User manual
Contents
1. Ei kk kk e 0 16 Type 4500 A duet ba oig datas ASTM E 1709 4 0 2 rl rmination angle e diyaye he bai 4 Illumination observation angle eee 0 2 Light source angular aperture sssneen 0 1 Receptor angular aperture ooooocccnnoncccnononcnnnnnancnnnoncnnnnnrn cnn nnnr emen 0 1 Type 4000 4500 Field of measurement eese 30mm 1 2in Liglit SOUrce eee ia eget Illuminant A Receptor sensitivity Precise eye corrected ASTM E1709para 6 4 2 for selected color filters Min reading CMA cti net ae ei eee eite ur 0 Max reading cd Ixxm llllii kk kk kk kK kk KA Typ 2000 Electrical characteristics EMO ata UEBER EO EN 50081 1 EN 50082 1 Power supply Battery iia Replaceable NiCd 9 6 V 1 2Ah Bosch part number 2 607 335 012 External charger ccccseeceeesseeeeeseneeeseseeeeeeseenenes Mains voltage 230 V AC Optional 120V 60 Hz Charge inni ce ec pecca Approx 15 minutes Data r iemoty En 1000 measurements Data retention from purchase Typ 5 years Interface c n Res Lees ete RE RS 232 Serial communication mode cesse 9600 N 8 1 Environmental characteristics Operation temperatUure uuuEE Ek k kk kK kK KK KK KK RA 0 o 45 C 32 F to 113 F Storage temperature cooocccincccnncccnoncnonccononcnnnnnorancnnnncnrnncn nn nc aran 15 C to 50 C 5 to 1229 F Hu rnidity trt2. GPS display off disable DGPS reception GP1 Turn GPS display on disable DGPS reception GP2 Set GPS display off enable DGPS reception GP3 Turn GPS display on enable DGPS reception Prompt code 47 code DGPS mode selection DG Return selected DGPS mode DGO Turn DGPS calculation off DG1 Set DGPS calculation to use WAAS correction satellites DG2 Set DGPS calculation to use EGNOS correction satellites DG3 Set DGPS calculation to AUTO to use available correction satellites Prompt code 46 code Log Data Extra DGPS information has been added to the LOG A typically log entry could look like this 25 52 2005 01 20 10 48 24 5 0 HX01 28 5552 4610N 01229 7505E 11 0 80 1 0 The last two bold values are the Instrument DGPS mode and the Received DGPS mode The Instrument DGPS mode can be 0 Off 1 WAAS 2 EGNOS 3 Auto The Received DGPS mode can be 0 WAAS 1 EGNOS 2 MSAS 3 DGPS 24 RetroSign Retroreflectometer
3. instrument If an error occurs during a measurement the Extension kit show Err Possible errors see the RetroSign manual If the lt R gt button is pressed while the RetroSign is turned off the display will show Err the moment the RetroSign is turned on This is not an error just push the lt R gt once again and the measurement is made Battery The battery should be changed at least once a year If the Extension kit is not used it will still use a small amount of power so do not mount the battery before use When the battery voltage is low the display will show LO BAT The battery type is DL123A 3V 1 300 mAh or similar 22 RetroSign Retroreflectometer APPENDIX D GPS DGPS Implementation The GPS function is activated when the GPS unit is attached and the GPS Option has been enabled Due to the fact that the GPS receiver first has to receive signals from several satellites before it can calculate its position it will take a short time before a Good Fix can be achieved typical this process will take from a few seconds up to 35 seconds depending on how long the device has been out of use and also on how far it has been moved away from the last fix position When a position has been calculated the GPS Icon appears in the top Icon row and the position and status will be updated the position and status data will only be displayed if GPS is set to ON in the menu The display will show No Fix w until the fi
4. others Non condensing 20 RetroSign Retroreflectometer Mechanical characteristics LGRGIR 3 abi a cec I e UE Ware Va de e ER 295mm 11 6 in Width r EUR RENE 83 mm 3 3 in aile peat E E E 324 mm 12 8 in Weight iii DERE NR RERUMS 2 1 kg 4 6 lbs A A O Approx 6 kg 13 2 lbs oDO EIEIEI 324 mm RetroSign dimensions RetroSign Retroreflectometer 21 APPENDIX C Quick Guide For Retrosign Extension Kit Connection The battery in the display module is mounted by unscrewing the bottom plate and removing the battery container Insert the new battery notice that the red wire of the battery container must be connected to terminal Assemble the Extension kit in reverse order Mount the Extension kit on the Extension pole by using the two screws and the black profile that is included in the package Connect the Extension kit to the RetroSign Getting started Turn off the RetroSign Take a measurement by pressing the lt R gt button on the Extension kit The display shows the measurement is an example 230 The result of the measurement is the same as shown on the RetroSign and the instrument is now ready for a new measure ment just press the lt R gt button ones again If no measurements are made the Extension kit will keep the RetroSign on for appr 4 minutes whereafter the Extension kit automatically will shut down The RetroSign will shut down according to the time out for the
