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1. Setting up the instrument Burst Mode se Stop ihe ioe D d 20 Ethernet CONNECtON COMMUNICATION ccccccecccvesccccesseessseesevscesscsasessssusesessaesseusseccsuseceseasececssseeesaas 20 Web Page control communication ccccccccscceccessevscenesseceseesseesecceeseceeeseceeceseeeeeeaeeaeeeaeseaeeaeeeeeeaeeeeees 27 ANNEX A 28 ANNEX B 63080 30 Berkeley Nucleonics Corp 2 Model 745 User Manual Model 745 Digital Delay Generator 2013February 14 EDITION Description 02 06 2011 Creation 06 04 2012 Modification 29 07 2013 Modification new functions 11 12 2013 Modification reviewed by J L Berkeley Nucleonics Corp 3 Model 745 User Manual Model 745 Digital Delay Generator 2013February 14 1 GENERAL INFORMATION The MOD745 device provides four high precision independent delay channels Access to these four outputs T1 T4 is given by four BNC connectors on the front panel The achieved delay resolution is about 0 25ps and trigger to channel jitter is less than 25ps Annex B T1 T4 can deliver up to 5V 2ns rise time max Annex A into 500 Amplitude and width are adjustable on each output channel either programmed from the front panel or via Ethernet ATO output pulse is also available It gives a time reference fo
2. Form Description Parameter RST value Example RELATIVE DELAY Syntax Berkeley Nucleonics Corp Set external trigger source BTRIG EXT Query BTRIG gt BTRIG EXT PERIOD PB T PERIOD PB Set amp Query Set Burst period PB T period in ns Sns resolution 1000 ns to 1s PERIOD PB 1000 PERIOD PB gt PER 1000 BPULSE N BPULSE Set amp Query Set the number of pulses in a burst N Number of pulses 2 to 275 1 depending on trigger source period and Burst period BPULSE 1000 BPULSE gt BPULSE 1000 GGLOBAL mode GGLOBAL Set amp Query General Gate mode status mode OFF ON and CH Set inhibit all outputs GGLOBAL ON Query GGLOBAL gt GGLOBAL ON GCHAN Tx value GCHAN Tx Set amp Query Individual channel Gate mode status Tx T1 toT 4 or 1 to 8 for 8 channel Value ON OFF Set T1 channel mode On GCHAN T1 ON GENERAL GATE MODE has to be set to CH to activate this setting Query GCHAN T1 gt GCHAN T1 ON DELAY Tx Ti delaytime 21 Model 745 User Manual Model 745 Digital Delay Generator November Form Description Parameter RST value Specified limit Example ABSOLUTE DELAY TRIG Syntax Form Description Parameter RST value Specified limit Example Syntax Form Description Parameter RST value Example AMPLITUDE Berkeley Nucleonics Corp Syntax Form Description Parameter RST value
3. Model 745 DIGITAL DELAY PULSE GENERATOR USER MANUAL Ver 4 0 Nov 2013 hi Ae The Model 745 Four high resolution delay channels 0 25ps delay resolution lt 25ps RMS jitter max 5ps for short delay 20s delay range relative absolute reference Three trigger sources external internal or command Positive or Negative trigger slope Single Repetitive or Burst trigger mode Gate mode Tunable output magnitude 2 5V width 100ns 10us 50 Q load TO reference output Ethernet interface Web page Options 4 auxiliary high resolution delay channels 1 25ns 2 to 5V Amplitude but common tuning Clock output Gate input High precision internal clock OCXO 50ppb The MOD745 digital delay generator provides four independent high resolution digital delay channels The rms jitter between the trigger and any outputs is 25ps delay x 107 max which ensures a high performance delay The device can be triggered by different ways External trigger via a BNC input Internal trigger and Software command trigger each one with repetitive single and burst trigger modes Model 745 Digital Delay Generator 2013February 14 7 10 CONTENT GENERAL INFORMATION ccccssssssssssssscssssssesessscsssrsnsssssssssssnssscsssssssensessasscsesessssasseseeeseaes 4 Whatido you Need to get stdrted ete pter o Bird ae e Spr a EE 5 Unpackine de nr Operating temperature SELF HOST The device soft
4. Specified limit Example DELAY Tx Set amp Query Delay time of channel Tx relative to channel Ti reference channel is set to delaytime picosecond Tn channel number 1 to 4 or 1 to 8 for 8 channel Ti channel number 0 to 4 or 0 to 8 for 8 channel Tn and Ti have to be different delaytime picosecond delay 0 to 19 999 999 999 999 picoseconds Set program ins to channel 2 relative to channel 1 DELAY T2 1000 75 Query DELAY T2 gt DELAY T2 T1 1000 75 Note By using the Web page or Telnet command to configure the device user can specify delay with 0 25ps resolution ABSDELAY Tx Query Absolute delay time of channel Tx in ps Tx channel number 1 to 4 or 1 to 8 for 8 channel Query ABSDELAY T2 gt DELAY T2 5000 75 TRIG Tx DEC TRIG Tx Set amp Query Tx trigger mode selection set trigger mode to internal external manual or off Tx channel number 1 to 4 or 1 to 8 for 8 channel DEC trigger mode IN1 IN2 EXT SS1 SS2 SSE LSS BST OFF off Internal mode to channel 2 TRIG T2 IN1 Query mode to channel 2 TRIG T2 gt TRIG T2 IN1 AMPL Tx mV AMPL Tx Set amp Query Tx channel voltage level setting Tx channel number 1 to 4 or 1 to 8 for 8 channel mV Volt Amplitude in milliVolt 2000 to 5 000 mV 2 5 V to channel 4 AMPL T4 2500 Query mode to channel 4 AMPL T4 gt TRIG T4 2500 22 Model 745 User Manual Model 745 Digital Delay Generator November W
