LMM5 User Manual
Contents
1. on line 4 0x02 is high byte equals 512 and OxBC is low byte equals 188 so 51241882700 Receive 0x04 Ack Notes Transmission is logarithmic for a filter wheel For our 20dB wheels 50 10dB and is actually 10 transmission When the device with filter wheels is first turned on the filter wheels automatically rotate to find the home sensor and then return to their position at initial power up The AOTF if applicable is set to minimum transmission at startup 3 1 4 Command Read Transmission Read the current transmission setting for a specific laser line This may be done for a filter wheel or an AOTF Op Code 0x05 Data 1 byte to indicate which line to return Return 3 bytes First is an ack 0x05 for normal operation and OxFF for error Next two bytes give transmission from 0 to 1000 in big endian format as in change transmission command Example Send 0x05 0x03 read transmission of line 4 Receive 0x05 0x02 OxBC transmission is 700 3 1 5 Command Get Laser Line Setup Read which laser line wavelength is installed in which slot Op Code 0x08 Data None Return 17 bytes First is an Ack 0x08 for normal operation and OxFF for error Each two bytes after gives the wavelength of the laser in the corresponding line for a total of 8 lines The byte order is big endian high byte first The wavelength is in angstroms so 4610 corresponds to 461 0 nm A value of zero indicates that no laser line is assigned to that s2. 1 2 Command Shutter Status Read the open closed states of the shutters Op Code 0x02 Data None Return 2 bytes First byte is an Ack byte 0x02 Second byte gives shutter states in a bit field as in shutter control Example Send 0x02 Receive 0x02 0x02 shutter 2 is open all others are closed Send 0x02 Receive 0x02 0x09 shutter 1 and 4 are open all others closed Notes This command returns the status of the photodetector sensor on each shutter It takes 1 2 milliseconds for this sensor to respond to a shutter operation 3 1 5 Command Change Transmission Set the Transmission of a specific laser line This may be done through a filter wheel or an AOTF Op Code 0x04 Vy Software Manual RS232 fef Laser Merge Module model LMM5 SPECT L Document SU 586521 01 Rev A APPLIED RESEARCH Data 3 bytes First specifies the lines to change attenuation line 1 is 0x00 Second and third give transmission from 0 to 1000 0 is minimum transmission and 1000 is maximum Byte order is big endian high byte first Return byte Ack 0x04 normally and OxFF if there is an error An error could occur if the device loses its position for the filter wheel or fails to set the voltage to an AOTF When controlling a filter wheel this command may take several seconds to acknowledge as it waits until the wheel movement is complete before acknowledging Example Send 0x04 0x03 0x02 OxBC sets the transmission to 700 70 0
3. 37 Bytes Sent None 16 7E i Software Manual RS232 fef Laser Merge Module model LMM5 SPECTRAL Document SU 586521 01 Rev A Return Returns the state of the trigger in setup in the same format as the trigger in configuration command Example Send 0x25 Receive 0x25 0x01 0x02 0x00 42 45 Read Trigger Out Configuration Op Code 0x26 38 Bytes Sent None Return Returns the state of the trigger out setup in the same format as the trigger out configuration command Example Send 0x26 Receive 0x26 0x01 0x00 0x03 0xAD 42 46 Read Exposure Configuration Op Code 0x27 39 Bytes Sent None Return Returns the exposure parameters in the same format as the exposure configuration command Example Send 0x27 Receive 0x27 0x02 0x17 0x06 0x 10 0x00 0x03 0xAD 17