5. sequence an error icon and error number is shown See also Section 3 Note on error sources Sequence id The RetroSign has a built in function to mark each measurement with a user defined name sequence id and a unique se quence number automatic generated by the instrument The sequence id and the sequence number will also be stored in the log The length of the sequence id text is 6 characters See Menu system Keyboard functions foo anm RetroSign Retroreflectometer 7 ON Clear OFF t V P Calibration lt l Enter Trig Push shortly to switch on instrument When switched on it clears the current operations Redisplays the last measuring result Turn of RetroSign Activate menu system Scroll key when in menu system Parameter and value increment decrement Activate menu for instrument calibration Activate selected function or accept changed settings Start R measurement Start fast calibration 8 RetroSign Retroreflectometer Calibration RetroSign features two levels of calibration fast and full Fast calibration is an everyday calibration using factory zero calibration and default reference value Default reference value can be changed only when using the full calibration mode Full calibration is used for high accuracy calibration of zero and reference Fast calibration la Fast calibration is initiated by pressing the e button and then the trigger Mount the reference cap reflect
6. the RetroSign responds with a question mark lt gt If the parameter exceeds the defined range for that parameter the RetroSign returns the present setting without any change RetroSign Retroreflectometer 17 Command set The following is a complete list of Commands and Actions Command BL T F DA yyy mm dd FV LA LC LD n n2 LO Action Display Backlight True False True enables display light False disables light Set year month date in real time watch DA without parameter returns current date and time from watch Returns Firmware Version Initialise Instrument settings Confirm with Y Query RetroSign instrument s n Return the instrument serial number Lamp current Alarm Returns set point for low lamp current alarm Lamp Current Returns the lamp current measurement from the last RM Log Dump Returns measuring number date time R mode and sequence id Each value are sepa rated by comma Data can easily be imported in a spread sheet e g Microsoft Excel LD without parameters will respond like this 1 2001 07 30 08 22 53 200 0 Roadxy 1 2 2001 07 30 08 23 42 385 0 Roadxy 2 3 2001 07 30 08 26 58 210 2 4 2001 07 30 08 27 58 296 0 Roadxy 3 End of Log File Column 1 measurement number 2 date time of measurement 3 measured value 4 mode 5 sequence id if any Mode indicates what kind of measurement was executed 0 normal measurement 1 fast cali
7. E en D UnEIDB REPE 22 APPENDIX D x sod xara iii 23 GS wa 23 DGPS Implementation essere eene nre 23 Controlling the GPS function from the menu system EUEELELEEEUEUUEU ELUj U 23 Controlling the GPS function from the computer interface 24 Log Data etti ee teuer ias 24 4 RetroSign Retroreflectometer Section 1 Introduction RetroSign introduction The RetroSign retrometer is a portable field instrument intended for measuring the retroreflection properties of road signs in car headlight illumination The value R coefficient of retroreflected luminance is used R is a measure of the lightness of the road signs as seen by drivers of motorized vehicles in headlight illumination The RetroSign is available in different versions For type 4000 the sign is illuminated at an angle of 5 and the angle between illumination and observation is 0 33 For type 4500 the sign is illuminated at an angle of 4 and the angle between illumination and observation is 0 2 This corresponds to an obser vation distance of 100 meters Thus relevant for a motorist viewing situation under normal conditions R is an important factor in the site quality control of road signs DELTA RetroSign Retrometer The operation of the retrometer is very simple and requires a minimum of instruction An error or warning message is given in c
8. RetroSign Retroreflectometer On site quality verification of road signs User s Manual r amp Acoust Denma 45 72 19 40 RetroSign Retroreflectometer 1 DISCLAIMER The information contained in this document is subject to change without notice DELTA MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTIABILITY AND FITNESS FOR A PARTICULAR PURPOSE DELTA SHALL NOT BE LIABLE FOR ERRORS CONTAINED HEREIN OR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES IN CONNEC TION WITH THE FURNISHING PERFORMANCE OR USE OF THIS MATERIAL Rev 13 07 2005 2 RetroSign Retroreflectometer Index SGOL OT T kis 5 INtFOCUCTION PN A E A AA ga 5 RetroSign Introduction rrei He pile dede need 5 RetroSign Retrometer Features seen 5 OPTIONS s iq E da E utar tds 6 SSO CUO 2 5 y k TT TAT 7 Operating Irifori atil i i iki y sinan Kir s k we kek kl da nn rre recerca 7 Gettind Started s Rte nte eie uibem 7 ICONS 2 seis M 7 ren a 7 Keyboard functioris nr e Dee PB REPRE 7 Calibre ates 9 Menu Syst oido x cn Eka aa sekan ut uat cte necati uentus ecrit de 9 Battery Charging s oxi it eene eb e i o EORR 10 Hemote control c i bei pe dee ec UR e eee GELAN 10 Support flange yy suk rptu ete t Ale ni y ke veka ke W ee etn t tac
