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921E - Ortec

1. PE RR Ce PR De RR A ee Rene eee 4 TROUBLESHOOTING Leurs beaten nels wai ase cet b tcr aie ac ee bes de er beta 7 3 1 Data or Settings Are Lost When Power Is Turned Off 7 di SPECIFICATIONS enisi d ate Led deat te que Satine ones drains E 9 ZI bront Panel Indicators cce ER oe eon ied Santee ee ea ee ne heat nee es 9 2 2 CC ODDeCtOLS4 eati de oie wb RB ps Megs Ohi Sb EE p e i dV Coe 9 2 3 Data Memory dete dye Ret NE VERREM SUE pP EM SE ae Oe I E eI 9 AA aeos au erbe botes title s anb A e E ed tab Ae Pope deti eee I 9 4 5 Interface Connectors Rear Panel RR RR RI RII 10 AO DC s No es mo le Ge ta tee 10 4 7 Controls Front Panel eceeeeeeeeeeee nn 11 4 8 Digital Spectrum 11 49 electnical and Mechanical dag dee 11 Battery Backup ho dasha dara a Lage QUE ear ha term 12 4 TT Beature Mask Bits c eeu eet Eee ia ide Rete A E eave bie ties b e 12 APPENDIX A FIRMWARE COMMANDS AND RESPONSES 15 AIL CONNECTIONS Ae E Bow hes Glas et Sd 15 ADs Command Rec tds duo ec Ay PESE EN 15 Percent Res
2. Connect the Model 921E to the rear panel ETHERNET connector using 50 coaxial cable Be certain that a BNC T connector and 50 Q terminator are at each end of the cable Power on the 921E To control multiple 921Es from a single PC via the Ethernet interface simply chain all 921Es together into a single LAN using BNC T connectors at each 921E Don t forget the 50 Q terminator required at the last 921E in the chain and at the PC The MCB Configuration program handles all the details of identifying each detector and allows you the option of modifying each one s identification string 2 2 Cabling Up a System The standard cabling of a Model 921E system is shown in Fig 1 If you have a detector that uses transistor reset preamplifier TRP that is a Plus model all connections shown should be made If using a resistive feedback preamplifier that is a detector without Plus model designation the 132 INHIBIT GENERATOR does not exist so do not make the connection to TRP INH 2 INSTALLATION Captive Cable Inhibit Output 132 INHIBIT GENERATOR Inhibit Input Preamp Power OUTPUT High Volts NOzxmz AJOU r cUO Bias Shutdown 659 973 921E BIAS SUPPLY AMP MCB REAR PANEL REAR PANEL REAR PANEL Figure 1 MERCURY Models 973U 921E System Interconnections Model 921E EtherNIM High Rate MCB 3 TROUBLESHOOTING 3 1 Data or
3. CR Width reported as 512 bytes maximum width SHOW WINDOW Reports the start channel and number of channels that are in the window of interest for the MCB in the form Dxxxxxyyyyyccc lt CR gt where xxxxx is the start channel 0 through 16383 and yyyyy is the number of channels 1 through 16384 See SET_WINDOW for more information about the window of interest Example Responses D0000016384094 lt CR gt Window of interest reported as starting at channel 0 and continuing for 16384 channels D0000008192092 lt CR gt Window of interest reported as starting at channel 0 and continuing for 8192 channels first 1 2 D08192081921E12 lt CR gt Window of interest reported as starting at channel 8192 and continuing for 8192 channels last 1 2 SHOW_ZERO_ADJUSTMENT Returns the current zero peak stabilization adjustment as a number from 0 to 4095 This value changes dynamically when zero stabilization is enabled See Appendix B for more information See also SET ZERO ADJUSTMENT and INITIALIZE ZERO STABILIZATION Responses C00000087 CR Zero adjust reported 0 or 50 00 mV C00001088 lt CR gt Zero adjust reported 1 or 49 98 mV C02047100 lt CR gt Zero adjust reported 2047 or 0 024 mV C02048101 lt CR gt Zero adjust reported 2048 or 0 0 mV C02049102 lt CR gt Zero adjust reported 2049 or 0 024 mV C04094104 lt CR gt Zero adjust reported 4094 or 49 98 mV C04095105 lt CR gt Zero adjust reported 4095 or 50 00 mV SHOW
4. Responses G0000000000075 lt CR gt Integral preset reported as 0 G4294967295132 lt CR gt Integral reported as 4294967295 SHOW_INTEGRAL_REMAINING Reports the current ROI integral remaining value For more information about the ROI integral remaining see SET_INTEGRAL_REMAINING See also SHOW_INTEGRAL Responses G0000000000075 lt CR gt Integral remaining reported as 0 G4294967295132 lt CR gt Integral reported as 4294967295 SHOW_LIVE Reports the contents of the live time counter for the MCB in units of 20 ms 50 ticks per second See also CLEAR COUNTERS SET LIVE Responses G0000000000075 lt CR gt Live time reported as 0 ticks G0000000001076 lt CR gt Live time reported as 1 tick 20 ms G4294967295132 lt CR gt Live time reported as 4294967295 ticks SHOW_LIVE_PRESET Reports the current live time preset for the MCB in units of 20 ms 50 ticks per second See also CLEAR_PRESETS and SET_LIVE_PRESET Responses G0000000000075 lt CR gt Live time preset reported as disabled G0000000001076 lt CR gt Live time preset reported as tick G4294967295132 lt CR gt Live time preset reported as 4294967295 ticks 41 Model 921E EtherNIM High Rate MCB SHOW_LIVE_REMAINING Reports the current live time remaining in units of 20 ms 50 ticks per second See also SET_LIVE_REMAINING Responses G0000000000075 lt CR gt Live time remaining reported as disabled G0000000001076 lt CR gt Live time remaining reported
5. SET_GAIN_CHANNEL and SHOW_GAIN_CHANNEL Execution Errors 131128085 lt CR gt The specified number of channels would create a peak that was less than the minimum 3 channel width or would be outside the MCB s range 131136084 lt CR gt The command was attempted while gain stabilization was enabled SET_GATE_ANTICOINCIDENT Causes the 921E to expect the ADC gate input signal in anticoincident mode See Section 4 2 for more information on the ADC GATE input See also SET_GATE_OFF SET_GATE_COINCIDENT and SHOW_GATE SET_GATE_COINCIDENT Causes the 921E to expect the ADC gate input signal in coincident mode See Section 4 2 for more information on the ADC GATE input See also SET_GATE_OFF SET_GATE_ANTICOINCIDENT and SHOW_GATE SET_GATE_OFF Causes the 921E to ignore the state of the ADC gate input signal See Section 4 2 for more information on the ADC GATE input See also SET_GATE_COINCIDENT SET_GATE_ANTICOINCIDENT and SHOW_GATE SET_INTEGRAL_PRESET count Sets the ROI integral preset for the MCB to the specified count During data acquisition when the sum of the counts contained in the channels of the MCB that have the ROI flag set reaches the integral preset count the preset is complete and the acquisition is stopped The actual number of counts in the ROI integral may exceed the preset value by up to 512 counts due to the pipelined architecture of the Model 921E Setting an integral preset to 0 counts disables the preset Th
6. SHOW_ADC_CONVERSION Debugging command that returns the most recent conversion from the ADC Returns 0 if no conversion is available See also SET_ADC_CONVERSION command Responses C00000087 CR No conversion available C00405096 lt CR gt 405 was the most recent conversion SHOW_ALARM Returns a record that indicated whether the alarm responses are enabled or disabled for a communication path If SHOW_ALARM is received on the serial line the response represents whether alarms are enabled for the serial line If SHOW_ALARM is received by the mailbox the response represents whether alarms are enabled for the mailbox Responses IT lt CR gt Alarms are enabled for the specified communication path SIF CR Alarms are disabled for the specified communication path SHOW CONFIGURATION Returns a record that indicates the hardware configuration of the MCB The record contains information about the number of segments in an MCB always one for the Model 921E and the current conversion gain for each segment The record is organized as follows J1638400001aaaaa00000 65 zeros here for total of 75 zeros 00000ccc where aaaaa represents the conversion gain for the one and only segment in the MCB and ccc represents the record checksum See Section A 2 for more information about response records and checksums SHOW CONFIGURATION MASK Returns two masks the first of which may be anded with data from the MCB to clear the ROI bit from the data
7. See also DISABLE ZERO STABILIZATION SHOW ZERO STABILIZATION and INITIALIZE ZERO STABILIZATION INITIALIZE Resets the Model 921E to initial conditions as though the following commands had been issued COMPUTER SET RADIX BINARY DISABLE GAIN STABILIZATION SET SEGMENT 1 DISABLE ZERO STABILIZATION SET WIDTH 512 SET DEVICE 1 SET WINDOW 0 16384 SET GAIN ADJUST 2048 SET ZERO ADJUST 2048 SET GAIN PRESET 10 SET ZERO PRESET 10 SET GATE OFF TEST 1 SET MODE POINT The following commands are issued for both Mailbox and Serial communication paths DISABLE ALARM ENABLE REMOTE The following commands are issued for the MCB CLEAR ALL SET GAIN CONVERSION 16384 STOP 23 Model 921E EtherNIM High Rate MCB In addition the INITIALIZE command resets all internal hardware and internally marks the stabilizer gain channel gain width zero channel and zero width as undefined After an INITIALIZE command the SET GAIN CHANNEL and SET GAIN WIDTH commands must be issued before gain stabilization can be enabled with the ENABLE GAIN STABILIZATION command Likewise the SET ZERO CHANNEL and SET ZERO WIDTH commands must be issued before zero stabilization can be enabled with the ENABLE ZERO STABILIZATION command Execution Errors The INITIALIZE command simulates a power down power up cycle for the MCB after a simulated loss of battery backed up memory Thus the 96 response record is the response from the TEST 1 command as listed above 00
8. When the second mask value is anded with data from the MCB the data bits are removed and only the ROI bit remains Response CONF MASK 02147483647 02147483648 SHOW CONFIGURATION UART Reports the baud rate parity option number of data bits and number of stop bits for the serial interface 36 APPENDIX A FIRMWARE COMMANDS AND RESPONSES Responses F09600N81 9600 baud No parity 8 data bits 1 stop bit 19200 82 19200 baud Even parity 8 data bits 2 stop bits F02400071 2400 baud Odd parity 7 data bits 1 stop bits SHOW DATA APPLICATION entry If entry matches entry from a previous SET DATA APPLICATION command the data from the SET DATA APPLICATION command is returned in a F record Execution Errors 131138085 Entry could not be matched SHOW_DATE Returns the day month and year of the current date as maintained in the 921E battery backed up real time clock in the form dddmmmyy The day is returned as a 3 digit integer number from 001 through 031 The month is returned as a 3 digit integer number from 001 through 012 And the year is returned as a 3 digit integer number from 000 through 099 See also SET_DATE_START Responses N001001088052 lt CR gt Date reported as Jan 1 1988 N031012009959 lt CR gt Date reported as Dec 31 1999 N001001000036 lt CR gt Date reported as Jan 1 2000 N031012008756 lt CR gt Date reported as Dec 31 2087 SHOW_DATE_START Returns the day month and year of the acq
9. failed selftest 005008082 lt CR gt Processor memory failed selftest 005010075 lt CR gt and processor memory failed selftest 20005012077 CR and processor memory failed selftest 270005014079 CR ROM2 and processor memory failed selftest 007002078 lt CR gt Battery backed up data lost and ROMI failed selftest 007004080 lt CR gt Battery backed up data lost and ROM2 failed selftest 007006082 lt CR gt Battery backed up data lost ROM1 and ROM2 failed selftest 007008084 lt CR gt Battery backed up data lost and processor memory failed selftest 007010077 lt CR gt Battery backed up data lost and processor memory failed selftest 20007012079 CR Battery backed up data lost ROM2 and processor memory failed selftest 007014081 lt CR gt Battery backed up data lost ROM1 ROM2 and processor memory failed selftest TEST command Results 004002075 lt CR gt ROM failed test 004004077 lt CR gt RON2 failed test 004008081 lt CR gt Processor Memory failed test 004016080 lt CR gt Spectral Data Memory or Mailbox Memory failed test 004032078 lt CR gt RESERVED 004064083 lt CR gt Serial Line failed test Note that the above responses can be combined to indicate a combination of errors such as 004006079 lt CR gt 004010074 lt CR gt and ROM 2 both failed test Processor Memory and ROM both failed test 17 Model 921E EtherNIM High Rate