4. 000000 4 1 Auxiliary Connector aiios ier ske sone 42 Programmable Md y eee 4 2 1 4 2 2 4 2 3 4 2 4 Table of Contents Command Shutter Conrol iere secees tese ees neck oen eU aa Fe eU xaau ua bud ne pre epa Re eot ro UE Command Shutter Slats gsscicesscccss er eror ro eter pbe epe pRaR oa peek a reae ee bn Peak ev pb nore e eee esse eee se Command Change Transmission 4 eee ee eee e eee eee eee eerte seen sete to see to seen Command Read Transmission eese eee e eee eee ee eee ee esee ense sete tn oeste tane sese ena Command Get Laser Line Setup ecce eerte eee eee ee sete sese eese saos sense ens Command Read Power Monitor 4 eee ee ee eee eee ee ee ee ette eese teens eee teta sese teens Exposure Conflgure eee eer Ce IS ENH ER PP FEFKENHA RE MRRSyRENEYAR EUN ERR Eo utsik Ren Ee Pes aUa ss dau Mr diui cC ss Trigser Out Confisure sc ccices ccva tesa scecseesccenvedacnsstuos cewayecaeneseensuesernsacwancovensc voredeavesucusns Read Trigger In Configuratiion ccccccsssccssssssssssssesssssssscssssssosssssesssssssssssssecses Read Trigger Out Configuration seessesvsssnsvessnsvensvsvenssseensssesnssseenssnsenssneensssesnssseene Read Exposure Configuration ecce eee ee eee ee eene ee enne seen sese en sete ense teta seta us Home Motoi oeseri ees eo ero een eo eoo ee aa ee usos ue eu eoo EET ee ae one e
5. D SPECT RAL AP REI EDs ok S A Cord Software Manual RS232 Laser Merge Module Document SU 256521 09 Rev A The information presented in this document is proprietary to Spectral Applied Research Inc and cannot be used for any purpose other than that for which it is intended 10 North Rivermede Road Concord Ontario CANADA L4K 2H2 www SpectralAppliedResearch com hy Software Manual RS232 f Laser Merge Module SPECT D Document SU 586521 09 Rev A APPLIED RESEARCtH 2 T Shutters eor etico elu inter pedec adore sed e phace cu densa Pec e rh dioe cietos bado PRA coli teu vVr tU dt do NE Ce Ea REPRE EQUES 2 2 Neutral Density Filters e 2 3 Power Monitor niit eee eoe errato eee e eese peu Pe ee et ee eo erba ao pe ooa ccsesbuntsbedecscevsetesseusessuscesbeseuess 2 4 Microcontroller Interfaces ei oreet tore tl ee e ep pa Ee bra gekev ees apum ee eu bore ER vene Oo Fe Ra UE D eee see 2 3 RS 232 Interface C dere Sev RS232 PROTOCOLS seede 3 1 Control Commands ooo aseo eo ee oe asa pacco eo eaae oe a eec a eo eoo seere eee o UR RES SUE ease 3 1 1 3 1 2 3 1 3 3 1 4 3 1 5 3 1 6 3 3 2 Trigger Commands sisal 3 2 1 3 2 2 3 2 3 3 2 4 3 2 5 3 2 6 3 3 Other Conimmands 5eieee cese cene cs caccscdesccdsscdeuasssdcsecesocesecsssdcsscdssccesesssdeseccssceoscsssdessccedecess 3 3 1 4 TRIGGER IMPLEMENTATION GUIDE 000000000000000000000000000000000000000000
6. a RS 232 or TTL interfaces The following is a compilation of the programmable controls and a brief description of their function All references to controls and indicators are highlighted in bold in the descriptions below The following figures show the front and rear panels of the control unit 2 1 Shutters Mechanical shutters are built into the LMM5 A shutter is installed for each laser at the exit from the laser compartment A master shutter is also installed prior to the exit from the head unit The laser shutters are controlled by lighted momentary pushbutton switches located on the front panel of the control unit or by the computer The pushbuttons are identified by the label Laser Select and by the laser position number 1 5 The light is red when the shutter is open No light is showing when the shutter is closed Pushing the pushbutton will toggle the status of the shutter The master shutter is initialised open about 5 seconds after power is applied by the Master Key switch and its indicator turns red Any other shutter can now be selected as required The Master Shutter pushbutton controls the master shutter in the same manner as the other shutters If the Remote Interlock is open circuited then all the shutters close immediately 2 2 Neutral Density Filters Neutral density filter wheels are installed for each laser in order to provide intensity control The manual controls for these mechanisms are located on the control unit The co
