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digiBASE

®

PMT Base with Integrated Bias Supply, Preamplifier and Digital Multichannel Analyzer

931003E / 0620

Figure 9

. digiBASE InSight Mode

The display can be switched from the digiBASE to another MCB or the buffer. In this case the
other MCB will be shown in the mode selected for it. The buffer will always be shown in PHA
mode. The display will return to the InSight mode when you return to the first digiBASE. If you
exit the program with the digiBASE in InSight mode, it will be in InSight mode on the next
startup.

The display can include a

Mark

to indicate one of the other signals shown in Fig. 10. The Mark

is a solid-color region displayed similarly to that of an ROI in the spectrum. The digiBASE

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Содержание ORTEC digiBASE

Страница 1: ...C digiBASE PMT Base with Integrated Bias Supply Preamplifier and Digital Multichannel Analyzer for NaI Spectrometry and Counting User s Manual Printed in U S A ORTEC Part No 931003 0620 Manual Revisio...

Страница 2: ...f the nature of the fault of the instrument being returned and of the model serial and revision Rev on rear panel numbers Failure to do so may cause unnecessary delays in getting the unit repaired The...

Страница 3: ...m to Establish Communication With Your MCBs 6 2 3 4 1 Configuring a New Instrument 7 2 3 4 2 Customizing ID Numbers and Descriptions 7 2 3 5 Attaching More Than One digiBASE to the Computer 8 2 3 6 Co...

Страница 4: ...Error Codes 25 4 2 1 Dollar Response Records 26 4 2 2 MCB Commands 27 APPENDIX A LIST MODE 45 A 1 List Mode Data 45 A 2 Throughput Issues 46 A 3 Sample Data Collection Application 46 A 3 1 ORTEC Conne...

Страница 5: ...nstruction is not observed In addition the following symbols may appear on the product DANGER Hazardous voltage ATTENTION Consult the manual in all cases where this symbol is marked in order to determ...

Страница 6: ...vi...

Страница 7: ...C and Visual Basic Installing the digiBASE is a snap with its USB connection Just install the accompanying CONNECTIONS Driver Update Kit and MAESTRO software connect the digiBASE to the USB port of t...

Страница 8: ...oscopy software including MAESTRO which is supplied with the instrument The digiBASE connects via a USB port 1 2 About This Manual This manual describes the digiBASE tells how to connect it in a compl...

Страница 9: ...PUT and USB connector see Chapter 3 2 2 Setting the Coarse Gain Jumper The digiBASE has 3 coarse gain settings 1 3 and 9 determined by setting a jumper within the unit The factory setting is 1 Fine ga...

Страница 10: ...the jumper is on the left most and center pins the coarse gain is 1 When the jumper is on the right most and center pins the coarse gain is 3 The gain is 9 when the jumper is removed These set tings...

Страница 11: ...ECTIONS Driver Update Kit The first step is to install the accom panying version of the CONNECTIONS Driver Update Kit This product must be installed before MAESTRO can be installed On the Instrument F...

Страница 12: ...d use of the MCB Configuration program We strongly recommend that you read the instructions for the CONNECTIONS Driver Update Kit for complete details on the command line arguments that change how the...

Страница 13: ...d not renumbering MCBs that belong to other users as this could affect the interaction between their MCBs and their ORTEC software for instance if they control their MCBs with JOB files e g the JOB fi...

Страница 14: ...ument from one USB port to another 2 3 6 Connecting to and Disconnecting from the Computer The USB connection allows you to connect digiBASE to and disconnect them from a USB port without shutting dow...

Страница 15: ...ee a detector not responding message on the status line at the bottom of the MAESTRO window When you reconnect the digiBASE to its USB port the same port to which it was attached when MCB Configuratio...

Страница 16: ...all cases the default Shaping Time 0 75 s is the preferred setting However the digiBASE supports shaping times from 0 75 s to 2 s in steps of 0 25 s 2 5 2 Amplifier 2 Figure 8 shows the Amplifier 2 ta...

Страница 17: ...king the mouse in the scrollbar will set the vertical offset to the vertical value of the channel at the marker position This lets you conveniently zoom in on a particular part of the waveform In the...

Страница 18: ...own in the mode selected for it The buffer will always be shown in PHA mode The display will return to the InSight mode when you return to the first digiBASE If you exit the program with the digiBASE...

Страница 19: ...fter the pulse maximum on the display On the lower right of the InSight display are the shaping parameter controls Except for the LLD control accessed by clicking on the other controls toggle these ar...

