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1. This document is the exclusive property of TSA Systems Ltd 4 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 4 5 NEUTRON PARAMETERS Permits the operator to view the neutron parameters figure 4W The parameters cannot be changed from the PC SC 7 70 Neutron Parameters Parameters High Alarm N Occup Count BY Mas Intervals M Alarm Count T Bkg Time Clack Calendar uos MM DD YY HH MM Alpha LLD 149 12 e oos ut 54 ULE Figure 4W 4 5 1 Neutron Show Count Displays the neutron counts in cps for each detector and the sum figure 4X The data is updated every second SC 7 70 Show Detector Neutron Counts Show Detector Counts This document is the exclusive property of TSA Systems Ltd 42 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 9 0THEORY OF OPERATION The software algorithms are totally different for the gamma and neutron
2. m 13 L8 3519 393550 0 2 T t 14 3 3 PROGRAMMING THE SY STENL enisi ius crea Cua dap aa raa RR Edda e utu EA RR x e s ga M 14 3 3 1 GAMMA PARA WIE UR Gioicoccasscrsrciiccisrcudscadaessvenoatavaeasaeiprcsatinpeensanis pP Re nb RE E ERES AsES 17 HLO LEVELS c E M eied 17 INTERAC ea E EEE 18 OCCUP HOLJDPIN 1 cece cccecceccsccceccsccececcscescccecesceececescscesescescesescesceseesesceseeces 18 SIL Gh P oHRCKeG 19 DEL ONLINE M 20 Ri ET 0 023 87 124901 02 0 M 20 SHON E OON Lon 21 ee a eea ve nc ov ac tated sce act pels sagen vs dees acai ectnabeeacseentiad 21 b pls V V V 23 Me CC arses atc senate coer hse UM M E C E 24 RELAY OUTPUT PL 24 3 3 3 ADVANCED GAMMA sies daniduielixhatets kata cn exi ede xeu antt ioco ess dada 25 P8566 d B sl PR RNURRRRRRT A 23 PFG CINI oeo E A 26 SHOW VERSION ce E E EO 26 CER G CNT a E E eee awrectcateet awa deos 27 FALARM TES PT E 27 BEC NSIOUMA eese E E E E EEEO 2d SYSTEM DD i A27 PROFILING
3. 28 ASANEITTEUUM PARAMETERS uasa tz AE SM AMIE MERE LUIMD ER MMMMSEDE 28 This document is the exclusive property of TSA Systems Ltd Unauthorized use or distribution is strictly prohibited m Emme 5ystems Ltd TM 850 Operations and Service Manual Doc 4 5022 Rev A A Uy dr MEET M 28 MAA TIN TS Vb TRE 29 ALPHA PMI EE 29 ZMAX VALUE 30 O TT Ta a E E AE I E Y 30 Jaa NEUTRON FUNE TIUN 30 SHON C OUNT eaa E N EE EEE EOE N E ENEN EE E EE 31 BD RADIU T e r E E 31 CLEAR EQUI e aa T E A EEEE E E E EAEE A 32 NABEUL ENABLE erenn E E E E E E E E E E EE 33 3 3 6 COMM SET 33 IP 33 SODNE T 33 DNS 34 OATEWAI ee E EA E A E E E EE EEA 34 3 4 OPERATIONAL TEST INSTALLATION CHECKLIST 35 MLD sg OR 8A G5 GAG TOE W ELE S uidi essi basada decas ae EXER E Mid ELM CR ia 36 4 1 INSTALLING THE SOFTWANRE eeee n nmm ntItnnnttttttt tette rntnttnttt ttti 36 268 16 4 t 36 4 3 GAMMA PARAMETER ccccsscccssesessescessseessessusesousesssssssnssssausesausesausssssesssausesausesanssss 37 eM Rea Le ee ee ee ee eee eens here 37 4 3 2 Gamma Show c o 38 LA 4 30 9809908515532 aa AA 38 4 4 1 Downloading S
4. 13 11 2011 8 14 20 G AvgBkg 1744 404 424 455 461 ad NAvgBka 8 2 2 2 2 x ae See 4 Figure 4G This document is the exclusive property of TSA Systems Ltd 38 Unauthorized use or distribution is strictly prohibited J i y de e Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 4 4 1 Downloading System History Using SC 770 Com 1 With the monitor turned ON plug the female end of the 9 pin Serial to Serial cable figure 4H into your laptop figure 4J Figure 4J 2 Plug the male end of the cable into the serial port on the top of the SC 770 as pictured below figure 4K Figure 4K 4 The screen figure 4L should appear Click on the right arrow button until the System History tab 1s showing figure 4M then click on the System History tab figure 4N Set op EU PORE gare Lari it Dewnlosd di TO Historical Mata Pet Ganna Parameter Gamma Alarms Data Gamma Show V Gaia Alis Data Garena Show Court Postal Hite Extra 4 0 Gamena Aler Data Garma Show Court Portal Hitory Essa 4 Set Commurnscashong Piot F COH C CUN cC CoM C C ka Darma H euh oes Li rait amber L This document is the exclusive property of TSA Systems Ltd 39 Unauthorized use or distribution is strictly prohibited Ili y U Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 5 The default setting under Dow
5. 4 3 2 Gamma Show Count Displays the gamma counts in cps for each detector and the sum figure 4E The data is updated every 5 seconds SC 7 70 Show Detector Gamma Counts Show Detector Counts 405 Figure 4E 4 4 PORTAL HISTORY Allows the operator to download the entire contents of the system s non volatile RAM or any number of the most recent records figure 4F After the data is downloaded the operator may elect to view the current download or skip this option If the operator chooses to view the history data file it will appear as the sample below figure 4G Download 5C 7 70 Historical Data 1271172011 a 12 11 2001 D 245 PowerUp Q0 Q0 to 13 11 2011 1 458 NAvgBkg 7 1 2 2 2 a a 13 11 2011 1 458 G vgEkg 1717 400 422 442 453 All Records 13 11 2011 13745 Meu HFauk 4028 783 1090 1064 1091 13 11 2011 21420 M AvgBkg 30 6 9 7 8 174 13 11 2011 2 14 20 G AvgBkg 1742 405 433 447 457 13 11 2011 31420 NvgBka 8 2 2 2 2 Selected Records 131 2011 31420 G amp vgBkg 1740 406 428 448 458 OUI ds 19 41 2011 4 14 20 MAvgBkg 8 2 2 2 2 13 11 2011 4 14 20 G AvgBkg 1729 403 425 446 455 13 11 2014 amp 1420 NAvgBkg 8 2 2 2 2 e 13 11 2011 5 14 20 G AvgBkg 1724 402 423 444 455 5 13 11 2011 61420 MvgBkg 8 2 2 2 2 13 11 2011 6 14 20 G vgBkg 1723 398 418 450 457 Download 13 11 2001 7 1420 M AvgBkg 8 2 2 2 2 13 11 2011 7 1420 G AvgBkg 1735 402 421 453 459 13 11 2011 8 14 20 M vgBkg 8 2 2 2 2
6. Ltd Unauthorized use or distribution ts strictly prohibited 29 Systems Ltd TM 850 Operations and Service Manual Doc 4 5022 Rev A ZMAX VALUE This 1s the alarm threshold that is used if the controller has counted to MAX intervals without an alarm decision Its range is from 0 1200 An alarm will occur if this value is less than the current Z value after MAX intervals The factory default setting is 1200 which effectively disables this feature SEQ TEST The sequential number sets the number of consecutive 200ms intervals above background needed to allow a potential neutron alarm or HI fault condition to be acknowledged The normal setting 1s 4 800 mSecs 3 3 5 NEUTRON FUNCTIONS 1 SHOW COUNT Displays detector counts 2 DSCR ADJUST Discriminator adjustment 3 CLEAR N CNTS Clears occupancies and alarms since power up 4 NEU ENABLE Enables the neutron channels This document is the exclusive property of TSA Systems Ltd 30 Unauthorized use or distribution is strictly prohibited Ili y m Emy Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A SHOW COUNT Displays each detector bank counts in cps updated once per second if intervals have been set to something other than 5 the counts will not be represented in cps reference Section 7 2 2 1a Press the po
7. The status screen consists of four lines GAMMA BKG nnnnnn background counts in cps NEUTRON BKG nnnnnn background counts in cps SYSTEM STATUS OK TAMPER or OCCUPIED DATE TIME mm dd yy hh mm SYSTEM STATUS When a pillar door is opened the status line will indicate TAMPER When ac power is lost the status line will indicate TAMPER When an occupancy is sensed the status line will indicate OCCUPIED In addition to the above mentioned TAMPER conditions there are three other fault conditions that can occur during operation Gamma HI Gamma LO and Neutron HI The system is now ready for programming and set up eee This document is the exclusive property of TSA Systems Ltd 12 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 3 0SET UP AND PROGRAMMING 3 1 SET UP The monitor is fully aligned at the factory Since these adjustments may be affected during shipment the alignment should be verified using the Electronic Alignment Procedure in Sections 7 2 2 amp 7 3 1 The SC 770 figure 2C is a general purpose controller that 1s used in several systems It has many user programmable parameters that can be used to optimize it for a wide variety of applications Refer to Section 3 for details on programming the SC 770 Figure 2C SC 770 Controller This document is the exclusive property of TSA Systems Ltd 13
8. i i yl nocobcem Figure 6G Figure 6H This document ts the exclusive property of TSA Systems Ltd 52 Unauthorized use or distribution ts strictly prohibited m ini de Y Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 6 2 2 The HHV 448 The HHV 448 high voltage power supply board figures 6J and 6K provides regulated dc high voltage to the Voltage Divider networks PB 4 7m which are attached to the photo multiplier tube on the detector Also refer to Section 7 2 2 1a figure 7E Figure 6J Figure 6K High Voltage Plate High Voltage Plate Top Side Bottom Side This document is the exclusive property of TSA Systems Ltd 53 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 63 THE DA 630 DETECTOR ASSEMBLY GAMMA The DA 1248 Detector Assembly consists of a plastic scintillation detector coupled to a photo multiplier tube PMT through a plastic light pipe figure 6L A voltage divider signal network VD 580 plugs into the PMT base supplying high voltage to the PMT and returning the gamma signal to the SCA 775 In general the detector converts gamma rays to photons which are amplified as voltage by the PMT The VD 580 is the only field replaceable part and can be removed by releasing the three springs and pulling it away from the PMT base figure 6M The MHV and BNC may be detached before or after
9. power is in the off position at the LD 260 and the ac breaker Battery To remove the battery disconnect the in line connector between the LD 260 and the battery remove the bracket if one 1s installed and lift out To reinstall the battery reverse the previous steps Load Disconnect The load disconnect may be removed by disconnecting the three wiring connectors and removing the two mounting screws To reinstall the load disconnect reverse the previous steps NOTE 5e careful to reinstall the connectors properly as to avoid damaging the LD 260 at power up Battery Charger The battery charger is mounted to the back plate below the LD 260 in the TM 850 reference Section 6 9 NOTE Disconnect the ac power to the system before proceeding Disconnect the cable from the LD 260 and disconnect the ac line cord from the battery charger Remove the charger by removing the mounting screws To reinstall the battery charger reverse the previous steps Neutron Detector Bank contains two He tubes To remove tubes disconnect the MHV connectors unscrew the four screws holding the front lid in place and take off the lid Remove the brackets holding the tubes in place by taking out the screws holding each bracket in place The tubes should now be able to slide out the bottom of the hole Reference Section 6 4 This document is the exclusive property of TSA Systems Ltd 78 Unauthorized use or distribution is strictly prohibited Systems
10. 1s installed in each pillar figure 6F It is made up of the following components Figure 6F This document is the exclusive property of TSA Systems Ltd 5 Unauthorized use or distribution is strictly prohibited TM 850 Operations and Service Manual Doc 45022 Rev A 6 2 1 The SCA 774 The SCA 774 Single Channel Analyzer board figures 6G and 6H is a four channel amplifier SCA board The analog SCA portion of the board uses a dual operational amplifier and a dual comparator to perform the SCA function The SCA 774 has a dc dc converter much like the one on the SC 770 to convert battery voltage to the 5 Vdc required by its components The SCA output is sent to U16 where the digital pulses are timed using a 2 MHz clock The outputs of U16 are passed on to the differential driver IC U21 The differential driver outputs from U21 are sent to the SC 770 where they are counted Discriminator adjustment 1s accomplished using a four channel serial input DAC U14 The DAC output is set by the SC 770 each time the system is powered up and whenever a new discriminator setting 1s entered mgwri t e il MEPE T amn m mr m mm us ST zs s SSN KOR m al E E Wi 1 Nn ge 255 ZI N i ba zd n Mr ten 2 e Hit nore el M s Wi es rn Res ET ET i GT 0 nfe Arg E Tu i ie cmd E ice id I E AD C uini a ELE TN a ic j l EE f I dm spen E Fa ki
11. 250 Vac line to the terminal block in the master pillar 90 250 Vac at 1 amp Hot to bottom of circuit breaker neutral to terminal 1 and ground to terminal 5 All wiring should be done in compliance with local electrical codes This document is the exclusive property of TSA Systems Ltd 10 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 2 5 PILLAR TO PILLAR INTERCONNECTIONS The TM 850 uses a 25 pin terminal block in each pillar figure 2B Master Slave Wire TB1 TB2 Color 1 1 jOceupany Green 2 2 JTampr Pink 3 3 scC JBrown Two Pin Jumper 4 4 Die Grey 5 5 cS0 JWhie 0 6 6 j Cout1 Orange 7 7 j Cout2 Yellow amp 8 8 Count3 Blue 9 9 j Cout4 Violet 11 11 Tamper White Pink 12 12 SC White Brown 14 14 CS0 White Black 15 15 Counti White Orange 16 16 Count2 White Yellow 17 17 Count3 White Blue 19 Empty Empty 21 Meme Empty 3 w S N MD n ool ddnde f 2 Battery Red amp White Red 23 Media Conv Red Figure 2B Once pillar interconnections are complete install the battery l Check that th
12. Ltd TM 850 Operations and Service Manual Doc 5022 Rev A RS232 to RS 485 Converter can be found on the top left corner of the electronics plate Remove the two screws holding the converter to the plate next remove the power wires connected to the converter by releasing the screws in the power connecter PMFX Box assembly can be removed by disconnecting all BNC amp MHV cables make sure to label where each cable is connected to ensure correct reinstallation Unscrew the four screws inside the enclosure holding it in place to access these screws take the four screws holding the lid in place out and remove the lid Reference Section 6 2 3 Media Converter can be removed by disconnecting all Ethernet and fiber optic cables disconnect the 12 volt power supply and removing the two screws holding the mounting plate to the electronics plate NOTE Never hold or move the gamma detector by the neck or photo multiplier tube as it may damage the assembly Gamma Detector Assemblies can be removed by disconnecting the BNC and MHV cables removing the bracket and releasing the two zip ties securing the detectors in place Reference Section 6 3 Handle the detectors with EXTREME care to avoid damage To reinstall a detector reverse the previous steps The SC 770 and SCA 775 are mounted in the middle portion of their respective pillars electronics plates Four Phillips screws hold each module onto the electronics plate To remove the module
13. SIGNAL TO BACKGROUND RATIO The following formula is helpful in determining the optimum discriminator settings Always perform a variance test at the final setting of the lower level discriminator to ensure that system noise is not being introduced into the amplifier stage 28 ui Where Q Quality factor S Net signal count with source background B Background count Higher values of Q result in better sensitivity This document is the exclusive property of TSA Systems Ltd 86 Unauthorized use or distribution ts strictly prohibited 5ystems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A VARIANCE The variance analyzer mode is used to check whether the counts seen by the controller are actually from the proper distribution If the distribution approaches normal the resulting number will approach 0 Any significant deviation from the normal distribution will result in a larger number The two most common problems resulting in variance failure are light leaks in the detectors and periodic noise in the electronics Periodic noise will result in a number of about 1 a light leak will usually result in a number larger than 2 The number displayed during a variance test 1s the absolute value of the average of a number of these tests with one test being performed every nn seconds The data 1s valid after three iterations of nn seconds The pass fail criterion varies from unit to unit and 1s included in the varianc
14. Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 3 2 PASSWORD CONTROL The zero 0 key on the keypad is used to enter the set up mode from the operating screen Before the menus can be accessed the password must be input followed by the pound lt gt key If the password 1s not entered correctly the system will return to the operating screen NOTE The password is set to 1234 and can not be changed 3 3 PROGRAMMING THE SYSTEM CAUTION Once the password is entered and programming mode is enabled all alarm functions are disabled DO NOT leave the system in programming mode for normal operation CAUTION Always verify the alignment of the system before attempting to program it reference Section 7 2 2 All of the system parameters are controlled from the SC 770 controller located in the master pillar In order to access the SC 770 the electronics cabinet door must be opened using the keys supplied with the system The door may stick a little due to the weather seal bonding to the door face The SC 770 has a twelve key keypad on the face of the controller Using this keypad the operator can perform system set up and diagnostic tests After the system has been powered up and acquired its initial background the set up menu can be accessed The system parameters and diagnostic functions are protected by password access This section outlines
15. and the formulas used Press the pound lt gt key to terminate the variance test NOTE The variance for a detector that is disabled or disconnected will be 99 000 This document is the exclusive property of TSA Systems Ltd 23 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A NOTE For a successful variance test to run all movement in the immediate vicinity of the pillars must be ceased throughout the duration of the test A vehicle person or object moving through behind or around the pillars could cause a detector or detectors to fail the variance test The shielding due to an object s attenuation may change the count rate sufficiently to cause a test failure SET CLOCK Sets the system time and date The operator will be prompted to enter the hours in 24 hour format minutes month date and year last two digits only from the keypad When the pound lt gt key is pressed after the last entry the data is written to the internal clock calendar RELAY OUTPUT Determines functionality of output relay and local alarms Entering 1 OFF disables local audio and visual alarms and fault indicator after power up Entering 2 ON enables local audio and visual alarms and fault indicator after power up Entering 3 AUTO local audio and visual alarms are disabled unless the Ethernet connection is lost then the system
16. fail the SC 770 will display a FAIL message The system cannot be put into service until the problem is corrected ETHERNET LINK Test for Ethernet link After completing the POST the system will enter the BACKGROUND mode and be ready to operate after the initial 20 second background is obtained 5 3 2 Background Mode BACKGROUND mode is the default mode for routine operation The system will automatically go to this mode after the initial self test series The display counts down to 0 during the first background collection period During this initial countdown no other functions are available and OCCUPANCIES and TAMPER conditions are ignored The unit then continuously takes 5 second background counts and adds the most recent set together to display the current average background count After the initial countdown system status 1s displayed and the system starts monitoring for occupancy The gamma and neutron background on the display will update every five seconds to show the current background being used for alarm calculations While collecting background counts the SC 770 compares the latest count with the HI LO LEVEL background alarm settings once a second If the background counts are outside these limits the unit will display DET X LO HI NNNNN where X is the detector number and NNNNN is the current background for that detector It will also illuminate the amber fault light on the master pillar and the appropriate alarm lamp on
17. hold in after the occupancy signal indicates the system is vacant This feature ensures that the rear of the departing vehicle is scanned and prevents it from affecting the background The factory setting is 10 intervals two seconds for Vehicle and Train monitors but the optimum setting may vary with local conditions NOTE This setting is also used for neutron This document is the exclusive property of TSA Systems Ltd 18 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A NSIGMA Sets N sigma the radiation alarm level Where N is the number entered and sigma is the standard deviation of the last average background measurement in cps The n sigma value filed is a three digit field and must be entered as such A leading zero must be entered if the n sigma value is less than 10 0 a 4 n sigma value must be entered as 04 0 The decimal will automatically be placed This formula determines the number of counts above background that will trigger a radiation alarm Sigma STD dev of Bkgaye VBk Zave If BkZavg 400 cps Alarm Threshold Bkgaye N sigma Sigma V400 20 So if your alarm set point is 4 sigma Thresh 400 4 20 480 The monitor will alarm at 480 cps Four sigma will include 90 of all counts on a Gaussian distribution and will result in a measured false alarm rate of approximately 1 1200 and a theoretical false alarm r
18. is the one with the BNC connectors and the high voltage cable is the one with the MHV connectors which are the larger of the two BNC Connector MHV Connector Figure 8A Figure 8B 1 Using a DVM with a high voltage probe verify the high voltage at the MHV connectors on the SCA 775 2 Disconnect the MHV connectors from each detector and measure the high voltage from the center conductor to ground The voltage should be between 600 and 1 500Vdc and stable within 5 Vdc 3 Record the voltage and test range stability of the HHV 448 board 4 Adjust R1 on the HHV 448 board to at least 50 volts above and 50 volts below the recorded voltage to ensure that the high voltage is operating properly If this voltage is out of spec and or will not adjust over this range replace the defective HHV 448 board before continuing with this procedure Otherwise adjust R1 to its initial value 5 Verify the signal outputs from the detectors using an oscilloscope 6 Set the oscilloscope to 500mv division vertical gain and the time base to 50 0us division and trigger to negative slope Use the existing BNC cable from the detector and connect This document is the exclusive property of TSA Systems Ltd Sl Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A it to the oscilloscope probe input as seen in figure 6D If necessary the BNC cable from the
19. removal Figure 6L Figure 6M This document ts the exclusive property of TSA Systems Ltd 54 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 6 4 THE NEUTRON DETECTOR ASSEMBLY The neutron detector assembly consists of two He detectors mounted in a high density polyethylene chamber figures 6N and 6P Figure 6N Figure 6P This document is the exclusive property of TSA Systems Ltd 55 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 6 2 3 PMFX Box The high voltage signal pick off box sums two neutron tubes per output figures 6Q and 6R There are no serviceable parts inside the PMFX Box Voltage X ET I E E E f 3 1 E l CD m9 UM we um X EE i I r in Figure 6Q Detectors Figure 6R This document is the exclusive property of TSA Systems Ltd 56 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 6 3 THE BATTERY MODULE The Battery consists of a 26 amp hr 12 volt sealed lead acid battery and a constant voltage charger figure 6S 6 4 NANO CONTROLLER Figure 6S This is a micro controller used in the TM 850 to sense velocity and occupancy figure 6T It converts the travel time between two photo beam sensor
20. systems GAMMA OVERVIEW covers the gamma operation only Refer to NEUTRON OVERVIEW for details on how the neutron algorithm works 9 1 GAMMA OVERVIEW The system makes its decisions for radiation alarms in the following manner A level for the desired alarm threshold n sigma 1s selected by the operator using the keypad Whenever an occupancy is sensed the monitor enters FAST COUNT mode and begins making alarm comparisons based on the parameters that have been stored in the controller s FLASH memory When unoccupied the system constantly updates the background count to reflect changes in the environment The background is updated in 5 second increments with the current background reading equal to the one second average of the background time This updates the background completely every selected background time 20 120 seconds When the unit 1s occupied it 1gnores the current 5 second background interval and goes into FAST COUNT mode The monitor collects its counts in 200 millisecond intervals For example if the number of intervals is set to 5 the alarm comparison will be based on 1 0 second rolling sum data sets 5 x 200 mSec This sum of counts is then compared to an alarm level which is normalized to that number of intervals The number of intervals should be selected based on an average monitoring time The normal speed for vehicles passing through the monitor is 5 mph 8 kph The summed counts of the chosen number of inter
21. the menus and provides a detailed description of the functions Pressing the number associated with the desired operation permits the operator to access that function Pressing the zero key will display the next page of the current menu where appropriate Pressing the pound lt gt key will return the operator to the previous menu or exit the menu mode This document is the exclusive property of TSA Systems Ltd 14 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A When a parameter display contains a NEW prompt below it a new value for that parameter may be entered from the keypad Pressing the asterisk lt gt key clears the current operator entry pressing the pound lt gt key accepts the current value or the new value that has been entered by the operator It s always a good idea to go back and check to make sure that all entries are valid after making changes The first menu presented to the operator offers three choices Those choices are Selecting the desired menu choice will present the operator with another menu allowing the operator to access the appropriate parameters and or functions GAMMA NEUTRON COMM SET This document ts the exclusive property of TSA Systems Ltd 15 Unauthorized use or distribution ts strictly pro
22. the systems operate This 1s a general list but most systems use some of these formulas ACTIVITY FROM COUNTS ctivity 7 37 Where Activity Activity in nCi Eff Decimal efficiency i e 10 0 10 N Net counts per second cps background cps 37 bq per nCi EFFICIENCY E p o 37 activity Where N cps with source background cps activity test source activity in nCi N Sigma Alarm Level Used to calculate the alarm level on instruments using n sigma alarm algorithm Most systems that use n sigma alarm levels operate in counts second Alarm Level N bkg bkg Where bkg Background counts Sigma Ibkg N N Sigma value This document ts the exclusive property of TSA Systems Ltd 85 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A RELIABLE DETECTABLE ACTIVITY RDA FORMULA This formula calculates the minimum activity in disintegrations per minute that can be reliably detected under a given set of operational conditions 2 p CON CON 4 FAM BKG BKG 2 F BKG G CT 2200 RDA 2200 G 379 E Where BKG total background counts per count time CON confidence sigma CT count time in seconds E Decimal efficiency 1 e 10 0 10 F false alarm level in cps FA false alarm sigma G intermediate variance RDA reliable detectable activity in DPM
23. used in a local area network and should be set to zero This document ts the exclusive property of TSA Systems Ltd 34 Unauthorized use or distribution ts strictly prohibited ra A Systems Ltd Ini U TM 850 Operations and Service Manual Doc 5022 Rev A 3 4 OPERATIONAL TEST INSTALLATION CHECKLIST Operational Test Form Monitor Location Monitor Spacing Monitor SN SC 770 SN SCA 775 Master SN SCA 775 Slave SN GAMMA PARAMETER SETTINGS FIRMWARE VERSION SYSTEM I D Low Alarm High Alarm Intervals Occ Hold In N Sigma Det Online LLD Master LLD Slave Relay Output WOn Oof Auto ULD Master ULD Slave Algorithm LISum LlHorz Vert LlSingle GAIN SETTINGS Mstr ist Stage 2nd Stage Slv ist Stage 2nd Stage HIGH VOLTAGE Master Vdc Slave Vdc BACKGROUND CPS Det 1 Det 2 Avg Total Det 3 Det 4 Isotope Used Original Activity Mfg on Date Current Activity NEUTRON PARAMETER SETTINGS High Alarm Max Intervals Alpha Value ZMax Sequence Test LLD Master ULD Master LLD Slave ULD Slave HIGH VOLTAGE Master Vdc Slave Vdc BACKGROUND CPS Det 1 Det 2 Avg Total Det 3 Det 4 Isotope Used Original Activity Mfg on Date Current Activity COMM SET PARAMETER SETTINGS IP SUBNET DNS GATEWAY GENERAL CHECK GENERAL CONTINUED GAMMA NEUTRON O ac Wiring Correct L Test RS 232 Output O Pillar to Pillar Connections O Test Media Convert Output O Check NVRAM Batte
24. will automatically revert to ON This document is the exclusive property of TSA Systems Ltd 24 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 3 3 3 ADVANCED GAMMA ALGORITHM BKG TIME SHOW VERSION CLEAR G CNTS F ALARM TEST BKG NSIGMA SYSTEM I D PROFILING 90 19 t B I ALGORITHM Permits the operator to select various configurations of gamma detectors to be included in the alarm comparisons This allows the operator to optimize the system operation for local conditions When this mode is selected the selections will be presented on the display one at a time Pressing any key except the will toggle the calculation on and off To accept the current setting press the key to step to the next selection The available selections are SUM Performs an alarm comparison on the sum of all detectors in the system usually four this results in 1 alarm comparison per occupied interval HORIZontal Performs an alarm comparison on the sum of the two top detectors and the sum of the two bottom detectors this results in 2 alarm comparisons per occupied interval VERTical Performs an alarm comparison on the sum of the upper and the lower detectors in each pillar this results in 2 alarm comparisons per occupied interval SINGLE Performs alarm comparisons on each detector individually this results in either 2