7. as ocv veo ea oc ene E oA ona Va eU Ne Tad QO 3 3 3 NNA Ui Ui Ui Un 4 4 RR RD DN DID KO RR Nu Ural Li ose Co DEOR E Trigger Out coins cts ted Res Li oculta DO b ER ORI eee Gel Trigger Flow Charts sidegren aequ po Fen aped ivi ee P eodd eei in duse ioo esie Prosramimlilpuonniioetine dinalis so IIo E ipit iens ntur 15 SSK List of Figures Figure 1 Trigger In Cycle driven flow charts esesevevssvevnnvesnvensveessnennnvennnvennvensvnessnennneesevesssser 10 Figure 2 Trigger In State driven flowcharts eevosevevssvevnnvesnvensveessnennnennneennvensnnessnennnvesnvensvner 12 Figure 3 Trigger Out MowChart sic sscssivssssciseseiientsoocsossiesseveessvousssbesdensbenxsoonssoussvanssveessoussounsoonsive LA i The information presented in this document is proprietary to Spectral Applied Research Inc and cannot be used for any purpose other than that for which it is intended hy Software Manual RS232 f Laser Merge Module model LMM5 SPECT Document SU 586521 01 Rev A APPLIED RESEARCH 1 INTRODUCTION This manual is a compilation of material on the programming of the Laser Merge Module model LMMS using the RS 232C interfaces and the triggering capability available via TTL and dedicated BNC connectors on the control unit The document is presented in major segments starting with a description of the pertinent controls 2 CONTROLS The LMMS can be controlled either manually or by a computer via
8. ble functionality One BNC is an output and the other is an input The behaviour of these TTL connections can be programmed to a variety of functions through the serial RS232 or USB connection to a computer 4 1 Auxiliary connector A 15 pin D subminiature connector female labelled Auxiliary Controls is provided on the rear panel of the control unit to allow auxiliary control via TTL inputs of the shutters and ND wheels The TTL input signals are OR d with the microcontroller signals and the front panel controls A TTL High will open the corresponding shutter and a TTL Low will close the shutter However the microcontroller and front panel controls must be set to Closed to avoid overrides The pinout of the 15 pin connector is shown in the following table Pin Function Pin Function Pin Function Pin Function 1 Shutter 1 4 Shutter 4 7 Intensity ve 10 Not used 2 Shutter 2 5 Shutter 5 8 Signal return 15 Not used 3 Shutter 3 6 Intensity ve 9 Not used 4 2 Programmable TTL The LMM controller has BNC connections for both trigger in and trigger out Both are used to coordinate the LMM with other equipment such as cameras and experimental apparatus Sections 4 2 1 and 4 2 2 give a description of the functions 4 2 3 shows flowcharts for the triggers and 4 2 4 gives detailed programming information 4 2 1 Trigger In The trigger in BNC is used to control the on off cycle for las
9. ent SU 586521 01 Rev A APPLIED RESEARCH Decrement Exposure Timer No Exp and Trig Out Trigger Out Out If State Trigger Out Enabled Shutters Closed Decrement Trigger Out Timer No Trigger Out Trigger Out Trigger In Ignore if Trigger Out pending or Cycle not If State Trigger finished Out Enabled Decrement Trigger Out Timer Shutter in State 0 11 hy Software Manual RS232 f Laser Merge Module model LMM5 SPECT Document SU 586521 01 Rev A APPLIED RESEARCH Figure 2 Trigger In State driven flowcharts Note Exposure Timer is reset if new trigger occurs before timer counts down Shutters Closed If State Trigger Shutter in State 0 Out Enabled Decrement Exposure Timer i Decrement Trigger Out Timer Yes Shutters Closed Trigger In No Trigger Out Trigger Out Trigger In Ignore if Trigger If State Trigger Out pending Out Enabled Shutter in State 1 Bar ere b nd Exposure Timer Trigger Out Yes Shutters Closed No Ye S Trigger Out 12 hy Software Manual RS232 f Laser Merge Module model LMM5 SPECT D Document SU 586521 01 Rev A APPLIED RESEARCH Shutters Closed If State Trigger Out Enabled Decrement Trigger Out Timer Trigger Out Trigger In Shutter in State 0 Decrement Exposure Timer i Yes Shutters Closed No Trigger Out Trigg