9. ase of unreliable or erroneous measurement The RetroSign measures the retroreflection and calculates R according to international agreements Results are presented on an LCD panel The nonvolatile memory provides on site registration of measurements with corresponding date and time The RetroSign has a built in function to mark each measurement with a user defined name measurement id and a unique se quence number Data communication on the RS232 port gives extended command calibration diagnostics an data dump facilities The RetroSign is powered by a rechargeable battery giving several hours of measurement capacity A mains powered battery charger is supplied as standard RetroSign Retrometer Features e Portable self contained instrument e Measurement in full daylight e Photopic corrected detector and source A e Automatic stray light compensation and error diagnostics e Measurement geometry and illumination corresponding to realistic viewing condition in night time traffic e Direct digital read out e Real time clock e Automatic data storage in internal non volatile memory e S2332 serial communication for operation data dump extended control and diagnostics e Communication cable e Long battery life RetroSign Retroreflectometer 5 e 230 V 50 Hz or 120V 60 Hz mains powered battery charger e Automatic programmable power off function e Easy calibration procedure e Reference cap for calibration e Small support f
10. ata collection Use the RSC software to control the RetroSign Serial communication setup R232 interface 9600 baud No parity 8 bit 1 stop bit Selected commands LO Log Open Enables log for input LD Log Dump Number date time R mode RM R Measurement Start R measurement SD Status Dump Returns instrument settings and status On line help The RetroSign will return a brief help page of commands See also Appendix A Communication facilities 10 RetroSign Retroreflectometer Support flange The support flange is provided with cross hair markings lt makes it easier to decide the measuring position when taking meas urements on small objects e g letters and numbers on a sign Aperture Reduction For special measurement requirements on small targets the RetroSign can be mounted with a special aperture reducer adap tor this reduces the field of measurement to either g 15 mm 0 6 in or g 10 mm 0 4 in depending on the unit used The y 10 mm is supplied with the RetroSign To achieve the smaller aperture the reduction unit is simply mounted in front of the lens barrel Disable the Calibration Monitor when using the Reducer Disabling the calibration Monitor Press the t or until the display shows Calibration Monitor ON Disable Now Press lt l to Disable Enabling the Calibration Monitor Press the t or 4 until the display shows Calibration Monitor OFF Enable Now Press lt l to E
11. bration 2 full calibration 3 calibration via communication port RC command Including parameters to the LD command specify the log start number and the length number of lines If n2 are omitted data starts from log position n1 and to the end of the log file LD 50 5 will respond like this 50 2001 07 25 11 15 00 210 0 xyz a 34 51 2001 07 25 11 17 00 180 0 xyz a 35 52 2001 07 25 11 20 00 302 0 xyz a 36 53 2001 07 25 12 00 00 210 3 54 2001 07 25 13 15 00 235 3 xyz a 37 End of Log File A log dump can be terminated by any key Log Open Activates the built in log for storing measuring and calibration data Measuring number 18 RetroSign Retroreflectometer LR LS OT n RC n RM RR RZ SD SN nnnnnn TI hh mm ss TO TX T F VA VB VS date time R mode and sequence id are logged Only valid measurements and calibra tions are logged Log Reset Deletes all stored data The Log must be open Confirm with Y Log Stop Closes the log Measuring data is no longer logged Auto Off Timer n seconds 0 599 sec Set the time for automatic instrument turn off n 60 disables the automatic off timer RetroSign Calibration Use RC on the reference standard n calibration value from the reference standard RC without parameter returns the calibration value n R Measurement Executes measurement cycle Return R Same as using instrument tr
12. e character The Y button will scroll through the alphabet in opposite direction When the wanted character is shown press the button to advance to the next position You have to step through all 6 positions before the sequence id function can be accepted When typing a new sequence id text or editing an old one the sequence number is reset to 0 When all 6 positions are set to space the sequence id function is undefined and no longer included in the log nor shown in the display Mean Value Calculation The Mean value is calculated and displayed together with the number of measurements used for the calculation when two or more measurements are made in succession The Mean calculation is cleared whenever the instrument is turned OFF Calibrated or the ON C Key is activated The Mean value will not be logged Battery Charging Temperatures in excess of 50 C 122 F will damage the battery Do not short circuit the battery Do not dispose with house hold waste To remove the battery swing the battery retaining spring over and pull out the battery from the handle See Section 4 Battery for further information on charging Remote control External trigger By use of the connector on the rear of the instrument it is possible to remotely trig the instrument As an accessory an Exten sion pole kit can be supplied Serial communication The instrument is equipped with a serial communication port This allows complete instrument control and d