10. Day can be any value from 1 to 31 Month can be any value from 1 through 12 Year can be any value from 0 through 99 The current date and time are stored for the MCB when an acquisition is started See also SHOW DATE SET TIME and SHOW TIME SET DATE day month year Sets the date stored in the battery backed up system clock to the specified values Day can be any value from 1 to 31 Month can be any value from 1 through 12 Year can be any value from 0 through 99 The current date and time are stored for the MCB when an acquisition is started See also SHOW DATE SET TIME and SHOW TIME SET DATE START day month year Sets the start date for the MCB to the specified values Normally the start date and time are set automatically whenever the MCB is started with the START command See also SHOW DATE START SET TIME START and SHOW TIME START SET DEBUG level Sets the debug level to level which must be between 0 and 255 Setting level to a non zero value causes debugging information to be transmitted to the serial port See also SHOW DEBUG SET DEVICE device Included for compatibility with other MCBs Only device number 1 is valid for a Model 921E Execution Errors 131128085 lt CR gt An invalid device number was given 27 Model 921E EtherNIM High Rate MCB SET_GAIN_ADJUSTMENT value Sets the gain stabilization adjustment to an arbitrary value from 0 to 4095 The total range of the adjustment value represents a 0 5 change in the
11. Example Responses N010054017052 lt CR gt Time returned 10 54 17 10 hours 54 min 17 sec N020013037050 lt CR gt Time returned 20 13 37 20 hours 13 min 37 sec SHOW_TIME_TRIGGER Responds with the time that the last valid trigger occurred either via the TRIGGER command or the Sample Ready input If no valid trigger has occurred since power up or if ENABLE_TRIGGER is sent followed by DISABLE_TRIGGER without a valid trigger the command returns all zeros Example Responses N000000000ccc CR No valid triggers have occurred N013011012ccc CR Trigger occurred at 1 11 12 p m SHOW TRIGGER Reports if the trigger is enabled or disabled See also ENABLE TRIGGER and DISABLE TRIGGER Responses IF lt CR gt Trigger disabled IT lt CR gt Trigger enabled SHOW_TRUE Reports the contents of the true time counter for the MCB in units of 20 ms 50 ticks per second See also CLEAR COUNTERS and SET TRUE Responses G0000000000075 lt CR gt True time reported as 0 ticks G0000000001076 lt CR gt True time reported as 1 tick 20 ms G4294967295132 lt CR gt True time reported as 4294967295 ticks over 23 000 days 47 Model 921E EtherNIM High Rate MCB SHOW_TRUE_PRESET Reports the current true time preset for the MCB in units of 20 ms 50 ticks per second See also CLEAR_PRESETS and SET_TRUE_PRESET Responses G0000000000075 lt CR gt True time preset reported as disabled G0000000001076 lt CR gt True time p
12. MCB Command Syntax Errors Communication Errors 129001082 lt CR gt 129002083 lt CR gt 129003084 lt CR gt 129004085 lt CR gt 129005086 lt CR gt 20129006087 CR 129007088 lt CR gt 129132087 lt CR gt 130001074 lt CR gt 130002075 lt CR gt 130003076 lt CR gt 9 130004077 lt gt 130005078 lt gt 9 130006079 lt gt 9 130007080 lt gt 9 130008081 lt gt 130128084 lt gt 9 130129085 lt gt 130131078 lt gt 270130132079 CR 130133080 Execution Errors 18 131128085 lt CR gt 131129086 lt CR gt 131130078 lt CR gt 9 131132080 lt gt 9 131134082 lt gt 131135083 lt CR gt 9 131136084 lt gt 9 131137085 lt CR gt Invalid command verb Invalid command noun Invalid command verb and noun Invalid command modifier Invalid command verb and modifier Invalid command noun and modifier Invalid command verb noun and modifier Invalid command verb noun and modifier valid but not together Serial line buffer overrun Serial line parity error Serial line buffer overrun and parity error Serial line framing error Serial line buffer overrun and framing error Serial line parity error and framing error Serial line buffer overrun parity error and framing error Serial line break detected Command checksum incorrect only when optional checksum provided Command or
13. Settings Are Lost When Power Is Turned Off The memory in the Model 921E has battery backup to maintain data when power is removed from the module It uses a lithium battery with a nominal voltage of 3 6 V specified in Section 4 10 To test the battery voltage remove the left side panel as viewed from the front The voltage can be measured at the battery cable connector near the top rear of the printed wiring board PWB The voltage measured between the outer two pins of the 3 pin connector should be gt 2 V If lt 2 V the battery needs be replaced to maintain battery back up To replace the battery locate the battery behind the top of the front panel Twist or pry it loose from the hook and loop fastener strip and unplug the wire connector Replace with the new battery placing a strip of paper temporarily between the battery and the hook and loop fastener strip may help in positioning the battery Model 921E EtherNIM High Rate MCB 4 SPECIFICATIONS 4 1 Front Panel Indicators uP BUSY Red busy rate LED intensity indicates the relative activity of the microprocessor STAB BUSY Red LED indicates when the stabilizer is active ADC BUSY Red busy rate LED flashes once for each pulse digitized by the ADC 4 2 Connectors INPUT Accepts positive unipolar positive gated integrator or positive leading bipolar analog pulses in the dynamic range from 0 to 10 V with a 12 V maximum semi Gaussian shaped or gated integrator shaped time
14. ZERO CHANNEL Reports the center channel for the stabilizer zero peak for the MCB See Appendix B for more information See also SET ZERO CHANNEL SET ZERO WIDTH and SHOW ZERO WIDTH 49 Model 921E EtherNIM High Rate MCB Responses C00000087 CR Zero channel has not been set C00002089 lt CR gt Zero channel is channel 2 lowest possible channel C16382107 lt CR gt Zero channel is channel 16382 highest possible channel SHOW_ZERO_PRESET Reports the Gauss mode stabilization preset for the zero peak The preset represents the minimum number of incremental counts that must be collected in any one channel of the zero peak before the zero offset is evaluated by the stabilizer and potentially adjusted See Appendix B for more information See also SET_ZERO_PRESET and CLEAR_PRESETS Responses G0000000010076 lt CR gt Zero preset currently 10 counts minimum G0000000011076 lt CR gt Zero preset currently 11 counts G2147483647121 lt CR gt Zero preset currently 2147483647 counts maximum SHOW_ZERO_STABILIZATION Reports the state of zero peak stabilization See Appendix B for more information See also ENABLE_ZERO_STABILIZATION and DISABLE_ZERO_STABILIZATION Responses IT lt CR gt Zero stabilization is currently enabled SIF CR Zero stabilization is currently disabled SHOW ZERO WIDTH Reports the current width for the stabilizer zero peak for the MCB See Appendix B for more information See also SET ZERO WIDT
15. as 1 tick G4294967295132 lt CR gt Live time remaining reported as 4294967295 ticks SHOW_MDA Returns the uncorrected MDA in gammas s by calculating the right half of the MDA equation see SET_MDA_COEF and returns that value Example Responses MDA 000000000000 85 MDA 0 85 SHOW_MDA_COEFFICIENTS Returns the coeffficients used for the MDA calculation See SET MDA COEFFICIENTS Example Responses MDA_COEF 000000000002 71 000000000000000 0000000000021 7 Coefficient a 2 71 b 0 and c 21 7 SHOW MDA PRESET Returns the current MDA preset setting Example Responses MDA 000000000000000 No preset MDA 0000000000008 5 Preset set to 8 5 SHOW_MODE This command is for compatibility with Model 918 systems It always reports that the 921E operates in PHA mode Responses FPHA lt CR gt SHOW_MODE_STAB Reports the current stabilization mode of operation See Appendix B for more information See also SET MODE POINT and SET MODE GAUSS Responses FPOINT lt CR gt FGAUSS lt CR gt 42 APPENDIX A FIRMWARE COMMANDS AND RESPONSES SHOW_NETWORK_ADDRESS Returns in a H record the Ethernet address used by the 83905 Ethernet chip The address is composed of a 32 bit company portion of the address which is usually set to the ORTEC ID 41020 followed by the address portion See also SET NETWORK ADDRESS Responses H00000410200000000016058 Company ID 41020 Address 16 SHOW_NETWORK_ID Responds with a F record indicatin
16. automatically locate the driver If the wizard cannot locate the driver direct it to C Program Files Common Files ORTEC Shared UMCBI e Ethernet interface Connect to either the PC s LAN card or to a powered Ethernet hub This connection method does not open a Windows found new hardware wizard Run the MCB Configuration program to build the list of available detectors according to the MAESTRO User s Manual DPM USB users note The 921E DPM USB combination you have just created is treated as a distinct entity by MCB Configuration If you disconnect this 921E from the system then Model 921E EtherNIM High Rate MCB reconnect via a different DPM USB converter you will have to re run the MCB Configuration program to reestablish communication between the 921E s inputs and ORTEC CONNECTIONS 32 software applications You are now ready to start MAESTRO 32 and use its Acquire MCB Properties dialog and the 921E s front panel controls to set the data acquisition parameters for each input 2 1 Ethernet Connection Not Supported by Vista This option requires a PC running under Windows 2000 Professional SP4 or Windows XP Professional SP2 or higher and any Ethernet card that supports IOBASE2 Referring to the accompanying ORTEC MCB CONNECTIONS 32 Hardware Property Dialogs Manual P N 931001 supplied either as hardcopy or in the Manuals folder on the installation disk set the PC s network protocol to IPX SPX Compatible
17. constants from 0 25 to 30 us or delay line shaped with width gt 0 25 us Z gt 1 dc coupled No internal delay BNC connectors on front and rear panels ADC GATE Optional slow positive NIM input Computer selectable coincidence or anti coincidence Signal must occur prior to and extend 0 5 us beyond peak detect Front panel BNC connector The ADC GATE has no effect on the live time correction circuitry PUR Pileup Rejector Rear panel BNC connector accepts slow positive NIM signal Signal must occur before ADC peak detect Z gt 1 BUSY Busy input used by live time correction circuits Accepts slow positive NIM signal Zi gt 1 kO BNC connector on rear panel CNG SMPL Change Sample TTL output signal software addressable on rear panel BNC SMPL RDY Sample Ready TTL input signal software readable on rear panel BNC 4 3 Data Memory 16k channels of nonvolatile data memory 2 1 over 2 billion counts per channel 4 4 Presets Real Time Live Time Selectable in multiples of 20 ms Region of Interest Peak Peak count Model 921E EtherNIM High Rate MCB Region of Interest Integral Integral count selectable to a maximum value of 27 1 over 4 billion Data Overflow Terminates acquisition when data any channel exceeds 2 1 over 2 billion counts Statistical Allows setting the required statistical accuracy on a key peak for example stop counting when the activity of is known to be better th
18. if any the gain and or offset must be adjusted to keep the gain and or zero peaks in their nominal position When in Gauss Mode setup is very similar to Point Mode except a few more pieces of information are required The information required are the peak presets for the gain and zero peak These values specify the value which any channel in the window must reach before a correction is made 56
19. lithium 3 6 V ORTEC P N 739460 4 11 Feature Mask Bits The following table describes the feature bits from the SHOW_FEATURES command discussed on page 39 If the feature is supported in the Model 921E the bit will be set to 1 if the feature is not supported the bit will be 0 ua d a dfc e ce xm O oO WON HWA nN PWN N Meaning Software selectable conversion gain Software selectable coarse gain Software selectable fine gain Gain stabilizer Zero stabilizer PHA mode functions available MCS mode functions available List mode functions available Sample mode functions available Digital Offset e g 920 Software selectable Fine Offset e g DART HV power supply Enhanced HV SET_HV SET SHOW_HV_POL SHOW_HV_ACT Software selectable HV range ENA NAL DIS NAI Auto PZ START PZ AUTO Software selectable manual PZ SET SHOW PZ Internal clock SHOW DATE TIME SHOW DATE TIME START Sample Changer support SET SHOW OUTPUT SHOW INPUT One button acquisition ENA DIS SHOW TRIG SPEC MOVE Nomadic likely to move between opens Local app data SET DATA APP SHOW DATA APP Bit 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 4l 42 43 44 45 46 47 48 49 50 5 52 APPENDIX C FEATURE MASK BITS Meaning Software retrievable serial number Power management commands Battery status support Software selectable AMP p