10. er In Ignore if Trigger If State Trigger Out pending Out Enabled Shutter in State 1 oa tik s Exposure Timer Trigger Out Yes Shutters Closed No Trigger Out 13 7E Software Manual RS232 fef Laser Merge Module model LMM5 SPECTRE Document SU 586521 01 Rev A APPLIED RESEARCH Figure 3 Trigger Out flowchart Decrement Trigger Out Timer Trigger Out No Trigger Out Decrement Trigger Out Timer Trigger Out No Trigger Out 14 7E Software Manual RS232 fef Laser Merge Module model LMM5 SPECT Document SU 586521 01 Rev A APPLIED RESEARCH 4 2 4 Programming These commands define the function of the trigger in and out BNCs from the control box See the LMMS programming guide for more information on sending commands to the LMMS 42 41 Exposure Configure Op Code 0x21 33 Bytes Sent 1 3M 1 lt M lt 20 Bytes 1 of exposure states value of 1 to M 2 to M 1 exposure states M 2 to 3M 1 exposure time Description This command defines the exposure parameters that the unit cycles through upon receiving a trigger in The number of exposure states determines the number of different shutter states that the unit will go through before repeating the cycle The exposure states give the shutter states for each exposure in the cycle The format is the same as the shutter control command so each bit in the byte indicates the state of the corresponding
11. er In is positive edge TTL There is a jitter of up to 50 microseconds in processing the trigger in Motor control function and shutter control manual and usb are disabled while trigger is active Motor control is deactivated due to limited timing resources and speed of the MCU and shutter control is deactivated since shutter states are determined by the exposure configuration 3 2 3 Trigger Out Configure Op Code 0x23 35 Bytes Sent 4 Bytes 1 Enable 1 Disable 0 Trigger Out 2 State O Clock 1 driven mode 3 4 Exposure Time Description This commands enables the hardware trigger out The trigger out can either be state driven so a trigger out occurs every time the shutter changes exposure state or clock driven with the period between trigger outs is determined by exposure time For state driven the exposure time determines the delay from the state change to the trigger out The exposure time is in 0 1 msec increments with a maximum of a bit more than 6 5 sec The trigger out is a TTL pulse with a width of a few microseconds Example 0x23 0x01 0x00 0x03 0x AD Define a state driven trigger out with a delay of 0 0941 sec 0x23 0x01 0x01 0x00 0xC8 Define a clock driven trigger out at 50 Hz 20 msec delay Notes Motor movement is disabled when trigger out is active 7E Software Manual RS232 fef Laser Merge Module model LMM5 SPECTRAL Document SU 586521 01 Rev A APPLIED RESEARCH 3 2 4 Read Trigger In Configuration Op C
12. er illumination based on externally generated conditions set of exposure states is defined and the trigger steps through these states in order The command structure is as follows 4 2 11 Defining the exposure cycle Data byte specifies the number of exposure states M to cycle through 1 to 20 M bytes defining each of the exposure states using the same format as the Shutter Control command and 2M bytes to specify the exposure times for each shutter state 7E Software Manual RS232 fef Laser Merge Module model LMM5 SPECT L Document SU 586521 01 Rev A APPLIED RESEARCH The exposure times will be set in tenths of milliseconds and a zero will indicate to stay in that exposure state until the next trigger 4 2 1 2 Configuring the trigger Data 1 byte to enable disable the external trigger 1 byte to specify N which is the number of trigger inputs to accumulate before initiating action 1 byte specifying whether to step or cycle through the exposure states When enabled USB and manual control of the exposure is disabled This means the shutters and ND wheels will not be controllable The step mode will advance to the next exposure state on each trigger and then repeat the cycle when all states are complete The exposure duration is determined by the set time after which the exposure state reverts to all closed while waiting for the next trigger The cycle exposure mode will cycle through all the defined exposure states afte
