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Imp XL users manual

1. Page 30 TAKING A HEIGHT MEASUREMENT Button Action Result example Aim to the top of pi RIGH HT INC the object even if you can t sight a it and press D Fire to take the top inclination reading DNLD Press Fire to display the height of the object expressed in feet or meters When the procedure completes the height calculation is showing in the middle of the screen and the HD indicator is blinking signifying that the instrument is prepared to take a horizontal distance measurement of another target At this point you have several options e Pressing Forward downloads the height measurement you just took e Pressing Fire takes the horizontal distance measurement for another HT procedure e Pressing Back backs up so you can retake one or more measurements Note that the indicators do not blink in this instance Any measurement you retake affects the final height calculation To clear the HD measurement long press Back Multiple short presses back you out to the main display level which also clears the measurement Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 31 TAKING A HEIGHT MEASUREMENT If you are measuring in feet be aware that your The best heights for tapered objects such as horizontal distance measurement will be trees or non vertical objects are
2. enn 26 POWER CONSERVATION INTERVALS 26 Hin OFTHE O TAKING A HEIGHT MEASUREMENT 29 OO A SIGHTING eene 7 FRONT AND BACK PANELS eee 8 E 1 OPTIONS AND 9 DIFFERENCE MEASUREMENTS 2 2 33 CUMULATIVE MEASUREMENTS MEASUREMENT MODES eere 10 MEASUREMENT MODIFIERS 1 1 TARGETING 38 INDICATORS WARNINGS cete 12 LISTENING TO THE INSTRUMENT 4 39 SETTINGS OPTIONS eee 13 SETTING THE RANGE OFFSET eene 40 ERROR CONDITIONS c scssscsessessecsscsecsscsecsscsecescseees 15 SETTING A GATE WINDOW esee 4l USING THE BUTTON PANELS 16 Turning On the 42 A Setting a Short Gate Value 42 SETTING UP FOR LEFT HANDED Setting a Long Gate Value ss 43 1 444244 00400 0 0704 4 19 Clearing Gate Values e 43 SWITCHING THE HAND STRAP O MURUS 19 NOTES ON MEASUREMENT MODIFIERS 2852222 0125 44 RECONFIGURING THE BUTTON 58 20 Electronic Copy LTI s Impulse XL User s Manual 27 Edition
3. December 1997 TABLE OF CONTENTS THE EDIT 46 COMPASS 25 67 DOWNLOADING DATA erret 48 SA A 67 DOWNLOADING eene ene 48 NOTE FOR CRITERION 68 THE DNLD OPTION eee 49 CARE AND MAINTENANCE 7 7 1 69 OPTIONAL REMOTE 4 42400 0 4 50 OPERATING TEMPERATURE eerte 69 SERIAL INTERFACE SPECIFICATIONS 22 MOISTURE AND DUST PROTECTION sss 69 IMPULSE IP200 OR IP100 FORMAT 2 32 SHOCK PROTECTION sscsssssssssssesssecssecesecssecsseeeses 69 Q eries coro rene been 52 CLEANING AND STORAGE esses 69 Download Messages eene 22 CARING FOR THE SCOPE eee 70 CR400 54 CHECKING THE DISPLAY 70 NMEA 8 54 CHECKING THE BATTERIES 70 Queries A era 54 REALIGNING THE SCOPE neosneneno 71 Download Messages sese 33 ALIGNING THE TILT SENSOR ON THE 200XL 33 SPECIFIC MESSAGE 58 2 56 SPECIFICATIONS caricias 77 Version ID eicit stets tiere hte 58 Basic Measurement amp Horizontal Vector 29 Range Difference eese 61 Range Cumulative eese 62 Height ite etit dienen 63 USING A TRIPOD OR MONOPOD 64 pio dE 64 MOUNT iet RES 65 Electronic
4. Rear of instrument Electronic Copy LTI s Impulse XL User s Manual 27 Edition December 1997 Page 3 GETTING STARTED QUICKLY Taking a Measirement When you power on the instrument for the first time the LCD screen on the rear panel shows this display The indicator RIGHT in the upper left quadrant of the screen means you are using the right hand button panel as your primary control panel Electronic Copy LTI s Impulse XL User s Manual 27 Edition December 1997 The indicator HD means the instrument is prepared to take a horizontal distance measurement The slope distance indicator SD will appear on the 100XL model The M means the measurement will be taken in meters No indicator in this location would mean the measurement will be taken in yards To take a measurement aim to a convenient target an interior wall will do press the rear most button on right panel the same button you used to power on the instrument and hold it down until the instrument acquires a target You might not notice any difference the first time you press the button in that case just press it again As a power conservation measure the red dot sighting scope automatically turns off its Page 4 GETTING STARTED QUICKLY red dot if a measurement has not been taken within a predetermined time limit With this scope the first press will turn on the red dot the se
5. 200XL only Tilt reading over 90 degree limit on 96 slope or height measurement Reposition and retake measurement 200XL only Tilt calibration error See the Care and Maintenance section of this manual E52 Temperature too hot Stop operation Temperature too cold Stop operation Calibration or code memory checksum failure Contact Laser Technology Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 15 USING THE BUTTON PANELS You control the Impulse through two 3 button panels on either side of the instrument One panel is always designated the primary button panel the other the secondary panel You can tell which panel is primary by the LEFT or RIGHT indicator showing in the upper left quadrant of the back panel display screen The two button panels are identically laid out The button nearest the rear panel is the Fire button The middle button is the Forward button And the button nearest the front panel is Back In the Impulse lexicon buttons on the primary control panel are referred to by the button name while buttons on the secondary panel are referred to by the name suffixed with a 2 So Fire means the primary Fire button Fire2 means the secondary Fire button rear of instrument display side e Button 1 Fire Button 3 Button 2 Back Forward Left side Button Panel rear of instrument display side Button
6. Long press Back to clear the value and press Fire to accept the cleared value 8 Place the instrument on its base on a level desk or table Align the long edge of the instrument with the edge of the desktop or tabletop 9 Press Fire If the instrument does not begin a series of regularly spaced tones press Fire again You will have two seconds to stabilize and quiet the instrument before any measurement is taken 10 Rotate the instrument precisely 180 degrees and press Fire once more Again you will have two seconds to stabilize and quiet the instrument before any measurement is taken Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 11 12 13 Press the Fire button The instrument computes and displays a tilt offset value Press Fire to use the computed value Scroll back to the main display and scroll to the INC indicator Take two inclination readings using the same desktop and rotation procedure used previously The two readings should be within 0 05 degrees one another Reset your power conservation interval to that of normal usage Note The additive offset procedure can be performed with a higher degree of accuracy by setting up two targets 15 to 30 meters yards away The center of each target must be level with the center of the scope lens and they must be facing each other Page 75 CARE AND MAINTENANCE This procedure requires an accurately aligned scope F