20. presets are all set to zero disabled for the MCB see SET DEVICE command Execution Errors 131135083 lt CR gt The command was attempted while spectrum acquisition was in progress No action was taken CLEAR_ROI The region of interest flags for the channels in the window of interest see SET_WINDOW command in the MCB see SET_DEVICE command are cleared Execution Errors 131135083 lt CR gt The command was attempted while spectrum acquisition was in progress No action was taken 20 APPENDIX A FIRMWARE COMMANDS AND RESPONSES CLOSE FILE filename Completes download of file to RAM Disk in the MCB See OPEN FILE and WRITE FILE This command may also be used to terminate a download to the FLASH without reprogramming the FLASH CLOSE FILE FLASH crc Completes download of FLASH data crc is the CRC checksum of the data which was downloaded See OPEN FILE FLASH and WRITE FILE FLASH Execution Errors 131132080 lt CR gt Invalid number of command parameters COMPUTER Prepares the serial line for communication with a computer In computer mode text sent to the 921E does not echo back to the host and response records sent to the host by the 921E are terminated only with a carriage return no accompanying line feed This command has no effect when sent via the mailbox See also TERMINAL DELETE FILE filename ext Removes the specified file from the RAM Disk This is not normally used Execution Errors 131128
21. separated by commas which specify numeric quantities related to the operation of the MCB such as live time or conversion gain The command SET_WINDOW 0 16384 has two parameters 0 and 16384 which set the window of interest to start at channel 0 and continue for 16384 channels 15 Model 921E EtherNIM High Rate MCB Some parameters listed in the command dictionary are considered optional and are distinguished from mandatory parameters by being surrounded by brackets in the command prototype line e g SET WINDOW start length Commands that have optional parameters may be sent to the MCB without the optional parameters in which case the behavior will be changed as explained in the command description An optional checksum can be added to the end of any command sent to an MCB The checksum is a 1 byte unsigned integer sum of all of the characters in a command treated as unsigned integers up to and including the comma or space s that separates the checksum from the command The checksum simply appears as an extra parameter added to the end of the command parameter list For commands that do not normally have parameters the checksum appears as the only parameter separated from the header by one or more spaces All optional parameters must be included in a command if a checksum is to be provided so that the checksum is not mistaken by the MCB as a parameter For example the SET WINDOW command must include the two optional parameters start
22. to 4095 The total range of the adjustment value represents a 50 mV change in the signal offset with a value of 2048 representing unity offset This adjustment is usually only made by the gain stabilizer and reset to unity with the INITIALIZE_ZERO_STABILIZATION command See Appendix B for more information See also SHOW_ZERO_ADJUSTMENT SET_ZERO_CHANNEL chan 34 Sets the center channel for the stabilizer zero peak for the Model 921E If a zero channel is chosen such that the beginning channel or ending channel would be below channel 0 or above the maximum channel as determined by the conversion gain the zero peak width is reduced until the peak fits the MCB s boundaries A zero channel and width must be set before zero stabilization can be enabled see ENABLE_ZERO_STABILIZATION See Appendix B for more information APPENDIX A FIRMWARE COMMANDS AND RESPONSES Execution Errors 131128085 lt CR gt The specified channel number would create a peak that was less than the minimum 3 channel width or would be outside the MCB s range 131136084 lt CR gt The command was attempted while zero stabilization was enabled SET_ZERO_PRESET count Sets the Gauss mode stabilization preset for the zero peak The preset represents the minimum number of incremental counts that must be collected in any one channel of the zero peak before the zero offset 15 evaluated by the stabilizer and potentially adjusted See Appendix B for more informati
23. trigger that was enabled by the ENABLE_TRIGGER command See TRIGGER ENABLE_TRIGGER and SHOW_TRIGGER DISABLE_ZERO_STABILIZATION Stops stabilization of the zero peak while data is being acquired The zero stabilization adjustment is held at its current value until either zero stabilization is reenabled with the ENABLE ZERO STABILIZATION command or reinitialized with the INITIALIZE __ ZERO_STABILIZATION SET_ZERO_CHANNEL or SET_ZERO_WIDTH commands See Appendix B for more information See also SHOW_ZERO_STABILIZATION ENABLE_ALARM Begins the transmission of alarm responses E records when an input stops counting A E response record will be transmitted only when no host commands are being processed after a response from a previous command and before another ckmmand is sent Alarm responses are enabled for the serial line and the mailbox communication paths independently If the command is sent to the MCB via the mailbox then alarms will be sent to the mailbox If the command is sent via the serial line then alarms will be sent via the serial line Alarms can be enabled for both communication paths at the same time See also DISABLE ALARM and SHOW ALARM ENABLE GAIN STABILIZATION Enables the stabilization of the gain peak by the previously selected method either Gauss mode or point mode see SET MODE GAUSS and SET MODE POINT See Appendix B for more information See also DISABLE GAIN STABILIZATION SHOW GAIN STABILIZATION and INI
24. typical Gain Instability x50 ppm C Dead time Correction Extended live time correction according to the Gedcke Hale method 4 7 Controls Front Panel ADC LLD Screwdriver potentiometer adjust lower level discriminator from 0 10 full scale ADC ZERO Screwdriver potentiometer adjusts ADC zero offset 250 mV 4 8 Digital Spectrum Stabilizer ADC Data Word Size 14 bits 16k channels maximum Stabilization Peak centroid zero and gain channel 2 to 16384 stabilization window width zero and gain from 1 to 256 channels Correction Resolution At 16k ADC resolution 0 04 channels for gain 0 08 channels for Zero Setup Enable Disable From computer 4 9 Electrical and Mechanical Dimensions NIM standard two wide 6 90 x 22 13 cm 2 70 x 8 714 in front panel per DOE ER 0457T Weight Net 2 25 kg 5 Ib Shipping 3 1 kg 7 Ib Power Requirements 24 V 160 mA 24 V 240 mA 12 V 900 mA 12 V 260mA 6 V 1 0 A An ORTEC Model 4001 A 4002D NIM Bin Power Supply is recommended for up to five Model 921E units The ORTEC Model 495 Power Supply is available for NIM bins that do not have 6 V power Ron Jenkins R W Gould and Dale Gedcke Quantitative X Ray Spectrometry New York Marcel Dekker Inc 1981 pp 266 267 11 Model 921E EtherNIM High Rate MCB 4 10 Battery Backup The memory in the Model 921E has battery backup to maintain data when power is removed from the module Battery High energy
25. 085 lt CR gt Filename required 131137085 lt CR gt Hardware failure DISABLE_ALARM Ends the transmission of alarm responses when the MCB stops counting Alarm responses are disabled for the serial line and the mailbox communication paths independently See also ENABLE_ALARM and SHOW_ALARM DISABLE_GAIN_STABILIZATION Stops stabilization of the gain peak while data is being acquired The gain stabilization adjustment is held at its current value until either gain stabilization is reenabled with the ENABLE GAIN STABILIZATION command or reinitialized with the INITIALIZE _ GAIN_STABILIZATION SET_GAIN_PEAK or SET_GAIN_WIDTH command See Appendix B for more information See also SHOW_GAIN_STABILIZATION DISABLE OVERFLOW PRESET Disables the overflow preset for the MCB Channels that receive a count when they contain 2147483647 counts the maximum number of counts will roll over to zero counts if the overflow preset is disabled See also ENABLE OVERFLOW PRESET and SHOW OVERFLOW PRESET 21 Model 921E EtherNIM High Rate MCB DISABLE_REMOTE Disables the recognition of commands on the alternate communication paths If this command is sent to the Model 921E via the mailbox communication path it disables command recognition on the serial path If this command is sent via the serial path it disables command recognition on the mailbox communication path See also ENABLE_REMOTE and SHOW_REMOTE DISABLE_TRIGGER Disables the data acquisition
26. 096 8192 16384 LIST_GATE Returns a string that lists the legal gate settings Example Response GATE OFF COINCIDENT ANTICOINCIDENT LIST_ZERO_ADJUST Returns a string that gives the minimum and maximum values of the zero stabilizer settings in real world values and DAC values DAC values are appropriate for the SET_ZERO_ADJUSTMENT command Example Response 100 100 0 4095 Zero is 100 of the allowable range and 4095 is 100 2048 is 0 or no adjustment OPEN FILE filename ext A filename is needed to open a file Begins the download of a file to the RAM Disk by opening filename ext on the RAM Disk See WRITE FILE and CLOSE FILE OPEN FILE FLASH Begins the download of a new FLASH ROM DISK This command removes all files on the RAM Disk except autoexec bat and ini83905 exe to make room for ROMDISK ABS It also stops all acquisitions which are in progress See WRITE FILE FLASH and CLOSE FLASH PAUSE INPUT input num Waits for the next transition on the Sample Ready input or the beginning of the next command before responding with a response record If input num is present it must be 0 This parameter is provided for compatibility with other ORTEC modules Responses 20000000069 CR Transition on Sample Ready input occurred 130131041 lt CR gt Command was aborted by beginning of next command PAUSE INPUT HIGH input num Waits for a high level to be detected on the Sample Ready input or for the beginning of th
27. 3000072 lt CR gt MCB Power up occurred Memory lost No selftest errors normal response for INITIALIZE command 007002078 lt CR gt All of above but selftest failed ROMI failed 007004080 lt CR gt All of above but failed 007006082 lt CR gt All of the above but and ROM2 both failed selftest INITIALIZE_GAIN_STABILIZATION Resets the gain peak stabilization adjustment to unity no adjustment This value is reported as 2048 by the SHOW_GAIN_ADJUSTMENT command See Appendix B for more information See also SET_GAIN_ADJUSTMENT ENABLE_GAIN_STABILIZATION and DISABLE_GAIN_STABILIZATION INITIALIZE_ZERO_STABILIZATION Resets the zero peak stabilization adjustment po unity no adjustment This value is reported as 2048 by the SHOW_ZERO_ADJUSTMENT command See Appendix B for more information See also SET_ZERO_ADJUSTMENT ENABLE_ZERO_STABILIZATION and DISABLE_ZERO_STABILIZATION LIST_GAIN_ADJUST 24 Returns a string that gives the minimum and maximum values of the gain stabilizer settings in real world values and DAC values DAC values are appropriate for the SET_GAIN_ADJUSTMENT command Example Response 100 100 0 4095 Zero is 100 of the allowable range and 4095 is 100 2048 is 0 or no adjustment APPENDIX A FIRMWARE COMMANDS AND RESPONSES LIST_GAIN_CONVERSION Returns a string that enumerates each legal conversion gain setting separated by a space Example Response GAIN_CONV 512 1024 2048 4
