Home

1260 NaI InSpector User`s Manual

1. i1 p PUR plnp Polarity A pinh polarity Ooff Positive Positive Y On O Negative Q Negative X en Figure 23 The Amplifier Settings Dialog Though most of these controls can also be adjusted in the Aquisition and Analysis appli cation the Input Polarity the Preamp Type and the Inhibit Polarity can only be changed in this Dialog Box Note This window s initial focus is on the Cancel button pressing the keyboard s ENTER key after making changes in this dialog box will cancel the changes Be sure to click on the OK key to accept the changes Coarse Gain The Amplifier s Coarse gain setting is selected from the drop down list Fine Gain The Fine gain control which is set by a Scroll Bar provides a gain multiplier from 1 to 4 S fine Gain The S fine Gain control can be used to establish a specific gain energy per channel Shaping Mode This control sets the amplifier s shaping time constant to Slow approximately 4 us shaping or Fast approximately 1 us shaping For the Nal InSpector the shapings are 1 us Slow and 0 5 us Fast PUR This control turns the amplifier s Pileup Rejector PUR On or Off When PUR is on a Live Time correction is performed for pulses that are piled up Defining an MCA Inp Polarity The Inp Polarity control matches the polarity of the amplifier s Input to the polarity of the preamplifier s Output This contro
2. ei beg RR RR REESE 39 Indicator 2s curre RE RR ys 10 Adapter pwer len 12 ADC Conversion gain 2 2 ee ee eee eee 14 32 EIS erbe A CRUEL 14 32 Purpose of ce sce cs RR Re RR 14 SEINES rior qb 32 Ul merida banderita 14 33 PTO faye dot Bok ts Bs deo TEE ok Bal eae and 14 33 Adding AT MCA ub sRDRCPEES ERA cp 25 Amplifier Coarse PAM errar 36 Fine UM 36 Gain function of o o oooooooo o 13 Inhibit polarity llsss eese 37 Input polarity control 0 37 Input polarity function of 13 POIE ZETO ico e 13 Preamp type control ooooo coooo oo 37 PUR control visi e 36 PUR function of o o oooooo oo o 13 Purpose Of ois oc bbs RXUCPRORNUAES cae ES 13 setting the esenciales 35 Shaping x dem ER SEY ESAs E REY Eds 13 Shaping control o oco oooooooooooo 36 S per fine g lli ii da px 36 Applyingpower lees 8 Asterisk In the title bar scams Rer RR eeu 41 Attaching the batteries 3 Automatic HVPS turn 0D ze eer a 15 Basic system components 2 Batteries status screenentry 48 Battery Attaclung d ebbe RAM redada 3 A ek bree4pr DEG Gd x RE DEP 12 Charging dra 3 Charging u s ie exe dae eb ERR 12 Discharging ete eR Re RV 12 Expected charge life 18 Installing Acordar RR RR 3 LocatiODS sonis yir RETOUR ER ERU A 8 LOW SENSO ss sess gb cig i
3. oooo oo o 15 Zero centrold erer doses eh CHR 15 34 Standby Delay ccr vehe e er s 39 PUNCHOMOR sec ace tease e ea ed eris 18 State of the batteries 8 Status HVPS conttol esee RS 15 INdICAOLS cra uo cR pt vec es 8 Status screen Entries explained 0 48 Summary of MID definitions 43 Super fine gain amplifier 36 System Connections es ir Seedy Ed vs 5 GroundING 2 2 ehem nee ue 7 Titlebar asteriskin 41 Turning on the Nal InSpector 8 ULD control ADC 14 WED control ADC re ecri urea eS a 33 Unloading a database definition 47 Using An input definition 00 45 An MCA definition 00 24 Virtual data manager See VDM Voltage control Furnctionof ari ta 14 High Voltage A escee ech eee ees 38 Voltage limit Function of cisco eee 14 High voltage control o oooo ooooo 38 Window Gain Zero function of oooo o oo 15 Z Zero ADGCOnttol berere TENEN E Gu 33 ADC function of 0 0 0 nnana ce eee eee 14 Control Controls ous beoe ice ae RESI AS 34 Centroid function of o ooooo oo 15 Mode cortrol Jr RR RR Y 35 Rate divisor control 35 Rate divisor function Of 16 Spacing control sellheeel Rv RR Rt 35 Spacing function of 0005 15 Window control ooo oooooooo o 34
4. 12 Reporting An input definition 0 45 Reset pulse width setting 10 Resetting The HVPS Nal InSpector 15 Runtime database Definition Of serio ds 45 Deleting an MCA from sus 28 Loading a definition t0 o o ooo o o 46 Unloading a definition from 47 Runtime configuration database 45 Runtime database Adding an MCA to 2 0 ee eee eee 25 Save and save as difference 42 Selecting A baud tate cocos esce e s 30 Th comport erratas lara 30 Senalportpower l l sss 5 10 Setting High Voltage coser 37 The ADC decere ERR 32 The amplifier ence 35 The MGX nec herb dh e Rech 32 The Stabilizer o oooooo o 33 Setup DEVICE eur e ER RRRE Nee RES 29 Shaping Control amplifier sels eese 36 F ncfomoft 25e ea wr ERR RR 13 Spacing Gain Zero function of o o oo 15 Stabilizer Correction range cesse e ERR pe 35 Gain centroid o ooooo o 15 34 Mode controls 1 cce ds mss 35 Mode function Of o ooooooooo o 16 CQVETTAN A e e eter Eri 35 A tpe 15 Rate divisors 0 0 eee ee o 16 35 SeltingS oic ess eene d ee deeds 33 Spacing controls 35 Spacing function O ooo oooooooooo 15 Status screen entry s coore cerro inini 48 Window controls 0 02 eee ee eee 34 Window function of
5. Using the MCA Definition Files To use an MCA Definition you must first have saved the definition to disk as a file Once you ve done that all you have to do is load that file into InSpector s internal MCA Runtime Configuration Database From that point on all MCA operations will use the configuration information that was stored in the Definition File To change to a new con figuration all you have to do is replace the database s contents with a new file Starting the MCA Input Definition MID Editor Start the MCA Input Definition Editor MID by double clicking on its icon in the Ge nie 2000 folder The result will be the application window shown in Figure 11 Size ADC MXR Stab Amp HV Figure 11 The Mid Editor 24 Building an MCA Definition Note that the phrase local Untitled in the title bar means that the MID Editor is con nected to the local VDM and that no file is currently open this is the default condition in a non networked environment Building an MCA Definition Building an MCA Definition means Selecting the MCA and front end hardware to be used for each input through the Device Menu Defining the operating characteristics and modes for each MCA and its front end hardware through the Settings Menu In this section we ll explain how to add and delete the MID editor s MCA entries and will explain what the definition entry consists of and the next section tells how to define the I
6. Click on the one you want to unload then click on the Unload from button Note that this menu item is disabled if the MCA Runtime Configuration Database is currently be ing used by another application 47 A Technical Information Status Screen Entries Though the majority of the entries in the Status Report are direct reflections of the MCA Input Definition Editor settings or the Acquisition and Analysis applicationn s Adjust set tings a few of them are explained in greater detail here Stabilizer The Zero and Gain correction values are the numbers representing the amount of correc tion made to the ADC The range of correction is O to 4095 with 2048 representing no correction If data drift causes either the Gain or the Zero correction to reach the limit of 0 or 4095 that stabilizer function will be changed to Hold and an overrange error flag will be set To clear the flag set that function to off to clear the overrange flag and set the value to 2048 then correct the cause of the excessive drift before returning the mode to on Power Manager Battery A and B Status Bat A or B Status is reported as Good when the battery voltage is gt 5 8 V Low when the battery voltage is 5 8 V Discharged when the battery voltage is 5 5 V When the Power Manager detects a Discharged battery it will no longer use that battery port until the battery is removed voltage detected as lt 0 5 V and replaced with a battery
7. Window function of o ooooooo o 15 63 l A CANBERRA Warranty Canberra s product warranty covers hardware and software shipped to customers within the United States For hardware and software shipped outside the United States a similar warranty is provided by Canberra s local representative DOMESTIC WARRANTY Canberra we us our warrants to the customer you your that equipment manufactured by us shall be free from defects in materials and workmanship under normal use for a period of one 1 year from the date of shipment We warrant proper operation of our software only when used with software and hardware supplied by us and warrant that our software media shall be free from defects for a period of 90 days from the date of shipment If defects are discovered within 90 days of receipt of an order we will pay for shipping costs incurred in connection with the return of the equipment If defects are discovered after the first 90 days all shipping insurance and other costs shall be borne by you LIMITATIONS EXCEPT AS SET FORTH HEREIN NO OTHER WARRANTIES WHETHER STATUTORY WRITTEN ORAL EXPRESSED IMPLIED INCLUDING WITHOUT LIMITATION THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR OTHERWISE SHALL APPLY IN NO EVENT SHALL CANBERRA HAVE ANY LIABILITY FOR ANY SPECIAL INDIRECT OR CONSEQUENTIAL LOSSES OR DAMAGES OF ANY NATURE WHATSOEVER WHETHER AS A RESULT OF BREACH OF CONTRACT TORT LIABILITY
8. 5 ses Xem aap Ge ee as UL Re 9 a A a ay a 37 Power Managements sas xus age E XS eoe FUR we ee es DP GT ek a eee 38 lC T A a E e i 40 Saving the Input Definition swe e eae aa aa d a a a aa a a E a 41 Save and Save AS 4 0 era x Re a n nc bom mom a noe Ds Eom Re Ue e ee d dE 42 Using Save ASe os qoos do Ron nnde deo o ROS x e ee Bae AUR NUS Roe d 42 Changing the Summary VieWw e a e i e a e a p a eoa e a oai i a 42 Editing an MCA Definition so ese coec ago etcem ee 43 Opening an Input Definition Files sos 2 0 2000002 43 Viewing the File Details ee nr 44 Editing the Definition 25 sw boe a a DOR See eww aa 44 Th New Commando s scce ion e omm x Rok A a X 45 The Input Definition Report 2 lle 45 Using MCA Definition Tables lt s se saca e 45 Viewing the Current Database eA 45 Loading and Unloading Definitions eA 46 Loading the Database ea s osa saadaa aea a ee 46 Unloading the Database e sos easa rA 47 A Technical Information 48 Status Screen Entries eee es 48 Stabilizer 2 e da ess ee ae ass EL 48 Power Manager s sow osos eoe eom ae A e ee E em Be RR dis 48 Rear Panel Connectors a mece mi aaa a Rom Xo de te HR De ode ed ee OR da 49 B Specifications x9 wee Rom m m RUE RU as D2 Input Output 3 ido ren odere a a n rus t Pieds a grid Et Roe gr da 52 Controls 225 eee ow hea be ee b n ok RR RR v E
9. Setting the ose ee bedekseis e 37 SAWS Sous cue E PROPERE bans ERES 15 Voltage control o ooo oo ooooomooo o 38 Voltage MIE isc ir 38 Voltage Control casona 14 Voltage Tiit oeei eee ELI ee Rb 14 HV connector pIn0Ut 49 Indicators Acquisition 02 0 eee ee eee ee eee 10 Battery Status cceli eigo eid 8 High voltage ose 10 Inhibit polarity Control eoo see ree mr 37 Input COMA cc 40 Name Changing 203s sins ras ie 40 Out of SETVICE cocos ea 41 Saving a definition 04 41 cp m 40 Input definition Prn ng oed debe v Ee RE 45 Input definition Loading multiple 0000 47 OPCMINS ON ses eek de pla ER RR adie 43 Report i504 ose e eMe RE 45 Using ig ecce nep enero ate feats eR dea 45 Input polarity Control des etre eds erg 37 Function of osos essere eme eee es 13 Input size setting the 40 InSpector AIDC settings o sae ee etd dd dia 32 Amplifiersettings lees eese 35 Amplifier setup ecco ee ek dns 30 Baud rate Settidg ooo ooooocoocooomoo 30 Com port setting reiese iraro rinii nii 30 High Voltage SettidgS oooooooooo 37 Inp t settings ula RR es 40 MCA setings Vitamin REV EIER bins 32 MCA Setup er EDU ERRARE E do ate 29 Stabilizer settings llle esses 33 Installation Battery cerid e p RM theres US 3 Laptop sleep mode 5 10 LEDs On the front panel rasos 8 Life of a ba