25. 0 250 Vac 47 63 Hz site power supply This document is the exclusive property of TSA Systems Ltd 9 Unauthorized use or distribution is strictly prohibited Ini mT A Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 2 3 DETECTOR CABINET INSTALLATION The monitor is shipped completely assembled for ease of handling and to minimize shipping damage The physical installation of the pillars external wiring and communications equipment will be performed by a contractor and or TSA personnel Place the two pillars upright facing each other at the required spacing at the desired location The TM 850 should be securely anchored to a cement slab In extremely windy locations guy wires may be required 2 4 ELECTRICAL INSTALLATION NOTE AC power signals and alarm outputs are run through a user supplied conduit This conduit must be watertight if the system is to be installed outdoors The conduits are typically installed under the roadbed Once the pillars are in place the unit must be wired for ac power AC power alarms and communication outputs for remote monitoring if desired are brought into each pillar through user supplied conduits These conduits may be brought into the pillar at any convenient location normally near the bottom of the pillar but should not be placed in such a way as to interfere with the opening of the door Main Circuit BreaKer Figure 2A Connect the 90
26. 0 Vdc refeito ooh TP34 3 3 volt Reference 0 3 volts Pe cere 3 3 2 to adjust values Do not proceed with the alignment until these voltages are within tolerance Alignment The HHV 448 Refer to Drawings 15 and 22 Component Designator The High Voltage is adjusted using R1 on the HHV 448 board Use the high voltage probe to verify that the high voltage is 1 375V dc 410Vdc and is stable 5Vdc Verify and adjust by disconnecting the MHV high voltage supply cable from the PMFX box see Section 6 2 3 and measuring at the center pin with the probe ground on the outside of the connector DVM should read 1 375 Vde 1375Vdc Aligning The SCA 774 See Drawing 20 Component Designator Adjust R19 and R20 to maximum CW SCA 775 Slave Pillar Repeat steps 7 2 1 3 through 7 2 1 4 on the slave pillar This completes the neutron alignment This document is the exclusive property of TSA Systems Ltd 75 Unauthorized use or distribution is strictly prohibited In mm e Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 7 3 2 Neutron Detector Tune up Procedure Increase the LLD until you see a decrease in count rate due to the decrease in the number of the detected Cf 252 Heutrans li l i E Counts E i Proton and Triton Recoil Region l h bam ma I Sensitivity d l Region HE 0 504 5 040 Discriminator Set Point Vdc Decrease the LLD until you see an Increase in count rate due
27. 3 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A NOTE Most of this data should have been collected on the form provided in Section 3 4 7 3 NEUTRON MAINTENANCE Once initial installation has been completed little maintenance 1s required Periodic inspection is recommended to insure proper functioning This should include but is not limited to the following visual inspection for loose wires field alignment checking the settings of the control module perform drive through tests A Performance Verification Checklist is included at the end of this section It is recommended that a copy of this be filled out whenever the system is put into service after tuning and alignment 7 3 1 Electronic Alignment Procedure um B HIGH VOLTAGE d Since the alignment procedure requires specialized tools and knowledge only qualified technical personnel should work on these instruments Tools and Equipment The following tools are needed for this procedure DVM with a resolution of 0 1 millivolts 0001 volts High voltage probe with a range of 10 000 Vdc and Zin 2100 MQ SCA 775 Master Pillar NOTE Be careful not to force the lid open and break the hinge All of the alignment adjustments are located in the SCA 775 enclosure To gain access for the alignment unlock the latch on the electronics cabinet door and swing the door open L
28. E a 54 LALE Uu cd IG U PGs eee renee eer TEE ee AON O POT EON Tr 85 11 0 APPENDIX B Data String Outputs amp Definitions e eee eee 6 This document is the exclusive property of TSA Systems Ltd Unauthorized use or distribution is strictly prohibited SA im Y Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 12 1 SPARE PARTS ORDERING INFORMATION ee ennt 93 Eh RDLDUDNIMBNDEIDESEARE TAB DB a iia stented bocas UND Ai ere Dec DEL Rab 93 IRRIBEAVILZUEUI RI VG cna 94 This document is the exclusive property of TSA Systems Ltd Unauthorized use or distribution is strictly prohibited 1 0INTRODUCTION 1 1 SCOPE AND PURPOSE OF MANUAL This manual is designed to enable operating and service personnel to properly install test operate and care for the TSA Train monitor Since applications are necessarily site specific operation procedures are given in general terms Service and repair are covered to the subassembly level Anything more complex than this requires that the instrument or assembly be returned to TSA 1 2 GENERAL DESCRIPTION TSA s Systems are highly reliable systems for the radiometric detection of special nuclear material SNM The Train Monitor Model TM 850 is designed for outdoor installation When the system is not occupied the system will automatically monitor background radiation and periodically update a display on the controller When the system is
29. Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 7 OMAINTENANCE It is recommended that scheduled maintenance be completed on regular intervals Cleaning can be completed using water and a mild detergent along with a brush or wash cloth WARNING Do not use high pressure sprayers as they may force water into the enclosure which may cause the system to malfunction and or damage the perimeter door seals 7 1 PERIODIC INSPECTION amp GENERAL MAINTENANCE Periodic inspection and general maintenance is recommended to insure proper operation This should include but 1s not limited to the following remove rust and flaking paint amp repaint clean face of sensor s replace or recharge desiccant as needed check battery lubricate key holes check cabinet alignment lubricate hinges wash outside of enclosure 7 2 GAMMA MAINTENANCE Once initial installation has been completed little maintenance is required 7 2 1 Periodic Inspection Periodic inspection is recommended to insure proper functioning This should include but is not limited to the following visual inspection for loose wires etc run a variance test check electronic alignment perform drive through tests A Performance Verification Checklist is included at the end of this section It 1s recommended that a copy of this be filled out whenever the system is put into service after tuning and alignment This document ts the exclus
30. Neutron 1 High neutron fault alarm Maximum Intervals Alpha value Zmax value Sequential intervals Background High fault alarm units are in counts per second per neutron detector block Maximum Intervals used in the SPRT algorithm Alpha false alarm probability used 1n SPRT Zmax the value used for an alarm when max intervals 1s reached Sequential Intervals in the amount of 200 millisecond intervals that must be above background a filter used to stop cosmic nuisance alarms P s place holders Output SN2 0 504 5 040 0 504 5 040 PP CRLF Definition S etup Neutron 2 Master Lower Level Discriminator Master Upper Level Discriminator Slave Lower Level Discriminator Slave Upper Level Discriminator Master lower and upper level discriminator voltages LLD s amp ULD s Slave lower and upper level discriminator voltages LLD s amp ULD s Ethernet Input Only The following message is accepted to set the time and date on the SC 770 controller It uses UDP messaging on port 1600 INPUT 01 02 03 04 05 06 07 CRLF Definition 01 Attention character Time Date update message HH MM SS MM DD Y Y 22 bytes 01 02 03 04 05 06 0 7n translates into message type 1 for a Date Time message with a time of 2 03 04 and a date of 5 6 7 This document is the exclusive property of TSA Systems Ltd 92 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Re
31. One of the HHV 448 boards provides high voltage to the gamma detectors the other provides high voltage to the neutron tubes This document is the exclusive property of TSA Systems Ltd 66 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 2 2 l I a Low Voltage Checks This step verifies that the low voltage circuitry 1s operating properly before performing the actual alignment Using the DVM verify that the following dc voltages are present before performing an alignment All readings are referenced to ground there are numerous ground test points on the board Always connect the ground lead first TP14 17 are convenient grounds use a micro clip lead and leave it connected while performing all low voltage checks figure 7A Test Point Voltage Description TP31 12 6 volts or gt Switched battery TP33 5 0 2 volts VCC TP9 3 to 5 volts negative voltage TP30 5 0 005 volts discriminator reference voltage xb n d TP10 Gamma LLD setting 0 012 volts normally 0 069 Vdc ee Sehon TP18 Gamma ULD setting 0 012 volts normally 0 455 Vdc 3 3 2 to adjust TP34 3 3 volt Reference 0 3 volts values Do not proceed with the alignment until these voltages are within tolerance Figure 7A TP14 17 can be Use press on clip used as a ground for lead adapters to all electronic make the job alignment steps
32. Output NS xxxxx xxxxx XXXXX XXXXX CRLF Definition Neutron Scan Neutron counts are sent every second while occupied and not in an alarm state The counts are one second from five 200mSec count buffer Output NA Xxxxx xxxxx xxxxx xxxxx CRLF Definition Neutron Alarm Neutron counts are sent every second while occupied and in an alarm state The counts are one second from five 200mSec count buffer Output TT 000000 000000 000000 000000 CRLF Definition Tamper Fault Tamper or power fail condition This is sent only once when the following conditions occur ac power loss charger output failure or when any of the doors in the tamper circuit are opened Fields are padded for 32 bytes Output TC 111111 111111 111111 111111 CRLF Definition Tamper Cleared Tamper or power fail condition cleared This 1s sent only once when the following conditions occur ac power returned or when the doors are closed on the pillar Fields are padded for 32 bytes This document is the exclusive property of TSA Systems Ltd 89 Unauthorized use or distribution ts strictly prohibited 5ystems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A Output GX xxxxxx 000000 000000 000000 CRLF Definition Occupancy Cleared Pillar occupancies since midnight of each day xxxxxx 1 99 999 occupancies This message is sent with an incremented count every time the pillar clears the occupancy This variable is automatically cleared after
33. Profiling must be turned on for monitoring continuous state of health messages via Ethernet or serial communications in Hyper Terminal 4 1 INSTALLING THE SOFTWARE To install the SC 770 com program go to www tsasystems com and select the Archives pull down menu at the top of the screen next select Software this should bring up a list of downloadable software options Click on SC 770ComSetUp which 1s under the Communications Software heading Save the file to the desired location on the hard drive After the file has been saved go to the location of the saved file and click on the SC 770 setup file The program will walk you through the rest of the installation 4 2 PORT Selects the port that is to be used to communicate with the TM system figure 4A The value is immediately changed and stored in the configuration file If the selected port is not available a warning message will be displayed When the correct COM port is selected the RSA receive box will flash green every 5 seconds if in the Gamma or Neutron Show Count tab indicating the COM program is receiving data from the SC 770 controller Setup COM PORT and Unit ID Port 3amma Parameter Gamma Alarm Data Gamma Show 4 ai Set Communications Port DEDMI C COMe2 f COM t COM4 Gamma eutran Unit Number 1 Figure 4A This document is the exclusive property of TSA Systems Ltd 36 Unauthorized use or distribution ts strictly prohibited i In
34. Train Monitor 1M 850 Operations amp Service Manual Systems Ltd Nuclear Radiation Measurement Solutions Doc 5022 Rev A April 2007 Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A STANDARD WARRANTY FOR TSA SYSTEMS INSTRUMENTS TSA Systems Ltd warrants this instrument to be free from defects in workmanship and materials for a period of twelve months from the date of shipment provided that the equipment has been used in a proper manner and not subjected to abuse At TSA s option repairs or replacements will be made on in warranty instruments without charge at the TSA factory Warranty of sub systems made by other manufacturers will be extended to TSA customers only to the extent of the manufacturer s liability to TSA TSA reserves the right to modify the design of its product without incurring responsibility for modification of previously manufactured units since installation conditions are beyond the company s control TSA does not assume any risks or liabilities associated with methods of installation or with installation results Every effort is made to keep the manuals up to date and accurate However because TSA Systems is constantly improving and upgrading the product line TSA can make no guarantee as to the content of current manuals No obligations are assumed for notice of change or future manufacture of these instruments Manufactured by TSA Systems Ltd 14000 Mead Street L
35. View History Record ex 4j iY sio U B Q U zx an 4 1 1 1 TESS 378 dtd deo 446 Ao Y Em 16793 376 3399 460 ili gi 5 452 43 c 0 0 0 474 451 oofo 7oo c 0 O 468 523 a4 ba T 3s4 483 523 11695 9331 1558 463 523 15212 12200 2014 476 522 16773 13444 2345 A Sid 16240 1047 4836 477 S20 5835 7228 T660 4B1 523 16332 5311 10008 431 522 m 16240 5433 S732 492 523 16403 8142 7254 458 522 14375 8695 4473 48 510 Figure 4S hR AARM ARKA YARAT RAAR AX qR X NSIlSl l llqlqQRqlAR gqnAAaGAAZZSR AXLDCs ESHBDLLLBLULLOL ZILRLBbGINGAOL SXIEAAMMLLLDLOLLGLLLIDPLULGLLLOCELEEOHEQGIILLOXEAkRroi h This document is the exclusive property of TSA Systems Ltd 40 Unauthorized use or distribution is strictly prohibited Ini t Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 4 4 2 Extra The Extra tab figure 4T allows the user to access additional information The About SC 770 Com button displays the version information of the program figure 4V The View Saved History File button opens a file viewer window figure 4U The files may also be viewed using Notepad or any other text editor Extra Functions About 8LC 7 7l Com View Saved History File E View History Record 12 11 2011 0 2 Power Up 0 12 71 2011 0 245 Power Up O DO dU T 137 1172011 1 4 58 N Avg Bkg X 1 2 121 2011 1 4 58 G AvgB
36. a power cycle and or at midnight every night Fields are padded for 32 bytes Output SP 0 1234 04 234 006 23 000000 CRLF Definition Speed Sense The first field is the time the object takes to travel 12 inches the second field is MPH 99 999 max and the third field 1s KPH 999 99 max Fields are padded for 32 bytes NOTE Ethernet and Serial Port data will not be sent if the profiling parameter is turned OFF This document is the exclusive property of TSA Systems Ltd 90 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A Ethernet Output Only The following messages are sent on power up if there 1s an Ethernet link established The messages are also sent when the Pmode program mode is exited back to a normal operating screen and at midnight of the SC 770 internal clock These messages are sent so that the user can see the current settings of the monitor SG1 002000 000068 05 10 07 0 P SG2 1100 0 069 0 455 01 1010 P SG3 0 069 0 455 20 0 00 1 08 8 SN1 000050 02 0047 1200 04 PPP SN2 0 504 5 040 0 504 5 040 PP Output SG1 002000 000068 05 10 07 0 P CRLF Definition Setup G amma 1 Background High Fault Alarm Background Low Fault Alarm Intervals Occupancy Holdin Nsigma Background High and Low fault alarms units are in counts per second per detector Intervals and Occupancy Holdin units are 200 millisecond int