28. 50078 CR First ROI group starts at channel 1000 and is 50 channels long D0215000150086 CR First ROI group starts at channel 2150 and is 150 channels long D0000000000072 CR No ROI groups to report SHOW ROI MDA Reports the start channel and number of channels used in the MDA preset calculation Example Response D0700000050ccc Calculation is performed on channels 7000 7049 SHOW ROI UNCERTAINTY Reports the start channel and number of channels used in the uncertainty preset calculation See also SET ROI UNCERTAINTY Response D0700000050ccc Calculation is performed on channels 7000 7049 45 Model 921E EtherNIM High Rate MCB SHOW_SEGMENT This command is for compatibility with other ORTEC MCBs It reports the last value that was set with the SET SEGMENT command Segments have no meaning in 921E MCBs Responses A001246 lt CR gt Segment last set to 1 A002247 lt CR gt Segment last set to 2 A016252 lt CR gt Segment last set to 16 SHOW_SNUM Responds with a F record indicating the serial number of the MCB See SET SNUM Responses F100 Serial Number 100 SHOW_STATUS Returns system status information in the following format Milililiilittttttttttaaaaahhhhhccc CR where HHI represents the live time as returned by the SHOW LIVE command tttttttttt represents the true time for the MCB as returned by the SHOW TRUE command aaaaa represents the active device mask as returned by the SHOW ACTIVE DEVICE
29. E SET DATE SHOW DATE SET TIME START and SHOW TIME START Execution Errors 131137085 lt CR gt The time could not be set due to a hardware malfunction Hardware service may be required SET_TIME_START hour min sec Sets the start time for the MCB to the specified values Normally the start date and time are set automatically whenever the MCB is started with the START command See also SHOW_TIME_START SET_DATE_START SHOW_DATE_START SET_DATE and SET_TIME SET_TRUE ticks Sets the true time counter for the MCB to the specified number of ticks The number represents true time in units of 20 ms 50 ticks per second Normally this value is set by the Model 921E during data acquisition See also CLEAR_COUNTERS and SHOW_TRUE Execution Errors 131135083 lt CR gt The command was attempted while spectrum acquisition was in progress No action was taken SET_TRUE_PRESET ticks Sets the true time preset for the MCB to the specified number of ticks During data acquisition when the true time counter reaches the preset number of ticks the preset is complete and the acquisition is stopped Setting a true time preset to 0 ticks disables the preset See also CLEAR_PRESETS and SHOW TRUE PRESET Execution Errors 131135083 lt CR gt The command was attempted while spectrum acquisition was in progress No action was taken SET_UNCERTAINTY_PRESET percent Sets the uncertainty preset to the specified value in percent percent is a floating po
30. ET SHO VERI LIST GAIN FINE Software enabled Pile up Rejector ENA DIS SHO PUR SET WIDT REJ Alpha style HV power SHOW HV CURRENT Software readable vacuum SHOW VACUUM Acquisition alarms ENA DIS ALARM Hardware acquisition trigger ENA DIS TRIG Ordinal shaping times SET SHAP 0 SET SHAP 1 Query gain ranges LIST VERI GAIN FINE CONV Routable inputs SET SHOW INPUT ROUTE External dwell support ENA DIS DWELL EXT Selectable SUM or REPLACE MCS modes ENA DIS SUM External Start support ENA DIS SHO START EXT Explorable MCS LIST SOURCE LIST LLSCA amp LIST ULSCA Device support the MDA preset DSPEC and 92X II Software selectable ADC type Matchmaker Has ability to daisy chain MCBs DART Extended feature mask available SH FEAT EXT APPENDIX A FIRMWARE COMMANDS AND RESPONSES Software communication with the 921E takes place through the CONNECTIONS 32 software layer CONNECTIONS 32 is used by all ORTEC software and is available for other software development with our CONNECTIONS 32 Programmer s Toolkit with Microsoft ActiveX Controls A11 B32 A 1 CONNECTIONS 32 In CONNECTIONS 32 the communication consists of sending command records to the MCB API and receiving response records from the MCB API Both command and response records consist of a sequence of printable ASCII characters followed by an ASCII carriage return The single exception to this rule is the B response reco
31. GAIN_ADJUSTMENT Returns the current gain peak stabilization adjustment as a number from 0 to 4096 This value changes dynamically when gain stabilization is enabled See Appendix B for more information See also SET GAIN ADJUSTMENT Responses C00000087 lt CR gt Gain adjustment reported as 0 4997 1 96 C00001088 lt CR gt Gain adjustment reported as 1 49947 C02047100 lt CR gt Gain adjustment reported as 2047 000244 C02048101 lt CR gt Gain adjustment reported as 2048 0 0 C02049102 lt CR gt Gain adjustment reported as 2049 000244 C04094104 lt CR gt Gain adjustment reported as 4094 49947 C04095105 lt CR gt Gain adjustment reported as 4095 49971 SHOW_GAIN_CHANNEL Reports the current center channel for the stabilizer gain peak for the MCB See Appendix B for more information See also SET GAIN CHANNEL Responses C00000087 CR Gain channel has not been set C00002089 lt CR gt Gain channel is channel 2 lowest possible channel C16382107 lt CR gt Gain channel is channel 16382 highest possible channel SHOW_GAIN_CONVERSION This command returns the conversion gain for the MCB Responses C00512095 lt CR gt Conversion gain reported as 512 channels C01024094 lt CR gt Conversion gain reported as 1024 channels C02048101 lt CR gt Conversion gain reported as 2048 channels C04096106 lt CR gt Conversion gain reported as 4096 channels C081921E07 lt CR gt Conversion gain report
32. H SET ZERO CHANNEL and SHOW ZERO CHANNEL Responses C00001088 lt CR gt Zero width has not been set C00003089 lt CR gt Zero width is 3 channels lowest possible width C00256100 lt CR gt Zero width is 256 channels highest possible width in Gauss mode C16383108 lt CR gt Zero width is 16383 channels highest possible width in point mode with zero channel set to 8192 START seg mask 50 Starts the acquisition of spectral data in the MCB The optional segment mask is provided for compatibility with other MCBs and can be any value from 0 to 65535 but is ignored by the Model 921E Execution Warnings 000005074 lt CR gt The acquisition is already started no changes made 000006075 lt CR gt A preset was exceeded acquisition was not started APPENDIX A FIRMWARE COMMANDS AND RESPONSES STEP_OUTPUT 0 Causes a pulse to be output on the Change Sample output port The level of the Change Sample output is changed then returned to the level present when the STEP_OUTPUT command is received The duration of the intermediate level varies but is never less than 2 us Use the SET_OUTPUT_HIGH or SET_OUTPUT_LOW commands to establish an initial output level Responses C00000087 lt CR gt The initial and final level on Change Sample was low C00001088 lt CR gt The initial and final level on Change Sample was high STOP seg mask Stops the acquisition of spectral data in the MCB The optional segment mask is provid
33. ORTEC Model 921E EtherNIM High Rate Multichannel Buffer Hardware Manual Printed in U S A ORTEC Part No 777610 0110 Manual Revision F Advanced Measurement Technology Inc a k a ORTEC a subsidiary of AMETEK Inc WARRANTY ORTEC warrants that the items will be delivered free from defects in material or workmanship ORTEC makes no other warranties express or implied and specifically NO WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ORTEC s exclusive liability is limited to repairing or replacing at ORTEC s option items found by ORTEC to be defective in workmanship or materials within one year from the date of delivery ORTEC s liability on any claim of any kind including negligence loss or damages arising out of connected with or from the performance or breach thereof or from the manufacture sale delivery resale repair or use of any item or services covered by this agreement or purchase order shall in no case exceed the price allocable to the item or service furnished or any part thereof that gives rise to the claim In the event ORTEC fails to manufacture or deliver items called for in this agreement or purchase order ORTEC s exclusive liability and buyer s exclusive remedy shall be release of the buyer from the obligation to pay the purchase price In no event shall ORTEC be liable for special or consequential damages Quality Control Before being approved for shipment each ORTEC instru
34. S command and hhhhh represents the hardware status which is an ASCII representation of a 16 bit decimal number with the following bit definitions Bit 0 LSB Bias Supply Polarity O positive 1 negative Bit 1 Bias Supply Overload O overload 1 normal Bit 2 High Voltage Enabled O disabled 1 enabled Bit 3 Unused Bit 4 Amplifier pole zeroed since initialization O normal 1 needs pole zeroing Bits 5 7 Unused Bit 8 Amplifier Automatic Pole Zero 1 Auto Pole Zero in progress 0 normal Bits 9 14 Unused Bit 15 MSB Reserved SHOW_TIME Reports the time from the battery backed up system clock in the form Nhhhmmmsssccc lt CR gt where hhh represents a 3 digit integer hour 0 through 23 mmm represents a 3 digit integer minute 0 through 59 and sss represents a 3 digit integer second 0 through 59 See also SET TIME SET DATE and SHOW DATE 46 APPENDIX A FIRMWARE COMMANDS AND RESPONSES Example Responses N010054017052 lt CR gt Time returned 10 54 17 10 hours 54 min 17 sec N020013037050 lt CR gt Time returned 20 13 37 20 hours 13 min 37 sec SHOW_TIME_START Reports the time of the last START command for the MCB in the form Nhhhmmmsssccc lt CR gt where hhh represents a 3 digit integer hour 0 through 23 mmm represents a 3 digit integer minute 0 through 59 and sss represents a 3 digit integer second 0 through 59 See also SET TIME START SET DATE START and SHOW DATE START
35. TIALIZE GAIN STABILIZATION ENABLE OVERFLOW PRESET 22 Enables the overflow preset for the MCB Channels that receive a count when they contain 2147483647 counts the maximum number of counts will stop the acquisition for that channel if the overflow preset is disabled The channel that caused the preset to complete will contain 214783647 counts An alarm response record will be sent to the host if alarms APPENDIX A FIRMWARE COMMANDS AND RESPONSES are enabled for the MCB whose acquisition is stopped see ENABLE_ALARM command See also DISABLE_OVERFLOW_PRESET and SHOW_OVERFLOW_PRESET commands ENABLE_REMOTE Enables the recognition of commands on the alternate communication path If this command is sent to the Model 921E via the mailbox it enables command recognition on the serial line If this command is sent via the serial line it enables command recognition in the mailbox ENABLE TRIGGER Prepares for the start of data acquisition but does not actually start acquisition After the successful execution of this command the MCB is armed for data acquisition While the MCB is armed it will report that it is active SHOW ACTIVE The acquisition may be started by an edge on the SAMPLE READY connector or by the TRIGGER command ENABLE ZERO STABILIZATION Enables the stabilization of the zero peak by the previously selected method either Gauss mode or point mode see SET MODE GAUSS and SET MODE POINT See Appendix B for more information
36. WRITE handshake record too long WRITE command aborted by HA handshake WRITE command aborted by timeout WRITE command aborted by invalid handshake Invalid 1st command parameter Invalid 2nd command parameter Invalid 3rd command parameter Invalid number of command parameters Invalid device or segment selected Command not allowed while acquisition in progress Command not allowed in current mode of operation Hardware failure detected while processing command APPENDIX A FIRMWARE COMMANDS AND RESPONSES A 4 Dollar Response Records SHOW and STEP commands respond with a single dollar response record followed immediately by a percent response record All valid dollar response records for each command are listed in the command dictionary The following table lists the general form of each dollar response record for a Model 921E In this table lower case letters represent numeric values The letters ccc always represent an 8 bit unsigned checksum of all characters on the record up to but not including the checksum characters and lt CR gt represents the ASCII carriage return character Axxxccce lt CR gt xxx is a single 8 bit unsigned number Cxxxxxccc lt CR gt is a single 16 bit unsigned number Dxxxxxyyyyyccc lt CR gt xxxxx and yyyyy are 16 bit unsigned numbers Exxxxxccc lt CR gt xxxxx is a single 16 bit alarm mask Fssss CR 5555 15 a variable length ASCII character sequence no checks