5. gate 8 T3 T3 channel settings trigger amplitude width delay reference gate 9 T4 T4 channel settings trigger amplitude width delay reference gate 10 T5 optional T5 channel settings trigger amplitude width delay reference gate 11 T6 optional T6 channel settings trigger amplitude width delay reference gate 12 T7 optional T7 channel settings trigger amplitude width delay reference gate 13 T8 optional T8 channel settings trigger amplitude width delay reference gate 14 REF Dealy reference summary absolute TO or relative Tx reference 15 GATE Gate setting summary 16 Trig Ext External trigger settings threshold value polarity and prescaler value 17 Freq Period 1 Frequency or Period of internal trigger generator 1 18 Freq Period2 Frequency or Period of internal trigger generator 2 19 Burst Settings Burst mode settings 20 Trigger Manual trigger to launch single shot triggers SS1 SS2 SSE or LSS trigger source 21 Store Recall To store recall up to 4 personal MOD745 configuration 22 Status Display trigger status of channels appears when the channel is active Under item 2 we get information about the clock used by the device and device errors that could occur such as PLL or Oscillator error Under item 3 we get the following sub menu Gate Mode SUB MENU Description and settings Displayed name Gate Mode RETURN MENU To select the Gate mode General gate to inhibit every outputs C
6. 5ns max 2ns typical Connector BNC Berkeley Nucleonics Corp 6 Clock Input Frequency 10 or 80 MHz 50 duty cycle Ask factory for custom clock frequency User Memory Up to 4 sets of MOD745 parametes can be stored recalled via Front Panel or Telnet General specifications Size 215 x 245 x 135 mm Power 50 W 110 to 240 V LEDs Orange Trigger on Software Control panel Web page from embedded web server for IE Firefox or Chrome Options 745 8C 4 auxiliary delay output extension Delay Channels 4 independent delay outputs Range 0 to 20 seconds Resolution 1 25ns Jitter 50ps RMS delay x 107 External trigger to any output Accuracy lt 1ns delay x 10 Output Annex A Amplitude 2 to 5V Width 100 ns to 10ms 5ns resolution Load 500 Rise and Fall time lt 5 ns Connector BNC on rear panel C Clock output 10MHz 1 V square G Gate input O OCXO 50ppb Model 745 User Manual Model 745 Digital Delay Generator November 3 FRONT PANEL OVERVIEW The Model 745 front panel is composed of several kinds of elements the user interface which consists of a keypad and an LCD display that allows the user to program various settings and to interact with the device in local mode 4 status LEDs 5 BNC connectors Comment J L1 5 ms us ns ps TRIG IN A ME Vh AA e Figure 1 Front panel LCD screen A 2 line x 20 character module displays parameters for progra
7. User Manual Model 745 Digital Delay Generator November What do you need to get started To set up and use the MOD745 you need the following items e MOD745 Digital Delay Generator e MOD745 User Manual Unpacking Caution The MOD745 is shipped in an antistatic package to prevent electrostatic damage to the device Electrostatic discharge ESD can damage several components on the device Remove the device from the package and inspect the device for loose components or any sign of damage Notify BNC if the device appears damaged in any way Caution Before device plug in be sure to set the right voltage with the line voltage selector It operates from 90V to 240 V Do not apply any voltage to either the shields or the output BNCs Operating temperature The MOD745 can be operated where the ambient air temperature is 10 C to 35 C and can be stored in ambient temperature from 10 C to 60 C The MOD745 is cooled by air circulation Self test The unit model firmware version serial numbers and the result of self test procedure will be displayed one minute after power on After 30s if the test is good then self test disappears and the device can be used If the test is not ok then self test stays displayed and the device is locked The device software Labview Vi s are provided with the MOD745 device They allow users to control and or configure the equipment as planned These Vis can be integrated in a top level Vi where
8. and clock output connectors are available The CLK IN connector accepts either 10MHz or 80MHz or custom frequency clock frequency The optional clock output CLK OUT comes from the CLK IN connector or from the internal oscillator if clock in signal not present The four optional output T5 T8 connectors are 50O impedance with adjustable amplitude delay and width Ethernet Port A RJ45 Ethernet connector is available to control the Model 745 with a computer See Chapter 8 Programming for command syntax USB Port Option A female USB connector can be available allowing computer communication with the MOD745 Berkeley Nucleonics Corp 8 Model 745 User Manual Model 745 Digital Delay Generator November 5 MENU STRUCTURE NAVIGATING THE MOD745 A three level Menu is available e AMenu to display settings e Sub Menus to select parameters to set e ACursor Mode to modify selected parameter Without option Here is given a presentation of the display menu for a standard 8 Channel Unit MENU Menu n Displayed Description name 1 MOD745 Reference of the unit name serial number and software reference 2 XXXX General state 3 Gate Mode Setting of Gate mode 4 TO Settings of TO channel trigger output pulse amplitude and Width 5 Clock In Input clock setting 10 or 80MHz 6 channel settings trigger amplitude width delay reference gate 7 T2 T2 channel settings trigger amplitude width delay reference
