power On Set bit indicates that a command query has been sent or a front panel key has been pressed since the Model 12010 12020 has been turned on Querying this bit resets it to zero and it remains zero as long as the instrument remains on D CI A Co N Operation Status group The Operation Status group is not used by the Model 12010 12020 Bits in the associated status register are not used and are always set 0 For compatibility with other instruments associated SCPI commands can still be used Refer to SCPI command reference later in this section for more information Questionable Status group The Questionable Status group is not used by the Model 12010 12020 Bits in the associated status register are not used and are always set 0 For compatibility with other instruments associated SCPI commands can still be used Refer to SCPI command reference l
20. SCPI version to which this instrument complies Example SYST VERS Query the SCPI version OPS 3190027 Rev 0 December 2008 Return to Section Topics 4 29 Section 4 Remote Programming 4 30 Models 12010 and 12020 Pulse Pattern Generator User s Manual TRIG SLOP TRIGger SLOPe Parameters POSitive NEGative Default POS Query TRIG SLOP Description This command programs the Clk In slope and commands whether the signal is generated at the rising POSitive or falling NEGative edge of the external clock input Example TRIG SLOP NEG Set the slope of the clock input to NEGative TRIG SOUR TRIGger SOURCe Parameters IMMediate EXTernal Default IMM Query TRIG SOUR Description This command programs the clock source IMM The internal oscillator is the clock source EXT The clock source is provided by the signal at the Clk In connector The fre quency at the Clk In connector can be measured using the command MEAS FREQ Example TRIG SOUR IMM Select the clock source to the internal oscillator TRIG TERM TRIGger TERM Parameters Numeric mv v Default OV Query TRIG TERM Description This command programs the termination voltage for the external Clock In This voltage is applied only if DC coupled termination is enabled Example TRIG TERM 1V Sets the termination voltage of the signal applied to the external clock input to 1 V TRIG TERM STAT TRIGger TERM STATe Par
21. STIMulus PATTern LENGth Parameters Numeric Default 8 Query DIG PATT LENG Description Use this command to program the pattern length This value is relevant with a DATA pattern type The parameter is common to both channels and must be a multiple of eight The instrument will automatically round the numeral to the nearest multiple of eight if entered incorrectly Example DIG PATT LENG 56 Set the pattern length to 56 DIG PATT TYPE DIGital STIMulus PATTern TYPE Parameters DATA PRBS Default DATA Query DIG PATT TYPE Description Use this command to program the pattern type The parameter is common to both channels Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 4 Remote Programming Example DIG PATT TYPE PRBS Set the pattern type to PRBS DIG PATT PLENgth DIGital STIMulus PATTern PLENgth Parameters Numeric Limits 5 to 15 23 or 31 Default 5 Query DIG PATT PLEN Description Use this command to program the pattern PRBS length This value is only relevant when the pattern type is PRBS The parameter is common to both channels and is specified as 2 1 where n is the specified value Example DIG PATT PLEN 7 Set the pattern length to 27 1 DIG PATT BDATa DIGital 1 2 STIMulus PAT Tern BDATa Parameters start address gt bit count lt data gt Start address The numeri
22. The Model 12010 and 12020 Pulse Pattern Generators give you extensive control over pulse parameters including amplitude offset pulse width and duty cycle The Model 12020 1 is a single channel 1 6 GHz pulse pattern generator the Model 12020 2 includes a second signal output channel The operational flexibility and pattern generation capability of the Model 12010 12020 Pulse Pattern Generators makes them suitable for use in many different applications including simplified simulation of serial data patterns when testing devices to characterize their performance under suboptimal conditions Models 12010 12020 have jitter insertion incorporated into the design Jitter insertion allows you to introduce controlled jitter stress for the simulation of real world signal characteristics Refer to the Jitter insertion section for detailed information 1 2 Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 1 Getting Started Features Frequency output range 15 MHz to 1 6 GHz Pulse amplitude 2 5 V 50 source impedance Pulse width Programmable from 250 ps to period 250 ps Pulse output programmable as voltage amplitude and offset Output channels have differential output Jitter insertion options Internal or external modulation Fouroperating modes Pulse mode Burst mode Pattern mode External Width mode Internal clock and period source
23. UTILITY Saves or Recalls up to nine patterns in non volatile memory InstSave settings Save Mem1 through Mem9 Recall Mem1 through Mem9 Per Period Operating mode Pulse Burst and Pattern Menu TIME Sets the clock period When setting the period frequency is set according to the following calculation frequency 1 period Refer also to Menu JITTER Det Freq Frequency Per setting range 625 ps to 66 67 ns Model 12020 or 1 25 ns to 66 67 ns Model 12010 Pol Polarity Operating mode All Menu VOLTS Normal polarity Norm results in the time specified by the pulse width or a data 1 being at a high level Complement polarity Comp inverts the output signal Refer to Figure 3 7 for visual guidance Pol settings Norm or Comp Figure 3 7 Polarity Period Norm Polarity Comp 3 22 Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 3 Pulse Pattern Generators Operation PRBSLen Pseudo Random Bit Sequence Length Operating mode Pattern Menu PAT BURST The length number of bits for the pseudo random bit sequence PRBS is determined by n in the following equation 2 1 where n can be set from 5 to 15 23 or 31 The PRBSLen setting has effect when the pattern type is PRBS See Length for length setting when the pattern type is Data PRBS n settings n 5 to 15 23 or 31 RefOsc Reference Oscillator Ope
24. area of the mode display OPS 3190027 Rev 0 December 2008 Return to Section Topics 3 3 Section 3 Pulse Pattern Generators Operation Models 12010 and 12020 Pulse Pattern Generator User s Manual Pulse mode 1 Select the Pulse mode as presented in Figure 3 1 2 Perform the steps in Figure 3 2 to access the parameters in the VOLTS and TIME menus Figure 3 2 Configure Pulse mode parameters VOLTS Menu Pulse Mode MODE TIME lt En 1 RR p7 VOLTS JITTER m Trigger GH PAT BURST UTILITY z TRIGGER Channel Off HiLvl Lolvi More Te e o O O o o Menu keys Located next to the keypad A Press the VOLTS key to select the VOLTS menu B Use the soft keys rotary knob or keypad to select and set parameters C Press the TIME key to select the TIME menu TIME Menu D Use the soft keys rotary knob or EON Rulao Mode keypad to select and set the parameters 66 67 ns Frequency 15 000000 MHz NOTE Trigger Cont For Models 12010 2 and 12020 2 use the Channel soft key to toggle between Channel Per Width Delay More Channel 1 and Channel 2 parameters 3 Perform the steps in Figure 3 3 to access the triggering parameters Refer to Table 3 1 for additional information Figure 3 3 Configure triggering TRIGGER Menu Source Cont Pulse Mode lt MODE TIME Type Edge Trigger Source OutEvent Patt Bur Pee VOLT
25. from the risk of electric shock If the circuit is capable of operating at or above 1000 volts no conductive part of the circuit may be exposed Do not connect switching cards directly to unlimited power circuits They are intended to be used with impedance limited sources NEVER connect switching cards directly to AC mains When connecting sources to switching cards install protective devices to limit fault current and voltage to the card Before operating an instrument make sure the line cord is connected to a properly grounded power receptacle Inspect the connecting cables test leads and jumpers for possible wear cracks or breaks before each use 12 08 When installing equipment where access to the main power cord is restricted such as rack mounting a separate main input power disconnect device must be provided in close proximity to the equipment and within easy reach of the operator For maximum safety do not touch the product test cables or any other instruments while power is applied to the circuit under test ALWAYS remove power from the entire test system and discharge any capacitors before connecting or disconnecting cables or jumpers installing or removing switching cards or making internal changes such as installing or removing jumpers Do not touch any object that could provide a current path to the common side of the circuit under test or power line earth ground Always make measurements with dry hands while standing
26. high and low levels Amplitude is not affected For example assume the following levels High Level 1 V Low Level 1 V Amplitude 2 Vpk pk 1 V 1 V 2 Vpk pk Offset 0 V 1 V 1V 2 0V If offset is changed to 0 5 V amplitude will remain at 2 Vo ce but the high and low levels will increase by 0 5 V The high level becomes 1 5 V 1 V 0 5 V and the low level becomes 0 5 V 1 V 4 0 5 V NOTE Low voltage setting may be affected by the resolution specifications of the Model 12010 12020 For example setting amplitude to 250 MVpk pk with an offset of O V will display HiLvl and LoLvl levels of 120 mV and 120 mV instead of 125 mV This is because the setting resolution is 10 mV OutEvent Trigger Out Event Operating mode Burst and Pattern Menu TRIGGER This parameter sets the trigger output correlation Period or Pattern Burst Per A trigger pulse is sent at the start of every pulse or bit Patt Bur A trigger pulse is sent at the start of every complete pattern or burst An exception is in Pattern mode with Type PRBS In this case a trigger pulse is sent at the start of every eight cycles of the PRBS pattern OutEvent setting range Per or Patt Bur OPS 3190027 Rev 0 December 2008 Return to Section Topics 3 21 Section 3 Pulse Pattern Generators Operation Models 12010 and 12020 Pulse Pattern Generator User s Manual PattSave Pattern Save Recall Operating Mode Pulse Pattern or Burst Menu
27. is sent to these female SMA connectors 8 Clock and trigger connectors The following input output female SMA connectors are provided a External input Connect an external signal for external triggering b Clock input Connect an external clock c Channel 1 delay input Connect an external source for Channel 1 external jitter insertion Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 1 Getting Started d Channel 2 delay input Connect an external source for Channel 2 external jitter insertion e Trigger output Connect to an external unit This connector sends a single ended voltage pulse 9 Cursor keys Use these keys to increment or decrement parameter values 10 Soft keys Soft key options that can be selected depend upon the enabled menu The options are positioned in the display immediately above the soft keys Rear panel The rear panel of the instrument is shown in Figure 1 2 Figure 1 2 Rear panel 1 Power Module s IEEE 488 USB Reference Reference Cooling Vents Connector Connector Output Input 6 5 4 Connector Connector BNC BNC 3 2 1 Power module The module contains three elements a AC line receptacle Plug the instrument power cord here b Power line fuse This drawer houses two line fuses Refer to the Line fuse replacement section for instruction c Power switch This switch must be in the 1 on posi
28. set bit period bit period Internal or CIk In During the inactive low part of the signal no patterns are produced If the Ext In falls inactive during a pattern the pattern will still complete Manual Edge or Level One pattern is produced for every press of the ManTrg key bit period Internal or Clk In Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 3 Pulse Pattern Generators Operation Table 3 3 Pattern mode triggering parameters cont Trigger Source Trigger Type Pattern Mode Remote Edge or Level One pattern is produced for every remote trigger command bit period Internal or Clk In Trigger Output Event Per One trigger pulse for each pattern Pulse duration is half the clock period Patt Bur Data One trigger pulse at the beginning of each pattern Pulse duration is approximately four periods long e PRBS A trigger pulse is produced at the beginning of the first pattern and every eighth pattern thereafter Trigger pulse duration is approximately 4 periods long PRBS Trigger Note When the Type is PRBS one pattern consists of eight cycles of the PRBS sequence Thus for continuous trigger source a trigger is output for every eight cycles of the PRBS sequence 6 Press the key s located next to the output connector s to enable the channel s CH1 Enable and CH2 Enable Model 12010 2 and 12020
29. so subsequent events are not recorded Enable register Defines which bits in an event register are included in the logical OR into the summary bit The enable register is logically ANDed with the event register and the resulting bits ORed into the summary bit Enable registers are read write and are not affected by CLS or querying Status byte and service request SRQ The Status Byte Register summarizes the information from all other status groups The summary bit for the Status Byte Register is located in bit 6 RQS When RQS is set it generates an SRQ on the IEEE 488 bus The Status Byte Register is read using a serial poll sequence or with the STB query An SRQ is enabled by setting the associated bit in the Service Request Enable Register with the SRE command This register can be read using the SRE query Bits in the Status Byte Register and Service Request Enable Register are summarized in Table 4 1 Table 4 1 Status byte register and service request enable register bits Bit Description Not used always 0 Not used always 0 Not used always 0 Questionable Status Summary Bit not used MAV Message available in output buffer Standard Event Status Summary bit RQS Request Service Operation Status Summary Bit not used N o OU A Go PO o 4 6 Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s
30. 020 Pulse Pattern Generator User s Manual External instrument connections 2 2 External instrument signal connections are made at the front and rear of the Models 12010 12020 Pulse Pattern Generators All front panel connectors are female Sub Miniature version A SMA The rear panel connectors are female Bayonet Neil Concelman BNC CAUTION instrument damage hazard Electrostatic discharge could harm your instru ment Use approved antistatic devices when making device connections Out 1 and Out 2 connections Figure 2 1 shows how to connect the output channels of the Models 12010 12020 to one or two Device Under Test DUT Figure 2 1 Out 1 and Out 2 connections Connections to a differential device SMA Cables All Connectors Female SMA Connections to two differential devices GGG MM NM 9209 bel Ad e e 9 6 All Connectors Female SMA Trig Out and Ext In connections Figure 2 2 shows connections for Trigger Output Trig Out and Figure 2 3 shows connections for External Input Ext In Trigger output marks each pulse or for pattern mode every eighth bit period Trigger output is used to trigger an external instrument to start an operation for example trigger a scope to capture the waveform After an external instrument completes the operation for example waveform capture it can send a trigger back to the Ext In of the Model 12010 12020 to output another pulse or bit Setting Trig Out an