10. a thinner cable Connect this to the Nal InSpector s HV connector The other end of the Composite Cable has several connectors Onerectangular connector e Several barrel shaped connectors Power Connector Connect the cable s rectangular connector to the preamp s 9 pin power connector Energy Connector Connect the cable s Red energy connector to one of two instruments Anexternal preamp s energy output connector Its signal must be either a voltage tail pulse usually derived from an R C preamplifier or a step input usually derived from a TRP preamplifier Properly matching the amplifier parameters to this input shape is essential to achieving optimum system performance Refer to Preamp Type on page 37 for instructions on selecting the system s preamplifier type Anexternal amplifier In this case you must select an external amplifier for the system refer to Amplifier on page 30 for instructions on selecting an extermal amplifier This bypasses the Nal InSpector s internal amp and presents the signal which must be a positive unipolar or bipolar pulse with a O to 10 V amplitude directly to the internal ADC The High Voltage Connector Connect the cable s SHV connector to the preamp s High Voltage Input connector Grounding the System It s not necessary to ground the Nal InSpector system in most applications However in extreme environmental conditions the Nal InSpector might be susceptible to oscillati
11. actual output to a voltage between zero and the Voltage Limit Hardware Operation Status If the Power Manager described on page 17 is in the Battery Full mode or the AC Full mode you can turn the HVPS On or Off In the Battery Save mode you can set the HVPS to Armed or Off If Armed is selected the HVPS will be automatically turned on when acquisition starts Reset When a fault caused by an overload or an Inhibit occurs the HVPS will be turned off Af ter the fault condition has been cleared click on Reset to reset the HVPS then turn it on again with the Status control The Stabilizer The Nal InSpector s programmable digital stabilizer provides both zero and gain stabili zation in applications involving long count times or high count rates It accomplishes this by using reference peaks in the spectrum and correcting the ADC s conversion gain or its zero intercept or both to keep these peaks from drifting The stabilizer can be turned On or Off or set to Hold in the MID Editor or the Acquisition and Analysis application Putting the Stabilizer on Hold lets the software remember the Stabilizer s adjustments for successive counts provided the operating conditions are sim ilar The Stabilizer s programmable controls are Gain and Zero Centroids Gain and Zero Window width Gain and Zero window Spacing Gain and Zero Mode Gain and Zero Rate Divisors and Correction Range for the gain Figure 6 shows the relationship betwe
12. changes in this dialog box will cancel the changes Be sure to click on the OK button to accept the changes 37 MCA Input Definition Range The Range control not available on the Nal InSpector which must be set before the Voltage Limit or Voltage Control is adjusted sets HV Power Supply s absolute voltage limit to positive 1300 volts for a sodium iodide or cadmium telluride detector or positive or negative 5000 volts for a detector requiring no more than 100 uA of bias current such as a germanium detector This automatically changes the upper value for the Voltage Limit and Voltage controls This control can be set only in this Dialog Box it cannot be changed in the Aquisition and Analysis application Voltage Limit The Volt limit control establishes the HVPS s maximum output voltage within the se lected range It must be set before the Voltage control is adjusted This control can be set only in this Dialog Box it cannot be changed in the Aquisition and Analysis application Voltage After setting the Voltage Limit the Voltage scroll bar sets the output of the HVPS be tween the Voltage Limit s minimum and maximum settings The voltage can also be typed in from the keyboard then accepted with the Ok button within the control The Aquisition and Analysis application allows you to adjust the output voltage as well as turn the HVPS on and off and reset it Power Management The Power Management Dialog Box not available on the Deskt
13. computer at a time You must get our written permission for any exception to this limited license BACKUP COPIES Our software is protected by United States Copyright Law and by International Copyright Treaties You have our express permission to make one archival copy of the software for backup protection You may not copy our Software or any part of it for any other purpose Revised 1 00
14. is consumed in the off position In the on position the batteries are load tested and continually monitored with status shown by the Battery Indicator LEDs Indicators BATTERY STATUS A B LEDs indicate which battery is in use when a battery is low and when a battery is discharged disconnected Switch over is automatic 52 Power Subsystem HV ON LED to indicate the presence of HV at the rear panel SHV connector ACQUISITION LED to indicate acquisition in process Power Subsystem BATTERY PACK Dual 6 V NiMH battery packs standard Duracell DR11 batteries BATTERY LIFE Approximately four hours of live acquisition time for two batteries with an Nal detector and a 2007P tube base At a typical operating duty cycle of 50 ap proximately a full days operation can be expected POWER RESERVE Battery cartridges may be changed one at a time without inter rupting the instrument operation FAST CHARGER Separate charger for standalone batteries charge time approxi mately two and one half hours AC ADAPTER 110 220 V ac external supply connected to the unit in place of battery A Battery B can be used to supply power to the instrument if ac is lost BATTERY BACKUP Internal lithium battery to back up MCA memory POWER MANAGEMENT An intelligent power management circuit optimizes battery life and avoids a deep discharge condition by automatic and manual power shedding techniques Individual power modes are AC Powe
15. key to move to the File Descriptor input box The File Descriptor The text cursor is now located in the input field called File Descriptor This a 32 character description that is stored with your file to make it easier to locate it when you want to use it again Changing the Summary View Before going on to see how to edit an existing Input Definition Table one that you ve built previously and saved to disk there s one more menu to look at This is the Summary menu which is shown in Figure 28 Summary Figure 28 The Summary Menu 42 Editing an MCA Definition The Summary menu has two commands By MCA and By Input which change the or der in which the information in the Input Definition Table is displayed By MCA means that the first column of the table will display the MCA type that is being used for each en try If you choose By Input the MCA and Input columns will be reversed in the display and the Inputs will be sorted alphabetically You can choose either method but in the case of systems with a large number of inputs By Input is an easier display to understand than By MCA Editing an MCA Definition The procedures that we used in the previous sections can also be used to edit MCA Input Definitions that have already been saved to disk Opening an Input Definition File To edit a file that has not been loaded into the MCA Runtime Configuration Database all you have to do is read it into the Input Definitio
16. made in the MID Editor when first defining an Input this procedure is fully explained in The Settings on page 31 In addition most of these settings can be changed while acquiring data as explained under Adjust in the Gamma Acquisition and Analysis chapter in the Genie 2000 Operations Manual or the 509 Alpha Acquisition and Analysis Manual 13 Hardware Operation The Nal InSpector s internal amplifier receives the output pulses of the external preamplifier shapes them and amplifies them so that they are more suitable for analysis The output of the amplifier is passed to the internal Analog to Digital Converter ADC The amplifier s programmable controls are Coarse Gain Fine Gain Super fine Gain Shaping PUR Input Polarity automatic and manual Pole Zero Inhibit Polarity Gain The amplifier s gain the amount of amplification that the input signal is given before it is sent to the ADC is set by the coarse gain fine gain and super fine gain controls The fine gain and super fine gain controls multiply the coarse gain setting to yield the final gain setting of the amplifier The super fine gain control can be used to establish a specific gain energy per channel Shaping For the ADC to be able to process the input signal the amplifier must do more than am plify it it must also change the shape of the signal The Nal InSpector offers two shaping modes Fast approximately 0 5 us shaping time constant and Slow approximat
17. only in the Power Save mode available in the MID Editor or the Acquisition and Analysis application which sets the amount of time the system can remain idle neither acquiring data nor communi cating with the host computer before it automatically changes to Standby In Standby all electronics except the Power Manager are shut down until the next command is received from the host When the command is received the Nal InSpector automatically returns to the Power Save mode Battery Selection When the Nal InSpector s power switch is first turned on the Power Manager uses the battery with the lowest voltage charge first or battery B if both are equal unless the Power Manager is set for the AC Full mode as described above The Power Manager continues to use the battery with the lowest voltage until it becomes discharged then switches to the other battery to maximize operating and charging time Removal of a bat tery is immediately detected and if the removed battery was the active one the Power Manager switches to the other battery so rapidly that data acquisition in process is not in terrupted When a battery is installed the Power Manager will compare it to the other battery to de cide which is the one with the lower voltage and will select that one as the power source The test for lowest voltage is also made when either the Battery Full mode or the Battery Save mode is first selected Battery Charge Life How long a pair of fu