37. an 5 MDA Stops data collection when the value of the minimum detectable activity MDA for a user specified MDA nuclide reaches the needed value The MDA preset is implemented in the hardware The formula for the MDA can be represented as follows MDA Eff Yield 2 bte Counts Live time The MDA value is calculated in the MCB given the constants a b and c Counts is the gross counts in the specified region and Live time is the live time The constants a b and c and the total left hand factor expected value are loaded into the MCB by the user The calculated value right hand side is compared with the expected value and when it is lower acquisition is stopped 4 5 Interface Connectors Rear Panel DUAL PORT MEMORY ORTEC dual port interface 37 pin D connector RS232C Standard serial male RS 232 C 25 pin wired as DTE to run at 38 4k baud maximum with modem control For diagnostics ETHERNET Rear panel BNC connector accepts IEEE 802 3 IOBASE2 thin wire coax 4 6 ADC Successive approximation ADC with sliding scale linearization 16 000 channel resolution software selectable as 16k 8k 4k 2k 1k and 512 channels Dead Time per Event 1 5 us including memory transfer measured at 5 us shaping with ORTEC Model 973 High Rate Spectroscopy Amplifier at 100 000 counts sec input count rate Integral Nonlinearity lt 0 025 over 99 dynamic range 10 4 SPECIFICATIONS Differential Nonlinearity lt 1
38. and length if the checksum is provided e g SET WINDOW 0 16384 2009 A 3 Percent Response Records Model 921E MCBs respond to all commands with a percent response record that signifies the completion of the command Percent response records contain two error code numbers and a 1 byte checksum as follows 9oaaabbbccc CR where 46 represents the ASCII 46 character aaa represents the macro error code bbb represents the micro error code ccc represents the checksum and CR represents the ASCII carriage return character signifying the end of the record The macro error code represents the general class of error with 0 meaning no error and the micro error code represents the sub class of error with 0 meaning no error The following table lists all percent responses for a Model 921E Unconditional Success 20000000069 CR No errors detected Command executed as specified START and STOP Warnings 000005074 lt CR gt Device already started or stopped The START or STOP command was ignored 000006075 lt CR gt Device preset already exceeded The START command was ignored 16 APPENDIX A FIRMWARE COMMANDS AND RESPONSES Power Up Alert Power up just occurred and the selftest results are 001000070 lt CR gt All power up selftest passed 003000072 lt CR gt Battery backed up data lost 005002076 lt CR gt ROM1 failed selftest 005004078 lt CR gt 2 failed selftest 005006080 lt CR gt and
39. channels SET GAIN CONVERSION 1024 CR Conversion gain set to 1024 channels SET GAIN CONVERSION 2048 CR Conversion gain set to 2048 channels SET GAIN CONVERSION 4096 lt CR gt Conversion gain set to 4096 channels SET GAIN CONVERSION 8192 lt CR gt Conversion gain set to 8192 channels SET GAIN CONVERSION 16384 CR Conversion gain set to 16384 channels SET GAIN PRESET count Sets the Gauss mode stabilization preset for the gain peak The preset represents the minimum number of incremental counts that must be collected in any one channel of the gain peak before the gain is evaluated by the stabilizer and potentially adjusted See Appendix B for more information See also SHOW GAIN PRESET 28 APPENDIX A FIRMWARE COMMANDS AND RESPONSES SET_GAIN_WIDTH chans Sets the width in channels for the stabilizer gain peak for the MCB The gain width must be chosen such that the beginning channel is no lower than channel 0 and the ending channel is no higher than the maximum channel as determined by the conversion gain The gain channel and width must be set before gain stabilization can be enabled The absolute minimum width for the gain peak is 3 channels and the absolute maximum width for the gain peak 1s 256 channels in Gauss mode In point mode there is no maximum peak width though the chosen width must allow the peak to fit within the MCB s channel limits as stated above See Appendix B for more information See also SHOW_GAIN_WIDTH
40. channels highest possible width in point mode with gain channel set to 8192 SHOW_GATE Reports the current mode of operation of the ADC gate input See Section 4 2 for more information on the ADC GATE input See also SET_GATE_OFF SET_GATE_COINCIDENT and SET_GATE_ANTICOINCIDENT Responses FOFF lt CR gt Reports the ADC gate is off or ignored FCOI lt CR gt Reports the ADC gate is in coincident mode FANT lt CR gt Reports the ADC gate is in anticoincident mode SHOW_INPUT 0 40 Reports the state of the Sample Ready input See also PAUSE_INPUT PAUSE_INPUT_HIGH and PAUSE_INPUT_LOW Responses C00000087 lt CR gt Sample Ready input is low C00001088 lt CR gt Sample Ready input is high APPENDIX A FIRMWARE COMMANDS AND RESPONSES SHOW INTEGRAL start chan number of chans Reports the sum of the specified group of spectral data channels for the MCB If start chan and number of chans 15 not provided SHOW INTEGRAL reports the sum of all channels in the currently selected segment that have their ROI flag set Responses G0000000000075 lt CR gt Integral reported as 0 G4294967294131 lt CR gt Integral reported as 4294967294 G4294967295132 lt CR gt Integral reported as greater than or equal to 4294967295 maximum reportable value SHOW_INTEGRAL_PRESET Reports the current ROI integral preset value for the MCB See SET_INTEGRAL_PRESET for more information about the ROI integral preset See also SHOW_INTEGRAL
41. cord The number of channels that are sent on a binary data record depends on the record width as set by the SET WIDTH command and the number of channels remaining in the window of interest to be sent If the record is the last record to be sent it will contain the number of channels remaining in the window of interest This may or may not be the same number of channels as the previous record s If the record is not the last record to be sent it will contain as many channels as will fit without creating a binary data record that is longer than the limit set by the SET WIDTH command The following formula can be used to determine the number of channels that will be sent on a record that isn t the last record CHANS WIDTH 8 4 APPENDIX A FIRMWARE COMMANDS AND RESPONSES In the above formula CHANS is the integer number of channels that will be sent on the record and WIDTH is the current record width as set by the SET_WIDTH command maximum value is 512 bytes WRITE FILE aabbccddeeff Writes a block of data to the file which was opened with the FILE command Each byte of data is encoded as a two hexadecimal character In the example above 5 bytes are sent Multiple WRITE FILE commands can be used to send a long file to the MCB WRITE FILE FLASH aabbccddeeff Writes a block of data to be written to the flash memory beginning with the first byte in the flash memory The OPEN FILE FLASH command must be set before using this com
42. culation is performed once per minute SET_MDA_PRESET preset Sets the MDA preset to the specified value The preset is the product of the desired MDA the efficiency and the yield 30 APPENDIX A FIRMWARE COMMANDS AND RESPONSES SET_MODE_GAUSS Sets the method of stabilization for both gain and zero stabilization peaks to Gauss mode The maximum peak width is 256 channels in Gauss mode so that either the gain or zero or both peak s can be reduced in width See Appendix B for more information See also SET_MODE_POINT SET_MODE_PHA The mode is set to PHA the only mode for the Model 921E This command is included for compatibility with other MCBs SET_MODE_POINT Sets the method of stabilization for both gain and zero stabilization peaks to point mode See Appendix B for more information See also SET MODE GAUSS SET NETWORK ID id Establishes a new network identifier which is to be used by the MCB for ethernet communication The setting only takes effect after a REBOOT Id should be no more than 15 characters See also SHOW NETWORK SET NETWORK ADDRESS company addr Establishes the Ethernet address used by the 83905 Ethernet chip The company portion of the address is usually not included causing the EG amp G ID 41020 to be used The addr portion should not be the same on any two MCBs connected to the network This address is assigned at the factory and should normally never be changed See also SHOW NETWORK ADDRESS Execu
43. e next command before responding with a response record The input level must remain high until the MCB responds otherwise it may not be detected If input num is provided it must be zero This parameter is provided for compatibility with other ORTEC modules 25 Model 921E EtherNIM High Rate MCB Responses 000000069 lt CR gt High level was detected on the input 130131041 lt CR gt Command was aborted by beginning of next command PAUSE_INPUT_LOW input num Waits for a low level to be detected on the Sample Ready input or for the beginning of the next command before responding with a response record The input level must remain low until the MCB responds otherwise it may not be detected If input num is provided it must be zero This parameter is provided for compatibility with other ORTEC modules Responses 000000069 lt CR gt Low level was detected on the input 130131041 lt CR gt Command was aborted by beginning of next command REBOOT Reboots the MCB This command is not normally used and may terminate communication MCB returns 000130 RESET Resets the 921E to the state just after power is applied This command responds with a response that indicates power up just occurred RESET_REMOTE Resets any UART error conditions when sent to the 921E via the mailbox Resets mailbox communications when sent to the 921E via the serial communications path SET ADC HOLDOFF holdoff Prevents data acquisition from
44. e integral preset can be set to from 0 disabled to 4294967295 counts See also CLEAR_PRESETS and SHOW_INTEGRAL_PRESET 29 Model 921E EtherNIM High Rate MCB Execution Errors 131135083 lt CR gt The command was attempted while spectrum acquisition was in progress No action was taken SET_LIVE ticks Sets the live time counter for the MCB to the specified number of ticks The number represents live time in units of 20 ms 50 ticks per second Normally this value is set by the Model 921E during data acquisition See also CLEAR_COUNTERS and SHOW_LIVE Execution Errors 131135083 lt CR gt The command was attempted while spectrum acquisition was in progress No action was taken SET_LIVE_PRESET ticks Sets the live time preset for the MCB to the specified number of ticks During data acquisition when the live time counter reaches the preset number of ticks the preset is complete and the acquisition is stopped Setting a live time preset to ticks disables the preset See also CLEAR_PRESETS and SHOW_LIVE_PRESET Execution Errors 131135083 lt CR gt The command was attempted while spectrum acquisition was in progress No action was taken SET_MDA_COEF a b c Sets the coefficients in the MDA preset calculation to the specified values a b and c are floating point values The MDA preset stops the calculation when the following condition is met MDA Preset gt a y b c CountsinROI Live time The MDA preset cal
45. e output currently at a high level SHOW_OVERFLOW_PRESET Reports the state of the overflow preset for the MCB 43 Model 921E EtherNIM High Rate MCB Responses IT lt CR gt Overflow preset enabled for the MCB IF lt CR gt Overflow preset disabled for the MCB SHOW_PAGE See also SET PAGE Responses A001246 Page Number 1 SHOW PEAK This command returns the contents of the ROI channel with the largest number of counts An ROI channel is a channel that has the ROI flag set The maximum possible value is 2147483647 which 1s the maximum number of counts that can be stored in a 31 bit channel Responses G0000000000075 lt CR gt Maximum count in an ROI channel is zero or no ROI channels were found G0000000001076 lt CR gt Maximum count in an ROI channel is 1 G2147483646120 lt CR gt Maximum count in an ROI channel is 2147483646 G2147483647121 lt CR gt Maximum count in an ROI channel is 2147483647 SHOW PEAK CHANNEL This command returns the number of the ROI channel with the largest number of counts An ROI channel is a channel that has the ROI flag set The lowest number ROI channel with the largest count is reported if more that one channel contains the largest number of counts Channel 16383 is the highest numbered channel in the MCB Responses C00000087 lt CR gt Maximum count was found in channel 0 or no ROI channels were found see errors below C00001088 lt CR gt Maximum count was found in cha