31. 2 Example of 50 duty cycle Amplitude 500 ps Period ins Duty Cycle Width Period x 100 500 ps 1 ns x 100 0 5 x 100 5096 Jitter insertion The Model 12010 1 J 12010 2 J 12020 1 J and 12020 2 J Pulse Pattern Generators are equipped with jitter insertion to help accurately simulate real world signal characteristics Jitter is the short term instability of one edge relative to a reference edge Jitter is typically specified as a Root Mean Square RMS value which is one standard deviation or sigma The reference edge for period jitter is the previous leading edge The reference edge for delay jitter is the leading edge of the trigger output Width jitter is the stability of the trailing edge with respect to the leading edge 2 12 Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Sinusoidal deterministic random and external jitter can be applied in any combination NOTE The following restrictions apply to jitter insertion Do Not enable SSC and Sine Jitter at the same time Use SSC or Sine Jitte only with Internal Clock source and Continuous Trigger Type Use Deterministic Random or External Input Jitter only with Continuous Trigger Type Table 2 3 Jitter insertion characteristics Parameter Specification Jitter sources Sinusoidal deterministic random and external Sinusoidal Jitter by phase modul
32. 8 Pulse mode 2 9 Operation 3 4 Pulse mode triggering 3 5 Pulse parameter definitions Distortion 2 13 Jitter 2 12 Pulse parameters 2 7 2 8 2 9 Pulse timing and triggering parameters 2 9 Pulse pattern parameters 3 12 R1 return to one 2 9 Rear panel familiarization 1 5 Recalling a setup 3 10 3 11 Ref Out and Ref In connections 2 4 Remote interfaces 4 2 IEEE 488 4 2 USB 4 4 RZ return to zero 2 9 Saving a setup 3 10 3 11 Saving and recalling setups 3 10 SCPI Command Summary 4 9 SCPI commands Description 4 13 Reference 4 9 Summary 4 9 Service request SRQ 4 6 Signal oriented measurement commands 4 9 Status byte 4 6 Status Event Status Register 4 7 Status model 4 5 Condition register 4 6 Enable register 4 6 Event register 4 6 Standard Event Status Register 4 7 Status byte and SRQ 4 6 Status register sets 4 6 Trig Out and Ext In connections 2 2 USB interface 4 4 Connections 4 4 Ventilation 1 6 Models 12010 and 12020 Pulse Pattern Generator User s Manual OPS 3190027 Rev 0 December 2008
33. Changing the offset will change the high and low levels Amplitude is not affected Polarity Polarity can be set to Norm normal or Comp complement Yes Term voltage Enter when the DUT has non zero termination voltage 2 V to 3 3 V Yes Yes The parameter can be independently set for each channel of the Models 12010 2 and 12020 2 No The parameter setting applies to both channels Termination Voltage Entering a non zero termination voltage TermV will change the displayed values of HiLvl LoLvl and Offset to be correct when the output is connected to a 50 ohm load that is not at OV Figure 2 9 shows a schematic of that termination Figure 2 9 Out 1 connected to a DUT with non zero termination voltage Connections to a differential device with non zero termination voltage The Amplitude of the 12010 121020 output pulse does not change but the display shows the correct levels and offset at the DUT given its termination voltage Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Table 2 2 Pulse timing and triggering parameters Pulse timing and triggering parameters Parameters are found under the Time menu unless otherwise noted Section 2 Setup and Pulse Generation Settings Indepen dent Chan nel Settings 12010 2and 12020 2 Parameter Description only Frequency Pulse cy
34. E M 3 16 Oross PE Gross POM a aaa aaa aces ecce rad and desk kne 3 16 is per Scan CMMMIHMEIH tote eed 3 17 BI E E E A T a E 3 17 Bee GG 3 17 RT METER CMM 3 17 Cm 3 17 Enable Deterministic Jitter Enable ceesssessssss 3 18 Enable Random Jitter Enable sess 3 18 Enable Sine Jitter Enable aaa aanak anan 3 18 Enable SSC Ernablg AA AKALA nennen 3 18 SEE EE PA BN 3 18 Freq Deterministic Jitter Frequency ccscceceeeesecceeeeeseeeeeeeeeeees 3 19 Freq Sine Jitter Frequency marrrnnnnvnnnonrvnannrnnnnnvrnnnnvnnnnnnrennnrnnsennennenn Freg PG AA aa a e Func Deterministic Jitter Function E RES TEE EE AA AA Fed Ul a EE Hold Hold Duty Cycle or Wich InstSave Instrument Save Recall LO Port KO Port interface iunii EE M tenure EEE timer EEG JE GE EET GE E oS OutEvent Trigger Out Event PattSave Pattern Save Recall sse a hae MIEL ala jf E PRBSLen Pseudo Random Bit Sequence Length 3 23 RefOsc Reference Oecllator AAA 3 23 JESSEN 3 23 ccc sii 3 23 SOUE Tigger DOCE EE 3 23 Term Clkln Terrible cien eorr tueri n erred n rye kann nrbes 3 24 TermV ClkIn Termination Voltage eene 3 24 TermV Extln Termination Voltage rrnnnnnnvnnnnnnnnnvnnnnnnnnnvnnnnnannvnnnn 3 24 TermV Output Termination Voltage AA 3 25
35. Frequency NRZ DIG 1 2 SIGN FORM Use this command to program the signal format for data and PBRS signals of Channels 1 and 2 when using Pattern mode If you don t specify a channel number in the command Channel 1 is assumed RZ Return to zero For a 0 bit the signal stays low For a 1 bit the signal pulses from the low level to the high level and back to low Pulse width can be specified by the pulse width or duty cycle parameters NRZ Non return to zero For a 0 bit the signal stays low for the entire bit period For a 1 bit the signal stays high for the entire bit period Pulse width is not meaningful in this format Crossing point may be adjusted in this format R1 Return to one For a 1 bit the signal stays high For a 0 bit the signal pulses from the high level to the low level and back to high Pulse width can be specified by the pulse width or duty cycle parameters DIG2 SIGN FORM RZ Set Channel 2 data format to RZ DISPlay BRIGhtness Numeric 1 to 10 8 DISP BRIG Use this command to set the LCD display screen brightness DISP BRIG 7 Set brightness to 7 DISPlay CONTrast Numeric 1 to 10 6 Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 4 Remote Programming Query DISP CONT Description Use this command to set the LCD display screen contrast Example
36. Generator User s Manual STAT OPER COND STATus OPERation CONDition Parameters None Default N A Query STAT OPER COND Description Queries the operation condition register This register is not used the query always returns 0 Example STAT OPER COND Query the operation condition register STAT OPER ENAB STATus OPERation ENABle Parameters None Default N A Query STAT OPER ENAB Description Programs operation enable mask This register is not used the command form does nothing the query always returns 0 Example STAT OPER ENAB Query the operation enable mask STAT OPER ENEV STATus OPERation EVENt Parameters None Default N A Query STAT OPER ENEV Description Queries the operation event register This register is not used the query always returns 0 Example STAT OPER Query the operation event register STAT PRES STATus PRESet Parameters None Default N A Query STAT PRES Description Presets the status structure The registers this command impacts are not used this command has no effect Example STAT PRES Preset the status structure STAT QUES COND STATus QUEStionable CONDition Parameters None Default N A Query STAT QUES COND Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 4 Remote Programming
37. Generator User s Manual Width Operating mode Pulse Burst and Pattern Menu TIME Pulse width is the interval between leading edge and trailing edge medians The median is the 50 level of the amplitude Pulse width can be independently set for each output channel of the 12010 2 and 12020 2 Pulse Pattern Generators Width has no effect in NRZ format Width setting range 250 ps to 66 42 ns 3 26 Return to Section Topics OPS 3190027 Rev 0 December 2008 In this section Topic WUTC i EE Remote interfaces sees Selecting an interface IEEE 488 interface eeeeeeeeeeee USB interface a Status model Status register seis nananana Status byte and service request SRQ Standard Event Status Register Operation Status oroup Questionable Status group Service request programming example Common Commande a Command summary eeeeeneeee SCPI command reference esses SCPI command summary s Command descriptions ssssss Section 4 Remote Programming Section 4 Remote Programming Models 12010 and 12020 Pulse Pattern Generator User s Manual Introduction This section provides detailed information on the remote programming of the Model 12010 12020 Remote interfaces 4 2 The Model 12010 12020 has two remote in
38. ORM Set query channel polarity 4 26 INV WIDTh 1 2 numeric 10 ns Set query pulse width 4 26 VOLTage 01 112 LEVel IMMediate AMPLitude lt numeric gt 50 mV Set query trig channel amplitude 4 26 HIGH numeric 25mV Set query trig channel high level 4 26 LOW numeric 25 mV Set query trig channel low level 4 27 OFFSet lt numeric gt OV Set query trig channel offset 4 27 TERMination numeric OV Set query trig channel termination 4 27 Status OPERation CONDition none n a Query operation condition register ENABle lt numeric gt n a Set query operation enable mask EVENT none n a Query operation event register PRESet none n a Configure the status structure OPS 3190027 Rev 0 December 2008 Return to Section Topics 4 11 Section 4 Remote Programming 4 12 Table 4 5 continued SCPI command summary Models 12010 and 12020 Pulse Pattern Generator User s Manual Command Parameters Default Description Page QUEStionable CONDition none n a Query questionable condition register ENABle lt numeric gt n a Set query questionable enable mask EVENt none n a Query questionable event register SYSTem ERROr NEXT none n a Query error queue VERSion none n a Query SCPI revision TRIGger TRIGger subsystem SLOPe POSitive POS Set query CLK IN slope 4 28 EGative SOURce IMMediate IMM Set query clock source 4 30 EXTernal TERM
39. Power On OR Always Zero ESR ESE lt 0 to 255 gt ESE Operation Event Registers Not Used Logical OR OPS 3190027 Rev 0 December 2008 Return to Section Topics QSB Questionable Summary Bit MAV Message Available ESB Event Summary Bit RQS Request for Service OSB Operation Summary Bit 4 5 Section 4 Remote Programming Models 12010 and 12020 Pulse Pattern Generator User s Manual Status register sets The Operation Status Register set and Questionable Status Register set are each made up of a condition register positive and negative transition filters an event register and an event enable register NOTE The Operation Status group and Questionable Status group are not used by the Model 12010 12020 While these registers can still be accessed with corresponding SCPI commands for compatibility with other instruments associated status register bits are not used and are always set to 0 Refer to Command summary later in this section for more information Condition register Contains the current status of the hardware and firmware is continuously updated and is not latched or buffered Condition registers are read only Event register Latches transition events from the condition register Event registers are cleared either by reading or with the CLS command Event registers are read only and bits are not buffered
40. Press the UTILITY menu key 3 Press the PattSave soft key 4 Press the Channel soft key to choose the pattern in Channel 1 or Channel 2 Models 12010 2 and 12020 2 only Press the Save soft key 6 Save the pattern to memory by pressing the appropriate soft key Mem1 through Mem9 e Recalling a pattern 1 Press the UTILITY menu key 2 Press the PattSave soft key 3 Press the Channel soft key to choose the destination for the pattern in Channel 1 or Chan nel 2 Models 12010 2 and 12020 2 only 4 Press the Recall soft key 5 Recall a saved pattern by pressing the appropriate soft key Mem1 through Mem9 OPS 3190027 Rev 0 December 2008 Return to Section Topics 3 11 Section 3 Pulse Pattern Generators Operation Models 12010 and 12020 Pulse Pattern Generator User s Manual Pulse pattern parameters In Table 3 4 each parameter is listed alphabetically by its soft key name Details follow the table that include applicable operating modes for the parameter and the menu where the parameter soft key is located 3 12 Table 3 4 Soft key parameters Parameter Menu Path A s Deterministic Jitter Amplitude sec Jitter Det A Ul Deterministic Jitter Amplitude Ul Jitter Det A s Random Jitter Amplitude sec Jitter Ran A UI Random Jitter Amplitude Ul Jitter Ran A s Sine Jitter Amplitude sec Jitter Sin A UI Sine Jitter Amplitude Ul Jitter Sin Ampl Amplitude Volts Ampl SSC Amplitude Time S
41. S JITTER rasene Cont PAT BURST UTILITY 4 4 TRIGGER HELP Type OutEvent NOTE o o Q Q e e When Manual trigger source is selected TrgSrc Manual the ManTrg soft key appears on the A Press the TRIGGER key to select the TRIGGER menu left side of the display B Use the soft keys rotary knob and or keypad to select The selected operating mode and set the parameters is indicated here Pulse Mode Burst Mode Pattern Mode or Note There are additional trigger configuration settings ExtWidth Mode in the UTILITY menu Clkln Extln and ClkSrc 3 4 Return to Section Topics OPS 3190027 Rev 0 December 2008 Table 3 1 Pulse mode triggering parameters Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 3 Pulse Pattern Generators Operation Trigger Source Trigger Type Pulse Mode Continuous Edge or Level Pulses are continually produced at the set period Clk Src Internal or Clk In one output pulse for each trigger pulse External Input Edge One pulse is produced for every valid edge on the Ext In signal Clk Src is not applicable Level During the active high part of the signal pulses are continually produced at the set period Clk Src Internal or Clk In During the inactive low part of the signal no pulses are produced Manual Edge or Level One pulse is produced for every press of the Manual key one output pulse for each trigger pul
42. SC AutoCorr Auto Correct Utility System Bit Pattern Burst BstPer Burst Period Pattern Burst CH1BstCnt Channel 1 Burst Count Pattern Burst CH2BstCnt Channel 2 Burst Count Pattern Burst CH1Fmt Channel 1 Format Pattern Burst CH2Fmt Channel 2 Format Pattern Burst Channel Volts CrossPt Cross Point Time ClkSrc Clock Source Utility Delay Time Display Utility System DutyCyc Duty Cycle Time Edit Pat Burst Enable Deterministic Jitter Enable Jitter Det Enable Random Jitter Enable Jitter Random Enable Sine Jitter Enable Jitter Sine Enable SSC Enable Time SSC Ext External Jitter Freq Deterministic Jitter Frequency Jitter Det Menu JITTER Det Freq Frequency Time Freq Sine Jitter Frequency Jitter Sin Freq SSC Frequency Time SSC Func Deterministic Jitter Function Jitter Det Func Deterministic Jitter Function Utility System HiLvl High Level Volts Hold Ul or Sec Ul or Sec Jitter Hold Hold Duty Cycle or Width Hold DutyCyc or Width Time InstSave Instrument Save Recall Utility IOPort I O Port interface Utility System Length Pat Burst LoLvl Low Level Volts Off Offset Volts OutEvent Trigger Out Event Trigger PattSave Pattern Save Recall Utility Per Period Time Pol Polarity Volts Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 3 Pulse Pattern Generators Operation Table 3 4 S