7. desktop additive offset which is also the factory calibration method or the opposed targets additive offset procedure which is described after the desktop method Page 73 Computing the subtractive offset value requires this procedure 1 If necessary realign the scope 2 Make sure the instrument reads degrees and percent slope is turned off 3 Position the scope so its center is aligned with a previously determined level target Note The scope must be properly aligned for this calibration to be accurate 4 Take an inclination measurement and note down the value 5 Return to the SYS CAL option and press Fire2 to enter the editor 6 Editin the value Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 7 Return to the INC option and measure the same target again The inclination measurement should be 0 00 To compute the additive offset follow this procedure Make sure the instrument reads degrees and percent slope is turned off Set your power conservation interval to 5 minutes 60 seconds or ALL On Clear the range offset to zero Scroll to the SYS option and press Fire Press Forward until CAL begins blinking in the lower right portion of the display window and the center of the display screen shows dashes Press Fire2 to display the subtractive offset value Page 74 7
8. list is followed by a comma The maximum value for any measure ment is 999999 the minimum is 99999 Since the instrument cannot measure more than a few thousand meters or yards the maximum possible values can only be obtained through cumulative distance measurements or by using a large offset dunits specifies the units for distance measurements Legal values F feet M meters aunits specifies the units for angular measurements Legal values D degrees G gradients 200XL only Electronic LTI s Impulse XL User s Manual 27 Edition December 1997 Page 53 DOWNLOADING DATA csum is an asterisk followed by a hexadecimal checksum The checksum is the result of a complemented no carry binary addition of all the characters between the dollar sign and the asterisk CR is a carriage return CR400 Format NMEA Compliance The Criterion 400 data format follows the guidelines of the NMEA 0183 Standard for Interfacing Marine Electronic Navigational Devices Revision 2 0 NMEA 0183 provides for both standard and proprietary data formats Since none of the standard formats are useful for the data transferred from the Impulse special proprietary formats are used Rules described in the NMEA standard governing general message structure leading and trailing characters numeric values delimiting character checksums maximum line length data rate and bit format are followed exactly As required b
9. 0 32 PLTIT HV OF Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 59 DOWNLOADING DATA Impulse Model IP100 format Message CR400 format Message 100XL Query BM Response download BM 28 M D 41 Bad reading or null data BM Query PLTIT RQ HV Response download PLTIT HV 28 M 20 Bad reading or null data SPLTIT HV 67 Response download with dummy HD field PLTIT HV 28 F 0 00 D 28 M 36 Response download with dummy HD amp azimuth fields PLTIT HV 28 M 0 00 D 0 00 D 28 M 67 Bad reading or null data with dummy HD amp azimuth fields PLTIT HV 0 00 D 3D Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 60 DOWNLOADING DATA Range Difference Impulse Model IP200 format Message CR400 format Message 200XL Query Query RD PLTIT RQ RD Response download Response Download RD 41 2 M D4 PLTIT RD 41 M 2 M 75 Bad reading or null data Data unavailable RD 41 M 33 PLTIT RD 6F RD 5 Impulse Model IP100 format Message CR400 format Message 100XL Query Query RD PLTIT RQ RD Response download Response Download RD 41 2 M D4 PLTIT RD 41 M 2 M 75 Target measurement only Target measurement only RD 41 M 33 PLTIT RD 41 M 27 Bad reading or null data Bad reading or null data RD E5 PLTIT RD 6 Electronic Copy LTI s Impulse XL User s Man
10. 1 Button 3 Fire Button2 Back Forward Riaht side Button Panel Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 16 USING THE BUTTON PANELS Because the Impulse features some fairly complex operations but has a total of only six buttons to effect those operations the specific function assigned to a button differs with e the operation e whether the button is on the primary panel or secondary panel and e how long you hold the button down A short press of a button simply means you press it and release it immediately A long press means you press the button and hold it down for about two seconds In general Forward and Back move through menus and Fire selects options while the secondary buttons control the scope aiming dot display backlight and edit mode Specifically the buttons have the functions indicated in the table on the next page Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 17 USING THE BUTTON PANELS Button Y OE Powers on the instrument For options with submenus HT GATE MULTI SYS selects the option For measurement options SD HD VD INC initiates a measurement by firing the laser With red dot sighing scope the first press turns on the red dot if it is off the second press fires the laser In system setup functions selects or toggles values
11. 2 Edition December 1997 Page 70 Checking the Batteries You can check the battery voltage level by scrolling to the SYS BATT option The numeric display area shows the current voltage reading of the batteries Should the batteries run low during measurement operations the BATT indicator blinks If you continue operations and the batteries run down further a Lob message displays on the screen If you fail to change the batteries at that point the keys will lock out Realigning the Scope The scope may become misaligned by a heavy blow to the instrument Periodically follow the procedure in the table below to verify that the laser beam is hitting its target and to correct it if necessary The point of the procedure is to align the laser s point of impact with the scope s aiming dot or crosshair using sound to indicate when the Scope is on target To align the scope properly you need e Aflat head screwdriver to turn the scope adjustment screws e A target at which to aim the instrument A highly stable base for the instrument A tripod is recommended Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 71 The target that you choose is critical to the success of the alignment operation It should be a reflecting target large enough to be seen clearly from a distance but small enough to be a highly