46. eaving a net nonvolatile data memory of 64 000 channels and 2 1 over 2 billion counts per channel Port TTL IN TTL OUT primarily intended to facilitate interfacing to sample changers The Model 921E can be controlled with the accompanying MAESTRO 32 MCA Emulation Software or other ORTEC CONNECTIONS 32 compatible software packages In addition custom control software can be developed with our CONNECTIONS 32 Programmers Toolkit A11 B32 The Model 921E occupies two slots of a NIM standard bin and can be connected to the host PC via the ORTEC Dual Port Memory Interface or the legacy Ethernet interface We recommend using the ORTEC DPM USB converter interface which connects the 921E s Dual Port Memory port to the PC s high speed USB port Use an ac powered USB hub to connect up to eight 8 921Es as you wish one USB DPM per 921E to a single PC Note that Microsoft Windows Vista does not support the 921E Ethernet interface 1 1 About This Manual This manual provides the information you will need to install and configure the Model 921E hardware For instructions on operating the 921E with ORTEC software applications refer to the software user manual Chapter 2 tells how to install the software and hardware Chapter 3 provides troubleshooting information Chapter 4 lists the hardware specifications Model 921E EtherNIM High Rate MCB The appendix of firmware commands and responses is intended for
47. ed as 8192 channels C16384109 lt CR gt Conversion gain reported as 16384 channels SHOW_GAIN_PRESET Reports the Gauss mode stabilization preset for the gain peak The preset represents the minimum number of incremental counts that must be collected in any one channel of the gain 39 Model 921E EtherNIM High Rate MCB peak before the gain is evaluated by the stabilizer and potentially adjusted See Appendix B for more information See also SET_GAIN_PRESET and CLEAR_PRESETS Responses G0000000010076 lt CR gt Gain preset currently 10 counts minimum G0000000011076 lt CR gt Gain preset currently 11 counts G2147483647121 lt CR gt Gain preset currently 2147483647 counts maximum SHOW GAIN STABILIZATION Reports the state of gain peak stabilization See Appendix B for more information See also ENABLE GAIN STABILIZATION and DISABLE GAIN STABILIZATION Responses IT lt CR gt Gain stabilization is currently enabled IF lt CR gt Gain stabilization is currently disabled SHOW_GAIN_WIDTH Reports the current width for the stabilizer gain peak for the MCB See Appendix B for more information See also SET GAIN WIDTH SET GAIN CHANNEL and SHOW GAIN CHANNEL Responses C00001088 lt CR gt Gain width has not been set C00003089 lt CR gt Gain width is 3 channels lowest possible width C00256100 lt CR gt Gain width is 256 channels highest possible width in Gauss mode C16383108 lt CR gt Gain width is 16383
48. ed for compatibility with other MCBs and can be any value from 0 to 65535 but is ignored by the Model 921 E Execution Warnings 000005074 Acquisition already stopped no changes made TERMINAL Prepares the serial line for communication with a terminal In terminal mode text sent to the 921E echoes back to the host and response records sent to the host by the 921E are terminated with a carriage return and line feed This command has no effect when sent via the mailbox See also COMPUTER TEST mask Performs any combination of the 921E internal selftests where mask represents a 16 bit integer with each bit set specifying a test as follows Bit 0 LSB ROM checksum test nondestructive Bit 1 Spectral data memory test destroys spectral data Bit 2 Processor memory test destroys spectral data Bit 3 Serial line test serial loop back connector required Bit 4 RESERVED Bit 5 Mailbox memory test may cause mailbox comm error Execution Errors 004002075 lt CR gt failed test 004004077 lt CR gt ROM2 failed test 004008081 lt CR gt Processor Memory failed test 004016080 lt CR gt Spectral Data Memory or Mailbox Memory failed test 004032078 lt CR gt RESERVED 004064083 lt CR gt Serial Line failed test 51 Model 921E EtherNIM High Rate MCB The actual response record can be a combination of any of the above records depending on the selftests performed For example 004006079 lt CR g
49. g the network identifier which will be used by the MCB for all network communication The default host name is 921 xxxx where xxxx is the serial number of the MCB See also SET NETWORK ID Responses F921 0100 SHOW NEXT Used in conjunction with the SHOW ROI command SHOW NEXT reports the next continuous group of channels in the MCB that have the ROI flag set The response is of the form Dsssssnnnnncce lt CR gt where sssss represents an integer number that is the number of the first channel of the next group of channels that all have their ROI bit set and nnnnn represents an integer number that is the number of channels in the group If no more channels have their ROI bit set SHOW_NEXT returns a first channel of 0 and a number of channels of 0 The SHOW_ROI command is used to report the first group of channels that all have their ROI bit set Example Responses D0100000050078 lt CR gt Next ROI group starts at chan 1000 and is 50 channels long D0215000150086 lt CR gt Next ROI group starts at chan 2150 and is 150 channels long D0000000000072 lt CR gt No other ROI groups to report SHOW_OUTPUT 0 Reports the status of the Change Sample output port The output port status is reported as a 16 bit number that is either O or 1 depending on the level last set by a SET OUTPUT HIGH or SET OUTPUT LOW command Responses C00000087 lt CR gt Change Sample output currently at a low level C00001088 lt CR gt Change Sampl
50. he highest energy peak in the spectrum is generally chosen as gain shifts are more prominent on higher energy peaks Next the width of the window to stabilize on is selected The width should be chosen large enough so that there is little chance that the peak will get shifted out of the window by a sudden peak shift However it should be chosen small enough that only a single peak is in the window Now the ADC and stabilizer can be started The Model 921E intercepts ADC conversions and compares them to the window selected earlier If the conversion falls outside the window no corrections are made If the conversion falls in the high half of the window the gain of the stabilizer is decreased by a small amount If the conversion falls in the low half of the window the gain of the stabilizer is increased by a small amount Zero correction is very similar to gain correction except the peak of interest is generally the lowest energy peak in the spectrum At low energies the gain adjustments have little effect on the peak location so the adjustments made by the gain corrections have little effect on the zero corrections B 2 Gauss Mode Correction In Gauss Mode data is collected in the Model 921E until a peak preset expires When the preset expires the microprocessor in the Model 921E fits a Gaussian to the data to determine the 55 Model 921E EtherNIM High Rate MCB centroid of the peak This information is then used to determine how much
51. int value from 0 to 99 9999 See also SHOW_UNCERTAINTY_PRESET Execution Errors 131128085 lt CR gt The value is incorrect 131132080 lt CR gt A value must be included 33 Model 921E EtherNIM High Rate MCB SET_WIDTH bytes Sets the maximum number of bytes that can be sent to the host computer by the WRITE command Legal Commands SET_WIDTH 0 lt CR gt Width set to default 512 SET_WIDTH 12 lt CR gt Width set to minimum value of 12 bytes SET_WIDTH 512 lt CR gt Width set to maximum value of 512 bytes SET_WINDOW start length Sets the window of interest for the MCB to the specified start channel and number of channels The channels of spectral data in the window of interest are affected by commands such as CLEAR SET_DATA and WRITE If neither start or length is provided the window is set to the maximum size allowed by the conversion gain specified for the MCB The window of interest is always set to the maximum size after a SET DEVICE command or a SET_SEGMENT command Execution Errors 131128085 lt CR gt The start channel was too high for the MCB s conversion gain 131129086 lt CR gt The length specified one or more channels that were too high for the MCB s conversion gain 131132080 lt CR gt The start channel was specified without a length If one value is given the other must be also given SET_ZERO_ADJUSTMENT value Sets the zero stabilization adjustment to an arbitrary value from 0
52. mand Each byte of data is encoded as two hexadecimal characters In the example above 5 bytes are sent Multiple WRITE FILE FLASH commands are used to send the entire block of data 53 Model 921E EtherNIM High Rate MCB 54 APPENDIX B DIGITAL SPECTRUM STABILIZATION The purpose of digital spectrum stabilization is to reduce the effects of peak drift on a spectroscopy system A digital spectrum stabilizer serves as a feedback element in a spectroscopy system The location of a peak channel number is given to the spectrum stabilizer The stabilizer then starts watching the output of the ADC If the stabilizer detects a drift in the system the gain and or offset of the amplifier output is adjusted to keep the peak at the desired channel Two algorithms are provided in the Model 921E The first is the well known method used in most stabilizers where the gain and or offset of the amplifier is adjusted by a small amount after each data point This algorithm is referred to as Point Mode in this document The second algorithm consists of collecting a set amount of data and fitting a Gaussian to the data to determine if any peak shift has occurred and to correct for it B 1 Point Mode Stabilization In Point Mode the gain and or offset of the unit is changed on every data point that falls within the window of interest The basic setup algorithm is as follows When gain conversion is active the user selects a peak to stabilize on T
53. matches the specified file name Wildcards are permissible and if a drive letter is included A should be used for the ROM disk and C should be used for the RAM disk If no drive letter is included C is used If no filename is included C is used SHOW DIRECTORY NEXT returns the next entry in the directory list Responses MCBLOCAL INI 97 01 10 1997 04 24 SHOW DIRECTORY ALL filename ext Responds with the directory entries on the RAM disk or ROM disk directory that match the specified filename Wildcards are permissible and if a drive letter is included A should be used for the ROM disk and C should be used for the RAM disk If no drive letter is included C is used If no filename is included C is used This command returns multiple response records until all matching directory entries have been returned Responses MCBLOCAL INI 97 01 10 1997 04 24 SHOW DIRECTORY NEXT Responds with the next matching directory entry which matches the filename specified in a SHOW DIRECTORY command If there are no more matching entries a 70131137 response is returned Execution Errors 131137085 lt CR gt No more matching entries 38 APPENDIX A FIRMWARE COMMANDS AND RESPONSES SHOW_FEATURES Responds with four 32 bit masks that indicate which features are present in the MCB See Section 4 11 for a complete description of each bit in the mask Example Response FEATURES 02285062207 02014941185 00000000000 00000000000 SHOW_