43. SOURce VOLTage 0 1 2 LEVel IMMediate AMPLitude Numeric Value coupling High level offset amplitude 2 Low level offset amplitude 2 Range coupling Offset high level and low level V with engineering prefixes 50 mV VOLT 1 2 This command programs the amplitude of the signal for the trigger output and channels 1 and 2 For this command the trigger output is treated as channel 0 VOLT1 2V Set Channel 1 amplitude to 2 V SOURce VOLTage 0 1 2 LEVe1 IMMediate HIGH Numeric Value coupling Amplitude high level low level Offset high level low level 2 Range coupling Low level amplitude and Offset V with engineering prefixes 25 mV VOLT 1 2 HIGH Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 4 Remote Programming Description This command programs the high level of the signal for the trigger output and channels 1 and 2 For this command the trigger output is treated as channel 0 Example VOLT1 HIGH 2V Set Channel 1 high level voltage to 2 V VOLT LOW SOURce VOLTage 0 1 2 LEVel IMMediate LOW Parameters Numeric Value coupling Amplitude high level low level Offset high level low level 2 Range coupling High level amplitude and Offset Suffix V with engineering prefixes Default 25 mV Query VOLT 1 2 LOW Description This command programs the low level
44. Specifies that 16 bits of data will be loaded 144152 Start of the block 1 Number of characters in the length 4 Length of the data 4152 4 bytes of data Bits 1 through 16 in the Channel 1 pattern data memory will be set to 0100000101010010 DIG1 PATT HDAT 1 8 This query Reads 8 bits of Channel 1 pattern data starting from location 1 Following the above example the response would be 1241 NOTE Ifthe query requests a number of bits that is not a multiple of four the remaining bits in the last byte will be zero and valueless DIG SIGN CROS DIGital 1 2 STIMulus SIGNal CROSover VALue Parameters Numeric value is Default 50 Query DIG 1 2 SIGN CROS OPS 3190027 Rev 0 December 2008 Return to Section Topics 4 17 Section 4 Remote Programming Description Example Models 12010 and 12020 Pulse Pattern Generator User s Manual Use this command to adjust each channel s signal crossover point in PRBS or data mode NRZ format only The crossing point is accurate for 50 only While the range of values is from 30 to 70 over programming in the range 20 to 80 is allowed DIG1 SIGN CROS 60 Set Channel 1 variable crossing point to 60 DIG SIGN FORM Parameters Default Query Description Example DISP BRIG Parameters Limits Default Query Description Example DISP CONT Parameters Limits Default DIGital 1 2 STIMulus SIGNal FORMat RZ NRZ R1 Range Coupling Period
45. User s Manual OPS 3190027 Series 12010 20 Pulse Pattern Generators Picosecond Pulse Labs www picosecond com Picosecond Pulse Labs Inc PSPL 2500 55th Street Boulder CO 80301 USA 303 209 8100 WARRANTY Picosecond Pulse Labs Inc warrants this product to be free from defects in material and workmanship for a period of one 1 year from date of shipment Picosecond Pulse Labs Inc warrants the following items for 90 days from the date of shipment probes cables software rechargeable batteries diskettes and documentation During the warranty period Picosecond Pulse Labs will at its option either repair or replace any product that proves to be defective To exercise this warranty write or call your local Picosecond Pulse Labs representative or contact Picosecond Pulse Labs headquarters in Boulder Colorado You will be given prompt assistance and return instructions Send the product transportation prepaid to the indicated service facility Repairs will be made and the product returned transportation prepaid Repaired or replaced products are warranted for the balance of the original warranty period or at least 90 days LIMITATION OF WARRANTY This warranty does not apply to defects resulting from product modification without Picosecond Pulse Labs express written consent or misuse of any product or part This warranty also does not apply to fuses software non rechargeable batteries damage f
46. Y System The GPIB primary address of the Model 12010 12020 can be set from 0 to 30 At the factory the primary address is set to 10 GPIBAdd setting range 0 to 30 NOTE Changes to this setting take effect only after power is cycled OPS 3190027 Rev 0 December 2008 Return to Section Topics 3 19 Section 3 Pulse Pattern Generators Operation Models 12010 and 12020 Pulse Pattern Generator User s Manual 3 20 HiLvl Hold Hold High Level Operating mode All Menu VOLTS TRIGGER TrgVolts Pulse high and low levels can be set The pulse amplitude and offset will automatically adjust to correspond to the set high low levels refer to Ampl Amplitude and Off Offset High and low levels can be independently set for each output channel and the trigger output of the Model 12010 2 and 12020 2 Pulse Pattern Generator High Low Level setting range 2 V to 3 3 V and resulting amplitude must be in allowed range Ul or Sec Operating mode Pulse Burst and Pattern Menu JITTER Sets whether the jitter amplitude is held constant in Ul or Seconds during changes in clock frequency Hold settings Ul or Sec Hold Duty Cycle or Width Operating mode All Menu TIME Sets whether the pulse width is held constant in duty cycle or width during changes in frequency Hold settings Width or Duty Cycle InstSave Instrument Save Recall Operating Mode All Menu UTILITY Saves or Recalls up to nine setups in non volati
47. a format can be used for the PRBS pattern Refer to the PRBSLen Pseudo Random Bit Sequence Length section for details 2 10 Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 2 Setup and Pulse Generation Settings External Width mode In this mode pulse output follows the edges of an external input trigger that is applied to the Ext In connector As shown in Figure 2 11 a rising edge causes the output to go high while a falling edge causes the output to go low The maximum range of external input trigger is 2 V to 3 V Figure 2 11 External Width mode Amplitude External Input Ext In Leading edge of external trigger Trailing edge causes 1 causes output to go high output to go low Pulse Output Out 1 Out 2 OPS 3190027 Rev 0 December 2008 Return to Section Topics 2 11 Section 2 Setup and Pulse Generation Settings Models 12010 and 12020 Pulse Pattern Generator User s Manual Additional pulse characteristics The following are characteristics inherent to pulse generation and may or may not be affected by various instrument settings or load Duty cycle The duty cycle is the amount of time as a percentage of the pulse period that the pulse is on or active pulse width Duty cycle as a percentage is calculated as follows Duty Cycle Width Period x 100 Figure 2 12 shows an example for duty cycle Figure 2 1
48. able sinusoidal jitter PM EXT STATe SOURce PM 1 2 EXTernal STATe Parameters ON OFF Default OFF Query PM 1 2 EXT STAT Description Use this command to select the Delay In enable disable state for Channel 1 and 2 Delay In can be enabled only if the trigger source is IMMediate Example PM2 EXT STAT ON Enable Channel 2 Delay In PM INT2 SOURce PM 1 2 INTernal2 DEViation Parameters Numeric S Ul Range coupling Frequency Default 50 mUlrms Query PM 1 2 INT2 Query responses are always in UI units Description Use this command to program the random jitter amplitude The value is root mean square Example PM1 INT2 25mUI Set Channel 1 random jitter amplitude to 25 mUlrms PM INT2 STATe SOURce PM 1 2 INTernal2 STATe Parameters ON OFF Default OFF Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 4 Remote Programming Query PM 1 2 INT2 STAT Description Use this command to select the random jitter enable disable state for Channel 1 and 2 Random jitter can be enabled only if the trigger source is IMMediate Example PM1 INT2 STAT ON Enable Channel 1 random jitter PM INT3 SOURce PM 1 2 INTernal3 DEViation Parameters Numeric S UI Range coupling Frequency and Period Default 100 MUlpk pk Query PM 1 2 INT3 Query responses are always in UI units Description Use this command to program the d
49. ameters AC DC Default AC Query TRIG TERM STAT Description This command programs the termination type as AC or DC for the external Clock In Example TRIG TERM STAT DC Set the coupling of the external clock input connector to DC Return to Section Topics OPS 3190027 Rev 0 December 2008 Basic pulse parameters 2 7 Burst mode 2 9 Operation 3 6 Burst mode triggering 3 6 Clk In connections 2 4 Common commands 4 8 Condition register 4 6 Connections Clk In 2 3 Ext In 2 2 Out 1 and Out 2 2 2 Ref In and Ref Out 2 4 Trig Out 2 2 Delay In connections 2 3 Distortion 2 13 Duty cycle 2 12 Enable register 4 6 Event register 4 6 External Width mode 2 11 Operation 3 9 Features 1 3 Front panel familiarization 1 4 GPIB Address selection 4 3 Connections 4 2 GPIB interface 4 2 Inspection 1 2 Invalid entry error message 2 6 Jitter 2 12 Line fuse replacement 1 6 Menu summary 2 14 2 zr c NRZ non return to zero 2 9 OPS 3190027 Rev 0 December 2008 Index Operating mode selection 3 3 Operating Modes 2 9 Operating modes 2 9 Out 1 and Out 2 connections 2 2 parameter values and settings 2 5 Pattern data formats 2 10 Pattern mode 2 9 Operation 3 7 pattern mode triggering 3 8 Power on defaults 2 16 Power up 1 6 PRBS 3 8 Pseudo Random Bit Sequencer PRBS 2 11 Pseudo random bit sequencer PRBS 3 8 Pulse characteristics Distortion 2 13 Duty cycle 2 12 Jitter 2 12 Pulse level parameters 2
50. amming Table 4 5 continued SCPI command summary Command Parameters Default Description Page DEViation numeric 9 0 Set query sinusoidal jitter amplitude 4 21 MUIpk pk FREQuency lt numeric gt 1 MHz Set query sinusoidal jitter frequency 4 21 STATe ON OFF OFF Set query enable disable status of sinu 4 22 soidal jitter insertion P 112 ON OFF OFF EXTernal STATe ON OFF OFF Set query enable disable status of 4 22 sinusoidal jitter insertion INTernal2 DEViation numeric 50 Set query random jitter amplitude 4 22 MUlpk pk STATe ON OFF OFF Set query enable disable status of 4 22 random jitter insertion INTernal3 DEViation lt numeric gt 100 Set query deterministic jitter amplitude 4 23 MUIpk pk FREQuency numeric 1 MHz Set query deterministic jitter frequency 4 23 STATe ON OFF OFF Set query enable disable status of 4 23 deterministic jitter insertion FUNCtion SHAPe SIN SQU SIN Set query deterministic jitter waveform 4 23 TRI shape PULSe BPERiod numeric 8 Set query burst period 4 24 COUNt 112 lt numeric gt 2 Set query burst count 4 24 DCYCle 112 numeric 1596 Set query duty cycle 4 24 DELay 1 2 lt numeric gt Ons Set query delay 4 25 HOLD WIDTh WIDT Set query pulse width hold 4 25 DCYCle PERiod lt numeric gt 66 67 ns Set query pulse period 4 25 POLarity 1 2 NORM COMP N
51. and use the rotary knob or the keypad to specify the number of pulse periods C Press the BstPer soft key and use the rotary knob or the keypad to specify the length of the burst period More Menu keys located next to the keypad Press the More softkey to display additional softkay options BstPer 32 ClkSrc Internal Burst Mode Burst Period 32 Trigger Extin ChiFmt Ch2Fmt PRBS len BstPer e e o o e soft keys More e 3 Perform the steps in Figure 3 3 to access the triggering parameters Refer to Table 3 2 for additional information Table 3 2 Burst mode triggering parameters Burst Mode Trigger Source Trigger Type Continuous Edge or Level Bursts are continually produced at the set period Clk Src Internal or Clk In External Input Edge One burst is produced for every valid edge on the Ext In signal Clk Src Internal or Clk In Level During the active high part of the signal bursts are continually produced at the set period Clk Src Internal or Clk In During the inactive low part of the signal no bursts are produced Manual Edge or Level One burst is produced for every press of the Manual key CIk Src Internal or CIk In Remote Edge or Level One burst is produced for every remote trigger command CIk Src Internal or CIk In Trigger Output Event Per One trigger pulse for each pulse period The number of trigger puls
52. annel The Channel soft key toggles between Channel 1 and Channel 2 for setting individual parameters 12010 2 and 12020 2 Channel settings 1 or 2 CrossPt Cross Point Operating mode Pulse Burst and Pattern Menu TIME The crossing point is the position of the crossing of the rising and falling transitions in an NRZ eye in percent of the amplitude The crossing point may be set anytime but has effect only when the generator is set for NRZ patterns The crossing point is calibrated for 5096 duty cycle equal number of 1s and Os pattern data Over programming in the range of 20 to 80 is allowed CrossPt setting range 30 to 7096 Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 3 Pulse Pattern Generators Operation ClkSrc Clock Source Operating mode Pulse Burst and Pattern Menu UTILITY Select the generator s clock source from this menu Internal Selects the internal clock source Ciklin Selects the external clock source connected at the front panel Clk In After selecting this option the ClkIn frequency can be measured and the generator settings updated MeasNow softkey ClkSrc options Internal and ClkIn Delay Operating mode Pulse Burst and Pattern Menu TIME Delay adjusts the time from the trigger output to the pulse output Note that there is an intrinsic delay in addition to the adjustable delay Thus if delay is s
53. annel 1 and 2 There is an interaction between function shape and maximum deterministic jitter frequency sine and square 20 MHz triangle 4 MHz PM1 INT3 FUNC SQU Set Channel 1 deterministic jitter shape to square SOURce PULSe BPERiod Numeric Range coupling Burst count 8 BPER Use this command to program the burst period set the number of clock cycles in a burst Burst period is common to both channels and is relevant only in burst mode A burst consists of a number of clock cycles as set by the Burst Period The first Burst Count of these cycles will output a pulse the remainder do not The burst period must be entered as a multiple of eight and must be greater than or equal to the burst count value NOTE Ifthe number entered is not a multiple of eight the instrument will automatically round the number to the nearest multiple of eight Example COUN Parameters Default Query Description Example DCYC Parameters Default BPER 32 Set the burst period to 32 SOURce PULSe COUNH 1 2 Numeric Range coupling Burst period 2 COUN 1 2 Use this command to program the burst count set the number of pulses in a burst for Channel 1 or 2 Burst count is relevant only in burst mode A burst consists of a number of clock cycles as set by the Burst Period The first Burst Count of these cycles will output a pulse the remainder do not The burst period must be a minimum