13. lot Example Send 0x08 7E Software Manual RS232 fef Laser Merge Module model LMM5 SPECT L Document SU 586521 01 Rev A APPLIED RESEARCH Receive 0x08 0x15 OxEA 0x13 0x2E 0x11 0x30 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 line 1 is 561 nm line 2 is 491 nm line 3 is 440 nm and lines 4 8 are not available 3 1 6 Command Read Power Monitor Read the voltage on the power monitor photodiode Op Code 0x0A Notes not currently available with rs232 control Future versions will have this capability 3 2 Trigger Commands These commands define the function of the trigger in and out BNCs from the control box Contact Spectral Applied Research for more information on trigger controls 3 2 1 Exposure Configure Op Code 0x21 33 Bytes Sent 1 3M 1 lt M lt 20 Bytes 1 of exposure states value of 1 to M 2 to M 1 exposure states M 2 to 3M 1 exposure time Description This command defines the exposure parameters that the unit cycles through upon receiving a trigger in The number of exposure states determines the number of different shutter states that the unit will go through before repeating the cycle The exposure states give the shutter states for each exposure in the cycle The format is the same as the shutter control command so each bit in the byte indicates the state of the corresponding shutter The exposure time gives a series of unsigned 2 byte integers that define the exposure time of each sta
14. mple 0x22 0x01 0x02 0x00 Enables a Step trigger and requires two trigger in events for each step Notes Trigger In is positive edge TTL There is a jitter of up to 50 microseconds in processing the trigger in Motor control function and shutter control manual and usb are disabled while trigger is active Motor control is deactivated due to limited timing resources and speed of the MCU and shutter control is deactivated since shutter states are determined by the exposure configuration 42 43 Trigger Out Configure Op Code 0x23 35 Bytes Sent 4 Bytes 1 Enable 1 Disable 0 Trigger Out 2 State 0 Clock 1 driven mode 3 4 Exposure Time Description This commands enables the hardware trigger out The trigger out can either be state driven so a trigger out occurs every time the shutter changes exposure state or clock driven with the period between trigger outs is determined by exposure time For state driven the exposure time determines the delay from the state change to the trigger out The exposure time is in 0 1 msec increments with a maximum of a bit more than 6 5 sec The trigger out is a TTL pulse with a width of a few microseconds Example 0x23 0x01 0x00 0x03 0x AD Define a state driven trigger out with a delay of 0 0941 sec 0x23 0x01 0x01 0x00 0xC8 Define a clock driven trigger out at 50 Hz 20 msec delay Notes Motor movement is disabled when trigger out is active 4 24 4 Read Trigger In Configuration Op Code 0x25
15. ntrols consist of a three position momentary toggle switch labelled Intensity Adjust to select increasing or decreasing intensity direction or off The toggle switch is held to continue the motion in the selected direction It will stop when either the minimum or maximum point has been reached A particular filter wheel is selected by opening the associated shutter If more than one shutter is open the filter wheel associated with the last one opened may be driven A green indicator is provided for each filter wheel so that the operator can readily confirm which wheel is selected The indicators are identified by the label Intensity Select and by the laser position number 1 5 When a filter wheel is selected and the momentary toggle switch pushed for increasing or decreasing intensity the speed of the wheel starts off slow but increases if the switch is held in place The wheel takes about 10 seconds to change from maximum to minimum or vice versa hy Software Manual RS232 f Laser Merge Module model LMM5 S ECT L Document SU 586521 01 Rev A APPLIED RESEARCH 2 3 Power Monitor The LMMS contains a built in power monitor on the front panel of the head unit An input connector is provided to accept the fiber cable connected to the LMMS output A BNC connector is provided to allow measurement of the DC voltage produced by the LMMS output The power monitor consists of a photodiode with neutral density filter and a resistive load Thus the cu