54. ment must pass a stringent set of quality control tests designed to expose any flaws in materials or workmanship Permanent records of these tests are maintained for use in warranty repair and as a source of statistical information for design improvements Repair Service If it becomes necessary to return this instrument for repair it is essential that Customer Services be contacted in advance of its return so that a Return Authorization Number can be assigned to the unit Also ORTEC must be informed either in writing by telephone 865 482 4411 or by facsimile transmission 865 483 2133 of the nature of the fault of the instrument being returned and of the model serial and revision Rev on rear panel numbers Failure to do so may cause unnecessary delays in getting the unit repaired The ORTEC standard procedure requires that instruments returned for repair pass the same quality control tests that are used for new production instruments Instruments that are returned should be packed so that they will withstand normal transit handling and must be shipped PREPAID via Air Parcel Post or United Parcel Service to the designated ORTEC repair center The address label and the package should include the Return Authorization Number assigned Instruments being returned that are damaged in transit due to inadequate packing will be repaired at the sender s expense and it will be the sender s responsibility to make claim with the shipper Instruments not i
55. meric values as described in the accompanying text and should not be sent literally to the MCB but should be 19 Model 921E EtherNIM High Rate MCB replaced by an appropriate numeric value Items in the command prototype that are surrounded by brackets are optional items and are not always required In this section the term lt CR gt represents the ASCII carriage return character decimal value 13 and the character represents the ASCII underscore character decimal value 95 CLEAR The channels of spectral data in the window of interest see SET_WINDOW command for the Model 921E see SET_DEVICE command are set to zero The live time and true time counters for the MCB are also set to zero This command is equivalent to the combination of CLEAR_COUNTERS and CLEAR_DATA commands CLEAR_ALL This command is equivalent to the combination of CLEAR_COUNTERS CLEAR_DATA CLEAR_PRESETS and CLEAR_ROI commands Execution Errors 131135083 lt CR gt The command was attempted while spectrum acquisition was in progress No action was taken CLEAR_COUNTERS The live time and true time counters for the MCB see SET DEVICE command are set to Zero CLEAR_DATA The channels of spectral data in the window of interest see SET WINDOW command for the MCB see SET DEVICE command are set to zero The ROI flags are not changed nor are the presets changed CLEAR PRESETS The live time true time ROI integral ROI peak and overflow
56. monopolizing the microprocessor so the microprocessor can perform other tasks such as communication with the host computer Holdoff can be from 0 to 65535 This command is not normally used See also SHOW ADC HOLDOFF SET CONFIGURATION UART bbbbbpds A syntax error See also SHOW CONFIGURATION UART Sets the baud rate parity number of data bits and the number of stop bits for serial port communication The parameter is an ASCII string which specifies the settings where bbbbb is the baud rate with leading zeros if necessary p is replaced with O E or N to indicate odd even or no parity d is replaced with the number of data bits 5 8 and s is replaced with the number of stop bits 1 2 For example SET CONFIG UART 09600N81 sets the baud rate to 9600 disables parity checking sets the number of bits to 8 and the number of stop bits to 1 26 APPENDIX A FIRMWARE COMMANDS AND RESPONSES SET_DATA count Sets all channels of spectral data in the window of interest see SET_WINDOW command for the MCB to the specified count ROI flags are not affected SET DATA APP entry data Stores information such as sample descriptions and energy calibrations in the MCB internal memory that can be used by other programs Entry 32 characters maximum specifies the type of information to store with data 128 characters maximum SET DATE day month year Sets the date stored in the battery backed up system clock to the specified values
57. n warranty should follow the same procedure and ORTEC will provide a quotation Damage in Transit Shipments should be examined immediately upon receipt for evidence of external or concealed damage The carrier making delivery should be notified immediately of any such damage since the carrier is normally liable for damage in shipment Packing materials waybills and other such documentation should be preserved in order to establish claims After such notification to the carrier please notify ORTEC of the circumstances so that assistance can be provided in making damage claims and in providing replacement equipment if necessary Copyright 2010 Advanced Measurement Technology Inc All rights reserved ORTEC is a registered trademark of Advanced Measurement Technology Inc All other trademarks used herein are the property of their respective owners TABLE OF CONTENTS WARRANTY al sues eet a tebe ota txt ii Safety Instructions and Symbols IR e E b REQUE EE bx iv Safety Warnings and Cleaning Instructions INTRODUCTION ye quee ox tae mitra Ua odit d 1 1 1 About This Manual tan ne oun acne mk melee be ARON SCENE RE UE EES 1 2 INSTALLATION vr a ee See Se Ose 3 2 1 Ethernet Connection Not Supported by Vista 4 2 2 Cabliis
58. nnel 1 C16382107 lt CR gt Maximum count was found in channel 16382 C16383108 lt CR gt Maximum count was found in channel 16383 SHOW PEAK PRESET 44 Reports the value of the ROI peak preset for the MCB See SET PEAK PRESET for information about the ROI peak preset Responses G0000000000075 lt CR gt Peak preset disabled G0000000001076 lt CR gt Peak preset set to 1 count G2147483646120 lt CR gt Peak preset set to 2147483646 counts G2147483647121 lt CR gt Peak preset set to 2147483647 counts APPENDIX A FIRMWARE COMMANDS AND RESPONSES SHOW_RADIX This command is for compatibility with other ORTEC MCBs It always reports that the number base radix for the WRITE command is binary Responses FBIN lt CR gt Number base set to binary radix SHOW_REMOTE See also SET REMOTE Responses IT lt CR gt The remote is enabled IF lt CR gt The remote is disabled SHOW_ROI Used in conjunction with the SHOW NEXT command SHOW ROI reports the first continuous group of channels in the MCB that have the ROI flag set The response is of the form Dsssssnnnnnccc CR where sssss represents an integer number that is the number of the first channel of the first group of channels that all have their ROI bit set and nnnnn represents an integer number that is the number of channels in the group The SHOW NEXT command is used to report the next group of channels that all have their ROI bit set Responses D01000000
59. olarity SET SHOW GAIN POLAR Support for flattop optimization ENA DIS Stoppable AutoPZ Network support 1 92X IT Multi drop serial support e g RS 485 Software selectable DPM address Multiple devices e g 919 Software selectable ADC gate mode SET Downloadable firmware Time histogram functions available e g 9308 Software selectable Lower level disc Software selectable Upper level disc MCS mode SCA input available MCS mode positive TTL input available MCS mode fast negative NIM input available MCS mode discriminator input available Software switchable discriminator edge Software programmable discriminator level Software programmable SCA upper and lower thresholds Software selectable MCS mode input sources Statistical preset Features vary by input SHOW_FEATURES depends on device segment Software selectable HV shutdown mode Software selectable shaping time constants Explorable shaping time constants SHOW_CONFIG_SHAP Advanced shaping time SET_SHAP_RISE SET_SHAPE_FLAT etc Software selectable BLR ENA DIS SHO_BLR_AUTO SET SHO VERI_BLR SHOW_STATUS command supported returns M record Overflow preset ENA DIS SHO_OVER_PRES 13 Model 921E EtherNIM High Rate MCB Bit 53 54 55 56 57 58 39 60 61 62 63 64 65 66 67 68 69 70 127 14 Meaning Software enabled audio clicker ENA DIS CLICK Software readable thermistor SHOW THERM Fine Gain is float number S
60. on See also SHOW_ZERO_PRESET SET ZERO WIDTH chans Sets the width in channels for the stabilizer zero peak for the MCB The zero width must be chosen such that the beginning channel is no lower than channel 0 and the ending channel is no higher than the maximum channel as determined by the conversion gain The zero channel and width must be set before zero stabilization can be enabled The absolute minimum width for the zero peak is 3 channels and the absolute maximum width for the zero peak is 256 channels in Gauss mode In point mode there is no maximum peak width though the chosen width must allow the peak to fit within the MCB s channel limits as stated above See Appendix B for more information Execution Errors 131128085 lt CR gt The specified number of channels would create a peak that was less than the minimum 3 channel width or would be outside the MCB s range 131136084 lt CR gt The command was attempted while zero stabilization was enabled SHOW_ACTIVE Returns a 1 if the ADC is active acquiring spectral data or O if it is not active Responses C00000087 lt CR gt The ADC is not active C00001088 lt CR gt The ADC is active SHOW_ACTIVE_DEVICES Included for compatibility with other MCBs Returns a bit mask of the currently active devices as follows 35 Model 921E EtherNIM High Rate MCB Responses C00000087 lt CR gt 921E ADC is not active C00001088 lt CR gt 921E ADC is active
61. pectrum acquisition was in progress No action was taken SET_RADIX_BINARY This command is provided for compatibility with other ORTEC MCBs It specifies that binary records are to be used by the WRITE command for sending spectral data to the host computer via the serial line This is the only radix supported by the Model 921E MCBs SET ROI start chan number of chans Sets the ROI flags for the specified channels in the MCB This command can be used multiple times to set ROI flags without affecting previously set flags ROI flags specify channels within the MCB that are considered for ROI integral and ROI peak presets SET ROI MDA start chans Sets the region to be used for the MDA preset calculation SET ROI UNCERTAINTY start chans Sets the region to be used for the uncertainty preset calculation See also SHOW ROI UNCERTAINTY SET SEGMENT number Provided for compatibility with Model 918 type MCBs This command has no effect for Model 921E MCBs The segment number can be any value from 1 through 16 Execution Errors 131128085 lt CR gt The specified segment number was either zero or a value gt 16 32 APPENDIX A FIRMWARE COMMANDS AND RESPONSES SET TIME hour min sec Sets the time stored in the battery backed up system clock to the specified values Hour can be any value from 0 to 23 Min and sec can be any value from 0 through 59 The current date and time are stored for the MCB when an acquisition is started See also SHOW TIM
62. ponse Records 16 A Dollar Response Records 19 A Command Calon vesc ei ee wares E RR Wee RAL E MEE 19 APPENDIX B DIGITAL SPECTRUM STABILIZATION 99 1 Point Mode Stabilization 55 B 2 Gauss Mode Correction 22 Safety Instructions and Symbols This manual contains up to three levels of safety instructions that must be observed in order to avoid personal injury and or damage to equipment or other property These are DANGER Indicates a hazard that could result in death or serious bodily harm if the safety instruction is not observed WARNING Indicates a hazard that could result in bodily harm if the safety instruction is not observed CAUTION Indicates a hazard that could result in property damage if the safety instruction is not observed In addition the following symbols may appear on the product AN DANGER High Voltage N ATTENTION Refer to Manual Please read all safety instructions carefully and make sure you understand them fully before attempting to use this product iv Safety Warnings and Cleaning Instructions DANGER Opening the cover of this instrument is likely to expose dangerous voltages Disconnect the instrument from all voltage sources before opening it WARNING Using this ins