12. Copy LTI s Impulse XL User s Manual 2 Edition December 1997 eened Page 68 Cleaning and Storage Operating Temperature The instrument components are rated for a temperature range of 30 C 22 F to 60 C 140 F Do not expose the instrument to temperatures outside that range Moisture and Dust Protection The instrument is sealed to provide protection from normally expected field conditions It is protected from dust and from rain and features temporary submersion resistance Shock Protection The Impulse is a precision instrument and should be handled with care It will withstand a reasonable drop shock If you drop the instrument however check the scope and tilt alignment 200XL only before using the instrument for measurement Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Clean the instrument after each use before returning it to its case Check for all the following items Excess moisture Towel off excess moisture and air dry the instrument at room temperature Exterior dirt Wipe exterior surfaces clean Use isopropanol to remove dirt and fingerprints from the scope exterior Dirty lenses Use a lens brush to remove surface dust and loose particles from the front panel lenses Clean each lens by moistening it with a lens cleaning solution and wiping it with a clean cloth or lens tissue If paint spatters on a lens let it dr
13. D C A gt Height measurement The instrument first calculates AD then measures angles CAD and DAB It then calculates BD and DC The height is the sum of BD and DC Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 The Impulse implements the process with the HT option The option works by requiring that the measurements be taken in a specific order The procedure is in the table on the next page it begins by assuming the Impulse is powered off You will notice by the way that an option is often presented in the procedure surrounded by a nimbus like this That simply indicates that on the screen the option will be flashing on and off A flashing indicator shows you the measure ment you need to take next the indicator for the number being displayed also shows on the screen but does not blink Page 29 TAKING HEIGHT MEASUREMENT Button Action Result example Press Fire to turn on the instrument Press Back to reach the Height indicator Press Fire to advance into the height subprocedure Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 RIGHT HT RIGHT HT Sight the target through the Scope Press Fire to take the horizontal distance measurement expressed in yards or meters Aim to the base of the object even if you can t sight it and press Fire to take the base inclination reading
14. Impulse XL User s Manual 2 Edition December 1997 Page 36 TAKING A MULTIPLE MEASUREMENT If you are satisfied with the measurement and wish to add it to your total press Forward The instrument adds the current measurement to the total and displays the new total 7 When the total is showing you have another two options To simply take the next measurement without downloading return to step 5 To download the current total press Forward The arrows begin flashing again and you may then return to step 5 for the next measurement In most cumulative distance measurement exercises you will want to take a series of measurements and download only once when series of related measurements are complete Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Additional Notes The cumulative measurement total is saved in memory even if the instrument is powered off If you turn the instrument on and scroll back to the MULTI CUM option you can resume the procedure with step 7 To clear out the current total and begin another series of measurements long press the Back button while the cumulative distance total is showing In the 200XL the instrument keeps the total in both SD and HD and you can switch between the two at any time If you are viewing a single distance measurement on the display press Back once and repeat step 4 to toggle between SD and HD If you are viewing a cumulative to
15. accurate indicator of where the laser beam is hitting A bicycle reflector at least three inches in diameter is recommended The target should be positioned at least 90 meters 100 yards from the instrument and isolated from other targets Ideally the target when viewed from the instrument s position should be silhouetted against the Sky with no other targets in the immediate vicinity That s so you can be certain of the general area the laser is hitting Finally make certain you know the scope s definition of which way is up before making large adjustments Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Action Notes Explanation Position the target Position the instrument Aim at the center of the Slowly pan the Impulse horizontally and vertically When the tone drops from high to low note the position of the target relative to the aiming dot You need an isolated reflecting target at least 90 meters away It should be visible but should present as small a target area as possible Use a stable tripod that allows easy movement of the instrument in two planes Go to SYS BORE tt is displayed The instrument emits a tone The frequency varies as you move the instrument If the frequency drops off at equal distances from the center of the aiming dot the instrument needs no adjustment Otherwise continue with the next step Unscrew and remove the turr
16. is expressed This pattern repeats as often as needed to DOWNLOADING DATA value units F feet M meters D degrees G gradients 200 XL only specify the downloaded values except that the final units designator is not followed by a comma csum consists of an asterisk followed by a two digit hexadecimal checksum The checksum is calculated by XORing the eight binary data bits of each character between the dollar sign and the asterisk lt CR gt lt LF gt is a carriage return line feed The maximum value for any measure ment is 999999 the minimum is 99999 Since the instrument cannot measure more than a few thousand meters or yards the maximum possible values can only be obtained through cumulative distance measurements or by using a large offset An invalid query will not be responded to by the Each unit designator is a one character instrument indicator Legal values are Note Historically the HV data line has been the most commonly used of all Criterion 400 data line types and hence is the only data line type supplied in the Impulse Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 56 DOWNLOADING DATA The examples in the table use these values and Specific Message Formats The table on the following page shows example message formats for each data type in CR400 200 and IP100 formats Again remember that during downloading measurements taken in ya