Страница 20: ...for storage 2 5 4 Stabilizer The digiBASE has both a gain stabilizer and a zero stabilizer their operation is discussed in more detail in the MAESTRO User s Manual The Stabilizer tab Fig 12 shows the...

Страница 21: ...itor the voltage Enter the detector high voltage in the Target field click On and monitor the voltage in the Actual field Click the Off button to turn off the high voltage 2 5 6 About This tab Fig 14...

Страница 22: ...the MAESTRO toolbar or issue Acquire Clear 2 2 5 8 Presets Figure 16 shows the Presets tab The presets can only be set on an MCB that is not acquiring data during acquisition the preset field backgrou...

Страница 23: ...me Live time refers to the amount of time that the MCB is available to accept another pulse i e is not busy and is equal to the real time minus the dead time the time the MCB is not available 2 6 Trou...

Страница 24: ...digiBASE PMT Base with Integrated Bias Supply Preamplifier and Digital Multichannel Analyzer 931003E 0620 Intentionally blank 18...

Страница 25: ...per C Gain Drift 150 ppm per C Shaping Time Bipolar shaping adjustable under computer control from 0 75 s to 2 s in steps of 0 25 s Presets Live Time up to 8 5 107 seconds in steps of 20 ms Real Time...

Страница 26: ...operties in MAESTRO Input impedance is 5 k to 3 3V protected to 10 V USB Full speed 12M bps bus powered USB 1 1 interface 3 1 2 Special Performance Features List Mode Acquisition If you need the ultim...

Страница 27: ...e digiBASE Data channels are 31 bits Most significant bit is ROI bit 3 2 Computer Controls and Indicators All controls and readouts are implemented in the MAESTRO MCA Emulation Software included with...

Страница 28: ...set e g 920 0 10 Software selectable analog offset 1 11 HV power supply 1 12 Enhanced HV SET_HV SET SHOW_HV_POL SHOW_HV_ACT 0 13 Software selectable HV range ENA_NAI DIS_NAI 0 14 Auto PZ START_PZ_AUTO...

Страница 29: ...S depends on device segment multi input MCBs only 0 46 Software selectable HV shutdown mode SET SHOW VERI_SHUT 1 47 Software selectable shaping time constants SET_SHAP 1 48 Explorable shaping time con...

Страница 30: ...PLSUM 0 78 Has programmable external dwell voltage capability 0 79 No Peak Preset feature M3 CA and OASIS 0 80 Programmable pulser OASIS 0 81 Programmable Vacuum HV interlock OASIS 0 82 Programmable C...

Страница 31: ...more spaces Specific commands require multiple parameters separated by commas that specify numeric quantities related to the operation of the MCB such as live time or conversion gain The command SET_...

Страница 32: ...ive 136 Invalid command in this mode 137 Hardware error 138 Requested data not found Micro error codes 0 Success 1 Input already started stopped 2 Preset already exceeded 4 Input not started stopped 6...

Страница 33: ...t may result As described in the two preceding sections the usual response is a macro error code of 0 and a micro error code of 0 no errors Though syntax and communication error responses may result f...

Страница 34: ...ed by start and length are cleared DISABLE_GAIN_STAB Stops stabilization of the gain peak while data is being acquired and sets the center channel to zero The gain stabilization adjustment is held at...

Страница 35: ...ENT ENABLE_GAIN STABILIZATION and DISABLE_GAIN_STABILIZATION INITIALIZE_ZERO_STABILIZATION Resets the zero peak stabilization adjustment to 0 no adjustment This value is reported as 0 by the SHOW_ZERO...

Страница 36: ...ing times in units of 10 ns Response SHAPING 75 100 125 150 175 200 LIST_TRIG_SAMPLE Lists the various trigger sources in InSight mode Response TRIG_SAMP Enable PeakDet LLD Random LIST_ZERO_ADJUST Dis...

Страница 37: ...annel as determined by the conversion gain The gain channel and width must be set before gain stabilization can be enabled The absolute minimum width for the gain peak is 3 channels See also SHOW_GAIN...

Страница 38: ...SAMPLE num Selects which controls signals are displayed as an ROI on the captured waveform Only a single bit can be turned on at a time The following signals can be selected with the associated bit Bi...

Страница 39: ...length Sets the window of interest to the specified start channel and number of channels The channels of spectral data in the window of interest are affected by commands such as CLEAR SET_DATA and WRI...