9. information CLK INTERNAL EXTERNAL TRIG trigger channel 1 to 4 states PLL PLL oscillator state OSC gated oscillator state Off STAT CLEAR clear the information STAT CLK gt STAT CLK INTERNAL STAT TRIG gt STAT TRIG 1 0 0 1 Channel 1 and 4 trig on mode internal external or manual STAT PLL gt PLL oscillator default STAT OSC gt gated oscillator default IP x X X X IP Set amp Query IP Adress X X X X IP address Off IP 172 17 23 6 IP gt IP 172 17 23 6 NM x x x x NM Set amp Query Net mask Address X X X X NW address Off NW 255 255 0 0 NW gt NW 255 255 0 0 GW X X X X GW Set amp Query GW Address X X X X GW address Off GW 172 17 23 6 GW gt GW 172 17 23 6 25 Model 745 User Manual Model 745 Digital Delay Generator November About Telnet Ports 3 ports can be used to configure the communication link and or the pcontroller used to communicate e Port 4000 general communication port e Port 4001 re initialization communication port Used to reinitialize the communication between uC and PC Used in case of frozen device e Port4002 force reset the uC Used in case of frozen device Berkeley Nucleonics Corp 26 Model 745 User Manual Model 745 Digital Delay Generator November Web Page control communication The user can open a web page to control the MOD745 device via Internet Explorer Firefox or Chrome last versions supported To
10. must be sent to a WEEE recycling center Berkeley Nucleonics Corp 32 Model 745 User Manual
11. several devices are controlled The communication is done with an Ethernet connection Power fuses The MOD745 is protected against short circuit by means of one fuse according to nameplate of the power supply F2 5H250V RAM with battery back up The MOD745 has a RAM with battery backup in which settings of the instrument can be stored Lithium battery ref 2032 Berkeley Nucleonics Corp 5 Model 745 User Manual Model 745 Digital Delay Generator November 2 SPECIFICATIONS Delays Channels 4 independent delay outputs Range 0 to 20 seconds Resolution 0 25 ps Jitter 25ps RMS delay x 107 external trigger to any output Annex B 20ps RMS delay x 10 Channel to channel Annex B lt 5ps RMS for short delay Channel to channel Accuracy lt 250ps delay x 10 Time base 200 MHz 0 5 ppm Trigger source Internal 2 Timers tunable in Hz or ns 1Hz to 1MHz 1Hz resolution 1us to 4s 5 resolution External Repetition rate 1MHz Prescaler 1 to 2 1 Trigger level from 0 1 to 5V Internal load 500 Positive or negative slope Minimum trigger delay 60ns Trigger mode Single repetitive or burst Burst specs Pulse number 2 to 2 1 Period 1000ns to 1s Gate Mode General or Individual 2 settings Gate source Active high Rep rate 100kHz Output T1 to T4 Annex A Amplitude 2 to 5V 0 1V resolution Width 100ns to 10 us 5 ns resolution Load 500 Rise time 2ns max 900ps typical Fall time
12. the end of sequence after the last delayed pulse the delay generator is ready for repetitive trigger mode When a sequence is in progress the instrument does not respond to a trigger event The MOD745 must be configured trigger delay etc before starting any sequences TRIG IN I Delayed outpLt in repetitive mode Repetitive mode Presc value 1 Delay Soft Trigger command Single Shot Delayed output mode in single shot Dela mode d Async Single Shot mode Figure 6 External Trigger Timing In response to an input pulse the board can generate a single delayed output single shot or repetitive delayed output repetitive mode with a Trig In prescaler value 1 As explain before the single shot pulse is conditioned by the soft trigger command The use of the Prescaler value is depicted on Figure 7 T1 Channel trigger source is set to external trigger Berkeley Nucleonics Corp 14 Model 745 User Manual November Model 745 Digital Delay Generator TRIG IN PRESC Value T1 Trig EXT Prescaler value Figure 7 Model 745 User Manual 15 Berkeley Nucleonics Corp Model 745 Digital Delay Generator November Timing principle using internal trigger Gate In active High With Output Inh active on T1 IN1 IN2 I i I Repetitive Delayed output mode in repetitive T1 mode Delay Repetitive mode T2 Figure 8 Internal Trigger Ti
13. FREQ 1000 PERIOD Syntax PERIOD Px T PERIOD Px Form Set amp Query Description Set internal mode period Parameter Px P1 P2 T period in ns Sns resolution RST value Specified limit 1000ns to 4s Example PERIOD 1 1000 PERIOD P1 gt PER 1000 CLKEXT Syntax CLKEXT F CLKEXT F Form Set amp Query Description Set external PLL frequency Parameter F external PLL frequency CLK10 CLK80 RST value Specified limit Example CLKEXT CLK10 CLKEXT gt CLKEXT CLK10 RUN Syntax RUN Form Set Description Software trigger Parameter RST value Example RUN STORE Syntax STOREn Form Set Description To store MOD745 current configuration Parameter n configuration number RST value Specified limit 0to3 Example STORE 1 RECALL Syntax RECALL n Form Set Description To recall a MOD745 configuration previously stored Parameter n configuration number Berkeley Nucleonics Corp 24 Model 745 User Manual Model 745 Digital Delay Generator November STAT IP address RST value Specified limit Example Syntax Form Description Parameter RST value Example Syntax Form Description Parameter RST value Example Net mask address Syntax Form Description Parameter RST value Example GW address Berkeley Nucleonics Corp Syntax Form Description Parameter RST value Example 0to3 RECALL 1 STAT CLEAR STAT xxx Set amp Query Equipment