17. must press Fire again to measure the target To set the point manually invoke the Impulse edit mode See The Edit Mode for more information Note An edited set point cannot exceed 99999 meters or yards and a set point measured by the laser can extend to the full range of the instrument Press Forward The numeric display area shows dashes and the arrows turn off Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 34 TAKING A MULTIPLE MEASUREMENT 6 Aim to a target and press Fire Again if the aiming dot is off on the red dot scope the first press turns it on and you must press A cumulative measurement lets you move from Fire again to fire the laser one target point to another stopping at each one to measure the distance to the next target point The instrument accumulates the measured distances in SD in the 100XL and both SD and HD in the 200XL to give you a running total Cumulative Measurements 7 The numeric display area shows the distance difference between the set point and the target you just measured To download the value press Forward 8 Repeat step 6 for as many targets as you Here s how you take a CUM measurement have When you are finished press Back 1 Press Forward Back until the MULTI twice to back out to the main display indicator shows in the upper right quadrant Exiting the difference measurement option will a Sorgen clear the difference measurement in m
18. of targets and a single set point You can use slope distance measurements or horizontal distance measurements 200XL only Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Here s how you take difference measurements 1 Press Forward Back until the MULTI indicator shows in the upper right quadrant of the display screen Press Fire to enter the MULTI subprocedure The DIFF indicator displays Press Fire to enter the DIFF subprocedure Impulse 100XL The next display is a series of dashes with two arrows flashing in the right corner The instrument is now ready to accept the set point Impulse 200XL SEL shows in the numeric display area and HD flashes just to the left of MULTI Page 33 TAKING A MULTIPLE MEASUREMENT At this point you must select whether to take all of the measurements as horizontal distances or slope distances Horizontal distance is already selected as shown by the flashing HD indicator To use HD measurements then simply press Forward to move to the next display To select SD measurements press Fire to start SD flashing Then press Forward to move to the next display The next display is a series of dashes with two arrows flashing in the right corner The instrument is now ready to accept the set point 4 To set the point by laser aim to a suitable target and press Fire If the aiming dot is off on the red dot scope the first press turns it on and you
19. or further away depending upon your circumstances For these instances the Impulse provides the OFFSET option which adds or subtracts a distance to the slope distance measure ment Since slope distance is used to calculate HD and VD in a 200XL the range offset will also affect these options Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 For example if the point you want to take a measurement from is inconvenient to occupy you could shoot the distance to that point then enter it as an offset that will be figured into all subsequent measurements Range offsets up to 3000 meters may be entered A positive offset will lengthen your measurements or essentially move back your measurement point and a negative offset will shorten the measurement by moving the measurement point closer to the target Here s how to specify a range offset 1 Use Forward Back as necessary to show the SYS option indicator 2 Press Fire to select the SYS option Page 40 TARGETING 3 Press Forward repeatedly until the OFFSET indicator in the lower left portion of the display begins blinking At that point the numeric display shows the current range offset value with the first digit blinking 4 Editin the range offset value in whole feet or meters Refer to The Edit Mode chapter for more information You will know that a range offset is when you see the OFFSET indicator in the lower left porti
20. taken by displayed in yards you will know it s yards placing a reflector if possible directly next to the because there will be no units indicator target at the center of its girth This insures the displayed and the final height value will be most accurate horizontal distance reading thus shown in feet leading to the most accurate height calculation Height Resolution Also note that a programmed range offset will not affect your height calculation Height values are given in whole feet or tenths of meters Additional Notes The Impulse uses an HD and the two successive INC readings to calculate a height Therefore when taking a base or top angle reading you don t need an actual target to shoot to since only the tilt sensor is activated You should aim to where you think the top of the target actually is not just the highest point you can see Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 32 TAKING A MULTIPLE MEASUREMENT The multiple measurement option MULTI allows the Impulse to take measurements to a succession of targets What it does with those measurements depends upon the MULTI suboption you are in at the time e DIFF Difference compares each measurement to one set point and reports the difference e CUM Cumulative accumulates the measurements and maintains a running total Difference Measurements Difference measurements calculate the differences between a succession
21. Copy LTI s Impulse XL User s Manual 27 Edition December 1997 GETTING STARTED QUICKLY When you receive your Impulse XL laser Accessries instrument check to see that you have received everything you ordered and that it all arrived In addition you may have ordered one or more undamaged of these optional accessories e Tripod yoke and mount e Compass and mount e Impulse laser instrument e Monopod e Belt clip e Two Impulse download cables e Hand strap Turck 4 pin to DB 9 pin cable e Two AA batteries Turck 4 pin to HP 200 48 10 pin cable Users manual e Data collector and software e Padded carrying case Electronic Copy LTI s Impulse XL User s Manual 27 Edition December 1997 Page 1 GETTING STARTED QUICKLY Inseting the Bdteries Load the batteries by inserting them positive end first into the battery compartment on the Impulse s back panel Pi gt Twist the battery compartment cap clockwise finger tight to secure it Warning Do not use the new style of AA batteries with the voltage check feature built into the cell The voltage check cells are slightly larger in diameter and will cause problems when inserting into and extracting from the battery compartment The diameter of the battery tube on your Impulse was chosen carefully to allow easy in out of normal AA batteries with no excess room for cell shifting and possible loss
22. D EE IMPULSE L Electronic Copy Impulse XL amp User s Manual Second Edition December 1997 Information in this document is subject to change without notice and does not represent a commitment on the part of Laser Technology Inc No part of this manual may be reproduced in any form or by any means electronic or mechanical including photocopying recording or information storage and retrieval systems for any purpose other than the purchaser s personal use without the express written consent of Laser Technology Inc Copyright O Laser Technology Inc 1997 All rights reserved Printed in the United States of America Impulse and Criterion are registered trademarks of Laser Technology Inc HP is a registered trademark of Hewlett Packard Company Written and illustrated by James Adams and Lolita Mannik Electronic Copy LTI s Impulse XL User s Manual 27 Edition December 1997 LIMITED WARRANTY Laser Technology Inc LTI warrants the Impulse to be in good working order for a period of one year from the date of purchase from LTI or an authorized LTI product dealer Should the product fail to be in good working order at any time during the warranty period LTI will at its option repair or replace the product at no additional charge except as set forth below Repair parts and replacement parts and products become the property of LTI This limited warranty does not include service or repair of damage to the product resul