18. the file to be loaded into the database Load Definition to Database File Hame Directory is CAGENIEPCAMIDFILES Files Cancel Figure 32 The Load To Dialog 46 Using MCA Definition Tables Loading Multiple Definitions Though you will usually use only one definition at a time there may be times when you want to load more than one definition To do this be sure that each of the Input names in the Definition Files is unique As long as both of these conditions are true you can load as many Input Definitions as you like If you try to load an Input Definition which contains a duplicate Input name the system will display a message telling you that the requested Load can t be done Unloading the Database Though some of the programmable front end controls such as ADC Gain or Amplifier Gain are initially set with the MCA Input Definition Editor many may also be adjusted in the Acquisition and Analysis application while you re collecting data These adjust ments can be stored in the database with File Save and when you Unload the database are saved in an Input Definition File for future sessions The Unload Process To unload a Database click on the Database menu s Unload from command which will bring up the Dialog Box shown in Figure 33 If several choices are listed there are multi ple definitions in the database Unload Definition from Database File Name Figure 33 The Unload From Dialog
19. the system reso lution or conversion gain that is the number of discrete voltage levels or channels into which the input pulses will be sorted For instance a conversion gain of 2048 sort ing the inputs into 2048 discrete levels has twice the resolution of a conversion gain of 1024 LLD ULD The Nal InSpector s MCA contains a circuit which examines each input to see if is greater in amplitude than the LLD setting and lesser in amplitude than the ULD setting Inputs which are within this energy window are converted by the Nal InSpector s ADC Inputs not inside this window are discarded Zero In most cases channel one of the spectrum is made to correspond to a zero energy input zero intercept This means that the location of a given pulse in the spectrum is linearly proportional to the height of the pulse s input signal In some cases however the Zero control can be used to offset the spectrum by up to 5 of the ADC s current conversion gain The ADC s zero is factory set for each conversion gain so that a 0 setting of this control corresponds to the zero intercept at channel 3 The HVPS The High Voltage Power Supply s HVPS programmable controls are Voltage Limit and Voltage which set the bias voltage for the detector and Status and Reset Voltage Limit For operating safety the Voltage Limit establishes the HVPS s maximum output voltage within the selected range Voltage The Voltage control sets the HVPS s
20. to this port it will supply power to the InSpector The AC Adapter s User s Manual tells you how to connect it to the battery port with the supplied connecting cable If ac power is lost the Power Manager will automatically switch to port B allowing its battery to continue supplying power When ac power is restored the Power Manager will switch back to port A Acq Delay The Acq Delay control not available on the Nal InSpector which is enabled only in the Battery Save mode sets a delay time which holds off actual data acquisition until the high voltage has reached its preset value and the internal electronics are thermally stable A minimum delay of one minute is provided to allow the high voltage to increase to its preset value and the internal electronics to warm up The internal electronics will stabilize to within 0 1 of their final settings in less than five minutes Standby Delay The Standby delay control enabled only in the Battery Save mode sets the amount of time that the system can remain idle neither acquiring data nor communicating with the host computer before it automatically changes to Standby In Standby all electronics ex cept the Power Manager are shut down until the next command is received from the host A setting of 0 minutes will prevent the InSpector from switching to Standby 39 MCA Input Definition Input The Input command is used to change the name of the Input and set up the structure of its memory
21. via the Dialog Box shown in Figure 26 These commands are not available in the Aquisition and Analysis application Note This window s initial focus is on the Cancel button pressing the keyboard s ENTER key after making changes in this dialog box will cancel the changes Be sure to click on the OK key to accept the changes Define Input Input name DETO1 Input Size channels Detector Type 16384 Out of Service O Memory groups 1 Figure 26 The Define Input Dialog Input Name The default DETnn name is the name displayed here allowing you to easily change it to a more meaningful name such as H20OSampl up to a total of eight characters Detector Type Use this drop down list to select the type of detector to be used with this MCA this also assigns appropriate default values to the spectrum display and analysis parameters Input Size This parameter defaults to 8K the number of channels assigned during Device setup for the MCA on the assumption that you ll be using Full Memory for your data acquisi tion To use less than the maximum available memory size use this control to select the size you want to use For instance for Nal spectra you wouldn t want to use more than 1024 channels 40 Saving the Input Definition Out of Service This Check Box allows you to place this Input temporarily out of service That is it will remain as an entry in your MCA Definition File but will not be available
22. will be set and that mode will be changed to hold Set that mode to off to clear the overrange flag then correct the cause of the excessive drift before returning the mode to on Gain and Zero Rate Div The Rate Divisor controls adjust the count rate dividers at the input to the correction reg isters for each Mode For high count rate reference peaks increasing the Divider value will smooth out the correction applied to the system and minimize any peak broadening Hardware Operation The Power Manager The Nal InSpector s intelligent power subsystem design incorporates a dedicated micro processor which optimizes the instrument s power consumption while continuously mon itoring the state of the batteries Power for the instrument is always derived from one battery which is indicated by a blinking Battery Indicator A battery with a voltage above 5 8 volts is considered charged and its indicator is green At 5 8 volts the battery s charge is low and its indicator changes to blinking red At 5 5 volts the battery is discharged and will no longer be used it must be replaced When in a steady red state the battery may be removed and replaced without disrupting operation of the other battery Continuous operation of the instrument will be assured if the reserve battery is fully charged indicated by a steady green indicator At switchover the now depleted battery s indicator will glow constant red or turn off Uninterrupted operation ca
23. with a voltage 5 5 V The Power Manager specifically looks for the battery to be removed because an unloaded battery will recover some of its voltage but will not have enough capacity to support a load for more than a few seconds Batteries The line labeled Batteries shows the status of the InSpector s batteries 48 Rear Panel Connectors If this line reads Warning you have only a few minutes of power left before the In Spector shuts down Good means that at least one battery s voltage is gt 5 8 V Warning means that the voltage of both batteries or just one if only one is connected is 5 8 V RAM Batt Back The RAM Batt Back line shows the condition of the internal lithium battery used for maintaining data in the spectrum memory when the InSpector s power switch is turned off This battery with an operating life of at least five years is in a socket on the InSpec tor s MCA Board When its status changes from Good to Disc discharged replace it with a Panasonic CR2025 battery or equivalent 12 V Fault The 12 V Fault status tells you that because there is an an overload on the 12 V or 12 V power supply the Power Manager has put the supply into a Power Save condition The most likely cause of this is that the preamplifier connected to the rear panel Preamp con nector requires more power than the InSpector can supply The proper remedial action is to disconnect the preampli
24. with the supplied battery charger Refer to the battery charger s manual for com plete instructions on charging batteries Attaching the Batteries Referring to Figure 1 attach the fully charged batteries to the Nal InSpector s battery ports 1 Looking at the back of the Nal InSpector hold one of the batteries so that its curved surface is facing you and the brand name is to your left 2 As shown in Figure 1 place the battery on the battery port so that its mounting slots are slightly above the port s mounting tabs then press in and down to engage the battery 3 Besure that the top of the battery has been pushed in past the retaining thumb clip at the top of the battery port so that it will be held tightly against the port s electrical contacts Setup and Configuration g tab c c 3 o Pin recepticles Figure 1 Attaching the Batteries Connecting the System Connecting the System This section provides step by step instructions for connecting the system cables to the Nal InSpector s three rear panel connectors Figure 2 COMPUTER sf o Pid o o PREAMP Figure 2 The Rear Panel Connectors The Computer Cable The 600 cm Model C1715 2 Computer Cable the one with a 9 pin connector on each end carries computer commands and spectral data between the computer and the Nal In Spector Connect the cable between the Nal InSpector s rear panel COMPUTER connector and your computer s communications
25. 9 MCA Input Definition MCA for input DETO1 ik Sk dk 8k Hilik Sak Ddk o Full Memory r No of ADCs ed Ls COM Port Baud Rate COMI x 19200 Figure 17 The MCA Device Setup Dialog Com Port and Baud Rate This dialog lets you select the host computer s communications port and set its data trans mission baud rate The com port setting must be the same as the one you have con nected the InSpector to on your computer When a datasource is opened the InSpector s baud rate data bits stop bit and parity are automatically set to match the host computer s data transmission parameters Although the baud rate can be set as high as 115 200 your computer may not be able to sustain this rate without communication errors Many laptop computers are known to op erate at 57 6 kbaud If yours does not the default 19 200 baud rate allows reliable opera tion with most computers At lower baud rates the SAD TIMEOUT parameter in your CONFIG SYS file should be increased to prevent VDM Timeout errors To calculate the proper SAD TIMEOUT value multiply the spectrum size in channels by 484 and divide the result by the pro posed baud rate For example a 4K channel spectrum at 1200 baud would use a SAD TIMEOUT value of 4096 x 484 1200 1652 Amplifier Under the Amplifier command shown in Figure 18 you use the Device Driver drop down list to select either the programmable InSp