37. a remote alarm console if one 1s included in the system This document is the exclusive property of TSA Systems Ltd 47 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 5 3 3 Fast Count Mode While this mode does not take counts any faster it does update the display more often every second instead of every five seconds and begins testing for alarm conditions every 200 milliseconds The controller also anticipates an occupancy by storing the number of 200 millisecond intervals in NVRAM The system may be forced into the fast count mode by pressing the asterisk lt gt key on the keypad e Pressing the pound lt gt key returns the system to background mode e Closing all the doors will clear a tamper condition giving the system a state change and will also return the system to background mode Upon entering the fast count mode the unit waits for the current interval to go to completion 200 milliseconds maximum discards the oldest interval adds the latest one tests for alarm conditions and begins another 200 millisecond collection interval This cycle continues during manual FAST COUNT or during an occupancy and the occupancy hold in period which starts when the unit drops out of occupancy If an alarm condition occurs the system will hold the alarm on for 7 seconds The radiation alarm level is calculated on the basis
38. ac terminal block with a DVM VOM or other ac tester If 90 250 Vac is not present the site power must be checked and restored Do not go on to the next step until the 90 250 Vac is present at the ac terminal block Next check the cartridge fuse in the LD 260 Check the fuse if ac 1s present but dc 1s absent when the LD 260 is turned on The battery charger and heaters are the only assemblies that use the 90 250 Vac directly To test the battery charger remove the 3 pin connector from the load disconnect and measure the voltage on pins 1 and 3 of the connector pin 1 is and pin 3 is ground The voltage should be approximately 13 6 Vdc If the voltage is low or not present the battery charger must be replaced or adjusted reference figures 6X To check the 12 volt power system check the battery voltage with the connector at LD 260 J4 disconnected the battery voltage should be at least 12 5 Vdc Reconnect J4 and check that the switch on the load disconnect 1s in the ON position and the green LED is on If the battery voltage is low less than 12 5 Vdc and the charger 1s working try to recharge the battery Ifthe battery will not charge it must be replaced The load disconnect will not turn on if there is a short in the system a blown fuse or a defective LD 260 To test for this condition remove LD 260 J2 If the green LED comes on there is a short in the system See Drawing 26 for more details All low voltage power 12 Vd
39. ackground counts and increase system sensitivity to certain isotopes Low Background Fault The condition that occurs if the counts fall below the programmed low background level This condition prevents further operation until the problem is corrected Usually set in cps POST Power On Self Test Rolling Background This is the background accumulation method used in most of TSA s instruments Background accumulation is done in ten separate buffers each buffer representing 1 10 of the total background time As each buffer is filled the background is updated This results in a background update at background time 10 Initial background accumulation requires the full background time Standard Background Standard background requires the full background time for the initial background and updates ULD The Upper Level Discriminator provides an adjustable threshold that determines the highest signal level that will be accepted as a nuclear pulse by the system s electronics Some systems do not have an ULD Also see LLD This document is the exclusive property of TSA Systems Ltd 84 Unauthorized use or distribution ts strictly prohibited ium V Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 10 0APPENDIX A The following formulas are used in various systems manufactured by TSA Systems Ltd They are provided to assist in verifying system operation and to give our customers a better understanding of how
40. ate of approx 1 33000 Six sigma will give you 1 10 theoretical false alarm rate This document is the exclusive property of TSA Systems Ltd 19 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A DET ONLINE Indicates the detectors in the system which are enabled The SC 770 will support up to eight detector inputs If less than four detectors are installed in a system the unused inputs must be disabled to allow proper system operation The DET ONLINE will normally display 1234 To disable an individual detector type a zero in its position For example typing 1034 would disable detector number 2 the detectors on line would display 1 34 To enable all four detector inputs the normal setting for a system enter 1234 the detectors on line will display 1234 To enable a Master only system the detector setup should be 12 TM 850 Detector Arrangement 3 3 2 GAMMA FUNCTIONS SHOW COUNT Displays detector counts DSCR ADJUST Discriminator adjustment VARIANCE Performs a variance test on the detectors SET CLOCK Sets system time and date RELAY OUTPUT Determines functionality of output relay amp local alarms Un B WD NO Re This document is the exclusive property of TSA Systems Ltd 20 Unauthorized use or distribution ts strictly prohibited Ili y m Emy Systems Ltd TM 850 Operatio
41. atic D 1380465 9 59 5202 0 22 3691 3 999 02 990 2 89 0 0 860020 9 02 45 salsa 22 HETV 448 Component Designat ie etr eed t ide a bec ba ade ba vd dad au bes 23 PMFX 4 Quad Signal Pickoff Board Schematic Diagram eeessssessssssssessse 24 PMFX 4 Quad Signal Pickoff Board Component Designator eeeeeeeeesssss 25 LD 260 Schematic Diagram amp Component Designator cccccccccccccceccceeessssseseseeeseeeeeeeeeees 26 Voltage Divider Schematic Diagram VD 580 ssssssssssssssseeeeeeeeee eene 27 Typical Pulse Profile 2c tbe obe n aue beta eite tu igen tmonnaunes Po OE o eneen hee 28 This document is the exclusive property of TSA Systems Ltd 94 Unauthorized use or distribution is strictly prohibited
42. bly cause a false alarm e If a vehicle parks between the pillars holding occupancy this will significantly increase the possibility of a false alarm This document is the exclusive property of TSA Systems Ltd 62 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A To set the distance complete the following steps Step 1 Press and hold appropriate Teach button until it s Teach LED turns Red Step 2 Adjust target to the 1 limit point Press Teach button Teach flashes Step 3 Adjust target to the 2 limit point Press Teach button Teach turns off Step 4 Repeat steps 1 3 for other output if necessary European wiring standards for dc are Vdc brown wire GND blue wire 6 8 2 IR Photo Beam Speed Sense Current IR photo beams are an IR Break Beam figures 6Z 6AA and 6AB They have an emitter in the slave pillar and receiver in master pillar which signals occupancy when the beam between the emitter and receiver is broken When only one beam is employed the sensor works solely as an occupancy sensor Current applications employ two sensors in a system which makes object speed indication available Two photo beam assemblies are mounted parallel to each other approximately 12 apart Each assembly utilizes different frequencies within the IR range to prevent cross talk One sensor set is color coded black and t
43. by the rabbit The Rabbit Board is responsible for sending data string messages through the RS 232 and RJ 485 ports figure 6C It also sends the signals for lights and alarms to turn on or off This includes the power up sequence lights and alarms The rabbit board is secured to the SC 771 board by a single screw in the middle of the board This screw must be removed to remove the board from the SC 771 board To avoid bending the pins on the two 34 pin connectors on the bottom side rock the board back and forth while pulling it gently away from the SC 771 tme id VEU T ECRTEN e fe TRITTTTTE PITE LH LE ee PEELE Le 1 a Figure 6C 6 1 3 The GPRB 756 The General Purpose Relay Board GPRB 756 figures 6D and 6E accepts the system status signals from the SC 771 and switches the appropriate relay contacts The second set of relay outputs are not used by the system but may be used by an AM 270 or interfaced to the customer s security systems NOTE f the RELAY OUTPUT is turned OFF under the GAMMA PARAMETERS menu option the local lights and audible alarms as well as these relay contacts will be disabled This document is the exclusive property of TSA Systems Ltd 50 Unauthorized use or distribution is strictly prohibited TM 850 Operations and Service Manual Doc 45022 Rev A il E J X9 c 1 N iF Yu TRE J lt ne ee Figure 6D Figure 6E 6 2 THE SCA One SCA 775
44. c for the pillar is controlled by the load disconnect The solid state relay in the LD 260 switches the battery voltage to the system When the LD 260 is turned on it energizes the coil of the solid state relay This closes the relay and supplies battery voltage to TS2 through a 5 amp cartridge fuse From there it is distributed to the system electronics By checking for the presence of 12 Vdc at the various points it is possible to eliminate the power cabling and connections as the source of problems If a point does not have the proper voltage then the cables between that point and the LD 260 should be checked for open conditions and replaced if faulty In this step the wires to the IR detectors and lights are tested This document is the exclusive property of TSA Systems Ltd 80 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 8 3 INDIVIDUAL ASSEMBLIES This section deals with the individual assemblies and how to repair them As stated at the start of this section the steps only go to board level 8 3 1 Gamma Detector Assemblies Each gamma detector assembly is held in place with two releasable zip ties and a bracket To remove a detector disconnect the BCN and MHV connectors shown below remove the bracket by backing out the two screws holding it in place release the two zip ties and carefully remove the detector NOTE The signal cable
45. contains a Single Channel Analyzer Model SCA 775 two occupancy emitters and an ultrasonic sensor The pillars use lead shielding on the rear and sides of the gamma detectors to reduce the background radiation and increase the ability of the system to detect SNM passing through the system User supplied conduits for the TM 850 are required for power and signal cables between pillars and communication to external equipment If the system is equipped with heaters ac power must be supplied to the heaters in both pillars The ac power and interface signals may be run in the same conduit unless this is prohibited by local code 1 7a Lz LES Ls ea ee Boa ee pe pr cr a ie re AE P a I E CES x a zt rg 2 rU teat I ets Sa npe zr n ys je A ix E M ee Y IR i PI Li k gt Poa B T pucr T d D A iy Jur iit Ste eae ra EAT TM 850 in a railroad monitoring application the electronics box on the back can also be mounted on the bottom This document is the exclusive property of TSA Systems Ltd 6 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 1 3 SPECIFICATIONS Gamma Detectors Two 12 w x 48 l x 1 5 d 30 x 120 x 3 8 cm organic plastic scintillators in each pillar Neutron Detectors TM 850 eight 2 x 36 1 5 x 91 cm 2ATM He detectors in each pillar sensitivity Please contact TSA for details Power 12 volt 26 amp hou
46. d background 1 20 second rolling average Bkg estimation in cps 2 20 second rolling average Bkg estimation rd z 9 A 3 20 second rolling average Bkg When the monitor is occupied the system will Used for ignore the current 5 second background interval N Siama and calculate the alarm threshold based on the Ce cen previous completed interval Gamma Occupancy 200 mSec interval P Occupancy sensed l SS 1 one second rolling sum alarm comparison look back tv 27 one second rolling sum alarm comparison l Y 3 one second rolling sum alarm comparison This is displayed in cps if of intervals 5 The sum of these counts is compared to an alarm level which is normalized to that number of intervals This document is the exclusive property of TSA Systems Ltd 44 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 9 2 NEUTRON OVERVIEW The system makes its decisions for neutron radiation alarms in the following manner A level for Alpha is selected using the keypad Whenever the occupancy detector senses that a the monitor is occupied the monitor enters FAST COUNT mode and starts making alarm comparisons based on the parameters that have been stored in the controller s NVRAM When unoccupied the system constantly updates the background count to reflect changes in the env
47. data should have been collected on the form provided in Section 3 4 This document is the exclusive property of TSA Systems Ltd TT Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 8 0TROUBLESHOOTING This guide 1s designed so that on site personnel can service the system and effect necessary minor repairs It covers procedures and parts down to the board level Any other problems should be referred to factory authorized service personnel Unauthorized repair voids warranty When a problem occurs it is important to isolate the cause as much as possible This is accomplished by a step by step procedure which checks each of the assemblies for proper function and works upwards through the system Begin with a physical inspection of the unit and then check the power supply and cabling Examine the exterior of the cabinets for physical damage faulty wiring loose connections etc Open the cabinets and do the same inside checking all wiring carefully If the physical inspection shows no obvious cause for the problem proceed by checking the detectors controllers and other individual assemblies as outlined in the following steps After repairs have been made a field alignment must be performed See Section 7 for alignment procedures 8 1 COMPONENT ACCESS Before attempting to replace or remove any of the items listed below make sure that the system
48. detector may be extended using a BNC to BNC adaptor The oscilloscope should display negative going pulses ranging from 50 to 1200 milli volts in amplitude as seen in figure SC CHT S00mV CH2 1 00V Xm CHT J 20 0mV 483 153H2 Figure 8C Figure 8D After placing a 10uCi source of Cs on the detector the above display should appear figure 8D Repeat this test for any suspect detector NOTE Jf the pulses are not present for any detector check the trigger level and intensity on the scope If the pulses are not present substitute the voltage divider assembly with a known working assembly or replace the entire detector assembly The system must be electronically realigned after a detector or SCA component has been replaced 8 4 SC 770 CONTROLLER Physically inspect the unit for harness wiring or connector problems This procedure does not cover the replacement of wires or connectors Such replacement should only be done by qualified service personnel Questions concerning parts or wire type and availability may be addressed to TSA Engineering staff In the master pillar the SCA signals are fed into the SC 770 controller where they are processed If an alarm condition is found the SC 770 activates the lights and audible alarm The SC 770 receives occupancy input from either the IR or ultrasonic sensors If a problem is suspected in the SC 770 unit replace it with a known good assembly either from spare parts or from another un