23. In edit mode accepts a manually entered value No function in measurement operations In system setup functions invokes optional edit mode so a value can be entered or altered Once in edit mode advances to the next digit Moves forward in the options in a menu When DNLD is showing sends a download message out the serial port In edit mode first press restores the edit value second press abandons the edit Long press sends a download message out the serial port With a red dot sighting scope varies the intensity of the scope dot When pressed simultaneously with Back2 turns off the power In edit mode increments the digit value Moves backward in the menu selects the previous option or backs out of a submenu Clears DNLD indicator In edit mode first press restores the edit value second press abandons the edit Long press clears out the current measurement value Turns the screen backlight on off In edit mode decrements the digit value When pressed simultaneously with Forward2 turns off the power Electronic LTI s Impulse XL User s Manual 27 Edition December 1997 Page 18 SETTING UP FOR LEFT HANDED OPERATION The Impulse can be operated with equal ease by both right handed and left handed operators The instrument comes configured for right hand users but can be easily reconfigured by doing two things Switching the hand strap to the left side of the instrument e Recon
24. Mount The compass mount attaches to the yoke and extends over the top of the mounted instrument On top of the mount is a housing that fits over the compass and holds it in place Compass housing Compass mount Compass The compass features two hairlines one of which is movable The fixed hairline is for reading the magnetic bearing the movable hairline is for reading a bearing corrected for declination Fixed hairline Movable Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 67 USING A TRIPOD MONOPOD You must set the movable hairline to account for the declination in your area If you are using a Suunto KB 14D compass set the declination crosshair by moving it east or west of the magnetic crosshair by half the number of degrees of the declination value For example if the declination in your area is 10 E set the movable hairline so it is 5 degrees to the left of the fixed hairline If the declination is 10 W set the movable hairline 5 degrees to the right of the fixed hairline Test this on a target and take readings with each line to ensure that you get the full value between the two azimuths If you are using a different compass please refer to the manufacturer s instructions for setting declination Note for Criterion Users If you are using a Criterion staff subtract 5 inches 0 42 feet from the number silk scr at the bottom of the staff Electronic
25. Press Fire to toggle the primary panel between RIGHT and LEFT With the desired panel indicator showing press Forward to accept the change At this point the button panels have been switched and you will need to press Back on the new same side as the hand strap primary panel to back out to the main menu Follow this procedure to switch the primary panel 1 Press the Fire button to power on the instrument 2 Repeatedly press Forward or Back until the indicator SYS shows in the upper right quadrant of the back panel display screen Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 20 TAKING A BASIC MEASUREMENT The Impulse 200XL takes five basic measurements Two slope distance and inclination are measured directly The remaining three horizontal distance vertical distance and percent slope are calculated The Impulse 100XL has no way to measure angles and takes only slope distance measurements The five measurements are related the relationships among them are illustrated here NT 1 vertical distance slope Measured lt inclination y Calculated horizontal distance Percent slope is 100 tan inclination To get a feel for how the Impulse operates choose a target near you For the purposes of this exercise the target can be as prosaic as say a wall at the end of the corridor outside your office or the building across the street Then make the button
26. age format setting CR400 or IP200 or IP100 6 Press Fire to toggle between CR400 and IP200 IP100 Impulse 200XL While CR400 is showing you have the option of pressing Fire2 to toggle the D or G indicator on and off Either D or G will be displayed depending upon which units of angular measurement you have selected With D or G on the azimuth field in the Criterion horizontal vector message will download as 0 00 with D or G off it downloads as null This is to accommodate download software that does not accept null values for azimuth Impulse 100XL While CR400 is showing you have the option of pressing Fire2 to toggle the range units F or M and angle indicator D on and off Either F or M will be displayed depending upon which range units you have selected With F M and D both off all fields download as null except for SD Turning F M on downloads an SD value in the horizontal distance field and 0 00 in the inclination field with a valid measurement Turning both F M and D on will download an SD value in the horizontal distance field and will download 0 00 in both the inclination and azimuth fields This is to accommodate download software that does not accept null values Press Back twice to back out to the main display and save the DNLD settings The DNLD options are set and will come up the next time you power on the instrument Electronic Copy LTI s Impulse XL User s Manual 27 Edition Decembe
27. always input manually and entering these submenus automatically invokes the editor When it is more desirable to manually input gate distances and the set point of difference distance measurements rather than shooting them in with the laser an optional editor is available by pressing Fire2 when a distance measurement is requested by the Impulse Once in the editor follow this method e The left most digit will be flashing Press Forward2 or Back to toggle the first digit between zero which represents a positive value and the minus sign e Fire2 advances the edit to the next digit to the right Use Forward2 and Back to increment or decrement the value of the digit Repeat this step as necessary to advance through each digit in the entire distance value and edit each digit individually The distance value can be cleared to zero at any time by long pressing the Back key Once altered or cleared the original distance value can be restored by pressing either Forward or Back Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 46 When your edited value is correct press Fire beep will sound and the value will be accepted in memory and at this point can no longer be restored by pressing Forward or Back To exit the editor and return to your submenu press Forward or Back Note If you exit out of the editor without pressing Fire your edit will not be saved Electronic Copy LTI s Impu