Страница 40: ...ce always 1 for the digiBASE and the current conversion gain for each segment The record is organized as follows J0102400001aaaaa00000 65 zeros here for total of 75 zeros 00000ccc where aaaaa represen...

Страница 41: ...le Response GAIN_FINE 0000000000000 8 Fine gain is set to 0 8 SHOW_GAIN_POLARITY Returns the polarity of the amplifier input as F records Responses IPOS CR Always positive in digiBASE SHOW_GAIN_STABIL...

Страница 42: ...ive Bit 1 Bias supply overload 0 overload 1 normal Bit 2 High voltage enabled 0 disabled 1 enabled Example Responses D0100000003077 CR 1000 V negative not overloaded disabled D0100000002076 CR 1000 V...

Страница 43: ...r equal to 4294967295 maximum reportable value SHOW_LENGTH_SAMPLE Reports the number of points in the InSight Mode Waveform Response C00256100 256 points in the waveform SHOW_LIVE Reports the contents...

Страница 44: ...NEXT Used in conjunction with the SHOW_ROI command SHOW_NEXT reports the next continuous group of channels that have the ROI flag set The response is of the form Dsssssnnnnnccc CR where sssss represen...

Страница 45: ...umber of counts Responses C00000087 CR Maximum count was found in channel 0 or no ROI channels were found see errors below C00001088 CR Maximum count was found in channel 1 C01023093 CR Maximum count...

Страница 46: ...ecord indicating the serial number of the digiBASE Response F100 Serial number 100 SHOW_STATUS Returns system status information in the following format Mllllllllllttttttttttaaaaahhhhhccc CR where lll...

Страница 47: ...000 days SHOW_TRIG_SAMPLE Reports the trigger source in InSight mode Responses F0ENABLE ENABLE INPUT is source F1PKD Peak detect is source F2LLD Lower level discriminator is source F3RANDOM Triggers r...

Страница 48: ...for more information about the window of interest Example Responses D0000001024079 CR Window of interest reported as starting at channel 0 and continuing for 1024 channels D0000001512080 CR Window of...

Страница 49: ...1088 CR Zero width has not been set C00003089 CR Zero width is 3 channels lowest possible width C00256100 CR Zero width is 256 channels START seg mask Starts data acquisition The optional segment mask...

Страница 50: ...digiBASE PMT Base with Integrated Bias Supply Preamplifier and Digital Multichannel Analyzer 931003E 0620 Intentionally blank 44...

Страница 51: ...com Solutions applications software aspx tab 2 A 1 List Mode Data In List mode each detectable event that would normally be histogrammed into a spectrum is sent to the computer along with a time stam...

Страница 52: ...city If however multiple digiBASEs are in use simultaneously they must all share the 12M bps Therefore no more than 9M 320K 28 units can be supported at the 10kcps average data rate This maximum also...

Страница 53: ...or data the interface software returns a buffer in which the first word is the number of bytes that were available The word is stored in the file along with the data An example file is show below 0000...

Страница 54: ...ollowing subroutines and functions Option Explicit Dim bStop As Boolean Dim uConn21 100 As Object Dim TotalCounts 100 As Double A 3 4 1 Declarations bStop is a flag that is used to track when the Stop...

Страница 55: ...ime As Date rtbStatus Text rtbStatus SelStart 0 rtbStatus SelLength 0 For i 1 To lstMCBs ListCount If lstMCBs Selected i 1 Then Set uConn21 i 1 CreateObject UMCBI CONN 2 lstUMCBI SelIndex i uConn21 i...

Страница 56: ...i 1 lData 0 4 End If Next i DoEvents If Timer oldtime 3 Then For i 1 To lstMCBs ListCount If lstMCBs Selected i 1 Then rtbStatus SelText MCB i Total Conversions TotalCounts i 1 Chr 10 End If Next oldt...

Страница 57: ...the digiBASE to transmit up to 16383 conversions The first word in the returned buffer reports the number of conversions that were actually available to be returned The REDIM command resizes the data...

Страница 58: ...e loss of data from the FIFO file is a function of the throughput capacity of USB the number of digiBASEs connected to the computer and the speed memory and operat ing system that are employed for the...

Страница 59: ...10 Mark 12 Mark types 13 Installation 5 List Mode 20 45 data 45 data collection application 46 event word 1 20 throughput issues 46 time stamp word 20 Visual Basic example 46 Live time 17 Log mode 11...

Страница 60: ...digiBASE PMT Base with Integrated Bias Supply Preamplifier and Digital Multichannel Analyzer 931003E 0620 Intentionally blank 54...

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