49. disconnect the cables going to the unit release the four screws holding the lid closed open the lid then remove the four screws 1n the corners of the module To reinstall this module reverse the previous steps The IR Occupancy Sensors are mounted on the pillar doors To remove disconnect the cable connector from the back of the sensor and then remove the IR mounting nut s To reinstall the sensors reverse the previous steps The Ultrasonic Presence Sensor is mounted on the pillar door To remove disconnect the cable connector from the back of the sensor and then remove the four mounting screws Remove the sensor To reinstall the sensor reverse the previous steps The Lights and Audible Alarms are secured to the pillar doors by screws or a locking collar To remove disconnect the wires from Terminal Block TB2 and remove the screws To reinstall replace the light or audible alarm replace the screws and connect the wires to TS2 Be sure to use silicone caulking liberally to ensure water tight integrity of the pillar This document ts the exclusive property of TSA Systems Ltd 79 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 8 2 POWER DISTRIBUTION If the unit is totally inoperative verify that the unit is receiving power throughout the system Open the door of the master pillar electronics cabinet and measure the ac voltage at the
50. e Power switch on the LD 260 is in the OFF position 2 Using a Volt Meter check for a short between power and ground 3 Install the battery in the master pillar by connecting the battery cable to the in line connector from the LD 260 All of the other cables are factory installed This completes the internal wiring of the monitor With the main circuit breaker figure 2A switched to the ON position the yellow AC light on the LD 260 should be lit When the LD 260 power toggle is switched to the ON position both the yellow and the green LEDs will be illuminated and the system is energized eee This document is the exclusive property of TSA Systems Ltd 11 Unauthorized use or distribution is strictly prohibited Ini mms Y Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 2 6 START UP AND SELF TEST 1 Turn on the power switch located on the Load Disconnect LD 260 The unit will automatically perform a Power On Self Test POST which takes approximately seven seconds 2 The test results are displayed on the screen as they are run If any tests fail the system will be halted The problem must be corrected before operation can commence After all the tests are completed successfully the system will collect an initial BACKGROUND Mode The initial background acquisition takes twenty two seconds After the initial background has been gathered the system status will be displayed
51. e section of the manual on most units LUE N a Lic c N 1 i 2 C C Where C counts per sample time C mean counts I number of iterations N number of samples taken R sample variance modified to equal 0 rather than 1 for Gaussian distribution R mean variance this term is referred to as variance in TSA s manuals S2 sample variance This document ts the exclusive property of TSA Systems Ltd 87 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 11 0APPENDIX B Data String Outputs amp Definitions Version SC 770 1 08 8 RS 232 and Ethernet TCP Output Documentation RS 232 and TCP Ethernet output messages are the same except for scanning or alarms The output string consists of two characters followed by four detector counts that are comma delimited The string 1s ASCII characters with a carriage return line feed CRLF at the end For Gamma the first two detectors are in the master pillar and the second two are in the slave pillar Detector 1s master lower Detector 2 1s master upper Detector 3 1s slave lower and Detector 4 is Slave upper For Neutron the first two detectors are in the master pillar and the second two are in the slave pillar The neutron detectors are numbered 5 8 Detector 5 1s master upper Detector 6 is master lower Detector 7 1s slave upper and Detector 8 1s slave lower Reference S
52. eady ON for full duplex OFF for half duplex Both of the RJ 45 ports of the CS14 support auto cross MDIX operation performing the auto cross function under auto negotiation mode only Two sets of LEDs to indicate the operating status of ports are mounted on the top and front For each port there are Link and Activity LK ACT LEDs on the top indicating that the media cables are connected correctly and showing by flashing when there is traffic This document is the exclusive property of TSA Systems Ltd 59 Unauthorized use or distribution is strictly prohibited Doc 5022 Rev A Magnum CS14P Premium Rated Converter Switch _ FIH PWR LAJ T 7 10 100 gt Bud Y Eraz H Figure 6V Figure 6W Switch Fiber Port 1 1s controlled by an F H switch provided underneath the port socket F enables full duplex mode and H enables half duplex mode The default setting is p NOTE This switch is very small and can easily be broken care must be taken when switching form one mode to the other This document is the exclusive property of TSA Systems Ltd 60 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 6 7 THE LD 260 LOAD DISCONNECT The LD 260 Load Disconnect controls the power to the system and shows the status of the power with a pair of LEDs figure 6X The amber LED indica
53. easier This document is the exclusive property of TSA Systems Ltd 67 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A TP1 thru 4 I Stage Gain R17 thru 20 2 Stage Gain Adjust A TPS thru 8 r 2 stage gain TP9 3 to 5 Vde LLD GND d 4M a ULD EU ejeje j 5 Vdc I I Disc Ref l Voltage 3 3 Vdc Ref us i HHV 448 HHV 448 Adjust Voltage Adjust Gamma High R1 Voltage Adjust R1 This document is the exclusive property of TSA Systems Ltd 68 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A Aligning The HHV 448 1 Stage Gain The high voltage is set to ensure that the peak pulse amplitude at the output of the first stage amplifier is at least 0 75 volts This setting will provide the best overall performance of the system Ifthe high voltage is too low the signal to noise ratio will suffer While following this procedure refer to Drawing 21 Schematic and Drawings 15 and 22 Component Designator 1 Attach the oscilloscope to the SCA 774 board figure 7B and set as follows channel 1 probe to TP1 and probe ground to TP14 Ensure that the scope probe is set to 10X 2 Set the vertical deflection to 1 volt division horizontal sweep speed to 0 5 Usec division and positive edge triggering 500mV div and Ipsec for digital o
54. ection 7 2 2 1a TM 850 Detector Arrangement for detector locations The RS 232 port settings are as follows Baud rate set at 19 200 bps Data bits set at 8 Parity set at 0 Stop bits set at 1 Flow control set at None The PC Ethernet or HyperTerminal port settings are as follows Host address should be set to the exact IP address entered in the SC 770 the Port number must be set at 1600 and Connect using 1s set to TCP Winsock Output GB xxxxx xxxxx xxxxx xxxxx CRLF Definition Gamma Background sent every 5 seconds The one second counts are averaged from a 20 second count buffer The 20 second buffer is based on four 5 second rolling averages Output NB xxxxx xxxxx xxxxx xxxxx CRLF Definition Neutron Background sent every 5 seconds The one second counts are averaged from a 20 second count buffer The 20 second buffer 1s based on four 5 second rolling averages Output GH xxxxx xxxxx xxxxx xxxxx CRLF Definition Gamma High Background Fault is sent every 5 seconds for the duration of the fault condition The high background fault condition is a settable parameter in the controller Output GL o000GXXxxx xxxxx xxxxx CRLF Definition Gamma Low Background Fault 1s sent every 5 seconds for the duration of the fault condition The low background fault condition is a settable parameter in the controller Output NH xxxxx xxxxx xxxxx xxxxx CRLF Definition Neutron High Background Fault is sent every 5 sec
55. eeeeeeeeeeveomeseeeeeereeeeeeeeeeeeeeees Ncc scscc5lslscsislcc BE SqGE OI UU et te ee a rr rr PT Tite Tri tith Trit tite Tet Tt Le TT 1100111011111 01 Ms 2 00V mu ILU IAABBMIILIIELLIL WILL LL a2 wi WABABABBIANISMSUILL Cursor 1 Cursor 1 1 02 ee api OIE O i O M H H H H Hl O ee ee Cursor 2 2 02V 320mV 39 122 0kH2 Figure 7J nn CH1 TT 3B BBHOkHz Figure 7H Setting the 2 Stage Gain signal to 2v with the scope set at 1 00V div Setting the 2 Stage Gain signal to 2v with the scope set at 500mv div SCA 775 Slave Pillar Repeat steps 7 1 2 3 7 1 2 4 on the slave pillar This completes the gamma alignment NOTE Always run a variance test after an alignment to ensure that everything is working properly 7 2 3 Variance Analyzer Mode After an alignment is completed a variance test should be performed The variance analyzer can identify potential issues with the detectors and associated electronics TSA recommends running 5 15 second passes After five passes all variance readings should be less than 0 150 Refer to Appendix A Section 10 0 for further details on the variance test and the formulas used Press the pound lt gt key to terminate the variance test NOTE The variance for a detector that is disabled will be 99 00 7 2 4 Operational Test Due to the many different environments and materials being monitored the operational test will
56. eretT pt Sa EDS Eu e meters enter rte tert 61 eB CUPAN T DETELA E ee ere MEC MM E C ere DE DAE 62 eG B RI ge 1 Oe eT ee ee me Tee me nee Tee er eee 62 Tools and Tou pee Hb srjenscneosesaasentees ecasieassasunehosasiedaasedsuenisaetecaaacsunessGastelaersdeventsmatecgeacsunens 66 uL CAT REIS disi a E E ES 66 Aligning The HHV 448 Ist Stage GAN encerc a a 69 Aligning The SCA 774 2nd Stage Gain See Drawing 20 eee 71 SCA TT GSE Vices satel 12 Anal Mod 7 2 5 Performance Verification Checklist CCHIERIETI oisa c cales debct adt Leti c esa dis 23 LONTRA INTE NANCE aa A 74 LaL E borouc Alpinen ed Cele Cs ee ee nee ee ee eee ee RARA 74 Tools anm Egu DE A eaa Eea E EE EE E E EE 74 C ATT E E P e A ORPNEERN IU FD IE M CPUS 74 NOTE Be careful not to force the lid open and break the hinge 74 PNT TG The TAD e T EE PH 75 Aligning The SCA 774 See Drawing 20 Component Designator sss 75 vL EA ol RUE ON RENE citiaue E E NRS 75 7 3 4 Performance Verification Checklist Neutron te eecccccccesssssssseccccccesssssssseeeseeees T1 APIR BLL STOOT VO cuni 78 MMO ENCA A 78 GO PO TROGIRU T e 80 ORB LIE RATEISETN SIEUT EID mtem temm m 81 fie amu Deeper ASSCHIDBUR ee ee ee ee ee en ee ee eee 81 ies Ory NEO 61 8 LGE do H 82 as eaten ep eeepc eee 83 Bl LOSS
57. ervals Nsigma is a float value used in the alarm algorithm P a place holder to make the message 32 bytes to match all other messages Output S G2 1111 0 069 0 455 01 1010 P CRLF Definition S etup G amma 2 Detectors on line Master Lower level discriminator Master Upper level discriminator Relay output Algorithm Detectors on line 1 1 0 0 Masters ON Slave OFF Position Definition First number Master lower Second number Master upper Third number Slave lower and Fourth number Slave upper Master Lower and Upper level discriminators voltages Relay Output 0 OFF 1 ON 3 AUTO Algorithm 1 0 1 0 SUM amp VERTICAL ON Position Definition First number SUM Second number HORIZONTAL Third number VERTICAL and Fourth number SINGLE P Place holder Output SG3 0 069 0 455 20 0 000 1 08 8 CRLF Definition S etup G amma 3 Slave Lower level discriminator Slave Upper Level discriminator Background Time Background Nsigma Software Version Master Lower and Upper level discriminators voltages Background time in seconds Background Nsigma is a float used for throw through Should be 0 00 Software Version This document is the exclusive property of TSA Systems Ltd 91 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A Output SN1 000050 2 0047 1200 04 PPP CRLF Definition Setup
58. he other yellow Signals from the sensors are sent to a Nano Controller which analyzes the timing between beam breaks and provides RS 232 object speed information and a dry contact occupancy signal to the SC 770 controller The sensors have a range of approximately 70 meters Figure 6Z Figure 6AA E Figure 6AB This document is the exclusive property of TSA Systems Ltd 63 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A NOTE Pay special attention to the wire colors when wiring into a system European wiring standards for dc are Vdc brown wire GND blue wire Photo beam sensors are wired Vdc blue wire GND brown wire This applies only to IR photo beam sensors with Nano Controllers because they are configured as Dark Sensing Current Sourcing 6 9 ALARM LIGHTS AND AUDIBLE ANNUNCIATOR A red strobe light and audio enunciator are used to indicate gamma radiation alarms A blue strobe light and audio enunciator are used to indicate neutron radiation alarms All operate on 12 Vdc A steady amber light 1s used to indicate a High or Low Fault condition and or ac power loss Audible Er m ht d a ia a isa Gamma Pap Neutron Light Light Fault Light uw 8 50 Figure 6AC This document is the exclusive property of TSA Systems Ltd 64 Unauthorized use or distribution is strictly prohibited Systems
59. hibited re A Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A Ini U SC 770 Display Menu Options Factory Settings 1 PARAMETERS 2 FUNCTIONS 3 ADVANCED 1 PARAMETERS m N UJ 3 gels Q eo eo o raj Y A D t S i z 1 LJ T Lo lem O l za D do m x E L a D m m m Md r a Wil 2 FUNCTIONS LA LA r ip s L nu us ta ig LJ u s a ies gt us D 3 COMM SET 1 PARAMETERS This document is the exclusive property of TSA Systems Ltd 16 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 3 3 1 GAMMA PARAMETERS HI LO LEVELS Background fault levels INTERVALS Number of 200ms intervals per comparison OCCUP HOLDIN Number of 200ms intervals to hold in after occupancy NSIGMA N sigma radiation alarm level DET ONLINE Number and position of detectors 1n the system HI LO LEVELS sets the low and high background fault levels in cps per detector If the counts fall outside this window the system will indicate a HI or LO Gamma background fault and will not allow further operation until the problem is corrected Un B WN Re These faults are intended to flag a failure in the detector or electronics and to protect against artificially elevating the background to reduce the mon
60. his level should be set to alarm if the average background deviates too far from normal normally set at 50 cps per detector bank This alarm is intended to flag a failure in the electronics NOTE There are no LO neutron alarms because the neutron background routinely fluctuates to zero counts per second per bank of detector tubes This document is the exclusive property of TSA Systems Ltd 28 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A MAX INTRVALS Maximum number of one second intervals used in the test before the result 1s compared to the ZMAX value The range is 0 20 intervals the factory default setting 2 ALPHA VALUE Alpha value is a term used to express the false alarm rate and its value is used to select the alarm and background values used in the algorithm If this number is not entered exactly the selected rate will be the closest lower value Normally set at 47 Alpha Value 12785 9459 6924 5016 3596 2551 1791 1245 856 Approximate false alarm rate 1 78 1 106 1 144 1 200 1 278 1 392 1 558 1 803 1 1168 1 1715 1 2545 1 3817 1 5780 1 8850 1 13699 1 21277 1 33333 1 52632 1 90909 1 142857 1 250000 433 462 492 524 555 588 621 656 690 726 762 799 836 874 912 950 989 1028 1075 1112 1160 Z Alarm Value This document ts the exclusive property of TSA Systems