14. IDTH Syntax WIDTH Tx W WIDTH Tx Form Set amp Query Description Channel Tx width setting Parameter Tx channel number 1 to 4 W width ns RST value Specified limit Channel TO to T4 100 to 10 000 ns Channel 5 to T8 100 to 10 000 000ns Example 250 ns to channel 4 WIDTH T4 250 Query mode to channel 4 WIDTH T4 gt WIDTH T4 250 EXT TRIG THRESHOLD Syntax STRIG mV STRIG Form Set amp Query Description Set and Query trigger threshold voltage Parameter mV Threshold level in milliVolt RST value Specified limit 100 to 5 000 mV Example 2 5 V STRIG 2500 Query mode STRIG gt 2500 EXT TRIG POLARITY Syntax POLAR Edge POLAR Form Set amp Query Description Edge Rising Edge or Falling Edge Parameter Edge RE or F E RST value Specified limit R EorF E parameters Example Falling Edge POLAR F E Query mode POLAR F E EXT TRIG PRESCALER Syntax TPRESC Value TPRESC Form Set amp Query Description Set prescaler value to divide Trig In source frequency Parameter Value Trig In prescaler value RST value Specified limit from 1 to 25 1 Example 4 TPRESC 4 Query mode TPRESC 4 FREQUENCY Syntax FREQ Fx F FREQ Fx Form Set amp Query Berkeley Nucleonics Corp 23 Model 745 User Manual Model 745 Digital Delay Generator November Description Set internal mode frequency Parameter Fx F1 F2 F frequency Hz RST value Specified limit 1 Hz to 1 MHz Example FREQ F1 1000 FREQ F1 gt
15. access the web page the IP address of the device has to be typed in the navigator address field Once that is done the user should access to the following page BNC Berkeley Nucleonics Corporation MOD fi 4 5 Serial Number 1 01 Precision Instrumentation Since 1963 Conf Ref Inh Delay Width TO OFF 500 ns MB 0 00 ps 5000 mV 200 ns lil Tol E 0 00 ps 5000 mV 200 ns fal T3 OFF To 0 00 ps 5000 mV 200 ns Bl T4 ofr v MN 0 00 ps 6000 mV 200 ns fl T5 ofr r MN 0 00 ps 6000 mV 200 ns M 76 orF MB 0 00 ps 5000 mV 200 ns ll T7 ofr To i 0 00 ps 6000 mV 200 ns Bl dre us Ts orr z Toz MN 0 00 ps 6000 mV 200 ns 8 Ext Polarity Et Ext Prescaler 1 Gate Mode OFF CODE Ratel 1000 Hz x Burst Trig OFF Burst Period 1000 ns 80 MHz v Rate2 1000 Hz Burst Pulses 5 Figure 10 Configuration page From that page the user can configure each output pulse amplitude width trigger delay inhibit and delay reference trigger settings internal frequencies external clock and burst mode On the first setting change the user will be asked for Login and Password Default Login BNC Default password bnc Status LEDs indicate which outputs are active or not and Fault LEDs warn the user in c
16. ain menu MENU Item 417 and 18 are specific items setting of frequency or period is available for each internal source use right or left arrow button to access one or the other The period setting provides a resolution of 5ns and the frequency setting a resolution of 1Hz By pressing the ESC button the user can restart internal frequencies when item 17 or 18 is displayed Under item 19 we get the following sub menu Burst Mode SUB MENU Displayed Description and settings name Burst Trigger To select the trigger source Int Ext or manual Pulse Number To select the pulse number in each burst to generate from 2 to 219 1 Pulse Period To select the period between burst pulses from 1000ns to 1s RETURN To return to main menu MENU Under item 421 we get the following sub menu allowing users to store recall MOD745 parameters Store Recall SUB MENU Displayed Description and settings name Store x To store current MOD745 configuration in conf x x20 to 3 Recall x To recall conf x MOD745 configuration RETURN To return to main menu MENU To refresh the channel status item 22 a press on the OK button is needed IP Address SUB MENU The IP configuration menu can be accessed by a double press OK button on Main menu item 1 Displayed Description and settings name IP ADRESS Set the instrument s IP address NET MASK Set the instrument s IP mask GATEWAY Set the instrument s IP gateway ADRESS USE DHCP YES automatic IP add
17. ase of errors To refresh led status the user has to click on one off these LEDs The manual trigger button is used to trigger a channel sets to SS1 SS2 or LSS Single shot 1 amp 2 and Local Single Shot And at last the user can access to the password setting page by typing in the address field Device IP passwd htm BNC NC Model 745 Berkeley Nucleonics Corporation erial Number 12345 Max 15 characters Password New password Confirm new password Figure 11 Password page Berkeley Nucleonics Corp 27 Model 745 User Manual Model 745 Digital Delay Generator November 9 ANNEXA High precision and auxiliary pulse results appear on the following figures Ampli2 4 81V AWidthi2 No edges Risej2 940ps Fall 2 No edges race and set file qf i e 00 Press to go Press to Sav R Formats ae E mm Wiet2 No edges Rise 2 No edges Fali2 40ns NN Press to dr iv Berkeley Nucleonics Corp 28 Model 745 User Manual Model 745 Digital Delay Generator November Ampli2 5 16V D Press to p e dr ivel Ampli2 5 03V i g Fall 2 y No edges Press to go e ived Figure 13 Auxiliary pulse Berkeley Nucleonics Corp 29 Model 745 User Manual Model 745 Digital Delay Generator November 10 ANNEX B The rms jitter for Internal and External source are depicted on figure 11 and 12 It is given for different delay values