26. COM port connector Note Since most laptop computers have power management features which shut off power to non essential circuits be sure that the power to your laptop computer s serial port is on before trying to communicate with the Nal InSpector More than One Nal InSpector in the System If you have more than one Nal InSpector each one will have to be connected to a differ ent com port such as COMI and COM2 Each Nal InSpector must be set for the com port that you are connecting it to This is done in the MID Editor refer to Com Port and Baud Rates on page 30 for more information Setup and Configuration The Composite Cable The C1712 Composite Cable shown in Figure 3 is designed for the typical PMT tube base used with most Nal detectors It carries high voltage and preamplifier power from the Nal InSpector to the detector system and control and energy signals from the detector system to the Nal InSpector To Detector To InSpector Figure 3 A Typical Composite Cable Although this is a specially shielded cable Canberra recommends that it be routed away from interfering signals If there is a nearby computer display with a CRT tube do not run the cables in front of it Connecting the System Connecting the Composite Cable One end of the Composite Cable has two connectors A large rectangular connector on a thick cable Connect this to the Nal InSpector s PREAMP connector A barrel shaped SHV connector on
27. INCLUDING NEGLIGENCE STRICT LIABILITY OR OTHERWISE EXCLUSIONS Our warranty does not cover damage to equipment which has been altered or modified without our written permission or damage which has been caused by abuse misuse accident or unusual physical or electrical stress as determined by our Service Personnel We are under no obligation to provide warranty service if adjustment or repair is required because of damage caused by other than ordinary use or if the equipment is serviced or repaired or if an attempt is made to service or repair the equipment by other than our personnel without our prior approval Our warranty does not cover detector damage due to neutrons or heavy charged particles Failure of beryllium carbon composite or polymer windows or of windowless detectors caused by physical or chemical damage from the environment is not covered by warranty We are not responsible for damage sustained in transit You should examine shipments upon receipt for evidence of damage causedin transit If damage is found notify us and the carrier immediately Keep all packages materials and documents including the freight bill invoice and packing list Software License When purchasing our software you have purchased a license to use the software not the software itself Because title to the software remains with us you may not sell distribute or otherwise transfer the software This license allows you to use the software on only one
28. Model 1260 Nal Inspector User s Manual 9230949C 6 99 ISO 9001 SYSTEM CERTIFIED Copyright 1999 Packard BioScience Company All rights reserved The material in this manual including all information pictures graphics and text is the property of Packard BioScience Company and is protected by U S copyright laws and international copyright conventions No material in this manual may be reproduced published translated distributed or displayed by any means without written permission from Canberra Industries a division of Packard BioScience Company Canberra Industries 800 Research Parkway Meriden CT 06450 Tel 203 238 2351 FAX 203 235 1347 http www canberra com The information in this manual describes the product as accurately as possible but is subject to change without notice Printed in the United States of America Table of Contents 1 Introduction 1 2 Setup and Configuration 2 Unpacking the Nal InSpector ee 2 Connecting the System 4 29 ok LR m o P Roe o eR Le REED RUE e Re 5 The Computer Cables s s x ee m Romeo EUR ROS Rye be a ee RC 5 The Composite Cable eo e vos oon mno ROB REX peor RE RU RUP RO E OE ees 6 Grounding the System 4 2 ge e ch ek eee ad tr TRE es 7 3 Hardware Operation caos Se Dom mo eee ok c RR om 8 PowersSWitCchlis s dag eX mesmo mE WE ue X AO E A A ON usd 8 The Status Indicators 4 5 bobo Ro ra whe CR eR URGE
29. O AAA 52 nico RC T DTI 52 Power SubSyst H e s e coa e Boxed a E ROW E EUN X PRX ede ee Xe 4g 53 Perform nCe 44 2 bL Ree ERE EEE EEE OE PRES NOR E E REG REGGE HES Reg 54 FIVE LITT 54 Amplfiet avec sec be ee Pe dee SOR X RU Ede p GUN PY b y Pee xong ds 55 Lio 55 Digital Stabilizer 44e xou ox fx oA RE Rx AL as m X x te ai e NR RU Rod 56 Pile p RejJector a x 2 eso cia os RR eI es we ER de o deo de dis ele un ese 56 Teodoro ATI 57 Physical se or eke oso m ow m HERE OR RA 57 Ordering Intormation s ss 2s a OUR oed Goo e Toe RE odere Ae Aa 57 OD OHS noz aha dada ad x Ek EGER ADR dp s Xs um Bap ode ADT Xe he 58 Minimum Computer Requirements 2 tencr taa tatea 58 Index 223454 ww eS wR chem de xoa Kee xs BY 1 Introduction This manual includes information on unpacking and setting up your Nal InSpector Chapter 2 serves as a guide to unpacking and connecting your new Nal InSpector Chapter 3 introduces the Nal InSpector s programmable electronics and describes the use of each function Chapter 4 covers the MID Wizard and the MID Editor which help you quickly set up your system Appendix A discusses the status screen entries for the Stabilizer and the Power Manager and describes the rear panel connectors Appendix B is a full listing of the Nal InSpector s specifications When you ve completed your setup you ll find complete operating instructions in the Genie 2000 manual set 2 Setup and Config
30. RO Y EUR Reg 8 The CONNECTORS 20 a RES EUR queste dg I gt OU Ae ee ge ye 10 The Power Systems araa ga ea 9x woe RR E mk S AUR RP A EROR OE ROSE eek ee ens a 12 Programmable Electronics 4 2 udo rta m ma Roy v Lo eoo Ree RECON Sess 12 jns c Tr TTE 14 TheHVPS 2 bebe eRe rar rra Re ox REM REED ERE Reg 14 The Stabilizers 32m 4 5 oe A A E use he col eer s 15 The Power Manager assess ad bee X A ko ox a Meee ee Bd Rs 17 Tuning the Display Environment les 19 4 MCA Input Definition ee 21 The MID Wizatd x sou a ea oe YB S a A x AR dv RR e de e 21 The MCA Input Definition Editor e ace s taw exa agaa eh e a a i e e a a e a a 23 Basic Concepts sse aa rd Roscoe s Deum od om ae ee Boe ee 24 Starting the MCA Input Definition MID Editor lee 24 Building an MCA Definition les 25 Addins an WIC EA ae phar Ae Whore ii a a 25 Interpreting the Definition Entry gt s a lees 27 Deletmge an MCA 5 d ace Lo eon seen bubo ee qoe ch e aa Ede Ree 28 DetnisamMCA 22R 4 ccn xe RR A he Ke QE ERE E Ge A SU e 28 Device Setup sw koe ER RR RUE m E BOR OE ER RR wow Re BOR XO EO 29 MGA CLIE ET 29 Amplie es g ed aee 4 84 hd BER ewe a a Com Pew ado E RP Rode 30 Th Settngs tc aux Dogs oe ox alus Anu ae Oe ve Rog th role d RO RR d ant 3l MCA PLC 32 ADG sone ra a PEER EERE FP P REESE HES EH 32 A MD IT 33 Ampliter 24 44 4284 6204 eens sad vp ead hes Se RO ROS Go dcus 35 High Voltage 4
31. Supply associated with the MCA Deleting an MCA If you change your mind and want to remove an MCA that you have added to the defini tion you can do it easily by 1 Clicking on the table entry you want to delete to select it 2 Clicking on the Delete MCA command in the Edit menu When you do that the Dialog Box shown in Figure 15 will pop up Click on OK to remove the entry Delete MCA A Delete the AE MCA and its inputs size ADC MXR Stab Amp HV L 8192 1P IP 1P 1P Figure 15 The Delete MCA Dialog Defining an MCA This section discusses setting up an InSpector MCA which has a fully programmable front end That is its Amplifier ADC Digital Stabilizer Power Manager and High Volt age Power Supply are all controlled from the PC rather than manually with front panel knobs and switches 28 Defining an MCA To begin click on the MCA entry in the Definition Table that you want to set up Device Setup The Devices menu shown in Figure 16 sets the parameters for the InSpector s MCA and Amplifier Those Devices which are disabled grayed do not have any settable parame ters Devices Amplifier Figure 16 The Device Setup Menu MCA The MCA command in the Devices menu pops up the Dialog Box shown in Figure 17 Full Memory and Number of ADCs You can select the Number of ADCs and the MCA Full Memory size here Note that not all models of the InSpector allow these parameters to be changed 2
32. al InSpector Connecting multiple o o o o o 5 Turmng 0D rese ee Ede PE 8 Opening An input definition file 43 Outofservice llle 41 Ovemange clearing 35 Pinouts connector 49 Pole zero FUNCOM Of osasi ra rino id ibi 13 Power PNCAPUCT uates nenia dee acs iaa iai 12 Cable preamp connecting 7 SA MEME 8 System the sioe esee e 9 12 USIN Apera esed deti e a Eb Ete 12 Power manager Acquisition delay ooo oooooooooo 39 Standby delaY oooooocooocoooooooo 18 Power management See Power manager Power manager Modes 004 sai dob Pied VR ES 17 39 PULPOSCOL oa eee yid eene tr ERE RA 17 Power Manager Standby delay s gees wales ERES VER 39 Status screen entry ooocococoo rimsi 48 Power mode control 39 Preamp Selecting the type ni eccriene dee 37 Preamp connector pin0Ut 50 Preamplifer cable connecting 6 Printing An input definition 00 45 Pulse pileup rejector See PUR PUR Amplifier control coi eer ees 36 61 R S 62 Function of reei pl RR REST ET EE 13 RAM batt back status screen entry 49 Range High voltage control lesus 38 Rate divisors Function of 0 0 0 0 eee eee eee 16 Stabilizer controls 20 0000005 35 Rear panel connector pinouts 49 Refreshing a battery
33. ared by all of the programs which make up the InSpector software package and is used by those programs to gain access to the actual MCA hardware in your system In this section we ll take a look at the procedures used for setting up that da tabase Viewing the Current Database To view the current contents of the database click on the Database menu s View com mand which will pop up the display shown in Figure 31 If you click on a line in the list you can use the Device and Settings menus to look at details of that definition Click on OK to close the View window 45 MCA Input Definition View Runtime Input Definition Database MCA Input Size ADC MXR Stab Amp HV Inspector DETO1 8192 1P 1P 1P 1P Inspector DETO2 4096 1P 1P 1M 1P Figure 31 Viewing the Database Loading and Unloading Definitions Before you can use an MCA Definition you ll have to load it into the database so we ll start with that process Note that you can t edit a loaded database you ll first have to un load it as described in Unloading the Database on page 47 The Load Unload functions will be disabled while any Acquisition and Analysis applica tions are running and have open datasources This prevents one user from altering the runtime database while another user is accessing it Loading the Database A new Definition can be loaded into the Database with the Load to command which brings up the Dialog Box in Figure 32 which lets you choose
34. ce gain drift is more pronounced in the upper channels The centroid s channel number can also be typed in from the keyboard then accepted with the Ok button within the control Zero Centroid This control sets the reference channel at the low end of the spectrum for zero intercept stabilization which prevents interference from the effects of gain drift The centroid s channel number can also be typed in from the keyboard then accepted with the Ok button within the control Gain and Zero Window Controls These controls set the width in channels of the upper and lower sampling windows for each Mode The stabilizer uses this setting as its sampling range Defining an MCA Gain and Zero Spacing Controls These two controls set the spacing in channels between the upper and lower sampling windows for each Mode The windows should be placed so that a shift in the peak re flects a significant change in the count rate through the respective windows For example for broad peaks it is not advisable to choose a window with narrow spacing Gain and Zero Mode Controls The Stabilizer s Gain or Zero or both can be set to Off On or Hold If the drift in either mode zero or gain exceeds the Correction Range the overrange flag will be set and that mode will be changed to hold Set that mode to off to clear the overrange flag then correct the cause of the excessive drift before returning the mode to on On enables stabilization for the speci