61. i um T AY Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 4 3 GAMMA PARAMETER Permits the operator to view the gamma parameters figure 4B The parameters cannot be changed from the PC SC 7 0 Gamma Parameters Part Gamma Parameter Gamma Alarm Data Gamma Show 4 l Parameters Oecup Count 2 High Alarm 2000 Alarm Count 1 E z Clock Calendar Hald in 18 dM DD vy HH MM Ekg Time 20 i2 fiz 2005 m e M Sigma 7 O00 Detectors Algorithms BkgSigma 0 000 Ww 1 Single LLD 0 068 w 2 iw Vertical ULE 0 455 3 Harm 4 W Sum Figure 4B 4 3 1 Gamma Alarm Data Displays the date time and counts from the last six gamma alarms figure 4C Selecting one of the six View buttons will bring up the View Alarm Data screen figure 4D for that alarm and displays the data leading up to the alarm in a graph format SC 7 70 Gamma Alarms Data Last b Alarms 12 12 2005 11 51 32 View 12 12 2005 11 51 33 View 12 12 2005 11 52 5 Views Alarm Data 12 12 2005 11 52 14 Views 12 12 2005 11 52 23 View 12 12 2005 11 52 33 ViewB Iw Detector 2 lf Detector 3 jv Detector 4 i SUM Dat 1 Det 2 Det 3 Dat 4 SUM 399 43 44 42 73 UE Figure 4D This document is the exclusive property of TSA Systems Ltd 37 Unauthorized use or distribution is strictly prohibited Ini t Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A
62. imated speed of passage and pillar spacing This document ts the exclusive property of TSA Systems Ltd 45 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A Neutron Background 5 second background interval 1 20 second rolling average Bkg estimation 2 20 second rolling average Bkg estimation 3 20 second erage Bkg estimation When the monitor is occupied the system will ignore the current 5 second background interval and calculate the alarm threshold based on the previous completed interval Neutron Occupancy 200 msec Occupancy _ 1 one second alarm comparison look back l wao 2 one second alarm comparison Note that this IS NOT a rolling average This document is the exclusive property of TSA Systems Ltd 46 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 5 3 MODES 5 3 1 Self Test Mode When the system is turned on it performs a Power On Self Test POST The POST performs the following RAM Tests conventional memory primarily the area used for the processor s stack NVRAM Tests the battery backed non volatile memory used to store parameters and downloadable data LAMPS The audio enunciator and both lamps are turned on for approximately 7 seconds If any of these tests
63. ironment The background is updated in 5 second increments with the current background reading equal to the one second rolling average of the last N 5 second intervals This updates the background completely every selected background time 20 120 seconds When the unit is occupied it ignores the current 5 second background interval and goes into FAST COUNT mode While the monitor 1s occupied it makes an alarm comparison every second using this one second count it calculates a value Z that 1s compared to stored background and alarm values It 1s important to note that the occupied neutron count rate data IS NOT a rolling sum Three decisions can be reached from the Z value Background Z is set to zero and it gets another one second count No decision Z is stored the next one second count is entered into the formula a new Z value is calculated and this value is compared to Background and Alarm values 3 Alarm Stops comparisons and sets alarm relay The monitor is set to start monitoring the passage 1 second before the monitor has been occupied This is called look back The monitor will continue to make comparisons until the occupancy hold in time has expired after the end of the occupancy This is called look after NO m The occupancy hold in forces the unit to continue to make alarm comparisons after the occupancy detector has cleared look after The amount of time selected for this parameter is based on the est
64. it This document is the exclusive property of TSA Systems Ltd 82 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 8 5 OCCUPANCY SENSOR To check the occupancy sensor on the master pillar 1 Turn the unit on 2 Connect a DVM to TS2 5 and TS2 9 and verify 5Vdc NO condition when un occupied and a 0Vdc NC condition when the pillar is occupied This document is the exclusive property of TSA Systems Ltd 83 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 9 0GLOSSARY ADC Analog to Digital Converter is an integrated circuit that converts an analog signal into a binary number than can be used by the microprocessor CPS or cps Counts Per Second High Background Fault The condition that occurs if the counts exceed the programmed high background level This condition prevents further operation until the problem is corrected Normally set in cps LCD Liquid Crystal Display LED Light Emitting Diode LLD The Lower Level Discriminator provides an adjustable threshold that determines the lowest signal level that will be accepted as a nuclear pulse by the system s electronics Some systems have both upper and lower level discriminators that can be used to set a discriminator window The discriminator window can be used to effectively reduce the b
65. itor s sensitivity The precise settings will vary with local conditions and requirements but a good starting point is usually half of the average background for the low and 1 5 times background of the average background for the high The previously mentioned percentages are based on a single detector s counts This document ts the exclusive property of TSA Systems Ltd 17 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A INTERVALS INTERVALS actually controls two functions 1 The number of 200 ms intervals to look back after the system detects occupancy 2 The number of 200 ms intervals that are used for each alarm comparison This feature ensures that the front of the approaching object is scanned and prevents it from affecting the background The factory setting is 5 intervals one second but the optimum setting may vary with local conditions NOTE The number of intervals is an important parameter Reducing the number of intervals results in fewer counts per alarm comparison i e poorer counting statistics which in turn increases the measured false alarm rate If the number of intervals 1s set to anything except 5 the occupied count rate is NOT in cps The alarm comparisons will be based on the sum of the counts during the selected number of intervals OCCUP HOLDIN Occupancy HoldIn is the number of 200ms intervals to
66. ium redit bu Soo duu ee uins 3 SCSTTU External Nae Woman a ttum eub a uet dee dedomu mtd Mex ou de ae eee tam du dee 4 SC 770 MWaarme AT MA esis ae qu iot epe Mete do s imt bed oso abled eins co itu oh d du e coed tae Pb io Ed 5 we SF TO Intermal de Wess NER IDA NEN MP IMS 6 SC 771 Schematic Diagram sheet 1 045 edt eds diu etta a dus eade 7 SC 771 Schematic Diagram sheet 2 Of 4 eese nennen 8 oce TI Schematic Diagram sheet 9 OE 4 xoa ete otl ieu tet edetatvvcti dedo cedo ad esas 9 oc TLschemaue Diagram Sheet 0I 4 euer ehe e do uploaded Sede dducu qi duo T 10 SC 771 Circuit Board Component Designator eeessssseessssssseseeeeeeeeeeeeeeennnnnn nnn 11 GPRDB 750 5chemauec DI3UEatus t ooeoe oo metro Sono bo o eot atte cetus n ad bte te eke 12 GPRDB 756 Component DOSISDm amp IDDs oerte reto het onusta Ere tua Me DE POM RvuMie ir hs 13 SC ATIS Bxternal VIW aneta et et crested cate tiheatadie cutem bac stmt dues cotta Ace ruens 14 SO AST T5 Wine Drager ain ao doses eso o pter ct on Dcus ufus E E TR AN 15 SCARF 7S Intermial E 16 SC A 7 4 schematic Diagram sheet 1 OP4 xc n sera ete neta eee aia rds 17 SCA 74 Schematic Diagram sheet 2 OL done re EPIRI OE TET 18 SC A 774 Schematic Diasram sheet 3 Of 4s e ep pret te b VR e ede anes 19 DCA TIMESchemalie Diagram sheet AoT co t tne ttt dedisbe 20 SC A 774 Component D6SISnaltot ce conn reet eene need ne ege r nE ee nente nada epa LE O 21 HHV 443 Schem
67. ive property of TSA Systems Ltd 65 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A WARNING This procedure involves High Voltage and should only be performed by qualified HIGH personnel VOLTAGE h d Tools and Equipment since the electronic alignment procedure requires specialized tools and knowledge only qualified technical personnel should perform these adjustments and measurements The following tools will be needed for this procedure DVM with a resolution of 0 1 millivolts 0001 volts High voltage probe with a range of 10 000 Vdc and Zin 2 100 MQ Oscilloscope with greater than 20 MHz bandwidth 5 to 10uCi of Cs Cesium NOTE Other mono energetic sources may be used Call TSA for full details SCA 775 Master Pillar NOTE Be careful not to force the lid of the SCA 775 open and break the hinge All of the alignment adjustments are located in the SCA 775 enclosure To gain access for the alignment unlock the latch on the electronics cabinet door and swing the door open Loosen the four captive thumb screws located on the lid Gently pull the lid away from the bottom of the enclosure and swing the lid down to expose the electronics The top board 1s the SCA 774 board This board contains the amplifiers and SCA electronics The base contains two HHV 448 boards refer to Figures 7D amp 7E in Section7 2 2 1a to identify the boards
68. kg 1717 400 422 442 453 1371172011 1 17 45 Neu HFault 4028 783 1030 1064 1091 13 11 2011 21420 NeAvgbko 30 6 3 7 G8 137 1172011 21420 GAvgBkg 17 42 405 433 447 457 12 71 2011 3 14 20 M Avg Bka B 2 2 2 137 1172011 31420 G AvgBkg 1740 406 428 448 458 121 2011 41420 H Avg Bka B 2 2 2 1 711 2001 41420 G AvgBkg 1729 405 425 446 455 121 2011 5 14 20 N Avg Bkg B 2 2 2 1371172011 81420 GAvgBkg 1724 402 423 444 455 1371 2001 amp 14 20 N Avg Bkg o 2 2 2 137 1172011 amp 1420 G AvgBkg 17 723 338 418 450 457 13 11 2001 7 14 20 M A amp vg Bkg g 2 2 23 2 1371172011 1420 G AvgBkg 17 35 402 421 453 453 1371 2001 81420 M A amp vg Bkg oH 2 2 23 2 1371172011 81420 G AvgBkg 1744 404 424 455 46l 13 11 2001 314 20 M A amp vg Bkg 2 2 un 1371172011 3 34 20 GAvgBkg 1736 401 421 454 460 13 11 2011 10 14 20 Avg Ekg BG pa d AS ra 1341172017 10 14 20 B AvgBkg 1745 404 423 456 462 13 11 2011 11 14 20 N A amp vg Ekg Be oue ge US ig 1711 2011 11 14 20 B AvgBkg 1754 407 425 458 463 13 11 2001 12 14 20 N amp va Ekg Hs xe cy SPE sy 1371172011 12 14 20 B amp vaBka 1743 406 424 457 4B r2 r3 r3 r3 ScCOM Version 1 02 Compatible with SC 770 Firmware Version 1 06 or greater T54 Systems ltd 093 2003 tag Website www bsasystems cor Figure 4U
69. lse alarm rate can occur if this value is set too low SYSTEM ID Assigns an identification number to the system The number is used to uniquely identify the system to a PC This number must be used by the PC to establish a communications link This range of this number is 1 32 767 This number is set to 1 when the system 1s shipped from the factory This document is the exclusive property of TSA Systems Ltd 21 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A PROFILING The controller can be set to continuously output an ASCII data string to the Ethernet and RS 232 outputs when the unit 1s in occupancy The display will show ON or OFF Pressing any key other than the lt gt key toggles the setting The lt gt key accepts the current setting refer to Section 11 Appendix B Data String Outputs 3 3 4 NEUTRON PARAMETERS HI LEVEL HI background fault level MAX INTRVALS Maximum number of one second intervals for alarm comparison ALPHA VALUE False alarm rate ZMAX VALUE Alarm value after MAX intervals is reached SEQ TEST Forces a neutron alarm if set point is exceeded Un B WD NO Re HI LEVELS Sets the high background fault level in cps per detector bank If the counts exceed this level the system will indicate a HI background fault and will not allow further operation until the problem is corrected T
70. me while observing the counts from both detectors The following keys are used lt 1 gt increments the LLD by one step approximately 0 0098 volts lt 7 gt decrements the LLD by one step lt 3 gt increments the ULD by one step approximately 0 0196 volts lt 9 gt decrements the ULD by one step When the settings are satisfactory press the pound lt gt key to accept the settings and advance the menu for the slave pillar The display will change from MASTER ULD LLD to SLAVE ULD LLD to indicate that the discriminators in the slave pillar are ready to be adjusted Repeat the process for the slave pillar This document is the exclusive property of TSA Systems Ltd 27 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 3 Factory Defaults Pressing the asterisk lt gt key at either the master or slave screen will load the default discriminator settings of LLD 0 069 and ULD 0 455 for a given pillar Complete this step for both the Master and Slave pillar VARIANCE Performs a variance test on all gamma detectors The SC 770 runs 15 second variance passes TSA recommends running five 15 second passes After five passes all variance readings should be less than 0 150 Refer to Appendix A Section 10 for further detail on the variance test
71. ncealed as well as external damage 2 1 1 Damage Claims If the instrument is damaged in transit or fails to meet specifications upon receipt notify the carrier and TSA Systems immediately Shipping cartons packing materials waybills and other such documentation should be preserved for the carrier s inspection TSA will assist in providing replacement or repair of the instrument 1f necessary 2 1 2 Storage If the instrument is to be stored for any length of time disconnect power to the instrument and remove and store any batteries separately in a cool place If batteries are to be stored for any length of time they should be inspected and if necessary fully charged at least once a month The enclosures may be laid flat on their backs but should not be stacked Care should always be taken to avoid subjecting the instrument to severe mechanical or environmental shock The instrument should be stored in a dry temperature controlled location 2 1 3 Shipping Before returning the instrument for any reason notify TSA Systems of the difficulty encountered giving the model and serial numbers of the equipment TSA will furnish specific shipping instructions 2 2 SITE SELECTION AND PREPARATION Select a site 1n accordance with vulnerability assessments and engineering surveys The pillars will need to have an adequate base or some means of stabilization to insure that they remain stationary after alignment In addition the system requires 9
72. nload Historical Data will have All Records selected figure 4P leave this setting as it is and click on the Download button 6 Select the desired location of the file to be saved by using the pull down menu on the Save in box then type desired file name in the File Name box next click the Save button figure 4Q ovals 362 Elis turiez Lait Gamma Alarm Data Gamma Show Count Portal History Extra 4 t Download Historical Data t All Records 2055 Selected Records Download last Recorda Records remaining 1935 Figure 4P Save in BD Desktop e Us e E Emy Documents E My Computer be My Network Places P public on samba server Tsaz me Network Connections Filename JAB ICT 4 Oct 12th 2008 Save as tpe sc 755 Lag File Cancel Figure 4Q 7 The records will begin downloading to the specified file name The Transmit and Receive lights will flicker back and forth until the process has completed After the download has completed a Download Complete message box will be displayed figure 4R Click on the No button if you do not want to view the data if you choose to view the data a screen titled View History Record will appear figure 4S You can scroll through the data using the PgUp and PgDn buttons on your keyboard PA Dovailuad Complete SC 770 History Data has been downloaded Would you like to view the history data file now Figure 4R 2
