USER MANUAL - Stemmer Imaging
Contents
1. A GARDASOFT al LED USER MANUAL VTRI Strobe Light Revision 4 Gardasoft Vision Ltd Trinity Court Swavesey Cambridge CB24 4UQ UK Tel 44 1954 234970 Fax 44 1954 231567 Web www gardasoft com GARDASOFT 2 1 Disclaimer Except as prohibited by law n All hardware software and documentation is provided on an as is basis This information is for guidance only Installers must perform their own risk assessment specific to each installation It is essential that the user ensures that the operation of the product is suitable for their application The user must ensure that incorrect functioning of this equipment cannot cause any dangerous situation or significant financial loss to occur Deliberate acts of endangerment and vandalism are not covered by this document and must be considered by the installer While care has been taken in the preparation of this document Gardasoft Vision Ltd and Gardasoft Products Ltd will not accept any liability for consequential loss of any kind except those required by law All trademarks acknowledged Hardware software and documentation are Copyright 2002 2013 Gardasoft Products Ltd Hardware manufactured by Gardasoft Vision Ltd under licence GARDASOFT 2 Getting Started Read the sections on Safety Sections 3 and 4 and Specifications Appendix A and check the VTRI fulfils your requirements See the back cover for other Gardasoft Vision strobe lig2. Trigger input ve The trigger output circuit is as follows TRGO K AZ TRGO The trigger output can be used to switch a signal of up to 24V switching up to 20mA when on When the output is logic 1 on a current of up to 20mA can flow The maximum current must be limited to 50mA by the external circuit The forward voltage is less than 2V When the output is logic 0 off a voltage of up to 24V can be blocked 6 3 1 Ethernet Option The Ethernet connection is 10BaseT operating at 1OMbits per second 6 3 2 Serial Option The RS232 connections are as follows The communications port should be set to 115Kbaud no parity 8 data bits and 1 stop bit Connecting to the specified pin on a 9 way female D type will allow straight through connection to a PC COM port Signal Function Connection pin on a standard PC 9 way Female D Type GARDASOFT 10 7 General Description The VTR1 current controller provides repeatable intensity and timing control for strobe lighting Two modes of operation are provided for the light output Pulse Strobe In pulse mode output is pulsed once per trigger One trigger input is used as a trigger The delay from trigger to pulse the pulse duration and the brightness can be set E Switched In switched mode a trigger input can be used to switch the output current on and off The sense of the trigger signal can be active high or active low The set up is non volatile so the VTR1 will
3. retrigger delay in milliseconds This parameter is optional GARDASOFT 18 Set the Option Flags RE1 p Where p 0 P flag set positive triggers p 4 P flag cleared negative triggers Set Internal Trigger Enables or disables the internal trigger When enabled all outputs are triggered simultaneously using an internal trigger signal This setting can be saved to non volatile memory using the AW command TTO Disable internal trigger TT1 Enable internal trigger uses previously set period TT1 p Enable internal trigger and set the period Where p period of the triggers in milliseconds For example TT1 200 Set the internal trigger to 200ms 5Hz TT1 1S Set the internal trigger to 1 second 1Hz Save the settings to memory AW The results of the RW RT RE TT commands are all saved Once the settings are saved to memory they are then retained when the unit is switched off If this is not done changes to the settings are volatile and if the unit is switched off they revert to those in force when the last AW command was issued Clear Configuration CL Clears the configuration The results of the RW RT RE TT commands are all cleared Report the configuration ST Reports all the channel settings Typical output is CH 1 MD 1 S 100 0 DL 10us PU 1 000ms RT 1 020ms IP1 FLO CSO 000A RA24V Where the numeric values are MD Mode 1 pulse 2 switched S Brightness percentage setting DL Pulse delay PU Pulse width RT
4. 3 to destination port 30312 10 2 RS232 Communication When using RS232 the COM port should be set to 115200baud 8 data bits no parity and 1 stop bit with no hardware or software handshaking 10 3 Command Structure Communication consists of commands sent by the host controlling PC All output generated by the command is returned in reply UDP or TCP IP packets The last character sent is gt greater than symbol Once this is received the host knows that the command has been completed It is recommended that the host waits for the gt symbol before sending the next command UDP communications are not guaranteed to arrive so the host software should cope with lost messages Using the GT command a host can request that a message is sent to it whenever an error occurs Several commands can be put into one command line by separating them by a semi colon A carriage return character should be sent to terminate the command line The VTR1 will send any replies to the commands and then send a gt character to indicate that the command line has been completed Commands comprise a code of two letters followed by the parameters if any needed for the command Spaces in the commands are ignored Numeric parameters are separated by a comma For a parameter which is a time period the default units are milliseconds s ms or us can be added to the end of the number to indicate sec