35. conds at 19 2 kbaud may slow down to 10 20 seconds at 57 kbaud or in extreme cases may lose communications entirely You can optimize your Nal InSpector s communications by making several trials to look for the best performance Start at a high baud rate and if your performance exceeds 10 seconds try a lower rate Repeat this until you see an improvement Be sure the tests are made under your standard operating conditions 20 Hardware Operation For example if you are going to print while acquiring data you will probably need to lower the baud rate The same is true if you are using the S500 Genie 2000 Basic Spec troscopy software with its copy protection key instead of the 504 InSpector Basic Spec troscopy software 4 MCA Input Definition The first step in using your Nal InSpector is to create an MCA Input Definition MID MID Wizard or MID Editor For most systems you ll want to use the MID Wizard to help you set up your MCA s In put Definition quickly and easily If your Input Definition is more complex than the MID Wizard was designed to handle you ll have to use the MID Editor to create your definition It is covered in detail starting on page 23 The MID Wizard To use the MID Wizard open the Genie 2000 folder and select the MID Wizard icon Step 1 The first screen Figure 7 lets you select the MCA you want to create a definition for Choose the Nal InSpector MCA then select the Next button MID Set
36. ctor s operating bias from the Nal InSpector to the detector Computer The computer cable which carries data between the Nal InSpector and the host personal computer attaches to this connector Note Since most laptop computers have power management features which shut off power to non essential circuits you ll have to make sure that the power to your laptop computer s serial port is on before trying to communicate with the Nal InSpector Amp The Amp test point allows you to monitor the amplifier output while manually adjusting the amplifier s pole zero or to verify the performance of the automatic pole zero which is covered in detail in Pole Zero in Appendix D Technical Information of the Ge nie 2000 Operations Manual Preamp The preamplifier cable part of the composite cable attaches to this connector It provides power from the Nal InSpector to the preamp and carries the output signal from the exter nal preamp or amplifier 11 e f Q E e 2 25 od eS O Mmm e Figure 5 The Inspector s Rear Panel Hardware Operation Hardware Operation The Power System Power is always provided by one of the two batteries thus allowing a discharged battery to be replaced while the Nal InSpector is acquiring data Furthermore since the Nal In Spector uses commercially available camcorder bat
37. ector Amplifier or an external Manual Amplifier Defining an MCA Amplifier for input DET01 Device Driver Protocol Driver Inspector Amp Inspector Serial r Control arial z Programmable Internal MCA Figure 18 The Amplifier Device Dialog The Settings The commands in the Settings menu shown in Figure 19 set the operating parameters for the InSpector s MCA and front end electronics Settings MCA ADC MXR Stabilizer Amplifier High Voltage Power Mgmt Vacuum Input Figure 19 The Settings Menu 31 MCA Input Definition Many of the parameters can be adjusted both in the MID Editor and in the Acquisition and Analysis application The descriptions of each of the parameters specifies which con trols can be changed only in the MID Editor MCA The InSpector MCA does not have any adjustable controls ADC Click on ADC to see the Dialog Box shown in Figure 20 which is used to set the initial operating parameters for the InSpector s programmable ADC ADC for input DET01 ULD ID 116 Figure 20 The ADC Settings Dialog Since the ADC s controls may need to be changed often in the course of daily work they can be adjusted both here and in the Aquisition and Analysis application Note This window s initial focus is on the Cancel button pressing the keyboard s ENTER key after making changes in this dialog b
38. ely 1 us shaping time constant PUR Pulse pileup is a condition where two pulses from the preamplifier are so close together in time that the ADC could see them as one When PUR is on these piled up pulses are ignored by the ADC and a correction is provided to the Nal InSpector s Live Timer cir cuit Input Polarity The amplifier s Input Polarity control allows you to match the polarity of the amplifier s Input to that of your preamplifier s output signal Pole Zero The Nal InSpector s amplifer can be either automatically or manually pole zeroed Auto P Z The START control initiates automatic pole zero which performs a set of iter ative calculations and adjustments to match the preamplifier output to the amplifier input Manual P Z In some unusual circumstances the auto pole zero may fail to converge to an optimal value The slider control allows you to manually adjust the pole zero setting For specific information on how to perform a manual pole zero refer to Manual Pole Zero in Appendix D Technical Information of the Genie 2000 Operations Man ual Hardware Operation The ADC The Nal InSpector s ADC receives the amplifier s output pulses sorts them by ampli tude and stores each converted pulse in memory building a histogram of spectral data The ADC has four programmable controls Conversion Gain LLD ULD and Zero Conversion Gain One of the factors affecting the generation of a pulse height spectrum is
39. em capacity for processing mouse clicks marker and cursor interactions etc You should normally turn off the Marker Info status page during acquisition When this page is displayed the system has to calculate centroids area integral etc at each update This adds a processing burden that slows the update rate If you do need to use the Markers Info page to monitor an ROI for instance make sure the markers are set around the ROI If you leave the markers set to full spectrum there is more data to analyze which will make your screen update noticeably slower The update rate also depends on the size of the spectrum A 512 channel Nal spectrum updates much more quickly than an 8K Ge spectrum Though the Nal InSpector is capable of serial communications at up to 115 kbaud most notebook computers don t work well at such fast data transfer rates In addition most notebooks have a smaller communications buffer which means that even if capable of a high baud rate they will slow down dramatically if asked to communicate with another device such as a printer while the Nal InSpector is acquiring data Interestingly trying to run at a rate that is too fast actually slows the system down This is because the communications circuitry is not keeping up drops characters errors are gen erated and the system retries The repeated retries consume considerable CPU resources Under these circumstances a system that may update the screen in 2 1 2 se
40. en the Stabilizer s Centroid Window and window Spacing on a typical peak Gain Centroid This control sets the reference channel at the high end of the spectrum for gain stabiliza tion since gain drift is more pronounced in the upper channels Zero Centroid This control sets the reference channel at the low end of the spectrum for zero intercept stabilization which prevents interference from the effects of gain drift Gain and Zero Window These two controls set the Gain and Zero stabilizer window width in channels that the stabilizer is to use as its sampling range for each Mode Gain and Zero Spacing These two controls set the spacing in channels between the upper and lower sampling windows for each Mode Hardware Operation Spacing MA Window Centroid Figure 6 Relationship Between Stabilizer Functions Gain and Zero Mode The Stabilizer s Gain or Zero or both can be set to Off On or Hold Onenables stabilization for the specified mode allowing the Stabilizer to compare the incoming data to the Mode s Centroid and Window settings then compensate for data below or above the Centroid Off disables stabilization for the specified mode and sets the correction adjustment to zero Hold disables stabilization for the specified mode and maintains the current correction adjustment at the Stabilizer s output If the drift in either mode zero or gain exceeds the Correction Range the overrange flag
41. fied mode allowing the Stabilizer to compare the incoming data to the Mode s Centroid and Window settings then compensate for data below or above the Centroid Off disables stabilization for the specified mode and sets the correction adjustment to zero and clears the overrange flag if it was set Hold disables stabilization for the specified mode but maintains the current correction at the Stabilizer s output Correction rng This control not available on the Nal InSpector selects the Gain Correction range that can be provided to correct for drift Select 1 for a germanium detector or 10 for a sodium iodide detector This control cannot be set in the Aquisition and Analysis applica tion Gain and Zero Rate Div The Rate Divisor controls which can be set to 1 2 4 or 8 adjust the count rate dividers at the input to the correction registers for each Mode For high count rate reference peaks increasing the Divider value will smooth out the correction applied to the system and minimize any peak broadening These controls cannot be set in the Aquisition and Analy sis application Amplifier Selecting the Amplifier command will pop up the Dialog Box shown in Figure 23 Some of the controls shown in the figure may not be available on your InSpector 35 36 MCA Input Definition Amplifier for input DETO1 Coarse gain Fine Gainey amp fine gain Shaping mode 1 00x 1 00001x QSlow QFast
42. fier s power cable and change the power mode to Battery Full or AC Full If successful the fault will be cleared Rear Panel Connectors TP101 Amp This test point monitors the InSpector amplifier s output At this point a full scale signal is 7 V When using this test point connect the scope ground to any convenient un painted chassis point on or any access screws on the bottom of the InSpector J101 HV This SHV connector provides detector bias The HVPS programmable range is 1300 V at 500 uA 49 50 J102 Preamp Technical Information This 13 pin Cannon DBM53513 1643 connector provides signal connections and power for the detector s preamplifier Pin Signal Description A1 Coax Energy In A2 Coax TRP Reset In A3 Coax HV Inhibit In 1 Gnd Ground 2 Gnd Clean Ground 3 No connection 4 12V 5 at 80 mA max 5 Reserved 6 24V 5 at 30 mA max T 24 V 5 at 40 mA max 8 No connection 9 12V 5 at 30 mA max 10 No Connection Maximum total preamp power is 2 4 W J103 Computer The computer connector is a 9 pin male D type connector Pin Description 2 3 No connection TX Transmit Data Out RS 232 TX Receive Data In RS 232 No connection Gnd Ground Rear Panel Connectors Pin Signal Description 6 No connnection 7 RTS Request to Send In RS 232 n