54. ar on the bottom of the display for example Enable Disable or Cancel and can be selected by pressing a soft key Additional soft keys for menu navigation will display as needed Enter soft key Press to enter the parameter setting or value Back soft key Press to return to the previous menu view Cancel soft key Press to cancel a menu selection The menu returns to the previous view Invalid entry error message Trying to enter an invalid parameter setting will result in the following message in the upper right corner of the display Error Press Help Press the HELP key to display a message that explains the error Press any key to cancel the help message Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Basic pulse parameters Section 2 Setup and Pulse Generation Settings The instrument is in pulse mode with continuous triggering selected when it is powered up Once a channel is enabled it will continuously output pulses Figure 2 8 shows the first two pulses of the continuous pulse output using typical settings The parameter names in italic text correspond to the parameter names in the front panel VOLTS and TIME menus Figure 2 8 Typical pulse level and timing parameter settings pulse mode continuous triggering HiLvl 25mV High Level Offset OV Mean LoLvl 25mV Low Level Per Freq Period Frequency
55. ater in this section for more information Service request programming example To generate a service request when a Query Error occurs send these commands ESE 4 SRE 32 OPS 3190027 Rev 0 December 2008 Return to Section Topics 4 7 Section 4 Remote Programming Models 12010 and 12020 Pulse Pattern Generator User s Manual Common commands Command summary IEEE 488 2 common commands supported by the Model 12010 12020 are summarized in Table 4 3 Many of these commands are associated with the status model Refer to Status model earlier in this section for more information Table 4 3 Common commands Command Description CLS Clear status structure ESE 0 255 Set Standard Event Status Register mask ESE Read Standard Event Status Enable Register ESR Read Standard Event Status Event Register IDN Read Instrument s Identification string OPC Set Operation Complete bit when all pending actions are completed OPC Read status of the Operation Complete bit RCL 0 9 Recall complete instrument setting from memory RST Reset instrument to standard settings SAV 1 9 Save complete instrument setting to memory SRE 0 255 Set Service Request Enable Mask SRE Read Service Request Enable Mask STB Read Status Byte TRG Trigger instrument TST Execute instrument self test It will return a 0 if the Model 12010
56. ation of Clock 10 kHz to 10 MHz 10 kHz 40 ns pk pk max 30 kHz 40 ns pk pk max 3 MHz 0 6 ns pk pk max 10 MHz 0 6 ns pk pk max Deterministic jiter Jitter by phase modulation of Output Square 1 Hz to 20 MHz 0 45 Ul p gy max Triangle 1 Hz to 4 MHz 0 5 Ul oc max Sine 1 Hz to 20 MHz 0 5 Ul pk pk max Random jitter Gaussian noise 80 MHz BW 0 08 Ul Aus max External input 80 MHz BW 0 5 Ul p px max with 2 Vy input correspond pk pk pk pk ing to 0 5 Ul pk pk max Distortion Section 2 Setup and Pulse Generation Settings Distortion includes preshoot overshoot and ringing Preshoot and overshoot are peak distortions preceding following an edge Ringing is the positive peak and negative peak distortion excluding overshoot on pulse top or base Distortion for a pulse is shown in Figure 2 13 A combined preshoot overshoot and ringing specification of 5 implies an overshoot and undershoot lt 5 of pulse amplitude Figure 2 13 Distortion Preshoot overshoot and ringing Overshoot e g 5 Amplitude f U Preshoot e g 296 Ringing positive e g 3 Ringing negative e g 2 Time OPS 3190027 Rev 0 December 2008 Return to Section Topics 2 13 Section 2 Setup and Pulse Generation Settings Models 12010 and 12020 Pulse Pattern Generator User s Manual Menu summary A brief description for each menu key is
57. c S Ul Range coupling Frequency Period and Sine jitter frequency 9 0 MUlpk pk PM INT1 Query responses are always in S units Use this command to program the sinusoidal jitter amplitude The value is peak to peak Sinusoidal jitter applies equally to both channels PM INT1 0 3ns Set the amplitude of sinusoidal jitter to 0 3 ns PM INT1 FREQ Parameters OPS 3190027 Rev 0 December 2008 SOURce PM INTernal1 FREQuency Numeric Range coupling Frequency Period and Sine jitter amplitude Return to Section Topics 4 21 Section 4 Remote Programming 4 22 Suffix Default Query Description Example Models 12010 and 12020 Pulse Pattern Generator User s Manual Hz with engineering prefixes 1 MHz PM INT1 FREQ Use this command to program the sinusoidal jitter frequency Sinusoidal jitter applies equally to both channels PM INT1 FREQ 1 3MHz Set the frequency of sinusoidal jitter to 1 3 MHz PM INT1 STATe SOURce PM INTernal1 STATe Parameters ON OFF Range coupling Frequency Period Sine jitter amplitude and Sine jitter frequency Default OFF Query PM INT1 STAT Description Use this command to select the sinusoidal jitter enable disable state Sinusoidal jitter applies equally to both channels Sinusoidal jitter can be enabled only if the trigger source is IMMediate and the clock source is INTernal In addition SSC must be disabled Example PM INT1 STAT ON En
58. c bit number in pattern data memory of the first bit to write The remainder follows consecutively Bit count The number of bits to write into pattern data memory Data An arbitrary block of program data as defined in IEEE Standard 488 2 1992 section 7 7 6 2 This data begins with a number symbol and is followed by a single digit that represents the number of characters in the length then one to five characters specifying the length as a decimal number then lastly the program data Default The first bit is 1 all other bits are 0 Query DIG 1 2 PATT BDAT Description Use this command to program the pattern data memory using binary data format Each byte of pattern data is a binary number representing 8 bits of pattern data The value start address gt bit count must be less than or equal to 16 777 217 The bit count can be any number 1 to 131 072 The entire pattern data memory is accessible for reading or writing even that outside the range of the current pattern length setting The bit count parameter must be equal to eight times the length of the data block or up to seven bits fewer If it is fewer then the extra bits in the last data byte are ignored by the instrument start address gt bit count must be less than or equal to 16 777 216 Examples DIG1 PATT BDAT 1 16 12AR This command Starts loading the data bit into location 1 Specifies that 16 bits of data will be loaded 12AR Sta
59. cle time can be set as frequency or period Frequency can be No set from 15 MHz to 1 6 GHz Period Period can be set from 625 ps to 66 67 ns 2 No Width Pulse width is measured at the 50 amplitude level of the pulse Width Yes can be set from 250 ps to Period 250 ps Delay A delay between the trigger event and the start of each pulse can be set Yes from 0 to Period Duty Cycle The duty cycle may be set between 0 38 and 99 62 Not applicable Yes in NRZ format Crossing Point The crossing point of NRZ data may be set between 30 and 70 Yes Hold Width or Duty Cycle is held constant as Frequency is changed Yes Clock Source The source for period generation can be Internal or an external clock No input Ciklin Under Utility menu Trigger Source Select the trigger source to start pulse output Cont continuous Extln No external input Manual or Remote Under Trigger menu Trigger Type Select the trigger type Edge or Level Under Trigger menu No Yes The parameter can be independently set for each of the two channels of the Model 12010 12020 No The parameter setting applies to both channels of the Model 12010 12020 Model 12010 has maximum Frequency 800 MHz and minimum Period 1 25 ns Operating modes The Model 12010 12020 Pulse Pattern Generators have four operating modes Pulse mode Burst mode Pattern mode and External Width mode Pulse mode Pulse mode delivers a single pulse to the output channel per trigge
60. command parameter to set on or off can be sent as follows ONor 1 OFF or 0 The response message for the queries will be O or 1 Table 4 5 SCPI command summary Command Parameters Default Description Page ARM ARM subsystem SEQuence LAYer LEVel numeric 100 mV Set query threshold level at EXT INPUT 4 13 SENSe EDGE LEVel EDGE _ Set query trigger type 4 13 SLOPe POSitive POS Set query slope at EXT INPUT 4 13 EGative SOURce IMMediate IMM Set query trigger source 4 13 ANual EXTernal REMote TERM numeric OV Set query Ext In termination voltage 4 14 DIGital DIGital subsystem STIMulus PATTern LENGth numeric 8 Set query pattern length 4 14 TYPE DATA PRBS DATA Set query pattern type 4 14 PLENgth numeric 5 Set query PRBS length 4 15 DIGital 1 2 DIGital subsystem STIMulus PATTern BDATa lt numeric gt 1000 Set query pattern data in binary format 4 15 numeric arbitrary block OPS 3190027 Rev 0 December 2008 Return to Section Topics 4 9 Section 4 Remote Programming 4 10 Table 4 5 continued SCPI command summary Models 12010 and 12020 Pulse Pattern Generator User s Manual Command Parameters Default Description Page DATA lt numeric gt 1000 Set query pattern data 4 16 lt numeric gt lt arbitrary
61. cy performance When rack mounting the instrument ensure there is adequate airflow around the instrument rear and sides to ensure proper cooling Adequate airflow enables air temperatures within approximately one inch of the instrument surfaces to remain within specified limits under all operating conditions 1 6 Return to Section Topics OPS 3190027 Rev 0 December 2008 Section 2 Setup and Pulse Generation Settings In this section Topic Page External instrument connections u s 2 2 Out T and Out 2 EEN ege Eegen genee geste ee 2 2 Trig Out and Ext In connections ecce 2 2 Delay in COnnreGtQris coc eerte DUNG 2 3 Ref Out and Ref In connechons eese 2 4 Editing parameter values and settings Ae 2 5 BEE m 2 5 Basic pulse parameters 2 7 Pulse level parameters eese 2 8 Pulse timing and triggering parameters ssesseeereeererersrrsen 2 9 Operating modes elut te rtr Ii Ett eh nr ERR PARE Rn 2 9 BLE EE SE dee 2 9 BUS M um 2 9 Patel RTE 2 9 Pattern data OITIBlB is ert e AA ANN 2 10 Pseudo Random Bit Sequence PPD 2 10 External Widih mode o oo a ANA 2 11 Additional pulse characteristics eese 2 12 DE oo c 2 12 Aes l Io METH 2 12 ETE ett EP 2 13 Meru Summary MEE 2 14 Defaults aaa 2 16 Section 2 Setup and Pulse Generation Settings Models 12010 and 12
62. d 12020 2 Pulse Pattern Generator Ampl setting range 50 MVpk pk to 2 5 Vpk pk NOTE Low voltage settings may be affected by the resolution specifications of the Model 12010 12020 For example setting amplitude to 250 mV py with an offset of O V will display HiLvl and LoLvl levels of 120 mV and 120 mV instead of 125 mV This is because the setting resolution is 10 mV Ampl SSC Amplitude Operating Mode Pulse Pattern or Burst Menu TIME SSC Set the Amplitude modulation depth of the spread spectrum modulation as a percent of the clock frequency The modulation is below the nominal clock frequency For instance a SSC amplitude of 1 on a 100 MHz clock will result in the clock frequency being modulated in the range of 99 MHz to 100 MHz Range 0 to 2 SSC setting range 096 to 296 AutoCorr Auto Correct Operating mode Pulse Burst and Pattern Menu UTILITY This function enables periodic automatic correction of pulse timing width and delay for temperature effects This should normally be disabled default because the temperature correction may result in an interruption of the output data or pulses Enable this only if automatic temperature correction is required and data discontinuities are acceptable Note that temperature correction of the timing is performed every time a given timing parameter is set regardless of the AutoCorr status AutoCorr settings Enable or disable Bit Operating mode Pattern M
63. d Ext In together allows for synchronized operation between two instruments Refer to each operating mode in Section 3 for triggering details Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 2 Setup and Pulse Generation Settings Figure 2 2 Trig Out connections External Instrument Ext In or O Ext Trig or Trig In The actual label name for the connector may SMA Cable be different External Instrument can be one of the following e Scope being triggered to capture a waveform e Another Model 12010 12020 being triggered to start Pulse Burst ExtWidth or Pattern e Any other instrument being triggered to perform an operation Figure 2 3 Ext In connections Hd External Instrument a Ext Out or on un ae AG Ext Out c Bi enn g Out 9 6 The actual label name for the connector may be different SMA Cable External Instrument can be one of the following e Scope triggering the Models 12010 12020 to start Pulse Burst ExtWidth or Pattern e Asecond Series 12010 12020 triggering the first Series 12010 12020 to start Pulse Burst ExtWidth or Pattern e Any other instrument triggering the Series 12010 12020 to start Pulse Burst ExtWidth or Pattern Delay In connections NOTE Models 12010 1 J 12010 2 J 12020 1 J and 12020 2 J have jitter insertion capabilities Refer to the Jitter insertion section fo
64. e Set Channel 2 pulse width hold to constant duty SOURce PULSe PERiod Numeric value is in s Range coupling Width duty cycle and delay Value coupling Frequency period width and duty cycle s with engineering prefixes 66 67 ns PER Use this command to select the internal clock as the time base and program the internal clock period A query returns the internal clock frequency If the clock source is CIk In the last measured period of Clock In is returned PER 10ns Set internal clock period to 10 ns Return to Section Topics 4 25 Section 4 Remote Programming 4 26 POL Parameters Default Query Description Example WIDT Parameters Suffix Default Query Description Example VOLT Parameters Suffix Default Query Description Example VOLT HIGH Parameters Suffix Default Query Models 12010 and 12020 Pulse Pattern Generator User s Manual SOURce PULSe POLarity 1 2 NORMal COMPlement INVerted NORM POL 1 2 Use this command to program the polarity for Channel 1 and 2 COMP and INV are the same setting POL1 NORM Set Channel 1 polarity to normal SOURce PULSe WIDTh 1 2 Numeric value is in s Range coupling Frequency and period Value coupling Duty cycle s with engineering prefixes 10 ns WIDT 1 2 Use this command to program the pulse width for Channel 1 and 2 Set Channel 2 pulse width to 5 2 ns WIDT2 5 2ns