13. er is constructed for outdoor use in ordinary good weather conditions It will withstand moist weather but caution must be taken against rain or splashes and dirt form traffic The RetroSign retrometer is an optical instrument and shall be han dled as such Avoid exposing the instrument to shocks and vibrations Front Lens The lens does not need special maintenance If dirty carefully moist the lens with ordinary window cleaning liquid and clean it with a soft cloth Battery The instrument is powered by a Ni Cd battery which under normal use requires no maintenance A battery charger is provided as a standard accessory for charging the battery from mains To recharge the battery swing over the battery retaining spring and remove the battery from the handle Please refer to the enclosed charger instructions for operation A new battery or one which has not been used for an extended period will reach full performance only after approx 5 charging and discharging cycles The battery is equipped with a temperature monitor which allows charging only within a range between 0 C and 45 C 32 F and 113 F This ensures long battery life When used properly the battery can be recharged up to 1000 times A substantial drop in operation period per charge indicates that the battery is worn out and must be renewed The Battery and the charger are specifically designed for use in conjunction with one another Charging should be done only with the c
14. g the DGPS function from the menu system Use the t 4 keys to select the DGPS menu The display can show either DGPS Mode WAAS The DGPS mode is set to to use the WAAS satellites for position corrections DGPS Mode EGNOS The DGPS mode is set to use the EGNOS satellites for position corrections DGPS Mode Auto The DGPS mode is set to use the available satellites for position corrections DGPS Mode Off The DGPS mode is turned off the correction signals will be received but not used this can be desirable in situations where the correction satellites is very low on the horizon as would be the case at high latitudes also take note that using a correction signal from a Satellite designed to correct position data for a different region can result in degraded precession this would be the case when using WAAS in Europe RetroSign Retroreflectometer 23 In all cases the shown DGPS mode can be turned on or off by pressing the l key The active DGPS mode can be changed with the e key If DGPS mode is Off the e key toggles through the possible choices which then can be activated by pressing the Jl key If DGPS mode is On the e key changes the DGPS mode directly and the selected mode can be set off by pressing the l key Controlling the GPS function from the computer interface The GPS and DGPS modes can be set using a special Set DGPS Mode command send on the computer interface GPS DGPS commands GP Return GPS DGPS settings GPO Set
15. harger delivered with the instrument Do not expose the battery to heat or flames Danger of explosion Do not place the battery on a heater or expose to direct sunlight for long periods Temperatures in excess of 50 C 122 F will damage the battery Allow a warm battery to cool before charging When the battery is outside the instrument cover the contacts to avoid short circuits Avoid repeated consecutive rapid charges of the battery Do not recharge after using only briefly Note e The battery should be protected against impact Do not open the battery e Store the battery in a dry place e Due to environmental protection do not dispose the battery with household waste Lamp The lamp requires no maintenance At the end of the lamps service life the instrument will display a lamp error message and the lamp must be replaced The lamp must be replaced only by personal trained by DELTA RetroSign Retroreflectometer 15 Reference cap To make sure that the calibration of the retrometer is correct it is important that the surface on the reference cap is clean and undamaged Keep the cap protected and be careful not to touch the reference cap reflective side If the surface is stained scratched or broken the reference cap must be replaced In case of dust on the surface clean it gently by using a soft cloth with a mild household detergent Wipe carefully with dry cloth afterwards To ensure reliable measurements it is recomme