73. ns and Service Manual Doc 5022 Rev A SHOW COUNT Displays each detector s counts in cps updated once per second Show Count mode will display detector count rates on all operable detectors including those that are disabled in DET ONLINE Press the pound lt gt key to exit the Show Count mode NOTE All alarms are disabled in the Show Count mode DSCR ADJUST Opens the menu to display and or adjust the LLD and ULD set points The discriminators set the energy levels at which the system will be accept counts The energy window may be changed using the discriminators The relationship of the discriminator voltage to energy level in keV is approximately 1 volt of discriminator level equals 330 keV Using this formula the factory settings equal LLD 0 069 volts 22 keV ULD 0 455 volts 144 keV This relationship is an approximation In practice the actual values will vary slightly Always test the system with the isotope s of interest to ensure maximum sensitivity Refer to the formula for signal to background ratio in Appendix A Section 10 for details on optimizing the discriminator settings for specific isotopes If SNM is the primary concern leaving the discriminators set at the factory defaults of 0 069 and 0 455 volts is recommended If the isotopes are unknown setting the ULD to its maximum setting 5 040 volts will improve the high energy response The master and slave discriminators are set independe
74. ntly to permit maximum flexibility in programming the system In almost all cases the settings will be the same for both the master and slave pillar NOTE After changing the discriminator settings always run a variance test to ensure that system noise is not affecting the count data This document is the exclusive property of TSA Systems Ltd 2l Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A Three methods of adjustment are provided 1 Direct Entry Press the zero lt 0 gt key from the MASTER ULD LLD menu The operator will be prompted for a NEW LLD setting Enter the new value the first digit entered 1s volts the second digit entered is tenths of a volt etc and press the pound lt gt key or simply press the pound lt gt key to accept the current setting NOTE Since the DACs have limited resolution manual entries will be rounded to nearest value the DACs can output Once the pound lt gt key has been pressed the ULD menu will be presented Use the same method to set the ULD This sets the discriminator levels for the master pillar After the discriminators in the master pillar have been set the menu heading will change to SLAVE ULD LLD Repeat the above process to set the discriminators for the slave pillar 2 Manual Adjustment At the MASTER ULD LLD menu the discriminators may be adjusted one step at a ti
75. occupied the system begins fast count monitoring and will alarm if the count exceeds a predetermined alarm level The system will generate a background fault if the background radiation level exceeds or falls below preset limits The monitor is equipped with tamper switches and power fail indicators These conditions may be monitored from a remote location using a TSA model AM 270 Alarm Monitor A system can consist of one or two pillars which contain the subsystem modules The TM 850 pillars are spaced far enough apart 6 meters or 20 feet to permit safe passage for train traffic The monitor is powered by a battery which will provide at least 12 hours of continuous service in case of a power failure The battery is continually charged by the power supply as long as ac power is available The system may be setup in any location where a 90 250 Vac 47 63 Hz power source is available Each pillar contains four gamma radiation detector assemblies The TM 850 contains sixteen He tubes for neutron measurement Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A The master pillar also has a System Controller Model SC 770 a Single Channel Analyzer Model SCA 775 a battery battery charger load disconnect LD 260 RS 232 to RJ 485 converter Ethernet to Fiber media converter PMFX Signal Pick Off box speed sense Nano Controller occupancy detectors alarm lights and an audio indicator s The slave pillar
76. of variation from the background The formula for N Sigma may be found in Appendix A Section 10 0 CAUTION Do not leave the system in this forced state for normal operation 5 3 4 Variance Analyzer Mode Gamma Only In this mode the unit takes seventy five 200 milli second background counts and performs a variance calculation on the data A more detailed description of the variance test may be found in Appendix A Section 10 0 This document is the exclusive property of TSA Systems Ltd 48 Unauthorized use or distribution is strictly prohibited Th A Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 6 0COMPONENTS 6 1 THE SC 770 The SC 770 module is installed in the electronics cabinet figure 6A It is made up of the following components Figure 6A 6 1 1 THE SC 771 The SC 771 board is the main data collection point and uses program software to run the unit and perform all functions figure 6B The SC 771 receives battery voltage and uses a dc dc converter to supply the 5 Vdc required by its on board circuitry The SC 771 board uses highly integrated components Ifa failure occurs in this board it must be replaced This document is the exclusive property of TSA Systems Ltd 49 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 6 1 2 Rabbit Board Program firmware is stored and executed
77. onds for the duration of the fault condition The high background fault condition is a settable parameter in the controller This document is the exclusive property of TSA Systems Ltd 88 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A RS 232 OUTPUT Output GS Xxxxx Xxxxx xxxxx xxxxx CRLF Definition Gamma Scan Gamma counts sent every 200mSec while occupied and not in an alarm state The RS 232 output displays in CPS averaged from five 200mSec counts in the rolling count buffer The counts are one second averaged from five 200mSec rolling count buffer Output GA Xxxxx Xxxxx xxxxx xxxxx CRLF Definition Gamma Alarm Gamma counts sent every 200mSec while occupied and in an alarm state The counts are one second averaged from five 200mSec rolling count buffer The threshold is a settable parameter in the controller Ethernet OUTPUT Output GS Xxxxx xxxxx xxxxx xxxxx CRLF Definition Gamma Scan Gamma counts are sent every 200mSec while occupied and not in an alarm state The counts are 200mSec based NOTE When an occupancy occurs five 200mSec pre occupancy count strings are sent out immediately Output GA Xxxxx XXxxxx xxxxx xxxxx CRLF Definition Gamma Alarm Gamma counts are sent every 200mSec while occupied and in an alarm state The counts are 200mSec based The threshold is a settable parameter in the controller
78. ongmont Colorado 80504 9698 USA Phone 1 970 535 9949 Fax 1 970 535 3285 info tsasystems com This document ts the exclusive property of TSA Systems Ltd Unauthorized use or distribution ts strictly prohibited 2 E Emm YA 5ystems Ltd TM 850 Operations and Service Manual Doc 4 5022 Rev A Table of Contents lH Py y 5 3 i0 17 A 1 0 OCUOI9A 5 1 1 SCOPE AND PURPOSE OF MANUAL eene nnn nnn nnnm nnne 5 1 2 GENERAL DESCRIPTIQON leeeeeseese eere nnne nnne n tnmen enne 5 L3 SPECIFICATIONS XEMMSMT 7 LELE Fe GO J Lgl T ES TIR ORENSE ENS La LAGT Vono DG ED ecc actin E ERE GEIGER LEER GU PER D Uo CAE 21 Ota E E OEE AE sn ie eee cd ened T OE ne aeons 9 URRERUGS 298 2 m 9 ONCE oo meeeUE 9 A Wie Beli b e116 eee ee ROREM 9 2 2 SITE SELECTION AND PREPARATION iun cincta ad dies ia gri tuta da Slap CH cdi 9 2 3 DETECTOR CABINET INSTALLATIQON eeeeeeseee rennen 10 24 ELECTRICAL INSTALLATION cu ouaeaucia2zids vosadsuac bs kat is uicit cuauid a pia i pr P pidu FS RUD EE ubHdR EA 10 2 5 PILLAR TO PILLAR INTERCONNECTIONS eee ccc rernm 11 ZO START UP AND SELF TEST irata tria rar ra aia ornare udi aaide a E dada e a 12 3 0 SET UP AND PROGRAMMING Uu nieto a Ra VR2 RE 2SR ERR RES VER ERU Mi E eU iE E Rd ds Gas 13 UB Rum e
79. ons you can increase the BKG Time to help average out those background spikes over a longer period of time SHOW VERSION Displays the firmware version currently installed This document is the exclusive property of TSA Systems Ltd 26 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 4 5022 Rev A CLEAR G CNTS The SC 770 counts the number of occupancies and alarms since the system was turned on or since midnight NOTE Counts are cleared at midnight every night These numbers are displayed here The counter may be cleared by pressing 1 pressing any other key exits this mode without clearing the counter Each time the system is power cycled these numbers will be cleared from memory F ALARM TEST The False Alarm Test displays the number of alarm comparisons that have been made and the number of alarms that were detected These values are cleared when the system is turned off The primary use for this feature is to test the number of false alarms in a controlled environment BKG NSIGMA Sets the sigma value for a throw through alarm This routine runs continuously in background mode to ensure that a source is not thrown through the monitor without an occupancy being sensed Throw through alarm comparisons are performed every 200 ms during background mode The range is from 0 0 to 99 9 Setting the value to 0 0 will disable this feature A high fa
80. oosen the four captive thumb screws located on the lid Gently pull the lid away from the bottom of the enclosure and swing the lid down to expose the electronics The top board is the SCA 774 board This board contains the amplifiers and SCA electronics This document is the exclusive property of TSA Systems Ltd 74 Unauthorized use or distribution is strictly prohibited 5ystems Ltd TM 850 Operations and Service Manual Doc 4 5022 Rev A The base contains two HHV 448 boards refer to Drawing 15 to identify the boards One of the HHV 448 boards provides high voltage to the gamma detectors the other provides high voltage to the neutron tubes 3 l I 1 a Low Voltage Checks This step verifies that the low voltage circuitry 1s operating properly before performing the actual alignment Using the DVM verify that the following dc voltages are present before performing an alignment All readings are referenced to ground there are numerous ground test points on the board Always connect the ground lead first TP14 17 are convenient grounds use a micro clip lead and leave it connected while performing all low voltage checks Test Point Voltage Description TP31 12 6 volts or gt Switched battery TP33 5 0 2 volts VCC TP9 3 to 5 volts negative voltage TP30 5 0 005 volts discriminator reference voltage TP12 Neutron LLD setting 0 012 volts normally 0 504 Vdc ee RR TP20 Neutron ULD setting 0 012 volts normally 5 04
81. or 4 alarm comparisons per occupied interval depending on the number of detectors 3 comparisons each 200 mSec x 2 sec 30 alarm comparisons for a 2 second occupancy This document is the exclusive property of TSA Systems Ltd 25 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A The standard Algorithm configuration for Train and Vehicle monitors is with SUM and VERTICAL calculations enabled Again this set up will result in 3 alarm comparisons per interval 3 comparisons each 200 mSec x 3 sec 45 alarm comparisons for a 3 second occupancy The Algorithm configuration has a direct impact on the false alarm rate The standard configurations listed above will produce a false alarm rate of 1 1000 occupancies If the configuration is changed to enable the single option 4 additional alarm comparisons are made per 200 mSec interval one for each detector While this will increase the sensitivity of the system the false alarm rate will increase to 1 233 occupancies BKG TIME Sets the background counting time for the system Press lt 1 gt to increment the time by 5 seconds press lt 7 gt to decrement the time by 5 seconds and press lt gt to accept the setting Range is from 20 120 seconds NOTE Changing this setting will cause the system to reset and collect a new background f you are in an area with large background fluctuati
82. r sealed lead acid battery charged by 90 250 Vac 47 63 Hz line power Passage Time TM 850 3 seconds at 5mph 8kph Serviceability System All components are easily accessible for testing and maintenance System Controller Self checking routines and easily performed tests simplify board level trouble shooting The modular design allows quick and easy repair and maintenance Occupancy Detectors TM 850 One programmable ultrasonic sensor and one set of infra red photo beams speed sensors Weight TM 850 Approximately 1600 Ib 724 kg per pillar TM 850 Electronics Panels 400 Ib 181 kg per pair Dimensions Not including mounting flanges TM 850 120 h x 48 w x 10 d 305 x 122 x 25 cm This document ts the exclusive property of TSA Systems Ltd 7 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 1 4 OPTIONAL COMPONENTS 1 4 1 Alarm Monitor Model AM 270 The TSA Model AM 270 Alarm Monitor figure 1A is a self contained unit designed for use with TSA s Monitors The AM 270 provides both remote audible and remote visual alarm indicators for radiation levels high and low background and tamper conditions In addition output relays are provided to integrate the AM 270 into existing alarm systems Using TB3 circled in figure 1B which is the 10 pin terminal block in the master side just above the SC 770 controller you can acces
83. ry v O Tamper Switch Function O Connect Battery O Tamper Switches Secured O Run Variance O Set Clock Date O Check Bkg Time 20 sec O Check Bkg Nsigma 0 0 O Check for Short O Battery Voltage V O Check Profiling ON O Turn LD260 on O Offsets Between 1 amp 15mv O Verify Gamma Alarm O Power Supply Voltage v O Thru Beam Sensor Function L1 Verify Gamma LOW Fault O Verify Audio Visual Alarms O Align ist amp 2nd Stage Gains O Weather Seal Cross Bars O Ultrasonic Sensor Function O Verify Amber Light Function O Utility Cabinet Switch Secured O Verify Gamma HI Fault O BNC GND Adjust Test Completed By O Neutron Enable ON O Verify Neutron Alarm O Verify Neutron HI Fault O Charging System Check O Desiccant Placed O Bottom Foamed In O Media Conv Half Duplex Date This document ts the exclusive property of TSA Systems Ltd 35 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 4 0PC COMMUNICATIONS The TSA PC Communications Program SC 770 Com is supplied on the CD that ships with the system documentation The program requires an IBM PC compatible computer running Microsoft Windows XP 2000 NT4 98 or 95 The program allows the operator to examine the system parameters and download data from the non volatile RAM NOTE Communications with the SC 770 Com program will not work properly if profiling is turned ON