65. e Oscillator Select Internal or External System System Adjust display setting select remote programming control port lOPort GPIB or USB enter GPIB remote programming address GPIB add and enable or disable auto correct AutoCorr Enable or Disable InstSave Save and Recall instrument setups PattSave Save and Recall patterns HELP N A Provides a brief description for the presently selected parameter soft key Press any menu key or soft key to cancel help OPS 3190027 Rev 0 December 2008 Return to Section Topics Section 2 Setup and Pulse Generation Settings 2 15 Section 2 Setup and Pulse Generation Settings Defaults Models 12010 and 12020 Pulse Pattern Generator User s Manual The power up defaults are listed in Table 2 5 Table 2 5 Power up defaults Menu Parameter setting or Menu Parameter Setting or Value Value MODE Operating mode Pulse UTILITY TIME Channel 1 con t Reference Oscillator Internal Frequency 15 000000 MHz System Period 66 67 ns Display Width 10 ns Bright 8 Delay 0 0 ps Contrast 6 Duty Cycle 15 GPIB Address 10 Cross Point 50 IOPort GPIB Spread Spectrum Clocking Disabled Auto Correct Disabled Hold Width TRIGGER Trigger Volts VOLTS Channel 1 Amplitude 50 MVpk pk Amplitude 50 MVpk pk Offset 0 mV Offset 0 mV Hi Level 25 mV High Level 25 mV Lo Level 25 mV Low Level 25 mV Termination Voltage 0 mv Polarity Normal Source Continuous Termination Voltage 0 m
66. e navigation wheel or keypad to enter the pattern length in multiples of 8 If using the keypad key in the value and press the Enter soft key All bits added to the pattern will be O s unless the pattern was longer at a previous time in which case the bits added will have their previous values For Models 12010 2 and 12020 2 the pattern length applies to both channels c Edit pattern bits 0 or 1 i To change cursor position press the Bit soft key and use the navigation wheel or the keypad to place the cursor on the bit to be changed ii Press the Edit soft key and press 0 1 or on the keypad to set the bit the key toggles the bit value The cursor moves right to the next bit which can be changed in the same manner NOTE Level and time parameters for Pattern mode are configured via the TIME and VOLTS menus Refer to Pulse mode section for details OPS 3190027 Rev 0 December 2008 Return to Section Topics 3 7 Section 3 Pulse Pattern Generators Operation 3 8 Figure 3 5 shows the Pattern mode selections from the PAT BURST menu Figure 3 5 PATTERN menu PATTERN Menu Pattern Mode MODE TIME SE Ee VOLTS JITTER 00000000 EG gt PAT BURST UTILITY 00000000 Trigger Manual 3 z TRIGGER HELP Channel Edit Bit Length Type More e Q e Press the More soft key to soft keys display these additional soft key options Press the PAT BRST
67. eeeeeeeeerererereeeee PROT DANG E Rear panal EMEN uro ls Line fuse Oplacembehlt eec AN bli x E Section 1 Getting Started Section 1 Getting Started Models 12010 and 12020 Pulse Pattern Generator User s Manual General information Contact information If you have any questions after reviewing this information please contact your local Picosecond Pulse Labs representative or call one of our applications engineers at 1 303 443 1249 within the U S and Canada You can also visit the Picosecond Pulse Labs website at www picosecond com for updated worldwide contact information Inspection Your model 12010 or 12020 Pulse Pattern Generator was carefully inspected electrically and mechanically before shipment After unpacking all items from the shipping carton check for any obvious signs of physical damage that may have occurred during transit there may be a protective film over the display lens which can be removed Report damage to the shipping agent immediately Save the original packing carton for possible future shipment The following items are included with every instrument order Pulse Pattern Generator with line cord Rack mount handle kit Accessories as ordered e Product Information CD ROM containing the Quick Start Guide User s Manual and any applicable release notes or addenda A printed copy of the Quick Start Guide Model summary
68. en lastly the program data The first bit is 1 all other bits are 0 DIG 1 2 PATT DATA Use this command to program the pattern data memory Each byte of pattern data is a character 0 or 1 representing one bit of pattern data The value lt start address gt lt bit count gt must be less than or equal to 16 777 217 The bit count can be any number 1 to 16 384 The entire pattern data memory is accessible for reading or writing even that outside the range of the current pattern length setting The bit count parameter and the length of the data block must match lt start address gt lt bit count gt must be equal to 16 777 217 DIG1 PATT DATA 1 16 2160100000101010010 This command Starts loading the data bit into location 1 Specifies that 16 bits of data will be loaded 2160100000101010010 Start of the block 2 Number of characters in the length 16 Length of the data 0100000101010010 16 bytes of data Bits 1 through 16 in the Channel 1 pattern data memory will be set to 0100000101010010 DIG1 PATT DATA 1 8 This query Reads 8 bits of Channel 1 pattern data starting from location 1 Following the above example the response would be 1801000001 Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 4 Remote Programming DIG PATT HDAT DIGital 1 2 STIMulus PAT Tern HDATa Parameters start address bit count data
69. enu PAT BRST The Bit soft key is used to position the cursor on a bit that is to be edited After pressing the Bit Soft key use the navigation wheel or keypad to place the cursor on the bit to be edited The pattern can then be edited using the Edit soft key refer to the Pattern mode section for more information OPS 3190027 Rev 0 December 2008 Return to Section Topics 3 15 Section 3 Pulse Pattern Generators Operation Models 12010 and 12020 Pulse Pattern Generator User s Manual BstPer Burst Period Operating mode Burst Menu PAT BURST Burst period specifies the number of clock periods in the burst BstPer setting range 8 to 1 048 576 CH1BstCnt Channel 1 Burst Count CH2BstCnt Channel 2 Burst Count Operating mode Burst Menu PAT BURST Burst Count specifies the number of pulses in a burst It must be less than or equal to the burst period BstCnt setting range 2 to 1 048 576 CH1Fmt Channel 1 Format CH2Fmt Channel 2 Format Operating mode Pattern Menu PAT BRST Bit patterns can be output in the RZ NRZ or R1 format The format can be individually set for each channel In Pattern mode for the Model 12010 2 and 12020 2 use the Ch1Fmt and Ch2Fmt Soft keys to set the pattern format for each channel Format settings RZ NRZ or R1 Channel Operating mode All Menu VOLTS TIME JITTER and PAT BRST The Model 12010 2 and 12020 2 have two channels Some parameters can be independently set for each ch
70. es per burst is equal to the burst period Patt Bur One trigger pulse at the beginning of each burst Trigger pulse duration is approximately four periods long 3 6 Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 3 Pulse Pattern Generators Operation 4 Press the key s located next to the output connector s to enable the channel s CH1 Enable and CH2 Enable Model 12010 2 and 12020 2 only A green indicator lights up to show that the channel is enabled The enabled pulse output is triggered output sequence started according to the trigger configuration 5 When finished disable the output s by again pressing the CH1 ENABLE and CH2 ENABLE Model 12010 2 and 12020 2 keys The green indicator light s turns off Pattern mode 1 Select Pattern mode as presented in Figure 3 1 2 Set up the desired pattern configuration including the pattern format pattern length and pattern bits a Select the pattern format NRZ RZ or R1 i Use the Channel soft key to move the cursor to the desired channel Ch 1 or Ch 2 Model 12010 2 and 12020 2 ii Use the ChiFmt soft key to select from the NRZ RZ or R1 pattern format for Channel 1 Do the same for Channel 2 12010 2 and 12020 2 only b Set pattern length 8 to 16 777 216 bits i Press the More soft key to switch menus until the Length option is shown iii Press the Length soft key and use th
71. et to O trigger out and pulse out are not simultaneous The delay can be independently set for each output channel of the 12010 2 and 12020 2 Pulse Pattern Generator Delay setting range 0 s to Period setting Display Operating mode All Menu UTILITY System The instrument has 10 display settings each for brightness and contrast for the backlight Bright and Contrast setting range 1 to 10 DutyCyc Duty Cycle Operating mode Pulse Menu TIME The duty cycle is the ratio of the pulse width to the period The result is expressed as a percent Duty Cycle can be adjusted anytime but has no effect when the generator is in NRZ format DutyCyc setting range Any value that results in an allowable width setting Edit Operating mode Pattern Menu PAT BRST The Edit soft key is used with the Bit soft key to change one or more bits of a pattern 1 Press the Bit soft key and use the navigation wheel or the keypad to place the cursor on the bit to be changed 2 Press the Edit soft key and then press the 0 1 or key to set the bit toggles the bit value The cursor moves right to the next bit which can then be edited NOTE Refer to Pattern mode for details on pattern configuration OPS 3190027 Rev 0 December 2008 Return to Section Topics 3 17 Section 3 Pulse Pattern Generators Operation Models 12010 and 12020 Pulse Pattern Generator User s Manual Enable Deterministic Jitter Enable Operating Mode All Men
72. eterministic jitter amplitude The value is peak to peak Example PM2 INT3 Query Channel 2 deterministic jitter amplitude PM INT3 FREQ SOURce PM 1 2 INTernal3 FREQuency Parameters Numeric Range coupling Deterministic jitter function Suffix Hz with engineering prefixes Default 1 MHz Query PM 1 2 INT3 FREQ Description Use this command to program the deterministic jitter frequency The maximum allowed frequency is dependent on the deterministic jitter function See PM INT3 FUNC Example PM2 INT3 FREQ 2MHz Setthe Channel 2 frequency of deterministic jitter to 2 MHz PM INT3 STATe SOURce PM 1 2 INTernal3 STATe Parameters ON OFF Default OFF Query PM 1 2 INT3 STAT Description Use this command to select the deterministic jitter enable disable state for Channel 1 and 2 Deterministic jitter can be enabled only if the trigger source is IMMediate Example PM2 INT3 STAT ON Enable Channel 2 deterministic jitter PM INT3 FUNC SOURce PM 1 2 INTernal3 FUNCtion SHAPe Parameters SIN SQU TRI Range coupling Deterministic jitter frequency Default SIN OPS 3190027 Rev 0 December 2008 Return to Section Topics 4 23 Section 4 Remote Programming 4 24 Query Description Example BPER Parameters Default Query Description Models 12010 and 12020 Pulse Pattern Generator User s Manual PM 1 2 INT3 FUNC Use this command to select the function shape of deterministic jitter for Ch
73. eturn to zero A Logic 0 bit remains at 0 V for the entire period H1 Format A Logic 1 bit remains at 2 5 V for the entire period A Logic O bit goes to 0 V for the first half of the period and then returns to 2 5 V for the second half of the period return to one e NRZ Format A Logic 1 bit goes to 2 5 V and stays at 2 5 V for the entire period non return to zero A Logic 0 bit goes to 0 V and remains at 0 V for the entire period NOTE Forany data format the level for Logic 0 does not have to be OV It simply must be less positive more negative than Logic 1 Example 1 Example 2 Logic 122V Logic 120 V Logic 0 1 V Logic 0 2 V Figure 2 10 Example output pattern for RZ R1 and NRZ data formats Output Pattern Logic 1 2 5V 11100010 Logic 0 OV I Period gt Period gt lt Period gt lt Period gt lt Period gt lt Period gt lt Period gt lt Period gt Bit I Bit2 Bit3 Bit4 I Bits I Bite Bit7 Bits 2 5V rz i i i i i RZ format 0 0 0 OV Bitt Bt2 Bits mu Bits Bite Bit 8 2 5V H H H H H R1 format 0 0 0 OV pi Bt2 Bits Bit4 Bits Bite Bit7 Bits 2 5V 4 i i i i i NRZ format 0 0 0 DV Pseudo Random Bit Sequence PRBS The PRBS is used to output a pseudo random pattern for testing purposes The number of bits for the PRBS output pattern can be set as follows PRBS length 2 1 where n 5 to 15 23 or 31 The R1 RZ or NRZ dat
74. external jitter only when Trigger Source is Continuous Ext options Enable or Disable Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 3 Pulse Pattern Generators Operation Freq Deterministic Jitter Frequency Operating Mode Pulse Pattern or Burst Menu JITTER Det Freq Frequency Set the frequency of deterministic jitter in Hz Jitter Frequency ranges Sine 1 Hz to 20 MHz Square 1 Hz to 20 MHz Triangle 1 Hz to 4 MHz Freq Sine Jitter Frequency Operating Mode Pulse Pattern or Burst Menu JITTER Sin Sinusoidal jitter is phase modulation of the instrument clock using a sine function Sinusoidal jitter is enabled on both channels Sinusoidal Jitter and SSC can not be enabled simultaneously The peak to peak jitter insertion amplitude may be specified in seconds or in Ul The graph in Figure 3 6 shows the limiting values for A s versus modulation frequency Choose a combination of values below the limit line Freq SSC Frequency Operating Mode Pulse Pattern or Burst Menu JITTER SSC Set the modulation frequency of the spread spectrum modulation in Hz Range 1 kHz to 100 kHz Freq setting range 1 kHz to 100 kHz Func Deterministic Jitter Function Operating Mode All Menu JITTER Det Func Set the deterministic jitter function as sine square or triangle GPIBAdd GPIB Address Operating mode All Menu UTILIT
75. ions may be present This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury Read and follow all installation operation and maintenance information carefully before using the product Refer to the manual for complete product specifications If the product is used in a manner not specified the protection provided by the product may be impaired The types of product users are Responsible body is the individual or group responsible for the use and maintenance of equipment for ensuring that the equipment is operated within its specifications and operating limits and for ensuring that operators are adequately trained Operators use the product for its intended function They must be trained in electrical safety procedures and proper use of the instrument They must be protected from electric shock and contact with hazardous live circuits Maintenance personnel perform routine procedures on the product to keep it operating properly for example setting the line voltage or replacing consumable materials Maintenance procedures are described in the manual The procedures explicitly state if the operator may perform them Otherwise they should be performed only by service personnel Service personnel are trained to work on live circuits and perform safe installations and repairs of products Only properly trained service personnel may perform in
76. key to select the PATTERN menu Channel Ch1Fmt Ch2Fmt PBRSLen BstPer More e e e e e e soft keys Pseudo random bit sequence PRBS length Use PRBS to output a pseudo random pattern at the output The bit length for the PRBS output pattern is determined by the binary sequence formula 2 1 where n 5 to 15 23 or 31 Refer to Figure 3 5 for soft key direction 1 Select the format RZ NRZ or R1 for the output pattern 2 Use the Type softkey to set the pattern type to PRBS 3 Press the PRBSLen softkey 4 Use the navigation wheel or the keypad to set n for PRBS If using the keypad press the Enter soft key after keying in the value The displayed parameter value is n for formula 2 1 Note that when the Type is set to PRBS the PRBSLen parameter sets the pattern length and the Length parameter is not in use 5 Perform the steps in Figure 3 3 to access the triggering parameters Refer to Table 3 1 for additional information Table 3 3 Pattern mode triggering parameters Trigger Source Trigger Type Pattern Mode Continuous Edge or Level Patterns are continually produced at the set period CIk Src Internal or CIk In External Input Edge One pattern is produced for every valid edge on the Ext In signal bit period Internal or Clk In Models 12010 and 12020 Pulse Pattern Generator User s Manual Level During the active high part of the signal patterns are continually produced at the