18. e in the main menu of the MOD745 device and in each Tx sub menu 2 different modes can be selected in the general Gate menu e 1 GENERAL mode to inhibit simultaneously all channels e 1 CHANNEL mode to inhibit independently each channel by setting in each Tx sub menu the desired Gate state 1 active 0 inactive Configuration summary On Figure 5 is presented a functional diagram of the device The different operation modes are illustrated Internal CLock External Clock Thres Freq Per 1 Pol Ext Trigger dd mE Prescaler Freg Per2 i Manual XOR P OR Trigger lie Per Singl Recurrent Hi Burst 8 4 Nbr Pc Bc c eh c Gate i General CH f i i Reference n Width Ampl Delay J Abs Rel i 5 be ee Figure 5 Functional Diagram Berkeley Nucleonics Corp 13 Model 745 User Manual Model 745 Digital Delay Generator November Timing principle using external trigger When the device is in a rest state no current output signals a rising edge on a trigger starts a delay sequence The trigger comes from TRIG IN or from a software command trigger depending on the selected channel source The sequence includes two external trigger phases e After an insertion delay 60ns a pulse appears on each channel after a specified delay e At
19. f Channel T1 to T8 RETURN To Return to main menu MENU Note TO doesn t allow Delay changes It allows the user to configure each output pulse by selecting its amplitude width and trigger source Internal and External sources cannot be set at the same time for two different channels Note An output delay with 0 25ps resolution can only be configured by telnet command or via the web page Trigger Output pulse Channel N source amplitude width delay Comment J L2 newer image recommended Figure 3 T1 item example With standard 4 channel unit The item 10 11 12 and 13 will be skipped and will not be displayed Item 14 displays a summary of each channel delay reference setting e g for Channel T1 TO for absolute reference and T2 to T8 for relative reference The channel delay reference is set in its specific setting menu Item 15 displays a summary of the channel gate state 1 active and 0 inactive Under item 16 we get the following sub menu allowing users to configure the external trigger Berkeley Nucleonics Corp 10 Model 745 User Manual Model 745 Digital Delay Generator November Trigger SUB MENU Displayed Description and settings name Polarity To trig on rising edge or on falling edge value of the Trig Ext input Threshold To adjust the threshold value of the Trig Ext input Prescaler To prescale the Trig Ext input frequency by a factor N N 1 to 215 1 RETURN To return to m
20. fined by its trigger source internal external software single shot or repetitive its pulse number in each burst and the period between pulses A pulse train can be independently set and defined on each channel amplitude width and delay are defined in the corresponding channel menu An example of Burst mode is depicted on Figure 9 To generate a burst on a specified channel first the user has to configure the Burst mode itself trigger pulse number and pulse period and then select Burst BST in the trigger source selection of the concerned channel Output channels ATO output pulse is the time reference of the delay output It is generated for each selected trigger Each output delayed pulse values T1 to T4 can be independently tuned in level absolute or relative delay and width All values delay delay reference level width gate are saved in memory except the trigger source Each output delayed pulse values T5 to T8 can be independently tuned in absolute or relative delay and width All values delay delay reference width are saved in memory except the trigger source Calibration parameters are saved onboard After the power on all trigger sources are off It has to be noticed that several output channels can only be triggered by the same source that is to say an internal OR external source Gate mode Each channel can be independently or simultaneously inhibited by the Gate in input signal A Gate menu is availabl
21. hannel gate to set individual behavior for each channels independent Gate modes set in each Tx sub menu To return to main menu When items 4 TO and 6 to 13 T1 to T8 are displayed the ESC button allows the user to launch Single Shot triggers if selected for the current channel Berkeley Nucleonics Corp 9 Model 745 User Manual Model 745 Digital Delay Generator November Under item 4 and 6 to 13 we get the following sub menu 8 SUB MENU Displayed Description and settings name TX To select Trigger source OFF Trigger signal is inhibited TRIG IN1 Trigger signal coming from internal frequency 1 IN2 Trigger signal coming from internal frequency 2 EXT Trigger signal coming from the front panel TRIG IN SS1 Single Shot trigger synchronous with internal freq 1 SS2 Single Shot trigger synchronous with internal freq 2 SSE Single Shot trigger synchronous with trigger input LSS Software Single Shot trigger launched by item 20 or ESC button when Tx displayed BST Pulse train Trigger sync With internal freq or trigger input TX RET To select the channel delay reference TO to T8 TX To adjust Output pulse delay of channel T1 to T8 1 resolution display Delay TX To adjust Output pulse amplitude of channel T1 to T8 Ampl TX To adjust Output pulse width of channel TX Width TX Gate To set Channel Gate mode On or Off available if general Gate mode is set to Channel Gate o