28. cond press will take the measurement You may have a fixed crosshair scope on your Impulse XL in which case two button presses are not needed to take a measurement After a brief delay the instrument emits a high pitched beep and displays something like this RIGHT HD M j DNLD The large number in the center of the display is the distance to the target in the lower right quadrant means the number is available at the serial port If you have a connection to a data logger or notebook computer you could download the number to be stored and saved If you like feel free to try some more button presses and take more measurements The important thing for the moment is that you have experienced the Impulse s basic point and shoot operation and you have a feel for how the instrument uses indicators on the screen to let you know what operations are available to you at any given time Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 5 THE ANATOMY OF THE IMPULSE Sighting scope Receive lens E Front View Transmit lens Speaker 7 Button panel LCD screen Button panel EN Battery compartment Serial port connector Rear View The Impulse XL consists of a laser range sensor a fluid tilt sensor 200XL model only a sighting scope and a data output port The sensors are integrated with software controls and accessed through the two 3 but
29. d by pressing Fire RIGHT HD RIGHT HD has no subfunctions The dashes show The SYS option has subfunctions use the where the measurement will display Fire button to enter the subprocedure Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 14 INSTRUMENT OPTIONS AND INDICATORS Error Conditions The middle area of the screen is also where error codes are displayed Impulse error codes are in the form Exx where xx is an error number The possible error indicators are listed and explained in the table at the right If the Impulse detects an error in a measurement or download attempt a low pitched tone issues from the speaker and an error code displays The most common error is that the Impulse simply cannot find the target Most other errors are similarly trivial correcting them requires only that you reshoot the measurement you were trying to take or try the download again Explanation Display overflow The measurement exceeds the display capacity or measurement 90 degrees Editor overflow overflow Failure to lock on target Reposition instrument and retake measurement Target lost during measurement Reposition and retake measurement E03 Unstable aim Steady the instrument and retake the measurement E04 E52 E60 E61 E62 200XL only Invalid tilt sensor reading Contact Laser Technology if error persists
30. d press Fire To set the gate manually use the editing function See The Edit Mode chapter later in this manual for more information 8 Press Back to back out to the main display The long gate is now set and the L indicator is displayed in distance measurement modes Clearing Gate Values If you want to clear out a gate value instead of setting it access the value as described above and long press Back or edit in zero Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 43 TARGETING Keep these facts in mind when using gates Due to hardware constraints gates work best when the short gate value is 5 to 6 meters yards beyond the targets you wish to reject Gates are applied to SD measurements only and may not be exactly where expected in HD or VD See the diagram in the beginning of Taking a Basic Measurement to clarify the relationship between these measurements The gate window is restricted to a width of 2 meters yards If you set the gate window too narrow the instrument automatically adjusts it by resetting either the short or long gate taking the most recent value entered as the standard to recalculate the other by So if the short gate is already set at 10 yards for example and then you set the long gate to 11 yards the instrument resets the short gate to 9 yards Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 A maximum value of 3000 meters yard
31. depending on what the instrument is doing and you can tell what is happening during a measurement simply by listening The table below explains the various sounds Growl The instrument is trying to lock onto a target for a range measurement Nearly extremely fast ticking imperceptible when the instrument acquires the target immediately When the growling quits the target is acquired and range readings are being taken readings The instrument has completed the measurement but one or more of the sensors failed to get a reading The error message is indicated on the display screen If you re having trouble finding a target you will know this by the growl you hear you can hold the Fire button down and pan the instrument around until it locates a target The laser will try to acquire a target for up to 15 seconds and if it is unsuccessful it will time out and another trigger press will be needed to initiate a new measurement Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 39 TARGETING When taking a measurement be sure to keep the trigger pressed down and hold the instrument steady until you hear the double beep Moving the instrument may cause inaccurate readings if the laser is shifted from one target to another during a measurement Setting the Range Offset The Impulse has a feature that allows you to alter the measuring point of the instrument You may want to move it closer to your target
32. easurement is displayed that measurement is a percent slope not an inclination angle The 96 indicator shows to remind you Note however that you can get percent slopes only in the basic measurement displays never in the Height measurement displays Note also that the instrument never downloads a percent slope It always downloads the inclination angle The D G indicator indicates the units to be used in the download message Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Measurement Resolution Horizontal distances and slope distances are displayed in whole yards or meters Vertical distances and heights are displayed in whole feet or tenths of meters Power Conservation Intervals To help conserve its batteries the Impulse incorporates two timed power off intervals one for the red dot sighting scope and one for the instrument as a whole The red dot interval does not affect power conservation in a fixed crosshair scope By default if there is no instrument activity for 15 seconds the red dot turns off If there is no activity for two minutes the instrument shuts down completely Page 26 TAKING A BASIC MEASUREMENT If those intervals are inconvenient for the measurement conditions you find yourself in you can change the intervals through the SYS option Here is the procedure 1 Press Forward Back as necessary to show the SYS option Press Fire to select the SYS option Press Fo