77. keys VOLTS menu shown 2 5 Figure 2 8 Typical pulse level and timing parameter settings pulse mode continuous triggering 2 veden 2 7 Figure 2 9 Out 1 connected to a DUT with non zero termination voltage 2 8 Figure 2 10 Example output pattern for RZ R1 and NRZ data formats 2 10 Figure 2 11 External Width mode eese 2 11 Figure 2 12 Example of 50 duty Gye Laan 2 12 Figure 2 13 Distortion Preshoot overshoot and ringing 2 13 Figure 3 1 Select operating mode sse 3 3 Figure 3 2 Configure Pulse mode parameters sssssesess 3 4 Figure 3 8 Configure triggering eessessesseeseeeeeeneneeeenn nnn 3 4 iure 3 4 Selling Burst mode unna Co nette e AL 3 6 Figure 35 PATTERN NIB NAA tort rore teneri 3 8 Figure 3 6 Limit of Modulation Amplitude versus Modulation Frequency 3 14 Figure S7 lli ERR 3 22 Figure 38 Glock hputsehemale juv creer tee nee Deere 3 24 Figure 3 9 External Input schematic ceccceeeeecceeeeeeeeeeeeeeeeeeeeeeeeeseeeees 3 24 Figure 4 1 IEEE 488 and USB connector locations on rear panel 4 3 Figure 4 2 Status ue eek tren i ERR ix 4 5 vi Models 12010 and 12020 Pulse Pattern Generator User s Manual This page left blank intentionally OPS 3190027 Rev 0 December 2008 List of Tables Table 1 1 Model number description
78. l LoLvl and Offset when the output is connected to a DUT with non zero termination voltage TermV setting 2 V to 3 V Threshold Extin Type Type 3 25 Operating Mode Pulse Pattern or Burst Menu UTILITY Extin This parameter sets the detection level for an external input It sets the trigger trip voltage for a transition from low to high with positive slope selected high to low with negative slope selected Threshold may be in the range from 2 V to 3 V See Figure 3 9 Threshold setting 2 V to 3 V Pattern Type This page left blank intentionally Operating mode Pattern Menu PAT BURST This parameter sets the pattern data PRBS or user programmed data Data Output pattern data from the pattern memory PRBS Output a PRBS pattern Refer to the Pseudo Random Bit Sequence PRBS section for details Trigger type settings Data or PRBS Trigger Type Operating mode Pulse Burst and Pattern Menu TRIGGER This parameter sets the trigger mode Edge or Level Edge One trigger event is produced for every valid edge on the Ext In signal Level When the Ext In signal is active the generator is always triggered pulses patterns or bursts are produced continuously When the Ext In signal is inactive triggering stops Trigger type settings Edge or Level Return to Section Topics OPS 3190027 Rev 0 December 2008 Section 3 Pulse Pattern Generators Operation Models 12010 and 12020 Pulse Pattern
79. le memory In general all the parameters for a setup are saved for later recall The instrument can also be returned to the power up default settings at any time InstSave settings Save Mem1 through Mem9 Recall Mem1 through Mem9 and Default IOPort I O Port interface Operating mode All Menu UTILITY System Remote programming for the Model 12010 12020 can be performed using the GPIB or USB interface At the factory the GPIB interface is selected IOPort settings GPIB or USB NOTE Changes to this setting take effect only after power is cycled Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 3 Pulse Pattern Generators Operation Length Operating mode Pattern Menu PAT BRST This parameter sets the length number of bits of the pattern Both channels are set to the same length The pattern length setting has effect when the pattern type is Data See PRBSLen Pseudo Random Bit Sequence Length for length setting when the pattern type is PRBS Length setting range 8 to 16 777 216 in multiples of 8 LoLvl Low Level Operating mode All Menu VOLTS TRIGGER TrgVolts Refer also to HiLvl High Level Off Offset Operating mode All Menu VOLTS TRIGGER TrgVolts Offset is the mean average value of the high and low pulse levels and is calculated as follows Offset High Level Low Level 2 Changing the offset will change the
80. litude versus Modulation Frequency Clock Modulation Sinusoidal Jitter Max Limit Versus Modulation Frequency 1 E 07 1 E 08 1 E 09 Modulation Amplitude Sec 1 E 10 1 E 04 1 E 05 1 E 06 1 E 07 Modulation Frequency Hz A Ul Sine Jitter Amplitude Ul Operating Mode Pulse Pattern or Burst Menu JITTER Sin Sinusoidal jitter is phase modulation of the instrument clock using a sine function Sinusoidal jitter is enabled on both channels Sinusoidal Jitter and SSC can not be enabled simultaneously The peak to peak jitter insertion amplitude may be specified in seconds or in UI Calculate the maximum values of A s from Figure 3 6 3 14 Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 3 Pulse Pattern Generators Operation Ampl Amplitude Operating mode All Menu VOLTS TRIGGER TrgVolts The low to high magnitude is the peak to peak amplitude of the pulse and is calculated as follows Amplitude High Level Low Level In Figure 2 8 amplitude is 50 mV 25 mV 25 mV 50 mV Changing the amplitude will also change the high and low levels Offset is not affected For example if the amplitude in Figure 2 8 is changed to 500MV p the high level becomes 250 mV and low level becomes 250 mV Pulse amplitude can be independently set for each output channel and the trigger output of the Models 12010 2 an
81. n seys Ext I s Ch 11 E Tri output xterna anne rigger Soft keys input delay output connectors 10 8a input 8e SMA Soft key 8c 7 Options Clock trigger and strobe connectors SMA 8 1 On off switch Push this button to turn the instrument on and off The green indicator inside the button lights up when the instrument is on Note that the main power switch on the rear panel power module must also be in the on position refer to Figure 1 2 2 LCD display The display is divided into three areas a Channel 1 parameters Displays Channel 1 parameters for the selected function b Channel 2 parameters Displays Channel 2 parameters for the selected function c Parameter value Displays the value and related information of the selected parameter 3 Navigation wheel Rotate this wheel to increase or decrease the displayed parameter value 4 Numeric keypad Use this keypad to enter parameter values After typing in a value avail able options for example MHz range are displayed as soft keys 5 Menu select keys The various menus are selected using these keys The display then shows the parameters options and other choices available for the selected menu 6 Output enable This button turns output enable on and off one exists for each channel The green indicator inside the button lights up when the output is enabled A trigger event will then start the output 7 Pulse pattern output connectors Output for each channel
82. of 2 and cannot be greater than the burst period value COUN2 5 Set the Channel 2 burst count to 5 1SOURce PULSe DCYCle 1 2 Numeric value is in percent Range coupling Frequency and period Value coupling Width 15 Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Query Description Example DEL Parameters Suffix Default Query Description Example HOLD Parameters Default Query Description Example PER Parameters Suffix Default Query Description Example OPS 3190027 Rev 0 December 2008 Section 4 Remote Programming DCYC 1 2 Use this command to program the duty cycle for Channel 1 or 2 Duty cycle is not relevant when in NRZ format or Ext Width mode DCYC1 41 Set the Channel 1 duty cycle to 41 SOURce PULSe DELay 1 2 Numeric value is in s Range coupling Frequency and period s with engineering prefixes Os DEL 1 2 Use this command to program the delay for Channel 1 or 2 DEL1 lins Set the Channel 1 delay to 11 ns SOURce PULSe HOLD 1 2 WIDTh DCYCle WIDTh HOLD Use this command to program the pulse width hold setting for Channel 1 or Chan nel 2 When set to WIDTH if the frequency is changed the pulse width is held to a constant value When set to DCYCle if the frequency is changed the duty cycle is held to a constant value HOLD2 DCYCle cycl
83. of the signal for the trigger output and channels 1 and 2 For this command the trigger output is treated as channel 0 Example VOLT1 LOW 2V Set Channel 1 low level voltage to 2 V VOLT OFFS SOURce VOLTage 0 1 2 LEVel IMMediate OFFSet Parameters Numeric Value coupling High level offset amplitude 2 Low level offset amplitude 2 Range coupling Amplitude high level and low level Suffix V with engineering prefixes Default 0 mV Query VOLT 1 2 OFFS Description This command programs the offset of the signal for the trigger output and chan nels 1 and 2 For this command the trigger output is treated as channel 0 Example VOLT1 0FFS 0 5 V Set Channel 1 offset voltage to 0 5 V VOLT TERM SOURce VOLTage 0 1 2 LEVel IMMediate TERMination Parameters Numeric Range coupling High level low level amplitude and offset Value coupling High level low level and offset Suffix V with engineering prefixes Default ov Query VOLT 112 TERM Description This command programs the user supplied termination voltage This setting results in the high level low level and offset values being updated to reflect the correct levels at the load given its termination voltage Example VOLT2 TERM 1 0V Set Channel 2 termination voltage to 1 0 V OPS 3190027 Rev 0 December 2008 Return to Section Topics 4 27 Section 4 Remote Programming 4 28 Models 12010 and 12020 Pulse Pattern
84. oft key parameters cont Parameter Menu Path PRBSLen Pseudo Random Bit Sequence Length Pat Burst RefOsc Reference Oscillator Utility Slope Cikin Slope Utility ClkIn Slope Extin Utility Extln Source Trigger Source Trigger Term ClkIn Termination Utiltiy Ciklin TermV ClkIn Termination Voltage Utility Ciklin TermV Extln Termination Voltage Utility Extln TermV Output Termination Voltage Volts Threshold Extin Utility Extln Type Pattern Type Pat Burst Type Trigger Type Trigger Width Time A s Deterministic Jitter Amplitude sec Operating Mode All Menu JITTER Det Func Deterministic jitter is phase modulation of the output signal The magnitude of the jitter may be specified in seconds or in Ul Deterministic jitter can be enabled on one or both channels The maximum limit depends on the choice of jitter distribution Calculate the maximum values of A s from the maxima listed in A UI Deterministic Jitter Amplitude UI A Ul Deterministic Jitter Amplitude UI Operating Mode All Menu JITTER Det Func Deterministic jitter is phase modulation of the output signal The magnitude of the peak to peak jitter may be specified in seconds or in Ul Deterministic jitter can be enabled on one or both channels The maximum limit depends on the type of jitter distribution selected A UI setting Sine 0 UI to 0 5 Ul Square OUI to 0 45 UI Triangle O Ul to 0 5 Ul A s Random Jitter Amplitude
85. on Example FM DEV Parameters Default Query Description Example FM FREQ Parameters Suffix Default Query Description Example FM STAT Parameters Default Query Description Example FREQ Parameters Suffix Default Query Models 12010 and 12020 Pulse Pattern Generator User s Manual INT SENS ROSC SOUR Use this command to program the 10 MHz reference source SENS ROSC SOUR INT Set the 10 MHz source to use the internal reference SOURce FM INTernal DEViation Numeric value is percent 1 FM DEV Use this command to select the Spread Spectrum Clocking SSC amplitude FM DEV 1 5 Set SSC amplitude to 1 5 SOURce FM INTernal FREQuency Numeric Hz with engineering prefixes 33 kHz FM FREQ Use this command to select the SSC frequency FM FREQ 40kHz Set SSC frequency to 40 kHz SOURce FM STATe ON OFF OFF FM STAT Use this command to select the SSC enable disable state The SSC can be enabled only if the trigger source is IMMediate and the clock source is INTernal In addition sine jitter must be disabled FM STAT OFF Disable SSC SOURCe FREQuency CW FIXed Numeric Range coupling Width duty cycle delay Value coupling Period width duty cycle Hz with engineering prefixes 15 MHz FREQ Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual
86. on a dry insulated surface capable of withstanding the voltage being measured The instrument and accessories must be used in accordance with their specifications and operating instructions or the safety of the equipment may be impaired Do not exceed the maximum signal levels of the instruments and accessories as defined in the specifications and operating information and as shown on the instrument or test fixture panels or switching card When fuses are used in a product replace with same type and rating for continued protection against fire hazard Chassis connections must only be used as shield connections for measuring circuits NOT as safety earth ground connections If you are using a test fixture keep the lid closed while power is applied to the device under test Safe operation requires the use of a lid interlock lfa screw is present connect it to safety earth ground using the wire recommended in the user documentation The A symbol on an instrument indicates that the user should refer to the operating instructions located in the manual The A symbol on an instrument shows that it can source or measure 1000 volts or more including the combined effect of normal and common mode voltages Use standard safety precautions to avoid personal contact with these voltages The symbol on an instrument shows that the surface may be hot Avoid personal contact to prevent burns The Al symbol indicates a connection terminal to the equipmen
87. ped with a type A plug on one end and a type B plug on the other end Connect the type A plug to the type A USB socket on the host computer or USB hub Connect the type B plug to the type B socket located on the rear panel of the Model 12010 12020 USB identifiers Model 12010 VID PID Model 12020 VID PID Vendor ID 0x1857 Product ID OX2EEA Vendor ID 2 0x1857 Product ID 0x2EF4 PR RR Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 4 Remote Programming Status model The Model 12010 12020 has a number of status registers allowing you to monitor and manipulate the various instrument events The status model is shown in Figure 4 2 The core of the status model is the Status Byte Register This register can be read by your test program to determine if a service request SRQ has occurred and what event caused it Figure 4 2 Status model Questionable Event Registers Not Used Output Buffer Logical OR Service Status Request Byte Enable Register Register 0 oH 9 Standard Event Registers 1 1 Event Event Enable O Register Register 2 Z QSB QSB Logical Operation Complete MAV L 9 MAN OR ESB O ESB Query Error RQS 6 Device Dependent Error OSB OSB Execution Error STB SRE lt 0 255 gt Command Error SRE Logical