84. s into an ASCII text RS232 output The inputs are also used for occupancy detection ese28 C363 T HUH X 13 13 LE de 1 E GE Fanuc VersaMax om Hosa Camtrallar 4 RELAY OUTPUTS ui E GCI0OMDROI0 CD mn conr ro rn LAS i iani Pk 7 1 amp 0700 LFE SC rint Oz Q3 O ra ia lier om gm L2 EL 5 fae IH IN ij BEBE I N CPO a BA Figure 6T This document ts the exclusive property of TSA Systems Ltd Unauthorized use or distribution ts strictly prohibited 57 TM 850 Operations and Service Manual Doc 5022 Rev A 6 5 RS 232 to RS 485 CONVERTER BOX The RS 232 to RS 485 converter box takes the RS 232 output from the Nano Controller and converts it to RS 485 for transmission to the SC 770 controller figure 6U MODEL ASC45G RS232 lt gt R5S485 CONVERTER AUTOMATIC TX CONTROL Figure 6U mee Unauthorized use or distribution is strictly prohibited 58 Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 6 6 MEDIA CONVERTER The media converter takes up to two Ethernet 10 100 BaseT inputs and converts them to a multi mode fiber optic output figures 6V and 6W The fiber optic output uses a SC type connector LED Indicators POWER Steady ON when power is applied 10 100 Steady ON for 100 Mbps OFF for 10 Mbps LK ACT Steady ON for LINK LK with no traffic BLINKING indicates port 1s transmitting receiving ACT F H St
85. s than 1 500 Vdc see Section 7 2 2 1 for the 1 alignment process This document is the exclusive property of TSA Systems Ltd 70 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A Figure 7F Figure 7G The HV probe eround clamp should be connected to the HV MHV connecter at the SCA 775 box Ensure the GND tab on the HV probe connecter is connected in the COM hole on the multi meter Aligning The SCA 774 2 Stage Gain See Drawing 20 1 Place the source on the yellow alignment dot on the lower detector 2 Attach the probe to TP5 and probe ground to TP14 ground 3 Set the vertical deflection to 1 volt division horizontal sweep speed to 0 5 Usec division and positive edge triggering 1V div and Ipsec for digital oscilloscopes The signal seen should resemble signals shown on the following page figures 7H and 7J Set the trigger level 320mv and adjust intensity on the oscilloscope for the best display 4 Adjust R17 on the SCA 774 board to obtain a 2 0 0 1 volts pulse amplitude 5 Move the probe to TP6 and the source to the yellow dot on the upper detector 6 Adjust R18 for the same pulse amplitude This document ts the exclusive property of TSA Systems Ltd 71 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A eeeeevevoeveeeseeee
86. s the output relay contacts for the remote alarm panel The pins are used for the following NOTE RELAY OUTPUT must be left in the lt ON gt position for the AM 270 to function reference Section 7 2 2 1a Terminal Signal AM 270 Block 2 Wire Color Pin 1 gRADI Brown Red Light Pin 3 NRADI Red Blue Light Pin 5 Fault Orange Yellow Light Pin 7 Tamper White Yellow Light Pin 12 GND Black Figure 1A Figure 1B 1 4 2 Occupancy Detectors Any occupancy detector which uses a normally open relay closure may be wired in parallel with the existing occupancy detector Check with TSA s technical staff for further details This document is the exclusive property of TSA Systems Ltd 8 Unauthorized use or distribution ts strictly prohibited ium V Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 2 0INSTALLATION The following procedures should enable on site personnel to correctly install the system for normal operation Follow the procedures in the order given A checklist is included at the end of Section 3 It is recommended that a copy of this be filled out after initial installation and whenever the system is put into service after prolonged storage If necessary consult TSA Systems for assistance 1n case of unusual site conditions or requirements 2 1 INSPECTION Immediately inspect the instrument for mechanical damage scratches dents or other defects It should be examined for evidence of co
87. scilloscopes 3 Place the source on the yellow dot of the lower detector NOTE t makes the alignment process easier if you tape the source to the detector 4 Adjust the trigger level and intensity on the oscilloscope for the best display figure 7C 21 URP i TRUE Y LEE Mi Posi 200 06 SAVE RE EBEN The trigger Waveforms level is critical M 1 00 CHT 320mv 93 4971 0kHe Figure 7C eee This document ts the exclusive property of TSA Systems Ltd 69 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 5 Adjust R1 on the HHV 448 board to achieve a peak pulse amplitude of 0 75 0 05 volts figures 7D and 7E m a yl 21 Ng sif 7 ET Figure 7E HHV 448 Gamma amp Neutron high R1 is located in side voltage R1 adjustment trim pots are the circle accessed through must be accessed thru small holes in the SCA 774 mounting plate shown above 6 Move the source to the upper detector 7 Move the oscilloscope probe to TP2 If the peak pulse amplitude is 20 75 volts the high voltage alignment is complete If the peak pulse amplitude is 0 75 volts adjust R1 to achieve a peak pulse amplitude of 0 75 0 05 volts 8 Use the high voltage probe to verify that the high voltage is 1 500V dc and is stable 5Vdc figures 7F and 7G If the High Voltage is not stable replace the HV board if the HV is not les
88. tes that ac power is present the green LED indicates that the system power is turned on The toggle switch is used to manually turn the system power on and off While turned on the load disconnect monitors the battery voltage level If the battery voltage drops below 10 5 Vde the load disconnect will turn the system power off When as power returns the battery will recharge through the LD 260 as power is automatically reconnected to the system Figure 6X Battery Charger This document is the exclusive property of TSA Systems Ltd 61 Unauthorized use or distribution is strictly prohibited Figure 6Y Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 6 8 OCCUPANCY DETECTORS TSA Systems employs two different types of occupancy detectors depending on the application environment and local operations Each type of sensor has strengths and weaknesses The three types are Ultrasonic IR Photo Beam 6 8 1 Ultrasonic Ultrasonic occupancy detectors are used mainly in vehicle and train systems figure 6Y The sensor emits a short ultrasonic frequency pulse shuts down and monitors for a return signal bouncing back off of an object NOTE Small and or rounded objects do not reflect the ultrasonic pulses particularly well Figure 6Y e Ifa vehicle parks to close to or in the middle of a monitor it can depress the background counts and when the vehicle leaves the background can spike and possi
89. to the influence of the detected Cf 75 gamma rays l l l l Counts l l Proton and Triton Recoil Region I l Gamma Sensitivity t f I Region EE RIE HR 5 040 Discriminator Set Point Vdc 7 3 3 Operational Test Due to the many different environments and materials being monitored the operational test will vary from site to site although several general principles apply in all cases Select an appropriate source and test at the normal speed used for monitoring Repeat the test several times and record the sources and sizes used This document ts the exclusive property of TSA Systems Ltd 76 Unauthorized use or distribution ts strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 7 3 4 Performance Verification Checklist Neutron Repairs made if any list component and type of repair System Alignment unchanged new values PARAMETERS High Level Fault set to Max Intervals set to Alpha Value set to Zmax Value set to Sequential Test set to FUNCTIONS Master Pillar SCA 774 HHV 448 LLD volts ULD volts Slave Pillar SCA 774 HHV 448 LLD volts ULD volts Neutron Enable Electronic Alignment System starts up and runs initial self test without errors All modes operational Background mode in operation area total counts Drive through test list sources and sizes used Performed by Date NOTE Most of this
90. tor settings LLD 0 504 and ULD 5 040 for a given pillar Complete this step for both the Master and Slave pillar CLEAR N CNTS The SC 770 keeps a record of the number of occupancies and alarms since it was turned on These numbers are displayed here The counter may be cleared by pressing 1 pressing any other key exits this mode without clearing the counters Each time the system is power cycled these numbers will be cleared from memory This document is the exclusive property of TSA Systems Ltd 32 Unauthorized use or distribution is strictly prohibited NEU ENABLE Pressing a 1 enables the neutron channels pressing a 0 disables them 3 3 6 COMM SET IP Enter the desired IP address using the keypad All entries must be 3 digits if a one or two digit value is used it must be padded with leading zeros i e 192 168 001 101 NOTE When entering an IP address into a Computer program all leading zeros must be removed i e 192 168 1 101 SUBNET Enter desired value This document is the exclusive property of TSA Systems Ltd 33 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A GATEWAY NOTE DNS amp Gateway are not
91. und lt gt key to exit the show count mode The neutron counts will very from one location to the next but generally the background per detector bank will be between 0 10 NOTE All alarms are disabled in the Show Count mode Show Count mode will display the counts of all detector banks regardless of whether they are enabled or not DSCR ADJUST Opens the menu to display and or adjust the LLD and ULD set points The discriminators set the energy levels at which the system will accept counts Neutron levels set to factory defaults of 0 504 and 5 040 volts are normally acceptable The master and slave discriminators are set independently to permit maximum flexibility in programming the system In almost all cases the settings will be the same for both pillars Proton and Triton Recoil Region Counts UA go JUS Sensitivity 0 504 5 040 Region Discriminator Set Point This document is the exclusive property of TSA Systems Ltd 31 Unauthorized use or distribution is strictly prohibited FG A E A Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A ini Three methods of adjustment are provided 1 Direct Entry reference Section 3 3 2 for direct entry method 2 Manual Adjustment reference Section 3 3 2 for manual adjustment method 3 Factory Defaults Pressing the asterisk lt gt key at either the master or slave screen will load the default discrimina
92. v A 12 0PARTS LISTS 12 1 SPARE PARTS ORDERING INFORMATION To facilitate the processing of spare parts orders the following information is required Product Number Product Serial Number TSA Stock number Part description from parts list When ordering PROM chips the software version is required This can be found on the PROM label NOTE Model number suffixes are generally not included in the text of the manual However the suffixes in the parts lists must be included on orders for spare parts FOR ASSISTANCE CALL TSA Systems Ltd 12 2 RECOMMENDED SPARE PARTS The list of spare parts given here is based on the following assumptions One that the maximum downtime allowable is 2 hours and two and that a technical background is not needed to perform the repairs Stock Qt SCHIDSOR Mfr Part Recommend a local supplier due to limited shelf lite He TUBE 2 x36 78148 6 _ TAMPERSWITCH This document is the exclusive property of TSA Systems Ltd 93 Unauthorized use or distribution is strictly prohibited SA imsy e Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 13 0LIST OF DRAWINGS Drawing Description IMSO PICO 2 eer ener rere eRe mre ner Tees Ronee Nene en Te Deere sant earner Toy te DU Oe Nee Le dfe l IM S50 Schematic Didra eier ET VE e a e p ta Umi a p d Uens 2 TMESSU Internal M Ie Wc ee pce ve en te viu ee ope ce tunt reditu eee dase ytd
93. vals should reflect the time a given point on a vehicle will be in the detection zone resulting in the maximum probability of detecting an alarm condition While the monitor 1s occupied it makes an alarm comparison every 200 milliseconds based on a rolling sum of the most recent n x 200 millisecond intervals Actually the monitor makes several alarm comparisons every 200 milli seconds depending on the Algorithm set up See Section 3 3 3 number 1 The intervals are stored continuously so that as soon as the monitor 1s occupied it waits for the current interval to end then sums the counts in the selected number of intervals and makes an alarm comparison This means that if the monitor is set to five intervals it is effectively starting to monitor the passage 1 second before the monitor has been occupied This is called look back The monitor will continue to make comparisons until the occupancy hold in time has expired after the end of the occupancy This is called look after The occupancy hold in forces the unit to continue to make alarm comparisons after the occupancy detector has cleared look after The amount of time selected for this parameter 1s based on the estimated speed of passage and pillar spacing This document is the exclusive property of TSA Systems Ltd 43 Unauthorized use or distribution is strictly prohibited TM 850 Operations and Service Manual Doc 5022 Rev A Gamma Background 5 secon
94. vary from site to site although several general principles apply in all cases l Select an appropriate source and instruct the driver or pedestrian to drive or walk at the normal speed used for monitoring 2 Repeat the test several times and record the sources and values used This document is the exclusive property of TSA Systems Ltd 12 Unauthorized use or distribution is strictly prohibited Systems Ltd TM 850 Operations and Service Manual Doc 5022 Rev A 7 2 5 Performance Verification Checklist Gamma Repairs made if any list component and type of repair System Alignment unchanged new values PARAMETERS Low Fault set to High Fault set to Alarm Comparison Interval set to Occupancy Hold in set to N Sigma set to Detectors Online FUNCTIONS Master LLD set to Master ULD set to Slave LLD set to Slave ULD set to Variance Test 1 2 3 4 Relay Output ADVANCE Algorithm set to Sum Background Time set to Firmware Version Background N Sigma set to Horizontal Vertical single Profiling Electronic Alignment Master Pillar SCA 774 HHV 448 Slave Pillar SCA 774 HHV 448 ____ System starts up and runs initial self test without errors All modes operational Background mode in operation area count Operational test list isotope and activity Performed by Date This document ts the exclusive property of TSA Systems Ltd 7
95. ystem History Using SC 770 Com s nnne 39 2E ub ea MC CMM RM M EE E 41 4 5 NEUTRON PARAMETERS 1 0 ee eecceeeccesecceseccsssssesseseuseseuseseusssenusssaussseuessuessusssuusssaues 42 4 5 1 Neutron Show Count ccccseccssescssscssssesssousssussseusseusssasssousssussseusssusssssseusssessseusssusesss 42 5 0 THEORY OF OPERA TION ccccecsecsesccsccsscseccessescccseccessesccccccesscssccescessessscesees 43 3 2 5 Vittlanece Analyzer Mode Gamina ONIY sies eue rep nta risiini 48 CeDo a aui cc C II P D ED 49 om M Bore evil nig nna cnn inion M e 49 BMNESUE CNEAMMTOePRe UCCKCCO 49 mS PPIOIMIDS o 50 6 1 3 The EI uid E ee et eee ee ee een me nS See rN ene 50 paises tegen edt cence leap sv i etnies agenesis 51 eee he Oe eer err e eee ee eer nee ee ee en ene eer ee EP 32 OMM Erin A ee eee eee ree Sen ee ante ee ee ee een eee ee eee eee 53 This document ts the exclusive property of TSA Systems Ltd Unauthorized use or distribution ts strictly prohibited m Emus e 5ystems Ltd TM 850 Operations and Service Manual Doc 4 5022 Rev A umque Se Rr ET M 56 BSIHIEBALLERSE Seer duisi Ri as M DD MICE RACE cnr erent nner d 6 4 NANO CONTROLLER ce 70 Tm a Cakal RASS LCUN ERTER DEB ua uiid meee teen een Te ne sh Latii coda pia fined 58 m habe Ee tud du E a 59 CAG AD Sea OR ree DELONNEC D aoscsatecidessn suc e eee

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