33. emory 2 Press Fire to enter the MULTI subprocedure The DIFF indicator displays 3 Press Forward to toggle to the CUM indicator Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 35 TAKING A MULTIPLE MEASUREMENT 4 Press Fire to enter the CUM subprocedure Impulse 100XL The next display is a series of dashes with two arrows flashing in the right corner The instrument is now ready to take the first measurement Impulse 200XL SEL shows in the numeric display area and HD flashes just to the left of MULTI At this point you can select whether to take all of the measurements as horizontal distances or slope distances You can toggle between the two at any time Horizontal distance is already selected as shown by the flashing HD indicator To use HD measurements then simply press Forward to move to the next display To select SD measurements press Fire to start SD flashing Then press Forward to move to the next display The next display is a series of dashes with two arrows flashing in the right corner The instrument is now ready to take the first measurement Aim to a target and press Fire If the aiming dot is off on the red dot scope the first press turns it on and you must press Fire again to fire the laser At this point you have two options If you are dissatisfied with the measurement for some reason repeat step 5 to retake the measurement Electronic Copy LTI s
34. et caps Page 72 Each tick mark adjustment screw equals one minute of angle MOA Adjust carefully Make sure you re moving the dot or Adjust elevation and windage until the frequency drops off when the target is at equal distances from the center of the aiming crosshair in the right direction dot before you try adjusting in large increments Check the alignment one last time Then replace the turret caps and power down the instrument Aligning the Tilt Sensor on the 200XL Periodically check and realign if necessary the instrument s tilt sensor using the CAL suboption in the SYS menu The process of aligning the sensor involves finding out how far off it is and recording an offset value that accounts for the discrepancy The basic idea behind the procedure is simple you are aligning a target level with the scope and forcing the instrument to measure an inclination angle of zero Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Different methods of tilt calibration offer varying degrees of precision and you can determine which to use based on the level of accuracy required for your measurements The first method the subtractive offset requires a precision surveying level that helps you position a target precisely level with the Impulse scope If you do not have such an instrument use one of the additive offset methods such as the
35. face uses RS 232 12V signal levels and data format The format parameters are set to 4800 bps CR400 format 9600 bps IP200 and IP100 format 1 start bit 8 data bits 1 stop bit no parity Pin out assignments for the serial port are Serial Out Tx Serial In Rx Trigger Ground Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Impulse IP200 or IP100 Format Queries The data you wish to download must appear in the display window If it does not scroll to the appropriate option An Impulse format query message from the download device to the Impulse is in this general format datatype CR where datatype identifies the type of data you are requesting Legal values ID Instrument version number BM Basic measurements HT Height data 200XL only RD Range difference RC Range cumulative lt CR gt is a carriage return character An invalid query will return error message ERR Page 52 DOWNLOADING DATA Download Messages Data messages downloaded in IP200 IP 100 format are in this general form datatype value dunits aunits lt CR gt where datatype identifies the data type Legal values ID Instrument version number BM Basic measurements HT Height data 200XL only RD Range difference RC Range cumulative value are the values associated with the data type separated by commas The last value in the
36. figuring the button panels Switching the Hand Strap To switch the hand strap remove the screws that attach the strap to the mounting plates Use the left thumb block and position the strap on the left side of the instrument so the free end of the adjusting strap is facing the rear of the instrument and the holes in the strap base align with the holes in the mounting plates Then simply reattach the screws PART NAME QUANTITY y OAU A U N Screw M4x8 Thumb Block Left Hand Strap Screw M3x10 Flat Washer Tri Ring Shoulder Washer 1 e e ppp Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 19 SETTING UP FOR LEFT HANDED OPERATION Reconfiguring the Button Panels The Impulse has a three button control panel on each side of the instrument One of those panels is designated the primary panel the other the secondary panel The primary panel denoted by RIGHT or LEFT in the upper left corner of the display controls the primary functions of the instrument The secondary panel controls ancillary functions and generally gets much less use For easy handling you will usually want the primary panel to be the one on the 3 Press Fire to enter the SYS submenu Repeatedly press Forward until SEL shows in the middle of the display screen and the panel indicator begins flashing in the upper left quadrant This is the last item in the SYS submenu
37. g conditions See Setting the Scope Dot Intensity under Taking a Basic Measurement The variable power sighting scope features an in scope crosshair and allows you to adjust the magnification of the scope Page 7 THE ANATOMY OF THE IMPULSE Frort and Back Panels The Impulse has two lenses on the front panel The top lens transmits infrared laser signals The bottom lens receives signals back from the target and feeds signal information to the instrument s internal circuitry The back panel contains an LCD display screen battery compartment access and a serial port connector that allows you to connect the instrument to a data collector or notebook computer Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 8 INSTRUMENT OPTIONS AND INDICATORS The internal software of the Impulse is organized into options Each option represents a specific Impulse measurement or setup function and has a corresponding indicator on the LCD screen To view all of the possible Impulse indicators at once power up the instrument by pressing the Fire or Fire2 button and keep the button pressed down This is also a good way for you to check if all the components on your display are working properly The display will look like this RIGHT HT GATE HD MULTI SYS INC LEFT SD GSL DIFF 5588B8 gt LASER OFFSET BORE FILTER CAL DNLD BATT PIVOT UNITS UPDATE MEM AUTO The display indicators are grouped by f