22. he Trig Ext input signal frequency To get this feature the user has to select EXT as trigger source on the device via the front panel or via remote control web page Ethernet link If the internal trigger source is selected the user can specify the needed trigger source via the front panel or via remote control web page Ethernet link 2 frequency generators derived from input clock can be used as repetitive triggers IN1 and IN2 corresponding to programmable Frequency 1 and 2 The use of internal trigger is depicted on Figure 8 Frequency generation restarts when a push on the ESC button is detected while Frequency Period menu is displayed Note The internal period P1 et P2 can only be increment by step of 5ns Single Shot triggers 3 single shot modes are available one synchronous to the external source SSE one to an internal source SS1 synchronous to Frequency 1 SS2 synchronous to Frequency 2 and the last an asynchronous one LSS Each single shot mode is triggered by a software command Software trigger command is available either via remote control or via front panel by pressing ESC button when items 6 to 13 are displayed or by using item 20 Single shots synchronous to external source is depicted on Figure 6 The same principle can be applied to any of the internal sources Berkeley Nucleonics Corp 12 Model 745 User Manual Model 745 Digital Delay Generator November Burst mode The Burst mode is de
23. ials for this part is below the limit required in SJ T 11363 2006 X Indicates that the toxic or hazardous substance contained in at least one of the homogeneous materials used for this part is above the limit requirement in SJ T 11363 2006 Product Marking Explanations In accordance with the requirements specified in SJ T 11324 2006 all BNC EIPs sold in the People s Republic of China are marked with pollution control marking The following marking applies to BNC products 40 This marking indicates that some homogeneous substance within the EIP contains toxic or hazardous substances or elements above the requirements listed in 5 11363 2006 These substances are identified in Table 1 The size or function of some products may prevent them from being directly marked These products still meet SJ T11364 2006 requirements and their marking information is covered by this document Environmentally Friendly Use Period The number in the marking shown as 40 in the illustration above refers to the EIP s environmentally friendly use period EFUP The EFUP is the number of years from the date of manufacture that toxic Berkeley Nucleonics Corp 31 Model 745 User Manual Model 745 Digital Delay Generator November or hazardous substances or elements contained in EIPs will not leak or mutate under the normal operating conditions described in the EIP user documentation resulting in any environmental pollution bodily inju
24. l 5 00 V T1 Ampl 5 00 V Ampl 4 00 V T1 Width 200 ns T1 Width 200 ns T1 Width 200 ns T1 Width 1200 ns T1 Width 1200 ns T1 Width 1000 ns T1 Width 1000 ns yal Trigger OFF Trigger IN1 Trigger IN1 Model 745 User Manual Model 745 Digital Delay Generator November As soon as T1 is set to IN1 the front panel LED of T1 output will be on In fact it will blink at the output pulse rate in that case at INternal frequency 1 1000Hz indicating that there is an output signal on T1 connector With an oscilloscope you can check the channel T1 Measurement should be Rectangular shape with repetitive frequency 21000 Hz Amplitude 4 0V Width 1 0 us Setting up the instrument Single shot mode The procedure explained before can be followed up to the trigger choice 3 single shot modes external SSEXT internal SS1 and SS2 asynchronous LSS can be set Once the single shot trigger mode is set the user has to send a software command to trigger the single shot output pulse To send this software command 3 ways are available e Via the front panel o Inthe Trigger menu item 16 of the general menu by pressing the Ok button o If item 6 to 9 are displayed by pressing the ESC button e Via a telnet command by sending the RUN command to the device e Via the web page by pressing the manual trigger button in the Trigger menu Setting up the instrument Burst Mode The aim is to set channe
25. l T1 in Burst mode to get e a5V 200ns width Ons delay pulse e 100Hz IN1 trigger source e Burst period 100000ns pulse number 10 First the user has to configure the F1 frequency to 100 Hz and then the Burst Mode itself That is to say set in the Burst Mode menu item 15 in the main menu e Burst Trigger IN1 e Burst Period 100000 e Burst pulse number 10 Once this has been done the user has to set the width delay and trigger source BURST in the T1 channel sub menu The device will start to generate the requested pulse train Stop the generator To stop the generation of that repetitive pulse you have to set T1 trigger to OFF value This will switch off the corresponding LED With an oscilloscope you can check if the output signal is switch off Berkeley Nucleonics Corp 19 Model 745 User Manual Model 745 Digital Delay Generator November 8 PROGRAMMING Ethernet connection communication Generality For connection over a LAN you have to do the following e Connect the instrument to the LAN physically e In the graphical user interface specify the LAN address e Onthe control PC enter the instrument s IP address e After the connection has been established the following commands can be used to modify the settings o Set sthe instrument s IP address with IP XXX XXX XXX XXX Query s the instrument s IP address with IP IP XXX XXX XXX XXX Set s the instrument s IP mask with NM XXX XXX XXX XXX Query s the i