5. Retrigger delay IP FL CS RA Unused GARDASOFT STO Reports the general settings Typical output is TM 1 TP 20 00ms Where Internal trigger 0 off 1 on TP Internal trigger period Simulate an Input Trigger TRI Simulates a trigger pulse If the channel is in pulse mode it will pulse Enable Ethernet Messages GTm m O to disable Ethernet messages to enable Ethernet messages When Ethernet messages are enabled any error reports are sent to the most recent UDP or TCP address from which a command has been received Messages are of the form Evtl e Where v event value 32to47 Lighting error code Clear any Errors GR If Ethernet messages are not enabled the last event or error number can be read by this command If there was a lighting error the VTR1 will resume operation The reply will be in the same form as the GT command above If there are no outstanding events or errors then only the prompt gt is returned Set Clear the Webpage Password EY EY ascl asc2 asc3 asc4 asc5 asc6 This command sets the password required to access the webpages If EY is entered on its own then the password is cleared There are six optional parameters which are decimal ASCII values for a password from one to six letters A value of 65 is A 66 is B etc to 90 is Z 20 GARDASOFT 10 3 2 Command Summary e e ee p fea remanen oe RT1 3 100us 50 Set light to strobe with 3ms pulses de
6. address can be set and read the VTR1 Configuration Program available for download at www gardasoft com 8 2 2 Automatic Sensing All the features below are implemented in a Configuration Program with C source code available from www gardasoft com The VTR1 will send out a message on three events On power up When an IP address is received or renewed by DHCP When an enquiry message is received On the first two events the message is broadcast On the third it is a reply to a single IP address An enquiry message is a UDP packet from source port 30310 destination port 30311 with the message body Gardasoft Search 8 bit ASCII 13 characters The message output by the VTR1 is a UDP packet from source port 30311 destination port 30310 It is formatted as Gardasoft VTR1 000000 111111111111 22222222 8 bit ASCII 44 characters where 000000 the serial number of the unit 111111111111 the MAC address in 6 HEX bytes 22222222 the IP address in 4 HEX bytes For example for VTR1 serial number 12345 IP address 192 168 1 103 MAC address 00 0B 75 01 80 99 the packet contains Gardasoft VTR1 012345 000B75018099 COA80167 GARDASOFT 9 Webpage Configuration This applies to the Ethernet version only The VTR1 has a webserver inside so that it can be configured from a standard web browser such as Internet Explorer The IP address of the VTR1 must be known see section 7 on Ethernet Address Open a web browser window a
7. e previous trigger are ignored The retrigger delay is set in multiples of 100us The delay pulse width retrigger delay and pulse intensity are all configurable 7 2 Switched Output Switched mode uses the trigger input to switch the output on or off using the timing of the trigger signal The output brightness can be varied from 0 to 100 The VTRI applies the same duty cycle and pulse width limits as for pulse mode to prevent the light being damaged 7 3 Internal Trigger Timer An internal timer is available for continuous triggering in pulse mode The period of this timer is configurable Note that the internal timer is mostly used when synchronising a camera using the trigger output It is generally not possible to run the light strobe from this timer while free running the camera They will not stay synchronised and the images will have very variable intensity When this timer is turned on the light strobe pulse and the trigger output are both triggered by this timer External triggers still work When troubleshooting during development it is sometimes useful to set this timer to give regular light pulses 7 4 Trigger Input Option An optional trigger input signal is available The trigger input is used as follows Switched Trigger input off Output is off if P flag 1 Output is on if P flag 0 Trigger input on Output is on if P flag 1 Output is off if P flag 0 GARDASOFT Pulsed Trigger rising edge P