43. for data ac quisition It is meant to be used when the MCA or its front end electronics are tempo rarily disconnected Saving the Input Definition Having completed our definition the next step is to save it in a disk file so it can be used in the future To remind you that you need to do this you ll see an asterisk in the Title Bar next to the name of the current definition The asterisk means that the definition has been changed but not yet saved To save your definition click on the File menu s Save command When you do that you ll see the Dialog Box shown in Figure 27 CAUTION If you have changed an existing Input Definition saving it will set its calibrations to default and will clear the Acquisition Start time m Save s Figure 27 The Save As Dialog 41 MCA Input Definition Save and Save As Even though you selected the Save command you ll notice that the Dialog Box is labeled Save As This is because the Save command is really a Replace the old version with a new one command and we don t have an old version of our table to replace ours is still labeled Untitled which means it has never been Saved The system realizes this and automatically pops up the Save As Dialog Box so we can assign a name to our table Using Save As Since the word Untitled displayed in the File Name Text Input box is already high lighted all you have to do to replace it is type any legal file name then press the TAB
44. i de pu 12 Power Modes 0 Rte Rees p 17 39 Refreshing eise il lE bind 12 Replacing with the adapter 12 Standby mode i e REP 18 Status indicators llle eese 8 Status screen entry o oooooooooomooo 48 Baud rate AULO SENSING eesse runot idr SPOS pP eo 30 Selecting ok gee cage Lode DUE CROP VP 30 Cable COMPUTED ied eid nete heed Pee ese 5 Connections e ocios BEE RE ER 5 Bnetgy eccere teuhe tuur STEP SEXO neue Y 7 High voltage os ce cose coe ee RESP RSEN 7 Preamp composite connecting 6 PREAMP POWET 23 o vL dete eG EE ele aes 7 Centroid Gain zero function of 00 15 Changing The inputs name sica wees xe 40 Charge life of battery 18 Charger battery oo 12 Charging the batteries 3 12 Coarse gain amplifier 36 Com port selecting o 30 Communications port selection 30 Complete system components 3 Components Basic syste essc ei en 2 Complete system llle esses 3 Composite cable connecting 6 Computer Cable connecting the o oo o ooo o 5 Connector pinout e soiree l l esee 50 Configuration database 45 Connecting the system cables 5 Connector pin outs s s o s e t eeo o 49 59 Connectors rear panel 10 Conversion gain ADC e eie ea NE 32 SA 14 Correction range Stabilizer control
45. l can be set only in this Dialog Box it cannot be changed in the Aquisition and Analysis application Preamp Type Use the Preamp Type control not available on the Nal InSpector to specify whether your preamp is a TRP transistor reset preamplifier type or an RC resistor capacitor type preamplifier This control can be set only in this Dialog Box it cannot be changed in the Aquisition and Analysis application Inh Polarity If you are using a TRP preamplifier the Inh Polarity control not available on the Nal InSpector matches the polarity of the amplifier s Inhibit reset input to the polarity of the preamp s Inhibit output This control can be set only in this Dialog Box it cannot be changed in the Aquisition and Analysis application Refer to Adjusting the TRP Reset Pulse in Appendix D Technical Information of the Genie 2000 Operations Manual for instructions on adjusting the TRP s Inhibit pulse width for proper operation High Voltage The High Voltage command shown in Figure 24 adjusts the High Voltage Power Sup ply HVPS Some of the controls shown in the figure may not be available on your In Spector High Voltage Supply for input DET01 Range Voltage limit Voltage O 5000v 1300 0v 0 0v dico CC gt Xk aD O 5000v 1300 lo 1300 x a Figure 24 The HVPS Settings Dialog Note This window s initial focus is on the Cancel button pressing the keyboard s ENTER key after making
46. lly charged batteries will provide power depends on the Power Manager mode nthe Battery Full mode two fully charged batteries will last a total of about four hours nthe Battery Save mode the batteries can operate for at least 24 hours nthe Standby mode they can operate for more than 80 hours Note that though no current is drained from the batteries when the Nal InSpector s power switch is off they will lose their charge within about 90 days because NiMH batteries don t retain a charge for very long Hardware Operation Tuning the Display Environment The Nal InSpector s performance is most affected by the communications burden being placed on the system The more communications you demand of your system the slower the response will be For instance the software is at its busiest when the Nal InSpector is acquiring data and scaling it for display To get the absolute best performance set your system up as follows Under Display Preferences set the plot mode to Normal Plot which is meant to be used during data acquisition Using the Full Plot mode which is meant for close interaction with an acquired spectrum will slow update rates to 10 seconds or more To find the fastest update rate Display Preferences by setting the update rate to 0 start an acquisition and note how much Real Time passes with each update Add 1 2 to 1 second to this to establish a your best update rate This allows some syst
47. n Editor with the File menu s Open com mand which uses the Dialog Box shown in Figure 29 If you know which file you want to edit double click on its name to open it in the editor Open Definition Figure 29 The File Open Dialog 43 MCA Input Definition If you have already loaded the definition into the MCA Runtime Configuration Database it must first be unloaded before it can be opened in the editor See Unloading the Data base on page 47 for the procedure to use Viewing the File Details If you re not sure which file you want to edit click on the name of the file that you think is the correct one then click on the Info button to see further information about the file Doing that will pop up the Dialog Box shown in Figure 30 File Info File Name SAMPLE File Descriptor Sample Input Definition File File Type MCA Input Definition Editor Version V2 0 Figure 30 The File Info Display The key piece of information here is the File Descriptor which is the extended file name that you added when the file was originally saved From this you should better be able to determine if the file you selected is the one you want When you re finished with the file details click on OK to return to the Open Dialog Box Now you can either click on the Open button to open the file you selected or select a dif ferent file and view its details Editing the Definition All of the menus and commands available for defini
48. n be maintained indefinitely by replacing the discharged battery with a fully charged one as the Power Manager switches from old to new The Power Manager accessible in the MID Editor or the Acquisition and Analysis appli cation allows you to choose the power mode Battery Full Battery Save or AC Full Battery Full The Battery Full mode provides power continuously to all circuits Battery Save The Battery Save mode minimizes battery drain by turning off some of the Nal InSpec tor s circuits whenever possible For example if acquisition is not active the internal sig nal processing electronics as well as the detector s high voltage bias supply and preamp power are turned off In this mode the host computer can still communicate with the Nal InSpector for instance for data manipulation and read out without power being applied to the entire unit thus greatly extending the life of the battery AC Full The AC Full mode provides power continuously to all circuits from battery port A If the AC Power Adapter is connected to this port it will supply power to the Nal InSpector Refer to the AC Power Adapter s manual for complete instructions on its use If ac power is lost the Power Manager will automatically switch to port B allowing its battery to supply power When ac power is restored the Power Manager will switch back to port A Hardware Operation Standby The battery save mode has an adjustable Standby Delay enabled
49. n this chap ter are examples of what you might see your display may not be identical Building an MCA Definition Interpreting the Definition Entry As you can see in Figure 14 adding the entry put more than just the name of the MCA in the definition table We ll take a brief look at the other items in the entry now As we get further into the definition process we ll cover them in greater detail Note the letter fol lowing the unit number in each Definition Table item an M indicates a manually con trolled unit and a P indicates a programmable unit Figure 14 An Inspector Has Been Added to the Table MCA This is the type of MCA device being used for this particular entry in the table Input This is the name that will be used to refer to this specific hardware entry in the table The MID Editor automatically assigns these names sequentially as DETnn starting with nn 01 As we ll see in Input Name on page 40 you can easily change these names to something you find more meaningful Size This is the number of data channels assigned to this input ADC This column displays the type of ADC associated with the MCA MXR This column is for multi input hardware it doesn t apply to the InSpector 27 MCA Input Definition Stab Stabilizer This column describes the Stabilizer associated with the MCA Amp This column describes the Amplifier associated with the MCA HV This column describes the High Voltage Power
50. nSpector MCAs The remainder of this chapter discusses how the definition is saved to a disk file how a definition can be edited and how to use a definition by loading the file into the MCA Runtime Configuration Database Adding an MCA The Edit menu shown in Figure 12 is used to add MCA hardware to or delete MCA hardware from an MCA Input Definition Add MCA Figure 12 The Edit Menu 25 26 MCA Input Definition To add an MCA click on the Add MCA command in the Edit menu which will pop up the Add MCAs to Definition Table Dialog Box Figure 13 shows a typical Add MCA list box allowing you to add an InSpector MCA to the MCA Definition Table You can add more InSpector MCAs to the definition at any time with this command ij Add MCA s to Definition Table Available MCAs Al AccuSpec AccuSpec B AccuSpec Nal AccuSpec Nal Desktop InSpector InSpector Nal InSpector Add Figure 13 The Add MCA Dialog To add an MCA to your definition you can 1 Click on your choice then click on the Add button or 2 Double click on your choice Either way you ll see an entry added to the MCA Definition Table for each such selec tion you make When you ve added your MCA to this definition click on the OK button to return to the main MID window Figure 14 shows the result of using this process to add a single InSpector MCA to the Definition Table Please remember that this display as well as many others i