16. igger Read R Returns result of last RM command RetroSign Zero calibration RZ is a part of the instrument calibration procedure Use RZ on the reference cap s zero standard Confirm with Y Must be succeeded by the RC command Status Dump Return instrument status All settings and values are displayed Used for verification and trouble shooting Sequence if text Maximum 6 characters including spaces 6 spaces disables the sequence id text Set Tlme in real time TI without parameter returns current date and time from real time Turn RetroSign Off immediately Same as pressing the OFF button on the keyboard Text mode True False If TX is true RetroSign will return information to the serial port in plain English An instru ment power on 7X will always be false Voltage Alarm Returns set point for low battery warning icon Voltage Battery Returns actual battery voltage Voltage Status Returns battery voltage with and without lamp switched on Returned values are from last time the lamp was switched on Returns help menu RetroSign Retroreflectometer 19 APPENDIX B Specifications General characteristics Type 4000 Geometry iia un n ndi raa E AN Aa b AR EA d nA Din 67520 5 0 33 Illumination angle eeseeem a 45 Illumination observation angle ii kk I 0 33 Light source angular aperture l ii EEE kk kk kk KAYA 0 16 Receptor angular aperlUre
17. ive side before triggering Calibration is executed immediately Default instrument zero factory setting used Full calibration Fal Full calibration is initiated by pressing the e button and then l Follow the procedure displayed Zero s Mount the zero cap dark side on the instrument Press all when ready When hourglass disappears instrument is ready for next step in the calibration procedure Reference Mount the reference cap reflective side Edit reference value using t or 4 until correct Press lt l when ready When the hourglass disappears confirm with M when ready Cancel with the ON C button After a successful calibration the Al icon is active If for some reason the calibration fails values from the previous successful calibration are used This information is displayed immediately after calibration Reduced aperture option a When the instrument is configured for measurements with reduced aperture the calibration monitor should be disabled to avoid the Error in Calibration condition the display reflects the status for this option See also paragraph Aperture Reduction in this section for further information Menu System Press t or 4 to activate the menu system from top or bottom end respectively When the menu is selected use t and 4 to scroll through the functions To select the displayed function press 3 Menu points are Remove top data in log This function allows the user to delete the last
18. lange with cross hair e Aperture reducer 15 mm 0 60 in e Carrying case Options e GPS e Extension pole kit with remote trigger display and large support flange e Fast 12V powered battery charger approx 15 minutes e Battery extra e Aperture Reducer 10 mm 0 40 in 6 RetroSign Retroreflectometer Section 2 Operating Information Getting started Turn the RetroSign on by pressing ON C er After approx 2 seconds the display will show x Calibrate instrument if necessary see calibration Icons Instrument status and operational mode are signalled by the use of icons Icons are shown in the top line of the display H Instrument is calibrated and ready Menu selected Calibration selected Zero calibration in progress Reference calibration in progress Calibration Monitor Active for normal aperture Calibration Monitor Disable for reduced aperture Battery low warning Log is enabled Log is full Sensor is receiving data on the serial communication port amp El El j li J lli D Display backlight is on When Al is active the instrument is calibrated and ready for use Start a measurement by pressing the red trigger knob on the handle A beep indicates the start of the active measuring cycle The display shows an hourglass for the duration of the measurement approx 3 seconds A new beep signals the end of the measurement If any errors are detected during the measurement or calibration
19. measurement in the data log The deletion restores the Sequence ID text string and measurement counter from the log The deletion process can be continued until the log is empty Deleted data cannot be recalled Data log enable disable Log Open Clears built in data log Also shows the remaining space in the log as a percentage Press J to clear data log Off time power save Setting for automatic instrument power off When selected use f and y to edit off time Off time less than 60 sec will disable automatic power off Initialize instrument Initialize the instrument to factory default settings The instrument has to be calibrated afterwards The log data and sequence id are not affected but the log is closed afterwards RetroSign Retroreflectometer 9 Display light Enables or disables the display back light Press i to toggle operation When the display light is enabled the 3t icon is displayed The back light will illuminate for a moment when any key or the measurement trigger is pushed Clear Seq ID Clears the sequence id as if all 6 positions were set to spaces Press lt l to clear See also Sequence ID Sequence ID Old Seq ID If any sequence id is defined the id text and a sequence number is shown in the display To edit the sequence id press the button The cursor is placed to the right of the first character position Use the t button to scroll through the alphabet in direction 0 9 A Z starting with the spac