16. ny serial communication programs prefer to send ASCII data Therefore to send one binary byte the control software should always send the equivalent hexadecimal value in ASCII representation This requires sending two bytes for every single byte of binary data Any command sent to the controller should terminate with a carriage return ASCII value 13 For example to send the binary sequence 0x1 A 0xFF 0x00 0x 12 the serial program should send the ascii string 1 AFFO012 lt CR gt or in ASCII values 49 65 70 70 48 48 49 50 13 Serial settings are 19 200 bps no flow control one stop bit no parity 8 data bits 7E Software Manual RS232 fef Laser Merge Module model LMM5 SPECT L Document SU 586521 01 Rev A 3 1 1 Command Shutter Control Set the open closed states of the shutters Op Code 0x01 Data 1 byte representing bit field for states of up to 8 shutters 1 indicates shutter open and 0 means shutter closed Return One Ack byte is sent as 0x01 and indicates that the command was processed and OxFF if there is any error Example Send 0x01 0x02 opens shutter 2 and closes all others Receive 0x01 operation is acknowledged Send 0x01 0x09 opens shutter 4 and 1 and closes all others Receive 0x01 Notes Shutters take 1 2 milliseconds to open so this command does not wait to see if shutters are set successfully before acknowledging Use the shutter status command to verify shutter states 3
17. ode 0x25 37 Bytes Sent None Return Returns the state of the trigger in setup in the same format as the trigger in configuration command Example Send 0x25 Receive 0x25 0x01 0x02 0x00 3 2 5 Read Trigger Out Configuration Op Code 0x26 38 Bytes Sent None Return Returns the state of the trigger out setup in the same format as the trigger out configuration command Example Send 0x26 Receive 0x26 0x01 0x00 0x03 0x AD 3 2 6 Read Exposure Configuration Op Code 0x27 39 Bytes Sent None Return Returns the exposure parameters in the same format as the exposure configuration command Example Send 0x27 Receive 0x27 0x02 0x17 0x06 0x 10 0x00 0x03 0x AD 3 3 Other Commands 3 3 1 Home Motor Op Code 0x11 Bytes Sent 1 Bytes Received 2 Description This command homes the specified motor and returns the number of steps to reach home Repeating this command gives the number of steps for a complete revolution Notes This command is only intended to be used for unit calibration and shouldn t be used by the end user hy Software Manual RS232 f Laser Merge Module model LMM5 SPECT Document SU 586521 01 Rev A APPLIED RESEARCH 4 TRIGGER IMPLEMENTATION GUIDE There are two types of TTL triggers available for the LMMS controller The 15 pin auxiliary connector provides TTL control of the laser shutters and adjustments of the laser intensity There are two BNC connectors that provide programma
18. r each trigger Further triggers will be disabled while cycling through exposure states 4 2 2 Trigger Out The trigger out can be set in two modes clock driven or state driven 4 2 2 1 State driven A TTL pulse will be sent every time the exposure state is changed 4 2 2 2 Clock Driven A TTL pulse is sent out at a regularly interval 42 23 Configuring the Trigger I byte to enable disable the trigger out 1 byte to specify state clock driven 2 bytes to specify the time between pulses in milliseconds between 0 1 milliseconds and I minute Control of the ND wheels will be disabled if trigger out is enabled This is a bit of a bother but is driven by limited resources on the microcontroller hy Software Manual RS232 f Laser Merge Module model LMM5 SPECT L Document ff SU 586521 01 Rev A APPLIED RESEARC 4 2 3 Trigger Flow Charts Figure 1 Trigger In Cycle driven flow charts Shutters Closed If State Trigger Shutter in State 0 Out Enabled Decrement Exposure Timer Exp and Decrement Trigger Out Timer Trig Out Trigger In No Trigger Out Yes If State Trigger Y Out Enabled Decrement Trigger Out Timer es Shutter in State 1 Decrement Exposure Timer Trigger Out Exp and ds Trig Out Trigger Out If State Trigger Yes Out Enabled Shutter in State N 1 uec cu m No 10 Vy Software Manual RS232 fef Laser Merge Module model LMM5 SPECI D Docum