88. provided in Table 2 4 Table 2 4 Menu summary Menu Key Menu Item Description MODE Pulse Select Pulse mode Pattern Select Pattern mode Burst Select Burst mode ExtWidth External Width Select External Width mode VOLTS Channel 12010 2 and 12020 2 only Select channel Ampl Amplitude Set peak to peak amplitude Off Offset Set offset H vl High Level Set high level LoLvl Low Level Set low level Pol Polarity Set polarity Norm normal or Comp complement TermV Enter when the DUT has non zero termination voltage PAT BURST Channel 12010 2 and 12020 2 only Select output channel Ch1BstCt Channel 1 Burst Count Set burst count for channel 1 burst mode Ch2BstCt Channel 2 Burst Count Set burst count for channel 2 burst mode Edit Edit Change bit to 0 or 1 use 0 1 or key Bit Bit Number Select the bit to be changed Length Pattern Length Set the number of bits of the pattern Type Pattern Type Select Data or PRBS Ch1Fmt Channel 1 Format Set channel 1 format R1 RZ or NRZ Ch2Fmt Channel 2 Format Set channel 2 format R1 RZ or NRZ PRBSLen PRBS Length Set the n in formula 2 1 n 5 to 15 23 31 BstPer Burst Period Set period in increments of 8 TRIGGER TrgVolts Refer to VOLTS menu above Source Trigger Source Select Continuous Cont External Input Extln Man ual or Remote Type Trigger Type Select Edge or Level OutEvent Output Event Select Per period or Patt Bur pattern burst
89. r details A jitter insertion source may be internal or external The Delay In connections are used to apply external jitter to the output signal For the Models 12010 2 J and 12020 2 J the Delay In 1 connection applies to Channel 1 and the Delay In 2 connection applies to Channel 2 Figure 2 4 OPS 3190027 Rev 0 December 2008 Return to Section Topics 2 3 Section 2 Setup and Pulse Generation Settings Models 12010 and 12020 Pulse Pattern Generator User s Manual Figure 2 4 Delay In connections TEES DIAM i External Instrument TWiOO R HELP Ext Out or Ga gt dh Y a H Trig Out 0 0 The actual label name for the connector may be different Delay In 2 SMA Cable Delay In 1 External Instrument can be one of the following e A second Series 12010 12020 to start jitter insertion e Any other frequency source to start jitter insertion Clk In connections The period source can be provided by an external clock as shown in Table 2 5 Refer to each operating mode in Section 3 for triggering details Figure 2 5 Clk In connections External Instrument Ext Clk or Clk Out The actual label name for the clock output connector may be different SMA Cable Ref Out and Ref In connections When using multiple instruments in a system the internal clock reference of a single unit may be shared made common to all units by connecting the Reference Output Ref Out connector of one unit to the Reference
90. r event The basic pulse level timing and triggering parameters are summarized in Table 2 1 and Table 2 2 Burst mode This mode is similar to the Pulse mode except that each trigger event will deliver a series burst of n pulses In Burst mode 2 to 1 048 576 pulses can be delivered Pattern mode Pattern mode delivers a user configured or pre configured bit pattern that consists of Logic 0 s and 1 s The length of the bit pattern can be 8 to 16 777 216 bits The pattern may be presented in R1 return to one RZ return to zero or NRZ non return to zero format In R1 and RZ modes the duration duty cycle of the pattern pulse is programmable In NRZ mode the pattern crossing OPS 3190027 Rev 0 December 2008 Return to Section Topics 2 9 Section 2 Setup and Pulse Generation Settings Models 12010 and 12020 Pulse Pattern Generator User s Manual point is programmable Logic 0 represents the low pulse level and Logic 1 represents the high pulse level Pattern data formats There are three data formats for output patterns RZ return to zero R1 return to one and NRZ non return to zero Figure 2 10 shows the difference between the three formats The 8 bit pattern is the same for all three formats 11100010 and the logic levels are the same Logic 0 0 V Logic 1 2 5 V RZ Format For 50 duty cycle a Logic 1 bit goes to 2 5 V for the first half of the period and then returns to 0 V for the second half of the period r
91. rating mode All Menu UTILITY Select the generator s reference clock from this menu Internal Selects the internal 10 MHz reference clock External Selects the external 10 MHz reference clock source connected at the rear panel Ref In RefOsc options Internal and External Slope Clkin Slope Operating Mode Pulse Pattern or Burst Menu UTILITY Cikin Slope Clock input can be set to detect the positive Pos or negative Neg slope of the external clock pulses Slope settings Pos or Neg Slope Extin Operating Mode Pulse Pattern or Burst Menu UTILITY Extin Slope External input can be set to select the positive Pos or negative Neg slope of the trigger Slope settings Pos or Neg Source Trigger Source Operating mode Pulse Burst and Pattern Menu TRIGGER Cont The pulse pattern generator is always triggered pulses bursts or patterns are produced continuously ExtIn Selects the Extln signal from Ext In connector as the Trigger Source Manual Selects manual triggering a trigger is generated when the ManTrg soft key is pressed Remote Selects remote triggering trigger events are provided by the GPIB or USB port Trigger source settings Cont Extln Manual or Remote OPS 3190027 Rev 0 December 2008 Return to Section Topics 3 23 Section 3 Pulse Pattern Generators Operation Models 12010 and 12020 Pulse Pattern Generator User s Manual Term Cikin Termination Operating Mode Pulse
92. re It is recommended that you stack no more than three connectors on any one unit to avoid possible mechanical damage To minimize interference caused by electromagnetic radiation use only shielded IEEE 488 cables Connect the Model 12010 12020 to the IEEE 488 bus 1 Line up the cable connector with the connector located on the rear panel The connector is designed so that it will fit only one way Figure 4 1 shows the location of the IEEE 488 connector on the instrument 2 Tighten the screws securely but do not overtighten them Add additional connectors from other instruments as required 4 Makecertain that the other end of the cable is properly connected to the controller Most controllers are equipped with an IEEE 488 style connector but a few may require a different type of connecting cable Consult the instruction manual of your controller for the proper connecting method e Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 4 Remote Programming Note that the IEEE 488 bus is limited to a maximum of 15 devices including the controller The maximum cable length is 20 meters or two meters times the number of devices whichever is less Failure to observe these limits may result in erratic bus operation Figure 4 1 IEEE 488 and USB connector locations on rear panel IEEE 488 USB Connector Connector Address selection The default prima
93. rom battery leakage or problems arising from normal wear or failure to follow instructions THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE THE REMEDIES PROVIDED HEREIN ARE BUYER S SOLE AND EXCLUSIVE REMEDIES NEITHER PICOSECOND PULSE LABS INC NOR ANY OF ITS EMPLOYEES SHALL BE LIABLE FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF ITS INSTRUMENTS AND SOFTWARE EVEN IF PICOSECOND PULSE LABS INC HAS BEEN ADVISED IN ADVANCE OF THE POSSIBILITY OF SUCH DAMAGES SUCH EXCLUDED DAMAGES SHALL INCLUDE BUT ARE NOT LIMITED TO COST OF REMOVAL AND INSTALLATION LOSSES SUSTAINED AS THE RESULT OF INJURY TO ANY PERSON OR DAMAGE TO PROPERTY Picosecond Pulse Labs Picosecond Pulse Labs Inc Corporate Headquarters 2500 55th Street Boulder Colorado 80301 303 443 1249 Fax 303 447 2236 www picosecond com 12 08 Models 12010 and 12020 Pulse Pattern Generator User s Manual 2008 Picosecond Pulse Labs Inc All rights reserved Boulder Colorado U S A Document Number OPS 3190027 Rev 0 December 2008 Safety Precautions The following safety precautions should be observed before using this product and any associated instrumentation Although some instruments and accessories would normally be used with non hazardous voltages there are situations where hazardous condit
94. rs for a setup are saved for later recall For example Mem1 may be a setup for Pulse mode Mem2 may be a setup for Burst mode Mem3 may be a setup for Pattern mode and so on The instrument can also be returned to the power up default settings at any time Saving a setup 1 Configure the Model 12010 12020 for the desired pulse pattern operation 2 Pressthe UTILITY menu key 3 Press the InstSave soft key 4 Press the Save soft key 5 Save the setup to memory by pressing the appropriate soft key Mem1 through Mem9 Recalling a setup 1 Press the UTILITY menu key 2 Pressthe InstSave soft key 3 Press the Recall soft key 4 Return the instrument to a saved setup by pressing the appropriate soft key Mem1 through Mem9 NOTE When the instrument returns to a saved or the default setup the output s will disable Returning to default settings Default settings are listed in Table 2 5 PO ND 5 3 10 Press the UTILITY menu key Press the InstSave soft key Press the Recall soft key Return the instrument to the default settings by pressing the Default soft key Return to Section Topics OPS 3190027 Rev 0 December 2008 Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 3 Pulse Pattern Generators Operation Saving and recalling patterns The Model 12010 12020 can save up to nine patterns in non volatile memory Saving a pattern 1 Configure the Model 12010 12020 for the desired pattern 2
95. rt of the block 1 Number of characters in the length 2 Length of the data AR 2 bytes of data OPS 3190027 Rev 0 December 2008 Return to Section Topics 4 15 Section 4 Remote Programming Models 12010 and 12020 Pulse Pattern Generator User s Manual This example includes bytes that have an ASCII printable representation but any byte value may be used A is the hex byte 0x41 and R is the hex byte 0x52 Thus bits 1 through 16 in the Channel 1 pattern data memory will be set to 0100000101010010 DIG1 PATT BDAT 1 8 This query Reads 8 bits of Channel 1 pattern data starting from location 1 Following the above example the response would be 11A NOTE Ifthe query requests a number of bits that is not a multiple of eight the remaining bits in the last byte will be zero and valueless DIG PATT DATA Parameters Default Query Description Examples DIGital 1 2 STIMulus PAT Tern DATA start address bit count data Start address The numeric bit number in pattern data memory of the first bit to write The remainder follows consecutively Bit count The number of bits to write into pattern data memory Data An arbitrary block of program data as defined in IEEE Standard 488 2 1992 section 7 7 6 2 This data begins with a number symbol and is followed by a single digit that represents the number of characters in the length then one to five characters specifying the length as a decimal number th
96. ry address for the Model 12010 12020 is 10 The primary address may be set to any value between 0 and 30 as long as the address doesn t conflict with other instruments Note that controllers are also given a primary address Most frequently controller addresses are 0 or 21 but you should consult the controller s instruction manual for details Whatever primary address you choose you must make certain that it corresponds with the value specified as part of the controller s programming language To check the present primary address or to change to a new one 1 Press the UTILITY menu key on the front panel and then press the System soft key 2 Press the GPIBAdd soft key to display the current GPIB primary address 3 Set the GPIB address to the desired value in the range of 0 to 30 using the navigation wheel and numeric keys NOTE Reboot the instrument after selecting a different interface or making changes to the communication parameters OPS 3190027 Rev 0 December 2008 Return to Section Topics 4 3 Section 4 Remote Programming Models 12010 and 12020 Pulse Pattern Generator User s Manual 4 4 USB interface The Models 12010 and 12020 are USB TMC class devices Before using the USB interface be sure to disconnect a GPIB from the instrument as only one interface can be used at a time Connections The Model 12010 12020 includes a type B USB socket on the rear panel refer to Figure 4 1 Typically you will use a USB cable equip
97. s esee 1 3 Table 2 1 Pulse level parameters ecccccccceseccceeeeseeceeeeeeeeeeeeeeeeeeeeeeeeneees 2 8 Table 2 2 Pulse timing and triggering parameters 2 9 Table 2 3 Jitter insertion characteristics rrrnnnnrnrrrnnnnnvrrrnnnnnnvnnrnnnnnvnnnnn 2 13 tabe 24 Menu BUB eoi re Lei be edat Lene e Leite Lees 2 14 Table 25 Porerupdeaults miniserie ineo N eene 2 16 Table 3 1 Pulse mode triggering parameters ssseseseeesrirsssesrsssrrrrnnsrennnn 3 5 Table 3 2 Burst mode triggering parameters seseeeessssss 3 6 Table 3 3 Pattern mode triggering parameters eeeseeeesess 3 8 Table 3 4 Soft key parameters eeseessssesssseseeeeree nennen nen 3 12 Table 4 1 Status byte register and service request enable register bits 4 6 Table 4 2 Standard event status register bit 4 7 Table 4 3 Common commande AAA 4 8 Table 4 4 Command evamples sess nnns 4 8 Table 4 5 SGPI command UMM AA eee 4 9 Models 12010 and 12020 Pulse Pattern Generator User s Manual This page left blank intentionally viii OPS 3190027 Rev 0 December 2008 In this section Topic General information ee tette eens Contact GG eie teet i MH Model summary ua tnter tnn tnn cns FOSSE vanene Model number descriptions Front and rear panel familiarization eseeeeeeeeee
98. se Remote Edge or Level One pulse is produced for every remote trigger command one output pulse for each trigger pulse Trigger Output Event Not applicable 4 Press the key s located next to the output connector s to enable the channel s CH1 Enable and CH2 Enable Models 12010 2 and 12020 2 only A green indicator lights up to show that the channel is enabled The enabled pulse output is triggered output sequence started according to the trigger configuration 5 When finished disable the output s by again pressing the CH1 ENABLE and CH2 ENABLE Models 12010 2 and 12020 2 keys The green indicator light s turns off OPS 3190027 Rev 0 December 2008 Return to Section Topics 3 5 Section 3 Pulse Pattern Generators Operation Models 12010 and 12020 Pulse Pattern Generator User s Manual Burst mode 1 Select the Burst mode as shown in Figure 3 1 2 Perform the steps in Figure 3 4 to set the Burst count or Burst period Burst count can be set from 2 to 1 048 576 pulse periods Burst period length can be set from 8 to 1 048 576 Figure 3 4 Setting Burst mode PAT BURST Menu BstPer 32 ClkSrc Internal Burst Mode MODE TIME Ch 1 e Count VES HER Trigger Extln gt PAT BURST UTILITY TRIGGER HELP Ch1BstCt Ch2BstCt ClkSrc soft keys A Press the PAT BURST key to select the BURSTmenu B Press the BstCt soft key for the selected channel