20. nable Sequence ID From firmware version 1 28 the valid range for the Sequence ID has been reduced to only allow for the space character numbers and the capital letters A to Z Note e RetroSign is an optical precision instrument handle with care e Store in clean an dry environment e Do not recharge after using only briefly e Check or change reference cap frequently RetroSign Retroreflectometer 11 Section 3 General Information RetroSign The RetroSign retrometer measures the R coefficient of retroreflected luminance parameter The R parameter represents the retroreflection of the road signs seen by drivers of motor vehicles by headlight illumination Physically the retrometer is a small hand held instrument It is constructed in an aluminium housing containing electronics and the optical system The measurement trigger button and the replaceable battery are housed in the handle The RetroSign is controlled by a micro controller The micro controller executes a measurement automatically when the trigger is activated and the result is shown on the display The result is automatically transferred to the internal nonvolatile memory if logging is enabled The RetroSign is operated from a small keyboard on the left hand side of the retrometer The retrometer control is also possible by a serial communication link RS 232 Stored data can be transferred to a PC for further processing Factory calibrations The retroSign
21. nded that the reference cap is periodically recalibrated to a traceable standard DELTA Light amp Optics offers calibration traceable to PTB Physikalisch Technishe Bundesanstalt For information contact your local distributor or DELTA Light amp Optics Denmark Reference Standard Zero Standard Reference CAP Calibration The RetroSign is factory calibrated but a calibration should always be carried out before starting a series of measurements After compensation of zero signal leakage and other known errors the calibration factor is easily calculated This is done automatically by the instrument if the calibration routine is followed After a calibration the retrometer will display true R Store the reference cap in a dry and clean environment See also Section 2 Getting started and Section 3 General information 16 RetroSign Retroreflectometer APPENDIX A Communication Facilities RS 232C specification The RetroSign is equipped with a communication facility that enables the use of a regular PC type computer for control of the RetroSign functions and for data dump from the internal data log The PC connects to the RetroSign using the connector on the rear and a special communication cable The cable is mounted with a 9 pin female connector for computer connection Use of a 9 to 25 pin adaptor may be necessary on some computers The electrical connections meet the normal standard for serial commu
22. nication Data protocol The communication between the RetroSign and the computer equipment takes place using the following settings Baudrate 9600 bit sec Number of data bit 8 Parity ree ERES none Stop bib eec 1 Command format All RetroSign commands are built using the following template Command Letters not case sensitive or lt gt Delimiter One or more spaces optional Parameter One or more interger or real numbers separated by space optional Parameters in square brackets are optional If no parameters are entered the actual value is returned Delimiter One or more spaces optional Command end Carriage Return CR mandatory The RetroSign can respond to a command in two ways data mode or text mode The RetroSign always powers up in the data mode This mode is used by the RSC Road Sensor Control program A special command TXT is used to set The RetroSign to respond in text mode The user should set the RetroSign to respond in text mode if a simple communication program is used instead of the RSC pro gram Example The user wants to set the automatic off timer to 120 seconds The command should look like this OT 120 CR or OT120 lt CR gt If the RetroSign accepts the command it responds 120 In text mode it responds with the message Automatic Off Timer 120 sec If for some reason the communication fails or the command is rejected