51. ng an MCA are also used for editing a definition Just click on the entry you want to change and apply the commands as be fore When you ve finished editing the definition Save it 44 Using MCA Definition Tables The New Command If you want to create a totally new MCA Definition the File menu s New command clears the definition table so you can begin a new definition Because New is a destructive operation selecting it will cause the program to ask for a confirmation in one of two ways 1 Ifthe Definition currently being displayed has not been changed since it was last saved no asterisk in the Title Bar you will be asked if you want to erase the current Definition Click on OK to erase it or Cancel to return to the Input Definition Editor 2 If the Definition currently being displayed has been changed but not saved you will be given a chance to save it The Input Definition Report The File menu s Report command always saves to a disk file but if you click on Yes in the dialog box that pops up you can send the report to a disk file and print the report as well Click on No to save it to a disk file without printing the report Using MCA Definition Tables The whole purpose behind building MCA Input Definitions is to let the InSpector know the number and types of MCAs you ll be using with your system You do this by loading one or more MCA Definition Files into the MCA Runtime Configuration Database This database is sh
52. ng term drift of output voltage is lt 0 01 h and lt 0 02 8 h at constant load and ambient temperature after a 30 minute warmup TEMPERATURE COEFFICIENT lt 50ppm C after a 30 minute warmup REGULATION lt 0 02 variation in output voltage over the load range at constant am bient temperature OVERLOAD PROTECTION Power supply will withstand any overload including a short circuit for an indefinite period CURRENT LIMIT 1 6 mA maximum SETTLING TIME 100 V s turn on or turn off Performance Amplifier ADC GAIN RANGE Programmable from X2 to X1500 based on a 10 V full scale output programmable resolution of 1 part in 16 000 SHAPING TIME Programmable fast 0 5 us or slow 1 us POLE ZERO Automatic 40 us to co range DRIFT Gain lt 0 0075 C dc level lt 7 5 u V C PULSE SHAPING Near Gaussian shape one differentiator two active filter integrators realizing five pole shaping network shaping time parameters referenced to 1 us are listed in the following table Shaping Time Multiplier Parameter Gaussian Time to peak 2 85 0 1 full scale output to peak 2 3 Pulse width at half maximum 25 Pulse width at tenth maximum 6 1 Pulse width at 1 100 maximum 7 1 RESTORER Active gated CONVERTER 100 MHz Wilkinson CONVERSION GAIN 2048 1024 512 256 LLD Range 0 1 to 110 of full scale programmable resolution of 1 part in 3152 ULD Ra
53. nge 0 to 110 of full scale programmable resolution of 1 part in 3155 55 Specifications ZERO Range 0 5 of full scale programmable resolution of 1 part in 3414 INTEGRAL NONLINEARITY lt 0 025 of full scale over the top 99 5 of selected gain range DIFFERENTIAL NONLINEARITY lt 0 9 over the top 99 5 of selected gain range DRIFT Gain 0 00996 of full scale C Zero lt 0 0025 of full scale C Long Term lt 0 005 of full scale 24 hours at a constant temperature PEAK SHIFT lt 0 025 of full scale at rates up to 100 kHz CHANNEL PROFILE Typically flat over 9096 of channel width Digital Stabilizer STABILIZATION MODE Two point stabilization using spectrum reference peaks PEAK RANGE Channel 3 to 2048 PEAK WINDOW 1 to 64 channels WINDOW SPACING 2 to 256 channels windows symmetrically positioned on either side of peak CORRECTION RANGE Zero 1 of full scale Gain 10 of full scale program mable CORRECTION RESOLUTION 1 part in 4096 RATE DIVIDER 1 2 4 or 8 Pileup Rejector PULSE PAIR RESOLUTION lt 500 ns Physical MINIMUM DETECTABLE SIGNAL Limited by detector preamplifier noise charac teristics Acquisition DATA MEMORY 2048 channels 32 bits per channel battery backed STORAGE MODE PHA ADD ACQUISITION GROUP SIZE Always 2048 channels DISPLAY GROUP SIZE 2048 1024 512 or 256 PRESET MODE Live or Real Time computational presets are pe
54. ntly supplying power but its charge is very low Steady Red The battery is not supplying power and is low or nearly discharged it is ready to be removed and recharged Off Both batteries are completely discharged or no battery is connnected to this port or the power switch is off Battery Locations Looking at the rear panel battery A is on the right and battery B is on the left If you are looking at the front panel each battery is on the same side as its indicator For instance indicator A is on the left and its battery is directly behind it Hardware Operation Joyealpu uonisinboy Joyeoipu AH g pue v SJojeoipu Aieneg s Front Panel 1 Figure 4 The Inspector Hardware Operation Acquisition Indicator When data acquisition is active the red ACQ indicator on the right side of the front panel turns on High Voltage Indicator When high voltage is present at the rear panel High Voltage connector the red HV indi cator on the right side of the front panel turns on The Connectors Figure 5 shows that in addition to the two battery ports which are described in The Power System on page 12 the rear panel has four connectors HV high voltage Com puter Amp and Preamplifier The Nal InSpector s connecting cables are discussed in more detail in Connecting the System on page 5 HV The high voltage cable which is part of the composite cable attaches to this connector It supplies the dete
55. o function Clear to Send Out RS 232 o ols Space High 9 No connection Shield Gnd Ground Autobaud protocol at startup to determine baud rate 1200 9600 19 2 k 38 4k 57 6k or 115 2 k 8 data bits even parity 1 stop bit 51 B Specifications Input Output DETECTOR Rear panel weather resistant quick disconnect signal and power connector containing the following signals AMP ADC IN Programmed to accept preamp signals or external amplifier outputs BNC connector INT AMP MODE Accepts positive or negative tail pulses amplitude 10 V divided by the selected gain 25 V maximum rise time less than shaping time constant decay time constant 40 us to co polarity programmable R 9 KQ gt R gt 0 95 KQ R changes with Gain and Polarity setting EXT AMP MODE Accepts positive unipolar or bipolar positive lobe leading pulses for PHA amplitude 0 to 10 V 12 V maximum rise time 0 25 to 100 us maximum width 5 us minimum input impedance 1kQ direct coupled PREAMP POWER x12 V dc 24 V dc HVPS OUT Programmable 1300 V dc with 500 LA output current capability pro grammable range resolution of 1 part in 4096 rear panel SHV connector isolated from chassis ground by 47 Q resistor DATA INTERFACE EIA RS 232 interface to host personal computer 9 pin connector auto sense selection of data transfer rates 115 2 57 6 38 4 19 2 9 6 1 2 kbaud Controls ON OFF No power
56. ons or noise due to ground loops radio frequency interference RFI or electromagnetic in terference EMI When grounding the Nal InSpector is required a ground connector can be attached to any of the screws on the bottom of its case all of these screws make posi tive electrical contact with both circuit and chassis ground 3 Hardware Operation This chapter introduces the Nal InSpector s indicators and programmable electronics and describes the purpose and use of each of the Nal InSpector s functions Power Switch The Nal InSpector s power switch is located on the left side of the unit toward the rear In the on position the batteries are load tested and continually monitored with their status shown by the Nal InSpector s front panel battery indicators Two external NiCd batteries supply operating power to the Nal InSpector while an internal lithium battery retains spectral data in the memory even when the power switch is turned off The Status Indicators The Nal InSpector s front panel status indicators Figure 4 show the state of each of the two batteries the acquisition status and the high voltage status Battery Indicators The status of the two batteries is shown by the color and state of the A and B indica tors on the left side of the front panel Steady Green The battery has a charge and is not in use Blinking Green The battery is currently supplying power Blinking Red The battery is curre
57. oooooooooooooo oo 35 Current database viewing the 45 D Database Loading a definition to 46 Runtime configuration 45 Unloading a definition from 47 Viewing the current 45 Defining An MCA oes ep oa ah 28 ATM A nh e fears 25 Delay ACQUISIION eicere Pg e pes 39 Standby i23 uiid RAE keene p SE E 39 Deleting ADMCA sees np ERI YE p 28 Device setups 0009 xx Es 29 Discharging a battery 12 E Editing An MCA DefinitlON o ooooocococoooo 43 An MID Definition 04 43 Energy Cable connecting 0000 7 Explanation of the status screen 48 F File descriptor useof 42 Fine gain amplifier 36 G Gain Amplifier function of 04 13 Centroid control 2 2 02 0 0 34 Centroid function of o oooooo oo 15 Mode stabilizer x ck E et ERES 35 Rate divisor oooooooooooo 16 35 Spacing stabilizer ooo o oooooo o 35 Spacing function of 04 15 Window stabilizer o oo o o o 34 Window function of oooooo o 15 60 Grounding the system 7 High voltage Automatic turn ON 0 00000 15 Cable nist eg sed eure Bed PUE oen 7 Indico 2t s use a D UPS 10 Purpose Of 2 ness eed ewan ERES 14 A tig oy pep be xd RENE 38 Resetting the usse ss Seed S 15
58. op InSpector shown in Figure 25 is used to set several of the InSpector s Power Management controls all of which can also be changed in the Aquisition and Analysis application Some of the con trols shown in the figure may not be available on your InSpector Power Management for input DET01 Power mode Standby delay O Batt Full a Batt Save OQ AC Full 0 x Deren Figure 25 The Power Management Settings Dialog Defining an MCA Note This window s initial focus is on the Cancel button pressing the keyboard s ENTER key after making changes in this dialog box will cancel the changes Be sure to click on the OK key to accept the changes Power Mode The Power mode controls let you switch the InSpector s operating mode The Battery Full mode keeps the electronics on at all times using power from the instrument s batteries The Battery Save mode minimizes battery drain by turning off some of the InSpector s circuits whenever possible When data acquisition is initiated the system changes to the Battery Full mode and data acquisition begins after the Acquisition Delay time has elapsed not available on the Nal InSpector This allows time for the high voltage to reach its preset value and for the internal electronics to become thermally stable When acquisition is finished the system returns to the Battery Save mode In the AC Full mode the InSpector operates from battery port A Ifthe AC Power Adapter is connected