63. rd for the WRITE command which contains binary integer numbers All commands eventually respond with a percent response record so named because the response begins with an ASCII percent sign 96 which signifies the completion of the command SHOW and STEP commands respond with a dollar response record which begins with an ASCII dollar sign followed by a percent response record The WRITE command can respond with multiple pound sign records which begin with an ASCII pound sign but eventually completes by sending a percent response record All other commands result in a single percent response record upon completion A 2 Command Records Model 921E commands consist of a command header which may be followed by numeric parameter values The header consists of a verb or a verb and noun separated by an underscore or a verb noun and modifier each separated by underscores The verbs nouns and modifiers in the command header are mnemonic words such as the verb ENABLE or the noun OVERFLOW that relate to the function performed by the MCB when it executes the command The first four letters of any word will always be enough to uniquely identify the word when composing commands for an MCB For example the command ENABLE_OVERFLOW_PRESET can be abbreviated to ENAB_OVER_PRES Numeric parameters are unsigned integer numbers that follow the command header separated by one or more spaces Specific commands require up to three parameters
64. reset reported as 1 tick G4294967295132 CR True time preset reported as 4294967295 ticks SHOW TRUE REMAINING Reports the current true time remaining in units of 20 ms 50 ticks per second See also SET TRUE REMAINING Responses G0000000000075 lt CR gt True time remaining reported as disabled G0000000001076 lt CR gt True time remaining reported as 1 tick G4294967295132 lt CR gt True time remaining reported as 4294967295 ticks SHOW_UNCERTAINTY Returns the current value of the uncertainty for the peak in the uncertainty preset See also SET_UNCERTAINTY Responses UNCE 0000000000008 5 Uncertainty of the peak is 8 5 SHOW_UNCERTAINTY_PRESET Returns the current uncertainty preset setting See also SET_UNCERTAINTY_PRESET Responses UNCE_PRES 000000000000000 No preset UNCE_PRES 0000000000008 5 Preset set to 8 5 SHOW_VERSION Reports the 921E firmware version number in the form Fmmmm vvv lt CR gt where mmmm is a 4 character model designator and vvv is a 3 character version designator Example Responses FE921 005 lt CR gt Model 921E firmware version 5 reported SHOW_WIDTH Reports the maximum number of bytes that can be sent by the 921E to the host computer as a result of the WRITE command See also SET_WIDTH and WRITE 48 APPENDIX A FIRMWARE COMMANDS AND RESPONSES Responses 00012090 lt gt Width reported as 12 bytes minimum width C00013091 lt CR gt Width reported as 13 bytes C00512095
65. signal gain with a value of 2048 representing unity gain This adjustment is usually made only by the gain stabilizer and reset to unity with the INITIALIZE_GAIN_STABILIZATION command See Appendix B for more information See also SHOW_GAIN_ADJUSTMENT SET_GAIN_CHANNEL chan Sets the center channel for the stabilizer gain peak for the MCB If a gain channel is chosen such that the beginning channel or ending channel would be below channel 0 or above the maximum channel as determined by the conversion gain the gain peak width is reduced until the peak fits the MCB boundaries A gain channel and width must be set before gain stabilization can be enabled See Appendix B for more information Execution Errors 131128085 lt CR gt The specified channel number would create a peak that was less than the minimum 3 channel width or would be outside the MCB s range 131136084 lt CR gt The command was attempted while gain stabilization was enabled SET_GAIN_CONVERSION chans Sets the conversion gain for the MCB The conversion gain defines the number of channels within the MCB that will used for spectral data This has the effect of altering the resolution of the ADC from 14 bits conversion gain 16384 to 9 bits conversion gain 512 for the MCB See also SHOW_GAIN_CONVERSION Legal Commands SET GAIN CONVERSION 0 lt CR gt Conversion gain set to default 16384 SET GAIN CONVERSION 512 CR Conversion gain set to 512
66. t and ROM 2 both failed test 004010074 lt CR gt Processor Memory and ROMI both failed test TRIGGER Triggers the data acquisition as if an edge occurs on the Change Sample connector See ENABLE TRIGGER and DISABLE TRIGGER WRITE 52 Starts the transmission of the spectral data in the window of interest see SET WINDOW command for the MCB from the 921E to the host computer The WRITE command responds with a binary data record as follows 11 111122223333 nnnns In this record represents a 16 bit binary integer that is the record length cc represents a 16 bit binary integer that is the number of the first channel in the record is an unused byte 1111 represents a 32 bit binary integer that is the contents of the first channel in the record 2222 represents the second channel in the record etc nnnn represents the nth channel in the record and s represents an 8 bit binary checksum of the entire record up to the checksum byte itself After the 921 E MCB responds with a binary data record the host computer must prompt for the next record with one of the following handshake prompts GO lt CR gt RE lt CR gt or HA lt CR gt GO causes the next binary data record to be sent by the 921E or the response if the last record has already been sent RE causes the previous binary data record to be resent exactly as it was the last time HA causes the WRITE command to be halted and responds with a 130131078 lt CR gt re
67. tion Errors 131128085 lt CR gt The number must be between 0 and 16777215 SET_OUTPUT port value This sends the value to the port The port number can be 0 or 1 0 is the change sample output and 1 is the serial port Value must be between 0 and 255 See also SHOW OUTPUT SET_OUTPUT_HIGH output num Sets the Change Sample output to a high level If output num is provided it must be zero This parameter is provided for compatibility with other ORTEC modules SET OUTPUT LOW output num Sets the Change Sample output to a low level If output num is provided it must be zero This parameter is provided for compatibility with other ORTEC modules 31 Model 921E EtherNIM High Rate MCB SET_PAGE num Debugging command that maps the DPM to page num num can range from 1 to 4 See also SHOW_PAGE SET_PEAK_PRESET count Sets the ROI peak preset for the MCB to the specified count During data acquisition when the contents of any channel that has the ROI flag set reaches the peak preset count the preset is complete and the acquisition is stopped The actual number of counts in the ROI peak may exceed the preset value by a small number of counts due to the pipelined architecture of the Model 921E Setting a peak preset to 0 counts disables the preset The peak preset can be set to from 0 disabled to 2147483647 counts See also CLEAR PRESETS and SHOW_PEAK_PRESET Execution Errors 131135083 lt CR gt The command was attempted while s
68. trument in a manner not specified by the manufacturer may impair the protection provided by the instrument Cleaning Instructions To clean the instrument exterior e Remove loose dust on the outside of the instrument with a lint free cloth e Remove remaining dirt with a lint free cloth dampened in a general purpose detergent and water solution Do not use abrasive cleaners CAUTION To prevent moisture inside of the instrument during external cleaning use only enough liquid to dampen the cloth or applicator d MODEL 921E ETHERNIM uP STAB ADC BUSY BUSY BUSY 2 9 B 1 INTRODUCTION The ORTEC Model 921E EtherNIM High Rate Multichannel Buffer MCB is a two wide NIM module designed for high rate and high performance data acquisition in nuclear spectroscopy applications It offers the following functions Digital Spectrum Stabilizer Ensures spectral stability over long counting periods and wide ranges of count rate and temperature Analog to Digital Circuit ADC High speed 16k channel successive approximation type with a conversion time of 1 5 us at a rate of 100 000 counts sec measured at a 5 us shaping time with a Model 973 High Rate Spectroscopy Amplifier Data Memory The architecture of the Model 921E employs an 80386 microprocessor with dual Direct Memory Access DMA channels to maximize system throughput In data memory bit is reserved for a region of interest ROI flag l
69. uisition start date for the MCB in the form dddmmmyyy The day is returned as a 3 digit integer number from 001 through 031 The month is returned as a 3 digit integer number from 001 through 012 And the year is returned as a 3 digit integer number from 000 through 099 See also SET_DATE_START Responses N001001088052 lt CR gt Start date reported as Jan 1 1988 N031012009959 lt CR gt Start date reported as Dec 31 1999 N001001000036 lt CR gt Start date reported as Jan 1 2000 N031012008756 lt CR gt Start date reported as Dec 31 2087 SHOW_DATE_TRIGGER Responds with the date that the last valid trigger occurred either via the TRIGGER command or the Sample Ready input If no valid trigger has occurred since power up or if ENABLE_TRIGGER is sent followed by DISABLE_TRIGGER without a valid trigger the command returns all zeros 37 Model 921E EtherNIM High Rate MCB Example Responses N000000000ccc No valid triggers have occurred N011002097ccc Trigger occurred February 11 1997 SHOW DEBUG Shows the debug level See also SET DEBUG Responses A003248 Returns the debug state as Axxxccc where xxx is the debug level and ccc is the checksum SHOW DEVICE Included for compatibility with other MCBs Always returns 1 as the number of the MCB Responses A001246 CR Device number 1 is currently selected device SHOW DIRECTORY filename ext Responds with the first item in the RAM disk or ROM disk directory that
70. um is sent with this record GXxxxxxxxxxxccc lt CR gt XXXXXXXXXxX is a Single 32 bit unsigned number IT lt CR gt True response to a SHOW command no checksum IF lt CR gt False response to a SHOW command no checksum Jxxxxxyyyyy ccccCR Response to SHOW CONFIGURATION command Mxxxxxxxxxx ccccCR Response to SHOW STATUS command Nxxxyyyzzzccc lt CR gt XXX yyy and zzz are 8 bit unsigned numbers A 5 Command Catalog This section lists each Model 921E command with a description of its operation The descriptions include a list of any unusual responses that may result As described in previous sections the usual response from a command is a 0000000069 CR response which represents a macro error code of 0 and a micro error code of 0 no errors All execution error responses if any are listed for each command Though syntax and communication error responses may result from any command in practice these error responses rarely occur on systems with reliable communication hardware running debugged software Refer to Section A 3 for information about error responses In the following catalog the commands are listed in alphabetical order each starting with a command prototype line Upper case letters numeric digits blank space and special symbols such as the underscore and comma in the prototype line are literal text to be sent to the MCB exactly as it appears Lower case letters in the prototype line represent nu
71. users who wish to write custom software to control the Model 921E 2 INSTALLATION Do not connect the 921E to the PC until MAESTRO 32 has been installed 1 Install the accompanying version of MAESTRO 32 and the CONNECTIONS 32 Update Kit if included according to its instructions Depending on the 921E to PC interface s you will use mark the appropriate checkbox es on the installation wizard s Instrument Family page as follows e If using a DPM USB interface converter to attach the 921E to the PC mark the DPM USB checkbox e If using only the Ethernet interface no ORTEC instruments with other types of interfaces are connected to your PC no selection is required in the installation wizard Turn off the bin power supply and install the Model 921E in the bin Cable the spectroscopy system components together DPM USB interface Attach the DPM USB converter s 37 pin connector to the rear panel of the 921E e Ethernet interface If connecting via Ethernet see Section 2 1 Turn on the bin power The uP Busy LED on the front panel of the Model 921E should light brightly for a few seconds and then go out Connect the powered on 921E to the system e DPM USB interface Connect to PC s USB port or to an ac powered hub hosted by the PC The Windows found new hardware wizard will open Follow the prompts choosing to a not go to the Internet or the Microsoft website to find the driver and b

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