26. ming In Internal trigger mode two tunable frequencies are available IN1 and IN2 On Figure 8 T1 output uses IN1 trigger with a specified delay of Ops and T2 output uses IN2 trigger with a non null delay The MOD745 must be configured trigger delay etc before starting any sequences The individual Channel Gate Mode is also depicted on Figure 8 It is obtained by setting general Gate Mode to CHANNEL and T1 Gate mode to ON The result is that the Gate In signal inhibits the trigger source of the channel T1 that is to say IN1 in that case The width parameter doesn t appear on these two Figures Figure 6 Figure 8 It has to be noticed that the frequency f used as repetitive input trigger internal or external and the maximum width of a corresponding output channel 7X are linked by 1 MaxWidth TX axWi af Berkeley Nucleonics Corp 16 Model 745 User Manual Model 745 Digital Delay Generator November Timing principle using Burst mode Each Channel can be independently set to Burst mode In the following example Burst trigger has been set to IN1 Burst pulse number to 5 and Burst period to TB Gate In With Output Inh active on T1 IN1 Ttrigger Burst mode T1 LLLA FTB Pulse Nbr c Figure 9 Burst Mode Timing The minimal burst period value is 1000ns But it has to be noticed that this value depends on the Burst trigger period value and on the Burst pulse number T triggermin TBE 2
27. mming operations and status information Keypad A six touch keypad provides access to the configuration menu AW are used to select the line function to display After a press on the OK button up down increments decrements digit at the current cursor location lt gt are used to move the cursor position among digits sets Sub Menu and cursor mode or if this mode is already set it stores the current value and clear the cursor mode Transition from Menu item to Sub Menu item Esc clears the cursor mode without storing any value gets out from the Sub Menu item or run stop a channel pulse generation BNC Connectors One Trigger Input and 4 independent output channels are available The output voltage is tunable from 2 to 5V for each output independently and each one has to be terminated in 50Q The input Trigger BNC connector provides a trigger signal operating up to 50 kHz Status LED indicators One status LED by output channel each LED blinking at the output pulse frequency Berkeley Nucleonics Corp Model 745 User Manual Model 745 Digital Delay Generator November 4 REAR PANEL OVERVIEW All optional output connectors modules appear on that side of the device The other features are listed below Figure 2 Rear panel Power Switch The unit is turned on by depressing the Power button The MOD745 can be operated from 100 to 240V at a line frequency of 50 60Hz Optional BNCs Clock input
28. n Qa x v Internal li External 100 10000 1000000 100000000 Delay ns Figure 14 Internal and External delay Jitter 30 25 mI IH 20 a 2 515 Internal 10 E External 5 0 100 10000 1000000 Delay ns Figure 15 Zoom on delay jitter Berkeley Nucleonics Corp 30 Model 745 User Manual Model 745 Digital Delay Generator November BNC Product Information for People s Republic of China This document provides product information as required by the People s Republic of China Electronic Industry Standard SJ T11364 2006 Marking for Control of Pollution Caused by Electronic Information Products Table 1 lists toxic or hazardous substances or elements contained in Greenfield Technology electronic information products EIPs including subassemblies that exceed limits specified in 5 11363 2006 Table 1 Example Toxic or Hazardous Substances and Elements Contained in Product Component Toxic or Hazardous Substances and Elements Name Mercury Cadmium Hexavalent Polybrominated Polybrominated chromium biphenyls diphenylethers PBB PBDE Printed circuit card assembly Met etal enclosure O Indicates that the toxic or hazardous substance contained in all of the homogeneous mater
29. nstrument s IP mask with NM NM XXX XXX XXX XXX Set s the instrument s IP gateway GW XXX XXX XXX XXX Query s the instrument s IP gateway with GW GW XXX XXX XXX XXX o O O Command structure Each command description is composed at least of some of the following items all commands are used in a telnet prompt e Full command syntax e Form Set Query e M Brief description e Parameters e RST value e Specified limits e Example IDN Syntax IDN Form Query Description Queries instrument identification Answer gives instrument model serial number and firmware version Parameter RST value Example BNC MODEL 745 53901 F V1 1 Instrument model MOD745 Serial number 53901 Channel number F gt 4 active channels FF gt 8 active channels Software version 1 1 BURST TRIG Syntax BTRIG Source BTRIG source Form Set amp Query Description Trigger source for Burst mode internal external or local Parameter Source IN1 IN2 EXT SSL RST value Berkeley Nucleonics Corp 20 Model 745 User Manual Model 745 Digital Delay Generator November Example BURST PULSE PERIOD Syntax Form Description Parameter RST value Specified limit Example BURST PULSE NUMBER Syntax Form Description Parameter RST value Specified limit Example GENERAL GATE MODE Syntax Form Description Parameter RST value Example CHANNEL GATE MODE Syntax