19. rrent produced by the photodiode is converted to a voltage This can be measured by a voltmeter attached to the power monitor output connector or via an analog to digital converter by the computer 2 4 Microcontroller Interfaces Two BNC connectors are provided on the rear panel of the control unit Both are used to coordinate the LMMS with other experimental apparatus The Trigger In is used to control the on off cycle for laser illumination based on externally generated conditions A set of exposure states is defined and the trigger steps through these states in order The Trigger Out can be set in two modes clock driven or state driven For state driven a TTL pulse will be sent every time the exposure state is changed For clock driven a TTL pulse is sent out at a regularly interval 2 5 RS 232 Interface A 9 pin D subminiature connector female labelled Serial is provided on the rear panel of the control unit to allow serial communication with the microcontoller The arrangement is a standard DTE to DCE configuration and requires a straight cable to connect the control unit to a computer The pin out of this connector is as follows pin 2 Rx from DTE pin 3 Tx to DTE pin 5 ground 3 RS232 PROTOCOLS 3 1 Control Commands For further information contact David Cooper at cooper Q spectral ca or 905 326 5040 x405 Command structure The command structures listed in this document use binary values to issue the commands However ma
20. shutter The exposure time gives a series of unsigned 2 byte integers that define the exposure time of each state The exposure time is in 0 1 msec increments for a maximum of a bit more than 6 5 seconds The behaviour of the exposure time depends on the trigger in mode see below In Step mode the exposure time defines how long the shutter stays open before reverting to an all closed state In Cycle mode the exposure determines how long to wait before moving to the next state Example 0x21 0x02 0x17 0x06 0x 10 0x00 0x03 0xAD Defines two exposure states shutter 1 and 5 open then shutter 2 and 3 open with exposure times of 0 4096sec and 0 0941sec respectively 4 2 4 2 Trigger In Configure Op Code 0x22 34 Bytes Sent 3 Bytes 1 Enable 1 Disable 0 Trigger In 2 of trigger input before action 3 Define step 0 or cycle 1 trigger 15 7E Software Manual RS232 fef Laser Merge Module model LMM5 SPECT Document SU 586521 01 Rev A APPLIED RESEARCH Description This command enables or disables the trigger in input and defines the trigger behaviour Send 0 in the first byte to disable the trigger in and 1 to enable it Step trigger is defined by a 0 in the third byte and Cycle mode by a 1 See trigger documentation for behaviour of each mode The number of trigger inputs before action determines the number of trigger inputs to receive before taking action such as starting a state sequence or moving to the next state Exa
21. te The exposure time is in 0 1 msec increments for a maximum of a bit more than 6 5 seconds The behaviour of the exposure time depends on the trigger in mode see below In Step mode the exposure time defines how long the shutter stays open before reverting to an all closed state In Cycle mode the exposure determines how long to wait before moving to the next state Example 0x21 0x02 0x17 0x06 0x10 0x00 0x03 0xAD Defines two exposure states shutter 1 and 5 open then shutter 2 and 3 open with exposure times of 0 4096sec and 0 0941sec respectively 3 2 2 Trigger In Configure Op Code 0x22 34 Bytes Sent 3 7E Software Manual RS232 fef Laser Merge Module model LMM5 SPECT Document SU 586521 01 Rev A APPLIED RESEARCH Bytes 1 Enable 1 Disable 0 Trigger In 2 of trigger input before action 3 Define step 0 or cycle 1 trigger Description This command enables or disables the trigger in input and defines the trigger behaviour Send 0 in the first byte to disable the trigger in and 1 to enable it Step trigger is defined by a 0 in the third byte and Cycle mode by a 1 See trigger documentation for behaviour of each mode The number of trigger inputs before action determines the number of trigger inputs to receive before taking action such as starting a state sequence or moving to the next state Example 0x22 0x01 0x02 0x00 Enables a Step trigger and requires two trigger in events for each step Notes Trigg
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