8. hts Mount the VTR1 as described in Section 4 Connect the VTR1 up to a supply as described in Connections Section 5 Set up the VTR1 for the desired operation as described in Configuration Commands Section 9 Visit www gardasoft com for application notes on this product There is also a Support page which has information on troubleshooting problems 2 1 Summary of Features Throughout this manual references to the VTR1 refer to all variants in the VTR1 range unless otherwise stated The convention for the part number is VTR1 mm www aa ccc where mm M for master only MS for master slave pair www Wavelength of light in nanometres 740 850 940 W white aa Beam angle in degrees 12 or 30 ccc Communications ETH RS232 GARDASOFT 4 3 Safety Read this before using the VTR1 Always observe the following safety precautions If in doubt contact your distributor or Gardasoft Vision The following symbols mean A Warning read instructions to understand possible hazard A Warning Possible hazardous voltage A Warning Surface may get hot Where these symbols appear in the manual refer to the text for precautions to be taken 3 1 Heat A The VTR1 can dissipate up to 5W It should be positioned away from flammable materials Read the section on Mounting the VTR1 Section 5 Do not exceed the power ratings given in the manual 3 2 Electrical The internal circuit exceeds 46 7V but should not exceed 60V Pulse peak
9. layed by 100us at 50 brightness RE1 4 Trigger on falling edge of trigger input TT1 100ms Set internal triggers every 100ms GARDASOFT 21 A Ratings The electrical ratings of the connections are Power Input 24VDC 10 Maximum ripple 10 Other power supply options available Trigger Input Opto coupler input OV to 2V is a logic 0 5 to 24V is a logic 1 drawing between 3 5 and 22 5mA Trigger Output Opto coupler transistor output Maximum switched voltage Vceo 24V Load current should be externally limited to 50mA max GARDASOFT 22 B Restrictions The minimum pulse delay for the light pulse output is about 2us When using the retrigger delay the minimum delay is around Sus For pulse widths less than approximately 100us fault detection does not operate GARDASOFT 23 C Error Codes Error number Reason A parameter value is invalid Numeric value is wrong format This is a warning not an error One of the parameters is out of range The value of the parameter has been adjusted For example sending an RT command with a delay of 0 will get a reply of Err 5 The command will be accepted and the delay set to the minimum allowed EEPROM corrupt The configuration has been cleared Couldn t save settings to EEPROM Can t read Ethernet settings from EEPROM so these may be incorrect The VTR1 is too hot The VTR1 has a thermal cut out that operates at about 65 c to 70 c depending
10. nd type the IP address for example 192 168 1 71 of the VTR1 into the URL box at the top The main page of the VTR1 webserver should be shown 9 1 Main Page The main page shows general information about the VTR1 Links are provided to the configuration pages 9 2 General Setup Page The General Configuration page allows the webpage protection password to be set or cleared and the internal trigger to be set up Also any Ethernet command from section 10 can be entered Test Mode referred to on this page is the internal trigger timer 9 3 Light Configuration Page This page allows the parameters for the light output to be set up Press the Submit button to update the VTR1 and save the changes to non volatile memory Some measured values are displayed on this page 9 4 Trigger Output Configuration Page This page allows the parameters for the trigger output to be set up Press the Submit button to update the VTR1 and save the changes to non volatile memory GARDASOFT 16 10 Configuration Commands The VTR1 can be configured via the Ethernet connection using UDP or TCP IP A configuration program with source code is available for download from www gardasoft com 10 1 Ethernet Communication For TCP IP commands from a host are sent to destination port 30313 with replies received from port 30312 For UDP commands from a host should be sent from source port 30312 to destination port 30313 Replies are sent from source port 3031
11. on conditions Any other errors are internal errors D Event Codes Event messages are sent when an error occurs The format of these is Evt lt channel gt lt event code gt These event messages are only sent after the GT1 command has been sent 1 to 127 An error has occurred The error code is given by the event number The temperature of the light is too high and operation has been stopped The allowed duty cycle is now normal after event 149 The allowed duty cycle has been reduced due to high internal temperature GARDASOFT 24 Gardasoft Traffic Strobe Lights The products available at the time of writing include the following Other products are also available See www gardasoft com for details of the current range VTR1 Range Up to 300W per steradian output power Infra red 740nm 850nm 940nm and white options RS232 and Ethernet options Trigger input and trigger output options 12 degree and 30 degree beam angle options VTR2 Range Up to 3000W per steradian output power Infra red 740nm 850nm 940nm and white options Ethernet and RS232 options Trigger input and trigger output options 12 degree and 30 degree beam angle options