30. r each generated delayed output This high accuracy and precision device is suitable for system experiment in science or industry that requires reliable timing solution The MOD745 also provides four optional delay channels to rear panel 5 to T8 with also a delay resolution of 1 25ns trigger to channel jitter less than 50ps with a common 2 to 5V tunable amplitude The internal timebase reference is a TCXO with a stability of 0 5ppm An optional OCXO with a 50ppb precision can replace the standard one The device offers three operating trigger modes repetitive internal or external source single shot internal external or asynchronous source and a burst mode internal external or asynchronous source A Web page accessed via Ethernet link provides a simple method to configure the settings for each channel amplitude width trigger source trigger mode and to control operation You can save and recall settings Instrument Options 745 4C Standard device 745 8C Extension to 8 channels 4 optional channels with 1 25ns resolution C Clock output G Gate input OCXO 50ppb Package Contents The box you receive should contain the following MOD745 Digital Delay Generator CD containing the PDF user manual and Labview driver Certificate of calibration BNC product For more information about BNC product see our web site http www berkeleynucleonics com Berkeley Nucleonics Corp 4 Model 745
31. ress assignment or NO for manual IP assignment LANGUAGE Select French or English language for menu RETURN To Return to main menu MENU Berkeley Nucleonics Corp 11 Model 745 User Manual Model 745 Digital Delay Generator November 6 OPERATING INFORMATION Operating Principles The principle of the programmable delay generator is described in the figure 4 below gt Gate Mode Rear panel i outputs f Drivers TO i GATE _ gt gt T1 gt Gate gt 2 Front panel Clock i T Fine Prescaler TRIG IN Controller Eight Digital Delays J Mode 1 delays 3 outputs CLKIN T4 Calibration Ethernet parameters gt Ethernet Interface Controller neioii Figure 4 Principle Trigger source can be provided by the TRIG IN input by an internal trigger by a software command trigger Repetitive single shot trigger and burst modes are available with internal and external sources An asynchronous single shot and burst mode are also available Repetitive triggers When the external trigger source is selected a rising edge on TRIG IN starts a delay sequence The sequence is depicted on Figure 6 It has to be noticed that a Prescaler value can be used to divide t
32. ry or damage to assets Original Equipment Manufactured OEM EIP SJ T11364 2006 specifies that OEM EIPs shipped by BNC should include hazardous substance information and EFUP markings Table 1 applies to products that do not supply OEM product information Manufacture Date Manufacture dates of all BNC products are encoded into the product serial number Contact your local sales office to obtain the manufacture date for your product Packaging Recycling Marks EIP packaging is marked in accordance with the needs and requirements for recycling reuse and regeneration as defined in standard GB 18455 2001 Packaging Recycling Marks As specified in SJ T11364 2006 the following packaging information may be used for instances in which it is not possible to provide recycling marks on the packaging material AN AN cS c cC CH AA Corrugated Board CFB NCFB PET HDPE LDPE Main EIP Packaging Corrugated Noncorrugated Polyester High Density Low Density Polyethylene Cardboard Fiberboard Fiberboard Strapping Polyethylene Plastic Bags Bubble Wrap Misc Cardboard Small Boxes Foams Stretch Wrap Shrink Wrap JA cS cS Cd cS cD PS OTHER WPP Plastic Mixed Natural Wood Polystyrene All Other Resins Paper Metals Pallets Clamshell and and Multi Materials Misc Paper ESD Bags Jewel Cases Pad Pack Waste Electrical and Electronic Equipment WEEE EU Customers At the end of the product life cycle all products
33. ware RAM with battery back up SPECIFICATIONS c 6 FRONT PANEL OVERYVIBENWN ose os 7 LGD SCV CON 7 Dj Z BNOS SH 7 LED esee oie dise paese 7 REAR PANEL OVERVIEW esto eo ees no Fe Ua ooo Po 8 Power SWigch saisir ie eei desee co vin tei esten e eec ye eiii eA eed Eon Optional BNCs Ethernet Port USB Port Option MENU STRUCTURE 5 9 OPERATING INFORMATION 6scsssesiscsscsssscsssssessossssseasscessssdecnstecsssescssnasestanessesseessosdeceisesdeees 12 Operating Principles gue Timing principle using external trigger Timing principle using internal trigger eese eese netten tnter Timing principle using OPERATING EXAMPLE DEL AV ANE eee ette me Initial set p iussisse eee ERR Setting up the instrument Recurrent mode Setting up the instrument Single shot
34. x Pulse Nbr So to get a TBmin 1000ns we have to configure the device as follows Trrigger Min Pulse nbr 2000ns e Pulse nbr min 2 Trrigger min 4000ns As depicted on Figure 9 in the case of a generation of pulse train Burst Mode on a channel the Gate In signal can inhibit some pulses among the pulse train Berkeley Nucleonics Corp 17 Model 745 User Manual Model 745 Digital Delay Generator November 7 OPERATING EXAMPLE Default value These values are the one stored by default e P 99 0 0 18 e Gateway 99 0 0 01 e NetMask 255 0 0 0 e Frequency1 1000Hz e Frequency2 1000Hz e TX Level 5V Width 200ns Initial setup Turn on the Model 745 with the rear panel power switch After 30 seconds the following information are displayed MOD745 Sn xxxxx 4 V1 SELF TEST Setting up the instrument Recurrent mode The aim is to set a repetitive frequency of 1000Hz to output pulse T1 with an amplitude of 4V and a width of Use keys to configure the settings as following Internal frequency 1 has been set to 1000Hz previously Button operation Display Start at menu item 1 Up 2 times and press OK Up 1 time Press OK Left 2 times Up 1 time Press OK Up 1 time Press OK Left 3 times Up 1 time Right 1 time Down 2 times Press OK Up 2 times and press OK Up 1 time Press OK Berkeley Nucleonics Corp 18 Trigger OFF T1 Ampl 5 00 V T1 Amp

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