59. ox will cancel the changes Be sure to click on the OK key to accept the changes Conv Gain This control sets the Conversion Gain of the ADC over the range of 256 channels to 8192 channels Clicking either on the arrows at the ends of the Scroll Bar or in the area to ei ther side of the Scroll Bar s Slider will change the gain by a factor of two LLD The ADC s Lower Level Discriminator LLD can be set from 0 1 to 110 0 of the ADC s full scale input n 32 Defining an MCA ULD The ADC s Upper Level Discriminator ULD can be set from 0 0 to 110 096 of the ADC s full scale input The window between the LLD and ULD settings is used as a filter to limit the energy range to be considered by the ADC Only signals within this window will be converted Zero The ADC s Zero is factory set for each conversion gain so that a Zero setting of 0 cor responds to zero intercept zero energy input stores in channel 3 the first channel used for spectral data storage for that conversion gain The Zero control with a range of 5 0 to 5 0 of full scale can be used to change the zero intercept to another channel Stabilizer The InSpector s Stabilizer maintains the stability of high resolution spectroscopy in ap plications involving long count times or high count rates It accomplishes this by using reference peaks in the spectrum and correcting the ADC s conversion gain or its zero in tercept or both to keep these peaks from d
60. page 45 When you select Finish you will be asked if you would like to define another input Answering No will close the Wiz ard Note that if you didn t enter an Input Name you won t be allowed to exit the Step 6 screen If the name you entered is the same as the name of an existing MID file the sys tem will tell you so and go back to Step 6 to let you enter another name The MCA Input Definition Editor You ll have to use the MID Editor only if you want to change default settings for any of the InSpector s programmable components The remainder of this chapter tells you how to use the MID Editor to make those changes 23 MCA Input Definition Basic Concepts We ll begin with some basic concepts that are important to understand before actually getting into the details of how you define your system s MCAs Multiple MCA Configurations Since MCA definitions are saved in disk files you can have as many definitions as you like For example you might have one MCA defined as an 1K Sodium Iodide Spectros copy MCA in one file and another as a 2K Sodium Iodide Spectroscopy MCA in another file Before you start an experiment you simply pick the configuration you want to use Because an MCA definition file can include any or all of the MCAs that are available to your system you can use more than one MCA at a time However each MCA can be in cluded only once in a given definition file and each MCA in that file must have a unique name
61. r Programmable via computer refer to the earlier ac adapter description Full Power Signal processing electronics under full power Power Save Turns off power to the signal processing electronics Electronics are automatically powered up at the start of acquisition and off at completion Standby Lowest power mode during periods when there is no communication with the computer Host computer can restore to the Power Save or Full Power modes Off Controlled by the On Off switch only No power is consumed in the off position 53 Specifications LOW BATTERY SENSOR When both batteries become fully discharged the unit will automatically switch to the off state disconnecting the batteries to prevent damage due to deep discharge SYSTEM CONTROL The instrument can be manually directed into any power mode via the computer or can be set to automatically switch between Power Save and Full Power Modes corresponding to acquisition status PREAMP POWER Provides power and ground for standard preamplifiers 24 V at 40 mA 24 V at 30 mA 12 V at 80 mA and 12 V at 30 mA maximum total power 2 4 W Performance 54 HVPS RANGE Programmable 5 V to 1 3 kV resolution to within 1 part in 4096 rear panel SHV connector LOAD CURRENT 500 uA below 65 V linearly derated at 1 3 WA per volt NON LINEARITY lt 0 3 of full scale RIPPLE AND NOISE AT RATED LOAD CURRENT lt 5 mV peak to peak OUTPUT STABILITY Lo
62. rformed by the host computer TIME RESOLUTION 0 01 s PRESET TIME 1 to gt 10 s TIMER STORAGE Memory channels 1 live time and 2 real time Physical SIZE 26 9 x 27 2 x 4 8 cm 10 6 x 10 7 x 1 9 in WEIGHT 3 2 kg 7 0 Ib with batteries OPERATING TEMPERATURE 0 45 C RELATIVE HUMIDITY 8 80 non condensing Ordering Information Model 1260 Nal InSpector Portable Workstation components include e Nal InSpector acquisition electronics unit Genie 2000 Basic Spectroscopy Software S504 57 Specifications Serial communications cable C1715 2 Composite quick disconnect detector cable 3 m 10 ft C1712 10 Model 1213 ac adapter charger Pair of Duracell DR11 3 6 amp hr or equivalent battery packs Carrying Case Consult factory for Genie 2000 and Windows 95 NT ordering information Options Model 1212 Cigarette Lighter Adapter Sony or equivalent Model 1231 Spare Duracell DR11 battery 501 Genie 2000 Gamma Analysis Software 505 Genie 2000 Quality Assurance Software Special Composite Cable C1712 25 same as the standard C1712 10 cable but 7 6 m 25 ft long Minimum Computer Requirements 486 processor 486 and coprocessor recommended 16 MB RAM memory more will improve performance 200 MB hard drive Windows 95 or Windows NT for Genie 2000 software 58 Index A AC power USING s uos soe PUES uy RR 12 Acquisition Delay coBtrol
63. rifting The count rates in these reference peaks should be high enough to be significantly more than the background in their chosen stabilizer windows Selecting the Stabilizer command pops up the Dialog Box shown in Figure 21 Some of the controls shown in the figure may not be available on your InSpector Digital Stabilizer for input DET01 y Gain centroid Gain window y Gain spacing y r Gain mode 200 ch 5 chs 4 chs ott QO0n i2 256 QHold window Zero spacing Zero mode 100 ch 5 chs 4 chs Off l Qon p 2568 OHold p Correction rng Gain rate div Zero rate div 1X Ge 1 1 Q 1026 Nal I 1 j H Figure 21 The Stabilizer Settings Dialog 33 MCA Input Definition Note This window s initial focus is on the Cancel button pressing the keyboard s ENTER key after making changes in this dialog box will cancel the changes Be sure to click on the OK key to accept the changes Figure 22 shows the relationship between the Stabilizer s Centroid Window and window Spacing on a typical peak Spacing Window Centroid Figure 22 Relationship Between Stabilizer Functions Gain Centroid This control sets the reference channel at the high end of the spectrum for gain stabiliza tion sin
64. teries extra ones are readily available More information about how the Nal InSpector manages its power consumption can be found in Power Management on page 38 The AC Power Adapter If the Power Adapter is connected to battery port A with the adapter s connecting cable and the Nal InSpector s Power Manager is set to AC Full page 17 the adapter will supply power to the Nal InSpector conserving the batteries for times when ac power is not available Low Battery Sensor If both batteries become fully discharged the Nal InSpector s low battery sensor will au tomatically turn the unit off disconnecting the batteries to prevent damage due to deep discharge Charging a Battery To charge a battery remove it from the Nal InSpector attach it to the charger and plug the charger into a line power outlet The charger s orange Charge lamp will stay on while the battery is being charged When the lamp goes out the battery is fully charged Refer to the charger s user s manual for complete instructions To avoid reducing the battery s capacity and to maintain battery performance the manu facturer recommends that a NiMH battery be fully discharged once every five charges Refer to the charger s manual for complete instructions Programmable Electronics 12 The Nal InSpector s front end electronics are fully programmable eliminating physical switches knobs and jumpers The initial setting of the programmable functions is
65. ttery charge 18 LED control ADC 14 32 LLD ULD function Of 14 Load A datab se i cep Eb d na eua 46 Multiple definitions 47 Low battery sensor o 12 MCA Database 0s eee ERR eased 45 Defining in the MI e ooo 28 Editing a definition 0 04 43 Runtime configuration database 45 Saving a definition 0 04 41 Using an MID definition 24 MCA input definition MID W z td is id a a 21 MCA Input definition editor See MID editor MCA settings llle 32 MID editor Adding an MCA oococcccccocco 25 MID vazard asc etr ita de 21 MID editor Basic concepts Ofri iria iiia aiaia ni 24 Creating a new definition 45 Dehmng an MCA eo eR 28 Definition summary 04 43 Deleting an MCA iia cs 8G 28 Editing a definitiOM ooo ooooooooo 43 Entry defining sean ee Ete ees 25 New definition llle esee 45 Saving a definition 00 41 Summary VieW esee 43 Using an MCA definition 24 MID wizard 2 22 ss 21 Modes power o eccess eeren easa 39 Modes power o e core s sa 17 Multiple MCA configurations o oocoococooooo 24 Nal InSpectors connecting 5 Nal InSpector Basic system components 2 Complete system components 3 N
66. up Wizard Step 1 To start select an MCA device from the list below Available MCAs 5100 AIM AccuSpec A Figure 7 Step 1 21 MCA Input Definition Step 2 The Step 2 screen will ask you to define the MCA s Full Memory assignment Communi cations port and Baud Rate as shown Figure 8 MID Setup Wizard Step 2 Enter COM port and baud rate for the MCA MCA Full Memory Ow cg Oe Og COM Port pr Baud Rate COMI x 18200 z lt Back Cancel Help Figure 8 Step 2 Steps 3 and 4 You won t see the screens for Steps 3 and 4 these steps are not used when setting up an Nal InSpector MCA Step 5 The screen in Figure 9 asks you to define the high voltage power supply s Voltage limit and Voltage MID Setup Wizard Step 5 Voltage Voltage limit Ov 1300v lt Back Cancel Help Figure 9 Step 5 22 The MCA Input Definition Editor Step 6 The Step 6 screen in Figure 10 asks for a detector type and acquisition memory size and requires that an Input Name be entered MID Setup Wizard Step 6 Detector Type Na hd iJ Input Name Number of Channels 2048 Cp Figure 10 Step 5 Ending the Definition To complete your Input Definition select Finish The input that you just defined will be stored as an MID file named inputname MID and automatically loaded into the MCA Runtime Configuration Database described on
67. uration This chapter serves as a guide to unpacking and connecting the system Software installa tion is covered in Appendix A of the Genie 2000 Operations Manual Unpacking the Nal InSpector When you receive your Nal InSpector hardware examine it carefully for evidence of damage caused in transit If damage is found notify Canberra and the carrier immedi ately Use the following checklists to verify that you have received all system components Basic System Your package should contain the following items The Nal InSpector acquisition electronics unit This manual Onecomputer communications cable Onecomposite preamplifier cable Two NiMH batteries Duracell DR11 or equivalent Note The Nal InSpector s nickel metal hydride NiMH batteries are shipped uncharged you must charge them before using them Refer to Charging the Batteries below One ac adapter One battery charger discharger e A carrying case Unpacking the Nal InSpector System Options If you ordered optional Nal InSpector items your package will include any additional items you ordered Complete System A complete system consists of all of the items in the Basic System plus a notebook com puter All software will have been installed on the computer and the system will have been configured and tested at the factory Charging the Batteries Before the NiMH batteries shipped with the Nal InSpector can be used they must be charged

1260 NaI InSpector User`s Manual

Contents

Download Pdf Manuals

Related Search

Related Contents