12. onds milliseconds or microseconds For example Note that parameters are in USA UK format so that a half is written 0 5 not 0 5 GARDASOFT 17 The command codes and their meaning are described below The upper case commands are shown followed by lower case letters denoting the numeric argument A parameter value is invalid Command not recognised Numeric value is wrong format Wrong number of parameters Err 5 This is only a warning A timing parameter was out of range and has been adjusted to a valid value Any changes made using Ethernet commands are not saved permanently until the AW command has been issued 10 3 1 General Commands Reports the version of firmware running in the VTR1 VR This command returns the firmware version For example VTR1 HWO01 V001 Set switched mode The output is set to switched mode at a percentage of full brightness RW1 s Where s setting in percent s 0 to 100 Set pulse mode The output can be set up to pulse on a trigger input The delay from trigger to the start of the pulse the length of the pulse and the brightness are configurable An error is generated if the brightness setting requires a current greater than 20A or if the combination of pulse width and setting is not allowed RT1 p d s RT1 p d s r Where p pulse width in milliseconds 0 01 to 3 d delay from trigger to pulse in milliseconds 0 01 to 999 s setting in percent s 0 to 100 r
13. resume the same operation after a power cycle 7 1 1 Pulse and Duty Cycle Limits In both pulsed and switched modes the pulse width and duty cycle are internally limited to prevent damage to the light The brightness can be set up to 100 but only for short periods and at low duty cycles so that the lighting does not overheat and get damaged In pulse mode the duty cycle is limited by ignoring triggers which are too soon after the previous trigger Allowed Pulse Allowed Duty Allowed Pulse Allowed Duty Width for 850nm Cycle for 850nm Width for white Cycle for white and 940nm lights and 940nm lights and 740nm lights and 740nm lights Output Brightness 0 to 20 21 to 30 31 to 50 51 to 100 So for example if the brightness is set to 40 then a VTR1 850 will not allow pulses greater than 3ms long With 1ms pulses if a trigger occurs within 33ms of a previous trigger so that the duty cycle would be greater than 3 the trigger is ignored If necessary the VTR1 will limit the duty cycle by increasing the retrigger delay When the VTRI internal temperature gets too high the allowed duty cycle is reduced and event 149 is generated This typically happens at 60 C GARDASOFT 7 1 2 Pulsed Output The output is off by default When the VTR1 is triggered it will wait for a delay and then pulse the output Retrigger delay is the minimum allowed time from one trigger to the next Any triggers that happen too soon after th
14. rogrammed into the unit or using DHCP Most networks use a DHCP server If there is a PC on the network you may be able to find out whether a PC on the same network uses DCHP as follows Go to Control Panel Select Network Connections Right click on Local Area Connection Select Properties From the list select Internet Protocol TCP IP press Properties If Obtain an IP address automatically is set then DHCP is probably used However there may be an alternative fixed IP address on the Alternative Configuration tab You can find out what IP address is being used by a PC at any time by e Go to Control Panel Select Network Connections Right click on Local Area Connection Select Status Select the Support tab The IP address is displayed When using fixed IP addresses it is necessary to ensure that you use an IP address that is not being used by any other device on the network It is usual to keep the first three numbers of the IP address the same as other devices and to change only the last number For example if you have a network consisting of a PC IP address 192 168 1 35 and two VTRIs you might give them addresses 192 168 1 201 and 192 168 1 202 8 2 1 Programmed IP Address and DHCP For DHCP mode the VTR1 acquires its IP address subnet mask and gateway address from a DHCP server Otherwise the VTR1 has a fixed IP address subnet mask and gateway address GARDASOFT 14 DHCP mode or the IP