23. o 11 Aperture Reduction 11 OT e 12 General Information conet eren denle 12 RetroSignD tit e ibe ei N r AR e e a en 12 Factory calibiatiollS j Zin s kaban edle a eR ORDER 12 Type 40003 cco yeki b oto EE n va k r n 13 Type 4500 aur nh cette cec a AR I ED ede 13 B attety eee tee b ET 14 Note on error SOULC S nira l WELE a WEDE KER nhe nen nnne KEKE a 14 Section A e r E T 15 Maintenance 15 GerieraliCare leet iaa lente odias coli o Betel 15 Front Lens ee a aie e ted 15 Battery idt a 15 Latnp ee ounce e oet ea om qa tiereesetieas 15 Reference cap on IRL A 16 Galibratior s t ek d tes 16 APPEN be wc 17 Communication Facilities neueren eren eene nnne 17 RS 232C specification iti rd D t ieee does 17 Data protocol iic ep ede te d une DR X ete 17 Ale 17 Example n k A ER IPSE s 17 Command Seb intem uui et Bite 18 APPENDIX BD 4 x 5 4sy scarico i acerca dehak Kel as kasek ki We EF 20 Khu mL ii 20 RetroSign Retroreflectometer 3 General characteristics keke 20 Environmental characteristics EEE kk kk nn 20 Mechanical characteristics z id esee Annan 21 APPENDIX O EE 22 Quick Guide For Retrosign Extension Kit eee 22 A dee e pe ieee nd dE E dens ees 22 Getling started iie dd 22 STNE R
24. retrometer is factory calibrated This calibration is carried out by using a special reference The reference s R value is measured in the laboratory using traceable methods and equipment The enclosed reference cap can be used for verification or recalibration of the retrometer 12 RetroSign Retroreflectometer Type 4000 In the RetroSign the illumination angle is 5 and the offset between observation and illumination angle is 0 33 The measure ment area is approx g 30 mm Sign Illumination angle 5 Type 4500 In the RetroSign the illumination angle is 4 and the offset between observation and illumination angle is 0 2 The measure ment area is approx g 30 mm Or 215 mm g10 mm when using the reduced aperture adaptor According to ASTM R named RA Sign Illumination angle 4 Observation angle 0 2 E di ea g men A NE i RetroSign Retroreflectometer 13 Battery The RetroSign is powered by a replaceable rechargeable battery which under normal operation will keep the retrometer operat ing in several hours The battery must be recharged by the incluced external charger See also Section 4 Battery Note on error sources The RetroSign is factory calibrated Nevertheless begin important measurements sessions with a calibration See also Section 4 Maintenance The RetroSign can take measurements without being in close contact with the sign surface But
25. rst valid position has been calculated then the following GPS information will be shown Line 1 Latitude in the format ddmm mmmm and the Latitude Hemisphere N or S Line 2 Longitude in the format dddmm mmmm and the Longitude Hemisphere W or E Line 3 The Horizontal Dilution Of Precision HDOP value in the range from 0 10 to 99 99 the lower the value the more accu rate the position Fix The number of received satellites is also shown Line 4 The DGPS mode received by the GPS unit it can be GPS when no correction data is received WAAS when correction data from the WAAS satellites are used EGNOS when correction data from the EGNOS satellites are used unknown when ambiguous correction data Example Position for DELTA located in Hersholm Denmark Display meaning 5552 4610N 55 52 4610 N 01229 7490E 12 29 7490 E HDOP 1 09 11 HDOP 1 09 and 11 satellites used in calculation Mode WAAS Position correction based on WAAS satellites All GPS Position data and status are stored in the internal data log when enabled and can de retrieved with the normal Log Dump command A special version of the RSC program is needed to supports the new GPS facility Controlling the GPS function from the menu system Use the t 4 keys to select the GPS menu GPS On The GPS data will be displayed press the lt l key to turn this function off GPS Off The GPS data will not be displayed press the lt l key to turn this function on Controllin
26. to obtain the most reliable re sults the front of RetroSign should be in contact with the surface of the sign when taking measurements During each measurement the RetroSign automatically evaluates the optical leakage and the result are compensated before read out Leakage will under normal conditions not be significant Nevertheless it may occur and a warning will be shown in the display Leakage is primarily caused by stray light entering the optics between the sign and the instrument Instrument leak drift and offset errors are compensated for by means of data obtained during the calibration procedure so per form the calibration procedure carefully It is very important to keep the front lens and the surface on reference cap clean The optical property of a sign alters when the retro reflective material becomes wet The RetroSign can take measurements on wet or misted up sign surfaces but readings are not comparable with readings taken on dry signs Because of the special optical properties of micro prismatic sheeting some precautions should be taken to get correct readings Always use the RetroSign in the angle specified for the sign Typically RetroSign must be held in a vertical position The RetroSign retrometer is a rugged instrument but it is an optical instrument and must be handled as such Store instrument in a clean and dry environment 14 RetroSign Retroreflectometer Section 4 Maintenance General care The retromet
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