99. sec Operating Mode All Menu JITTER Ran Random jitter is phase modulation of the output signal using an internal broadband white noise source Random jitter can be enabled on one or both channels The magnitude rms of the Gaussian distribution may be specified in seconds or in Ul Calculate the maximum values of A s from the maxima listed in A UI Random Jitter Amplitude UI A Ul Random Jitter Amplitude Ul Operating Mode All Menu JITTER Ran OPS 3190027 Rev 0 December 2008 Return to Section Topics 3 13 Section 3 Pulse Pattern Generators Operation Models 12010 and 12020 Pulse Pattern Generator User s Manual Random jitter is phase modulation of the output signal using an internal broadband white noise source Random jitter can be enabled on one or both channels The magnitude rms of the Gaussian distribution may be specified in seconds or in Ul A Ul setting 0 UI to 0 08 UI A s Sine Jitter Amplitude sec Operating Mode Pulse Pattern or Burst Menu JITTER Sin Sinusoidal jitter is phase modulation of the instrument clock using a sine function Sinusoidal jitter is enabled on both channels Sinusoidal Jitter and SSC can not be enabled simultaneously The peak to peak jitter insertion amplitude may be specified in seconds or in UI The graph in Figure 3 6 shows the limiting values for A s versus modulation frequency Choose a combination of values below the limit line Figure 3 6 Limit of Modulation Amp
100. stallation and service procedures Picosecond Pulse Labs products are designed for use with electrical signals that are rated Measurement Category and Measurement Category Il as described in the International Electrotechnical Commission IEC Standard IEC 60664 Most measurement control and data I O signals are Measurement Category I and must not be directly connected to mains voltage or to voltage sources with high transient over voltages Measurement Category Il connections require protection for high transient over voltages often associated with local AC mains connections Assume all measurement control and data I O connections are for connection to Category sources unless otherwise marked or described in the manual Exercise extreme caution when a shock hazard is present Lethal voltage may be present on cable connector jacks or test fixtures The American National Standards Institute ANSI states that a shock hazard exists when voltage levels greater than 30V RMS 42 4V peak or 60VDC are present A good safety practice is to expect that hazardous voltage is present in any unknown circuit before measuring Operators of this product must be protected from electric shock at all times The responsible body must ensure that operators are prevented access and or insulated from every connection point In some cases connections must be exposed to potential human contact Product operators in these circumstances must be trained to protect themselves
101. t frame The WARNING heading in a manual explains dangers that might result in personal injury or death Always read the associated information very carefully before performing the indicated procedure The CAUTION heading in a manual explains hazards that could damage the instrument Such damage may invalidate the warranty Instrumentation and accessories shall not be connected to humans Before performing any maintenance disconnect the line cord and all test cables To maintain protection from electric shock and fire replacement components in mains circuits including the power transformer test leads and input jacks must be purchased from Picosecond Pulse Labs Standard fuses with applicable national safety approvals may be used if the rating and type are the same Other components that are not safety related may be purchased from other suppliers as long as they are equivalent to the original component Note that selected parts should be purchased only through Picosecond Pulse Labs to maintain accuracy and functionality of the product If you are unsure about the applicability of a replacement component call a Picosecond Pulse Labs office for information To clean an instrument use a damp cloth or mild water based cleaner Clean the exterior of the instrument only Do not apply cleaner directly to the instrument or allow liquids to enter or spill on the instrument Products that consist of a circuit board with no case or chassis e g da
102. ta acquisition board for installation into a computer should never require cleaning if handled according to instructions If the board becomes contaminated and operation is affected the board should be returned to the factory for proper cleaning servicing Table of Contents opo Started MMC 1 1 General dg BE 1 2 Comac STG EE 1 2 AP 1 2 Model SUMMA EE 1 2 a 1 3 Model number GeSCriptans ERE 1 3 Front and rear panel familiarization esee 1 4 gii n MMC 1 4 al el M 1 5 moro A c 1 6 Line fuse replacement aanak 1 6 I TAP PRA PAA PARA RA 1 6 Setup and Pulse Generation Settings 0 senseseeeerrrrn serere 2 1 External instrument CONNECHIONS ccceceecceceeeeeeeeeeeeeeeeeeeeeeetenneeeeeneneees 2 2 Qut and Out 2 Ge 2 2 Trig Out and Ext In connections aan sa ertet 2 2 Delay esi sc Dm 2 3 e ADI eon REL 2 4 Ref Out and Ref In connections a cederent tenter 2 4 Editing parameter values and seittngs A 2 5 Bii A 2 5 Basic pulse parameter ANA amain 2 7 Pulse BE ATA E 2 8 Pulse timing and triggering Darameierg esses 2 9 ROTATING HOS mM Em 2 9 Se n 2 9 rider MM 2 9 c CTIL Ilocos 2 11 Additional pulse characteristics eseeeeneeees 2 12 DUY E 2 12 Jer TEE 2 12 Bsp RM 2 13 Menu Seen 2 14 BEE EE
103. terfaces IEEE 488 and USB Universal Serial Bus You can use only one interface at a time NOTE Cycle the power after selecting a different interface or making changes to the communication parameters Selecting an interface Select the interface to be used for remote operation GPIB or USB 1 On the front panel press the UTILITY menu key and then the System soft key 2 Press the lOPort soft key to display the present interface selection 3 Press the GPIB or USB soft key IEEE 488 interface The Model 12010 12020 can be connected to the IEEE 488 bus also known as the GPIB or General Purpose Interface Bus through a cable equipped with standard IEEE 488 connectors The Model 12010 12020 conforms to the IEEE 488 2 and SCPI standards Standard Commands for Programmable Instruments IEEE standard 488 2 defines a syntax for sending data to and from instruments how an instrument interprets this data what registers should exist to record the state of the instrument and a group of common commands The SCPI standard defines a command language protocol it defines a standard set of commands to control every programmable aspect of an instrument Connections The Model 12010 12020 can be connected to the IEEE 488 bus through a cable equipped with standard IEEE 488 connectors The connector can be stacked to allow a number of parallel connections to one instrument Two screws are located on each connector to ensure that connections remain secu
104. tion to enable the front panel On Off switch refer to Figure 1 1 2 Reference input connector This female BNC connector accepts an external 10 MHz oscillator signal for clock reference NOTE Use the REF IN and REF OUT connectors to connect multiple instruments for the purpose of using one internal clock as the period source 3 Reference output connector A 10 MHz signal phase locked to the internal clock is sent through this female BNC connector 4 USB connector For USB remote operation use a USB cable to connect to the USB inter face of the remote interface 5 EEE 488 connector For GPIB remote operation use a shielded cable 6 Cooling vents The instrument uses a cooling fan and vents to keep it from overheating There is also a cooling vent on each side panel of the instrument Refer to the Ventilation topic for details OPS 3190027 Rev 0 December 2008 Return to Section Topics 1 5 Section 1 Getting Started Models 12010 and 12020 Pulse Pattern Generator User s Manual Power up The Model 12010 12020 operates from a single phase line voltage in the range of 100 V to 240 V at a frequency of 50 Hz or 60 Hz Line voltage and line frequency are automatically sensed there are no switches to set Check to ensure the operating voltage in your area is compatible CAUTION Operating the instrument on an incorrect line voltage may cause damage possibly voiding the warranty To connect the instrument to line power and turn it on
105. tor User s Manual Models 12010 and 12020 Pulse Pattern Generator User s Manual Section 3 Pulse Pattern Generators Operation Pulse Pattern Burst External Width operation After making connections to the Model 12010 12020 refer to Section 2 the fundamental steps to operate Pulse Pattern Burst and External Width modes are as follows 1 Select the operating mode by pressing the MODE key 2 Configure the time and voltage parameters for the selected mode 3 Configure triggering 4 Enable the channel s and trigger the start of pulse output 5 When finished disable the output s After selecting the operating mode set the programmable parameters for that mode using the soft keys navigation wheel and cursor keys or the keypad Refer to Pulse pattern parameters for instruction NOTE The Pulse pattern parameters section contains details about all settable parameters Each parameter is listed alphabetically by its soft key name The two steps to select the operating mode are presented in Figure 3 1 Figure 3 1 Select operating mode MODE Menu Pulse Mode p MODE TIME Mode Pulse VOLTS JITTER PAT BURST UTILITY Trigger Cont TRIGGER HELP Pattern Burst ExtWidth O Q O e e Menu keys Located next to the keypad A Press the MODE key to select the MODE menu Selected operating mode B Press a soft key to select the desired operating shown in this
106. u JITTER Det Enable Set the deterministic jitter to be enabled or disabled Enable deterministic jitter only when the Trigger Source is Continuous Enable settings Enable or Disable Enable Random Jitter Enable Operating Mode All Menu JITTER Ran Enable Set the random jitter to be enabled or disabled Enable Random Jitter only when the Trigger Source is Continuous Enable settings Enable or Disable Enable Sine Jitter Enable Operating Mode Pulse Pattern or Burst Menu JITTER Sin Enable Set the sinusoidal jitter to be enabled or disabled Enable Sine Jitter only when the Clock Source is Internal and the Trigger Source is Continuous Do not enable Sine Jitter and SSC simultaneously Enable settings Enable or Disable Enable SSC Enable Operating Mode All Menu TIME SSC Enable When SSC is enabled the internal clock is frequency modulated with a triangle function SSC and Sinusoidal Jitter can not be enabled simultaneously Frequency and Amplitude may be adjusted Enable settings Enable or Disable Ext External Operating mode All Menu JITTER External jitter is phase modulation from an external source connected at Delay In 1 or Delay In 2 on the front panel External jitter can be enabled on one or both channels Refer to the Jitter insertion section for detailed range specifications Channel Select Channel 1 or Channel 2 Enable Set the external jitter to be enabled or disabled Enable
107. uence LAYer SOURce Parameters IMMediate MANual EXTernal REMote The instrument provides the following trigger sources IMMediate The generated signal is always triggered pulses bursts or patterns are produced continuously MANual Manual triggering Press the ManTrg soft key to generate one trigger event REMote Remote triggering Trigger events are provided by the GPIB or USB port OPS 3190027 Rev 0 December 2008 Return to Section Topics 4 13 Section 4 Remote Programming Default Query Description Example ARM TERM Parameters Suffix Default Query Description Example Models 12010 and 12020 Pulse Pattern Generator User s Manual EXTernal External triggering Trigger events are provided by the signal applied to the Ext In port Threshold termination voltage and Edge polarity of the Ext In port are adjustable Range coupling Enable Disable for SSC Sinusoidal jitter Delay In Random jitter Deterministic jitter These parameters may be enabled only if the Trigger source is set to IMMediate IMM ARM SOUR Use this command to select the triggering source of the instrument ARM SOUR MAN Select manual arm source ARM SEQuence LAYer TERM Numeric V with engineering prefixes 0 mV ARM TERM Use this command to program the Ext In termination voltage ARM TERM 1 2V Set Ext In termination voltage to 1 2 V DIG PATT LENG DIGital
108. v Type Edge PAT BURST Edit Disabled Output Event Pattern Burst Bit Number 8 JITTER Sinusoidal Jitter Length 8 bits Enable Disabled Type Data Frequency 1 MHz Ch1 Format NRZ A s 600 ps pk pk Ch 2 Format NRZ A UI 50 MUI ms PRBS Length 5 Deterministic Jitter Burst Period 8 Enable Disabled Ch 1 Burst Count 2 A s 6 67 nS gk pk Ch 2 Burst Count 2 A VI 100 MUI pk pk UTILITY Clock Input Frequency 1 MHz Termination AC Function Sine Termination Voltage 0 mV Random Jitter Slope Positive Enable Disabled External Input A s 3 33 NS rms Slope Positive A VI 50 mUlpk pk Threshold 0 mV External Delay Termination Voltage 0 mV Enable Disabled Clock Source Internal Hold Ul Atthe factory the GPIB is selected as the remote programming interface and the address is set to 10 Changes to the interace or address are saved in Non Volatile Memory and will be recalled on subsequent power up You must cycle the power after changing any communication parameters to ensure that such parameters are applied 2 16 Return to Section Topics OPS 3190027 Rev 0 December 2008 In this section Section 3 Pulse Pattern Generators Operation Topic Page Pulse Pattern Burst External Width operation e 3 3 POMS 90 gt EE PA 3 4 Bist mode EE AA AA 3 6 SUS LL EE o a 3 7 External Width Mode creissien niinen aanne 3 9 Saving and recalling instrument setupe 3 10 SNEK EE 3 10 Recalling aapi ie AGA aid
109. x Time Parameters 66 67 ns 15 MHz i Not Drawn To Scale Trigger i Ampl Amplitude sef mess 50 mVpk pk E lie Leading Edge Trailing Edge lt 200 ps fixed lt 200 ps fixed The basic pulse level timing and triggering parameters are summarized in Table 2 1 and Table 2 2 The last column Independent channel settings in the two tables does not apply to single channel models OPS 3190027 Rev 0 December 2008 Return to Section Topics 2 7 Section 2 Setup and Pulse Generation Settings Models 12010 and 12020 Pulse Pattern Generator User s Manual 2 8 Pulse level parameters The following parameters Table 2 1 are found under the Volts menu Table 2 1 Pulse level parameters Indepen dent chan nel settings 12010 2and 12020 2 Parameter Description only High level Configure the pulse high low levels by setting the high level and the Yes Low level low level within the level window 2 V to 3 3 V Changing the high or low level will change the amplitude and offset Amplitude Amplitude is the low to high magnitude of the pulse Yes Amplitude setting 50 mo px to 2 5 Vpk pk Changing the amplitude will change the high and low levels Offset is not affected Offset Offset is the mean average value of the high and low levels Yes Offset high level low level 2 The offset can be set to any value that allows the pulse to fit within the level window

User Manual Model 12010/20

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