15. st 1A The use of a regulated power supply with 100 short circuit protection is recommended If however a non regulated power supply is used then the maximum ripple voltage of this power supply must not exceed 10 of the actual DC value GARDASOFT 8 Low voltage and mains wiring should be routed separately If they must be loomed together ensure that low voltage insulation rating is sufficient or that supplementary insulation is used Power supply cable length is recommended not to exceed 3m If longer cables are fitted or if surge or transient interference greater than 60V may occur on the power supply lines additional surge protection should be provided 6 2 Trigger Input Option There is an optional opto isolated trigger input The opto isolator isolates voltages up to SOV TRGI ve Trigger input ve TRGI ve Trigger input ve The trigger input circuit is as follows TRGI 3 5mA LIMIT Tia Pa TRGI The trigger input circuit operates as follows When a voltage of 5V to 24V is applied across TRGI ve and TRGI ve the trigger input is logic 1 on When a voltage of OV to 2V is applied across TRGI ve and TRGI ve the trigger input is logic 0 off The trigger input takes about 3mA at all voltages from SV to 24V GARDASOFT 6 3 Trigger Output Option There is an optional trigger output which is opto isolated The opto isolator only isolates voltages up to 50V TRGO ve Trigger input ve TRGO ve
16. t View o 0 ia 7 ise o oj H amp N i O O 1 eB 63 2 off M6 x LOmm Threaded Stud 5 1 Heatsinking The approximate heat dissipation of the VTR1 can be calculated as follows HD 0 25 BR PW TF 2 Where HD Heat dissipation W PW Strobe pulse width seconds TF Maximum trigger frequency Hz BR Brightness of the light output Given the range of ambient temperatures and radiated sunlight the installation must provide enough heatsinking on the rear surface to keep the internal temperature of the VTR1 below 70 c GARDASOFT 6 Connections See the Specification Appendix A for information on connection ratings Assembled cables are available from Gardasoft Vision to the customer s specification All connections are provided on a 10 core cable The wire allocation depends on the options provided Wire Colour Eihemnet RS232 version version Paes T Powersin Powers Brown TRGI Grey No connect E RS232 TX Pink Ethernet TX output from VTR1 RS232 RX Yellow Ethernet RX input to VTR1 Green Ethernet RX RS232 GND Orange TRGO TRGO Purple TRGO TRGO 6 1 Power Supply Choose a PSU that limits its output current by design by setting the current limit on the supply if this feature exists or use fuses Remember to derate the fuse if mounted in an enclosure as the temperature will be higher than ambient The external power supply will need to be able to supply at lea
17. ulse is triggered if P flag 1 Trigger falling edge Pulse is triggered if P flag 0 Note that the P flag inverts the sense of the trigger input 7 5 Trigger Output Option This optional factory fitted option when fitted can be used to trigger a camera It can be used for pulse width exposure control of the camera The trigger timing for the light and camera can be adjusted relative to each other This output is triggered at the same time as the light strobe output The delay and pulse width for this signal can be controlled independently of the light pulse 7 6 Factory Settings The default VTR1 configuration for the light output and trigger output are Pulse operation lms pulse width 0 01ms delay 50 intensity 30ms retrigger delay The CL command can be used to restore the VTR1 to its default configuration GARDASOFT 13 8 Ethernet Address Ethernet Version Only You may need to ask your network administrator for advice about setting up the Ethernet connection Ethernet set up is not affected by cold booting the VTR1 8 1 Connection The Ethernet link uses a 10 base T connection on an RJ45 connector Typically the VTR1 will be connected to a network switch or hub or router although it is possible to connect it directly into the network port on a PC by using a suitable crossover cable 8 2 IP Address The VTR1 needs an IP address to communicate over Ethernet There are two methods to get an IP address either p
18. voltages above 46 7V are considered hazardous Do not have the cover removed with the power on Do not open the cover within 1 minute of turning the power off The VTR1 does not have complete tracking isolation of inputs and outputs 3 3 General A The VTR1 must not be used in an application where its failure could cause a danger to personal health or damage to other equipment If the equipment is used in a manner not specified by the manufacturer the protection provided by the equipment may be impaired GARDASOFT 5 4 VTRI1 Eye Safety 4 1 The VTR1 has been classified for eye safety according to IEC62471 as follows VTR1 740nm versions Risk Group Exempt VTR1 850nm versions Risk Group 1 VTR1 940nm versions Risk Group 1 VTRI white versions Risk Group 2 4 2 Disclaimer This information is for guidance only Installers must perform their own risk assessment specific to each installation While Gardasoft Vision has taken every care in the provision of this information Gardasoft Vision and Gardasoft Products accept no liability for damages of any kind except those required by law Deliberate acts of endangerment and vandalism are not covered by this document and must be considered by the installer GARDASOFT 5 Mounting the VTR1 Top View Master 65 Rear View Righ
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