38. he building Objects such as brush weather effects or a window you may be shooting through can all serve as unintended targets You can set a gate by shooting to a target or by editing in a value The procedure Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Turning On the Gates 1 Use Forward Back as necessary to show the GATE indicator Press Fire to select the GATE option The numeric display area shows the current state of the GATE option Press Fire to toggle GATE between On and OFF If the gates already have values assigned the S and L indicators will display in addition to the G indicator To set gate values press Forward The S indicator flashes and the short gate value displays Continue to the next step To back out to the main display press Back No gate values have been set Page 42 TARGETING Setting a Short Gate Value 5 To set the gate by laser aim to an appropriate target and press Fire To set the gate manually use the editing function See The Edit Mode chapter later in this manual for more information To set a long gate value press Forward The L indicator flashes and the long gate value displays Continue to the next step To back out to the main display press Back The short gate is now set and the S indicator is displayed in distance measurement modes Setting a Long Gate Value 7 Tosetthe gate by laser aim to an appropriate target an
39. hows in the numeric display area Page 24 TAKING A BASIC MEASUREMENT 4 Press Fire to toggle between the F feet yards and M meters indicators Press Forward to select the F or M The D degrees or G gradient indicator begins flashing Next press Fire to toggle between D and G Press Forward to select D or G The 96 indicator flashes and OFF shows in the numeric display If you wish to turn on Percent Slope press Fire Press Back twice to accept the new settings and back out to the main display Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Note Changing your range measurement units will affect several values you may have stored in memory The range offset and gate values will be reset to zero Basic and height measurements are cleared and only a cumulative distance total will be converted from the current measurement units to the newly selected units Percent Slope Percent slope indicated by is a calculation equal to 100 times the tangent of the inclination angle It is a variant way of expressing the inclination Page 25 TAKING A BASIC MEASUREMENT An inclination angle of 5 degrees for example is equal to a slope of about 8 75 percent An inclination of 90 degrees will generate the display overflow error doF and inclinations that exceed 90 degrees will generate error E05 If you have turned on in the SYS UNITS option and an inclination m
40. lse XL User s Manual 2 Edition December 1997 Page 47 DOWNLOADING DATA The Impulse back panel contains a 4 pin serial connector that allows you to download data to a data collector or notebook computer The accessories needed for remote operations cables and a data collector are available from LTI Current data collection software packages for the laser include LTI Map LTI Face Profiler and Traverse PC Handheld Available interfaces for GPS mapping systems include Ashtech Reliance Trimble Pathfinder and CMT MC GPS Please call us for more information on application software Downloading Measurement data can be downloaded using one of three methods manual download automatic download or query The data you wish to download must appear in the display window for either instrument invoked or requested data to be valid If there are no measurements available to download the instrument downloads null or zero values When a measurement is available the DNLD indicator displays In that case you can download by query or manually by short pressing Forward A successful download will be noted by a flashing DNLD indicator then it will disappear Even if the DNLD indicator is not showing downloading is always available by long pressing the Forward button The automatic download mode when activated downloads values automatically every time the instrument takes a measurement Electronic LTI s Impulse XL U
41. mpleted and activated in order to benefit from this warranty No exceptions In the unlikely event that your new LTI laser should require warranty or repair service call us to receive a Return Merchandise Authorization RMA number before returning your product Contact us at Laser Technology Phone 303 649 1000 7070 South Tucson Way Fax 303 649 97100 Englewood CO 80112 USA Web Site www lasertech com Electronic Copy LTI s Impulse XL User s Manual 27 Edition December 1997 PRECAUTIONS Never view the laser transmitter with binoculars or magnifying optics Although the Impulse XL is an eye safe Class laser device reasonable precautions should be taken in its operation The use of optical instruments with this product can increase eye hazard Never attempt to view the sun through the scope Looking at sun through the scope may permanently damage your eyes Never point the instrument directly at the sun Exposing the lens system to direct sunlight even for a brief period may permanently damage the laser transmitter Do not expose the instrument to extreme temperatures Impulse components are rated for a temperature range of 30 C 22 F to 60 C 4140 F Do not expose the instrument to temperatures outside of that range Electronic Copy LTI s Impulse XL User s Manual 27 Edition December 1997 FOREWORD The Laser Technology Inc Impulse XL is a light weight hand held laser ranging instrument that allow
42. of contact Note that voltage check batteries will cause similar problems with most standard metal tube AA flashlights Laser Technology will not be responsible for damage to the unit as a result of trying to force these new style cells in or out of the battery tube Do not peel off the voltage check wrapper this can cause an instrument short circuit In addition the instrument has its own battery voltage monitor thus eliminating the need for voltage check cells Electronic Copy LTI s Impulse XL User s Manual 27 Edition December 1997 Page 2 GETTING STARTED QUICKLY Powering On and Off The Impulse has a row of three buttons on either side of the instrument Later you will learn the full use of the button panels including setting them up for left handed use For a quick start at the instrument however power on and off by using the buttons depicted in the illustrations at the right Power on by pressing the rear most button the button closest to you on either button panel Power off by simultaneously pressing the two forward most buttons on the left panel The instrument may also power itself off after a period of inactivity Press this button to power on Rear of instrument A 1 Press these two buttons simultaneously to power off Press this button to power on
43. ollow the same procedure but instead of placing the instrument on a desk or table place the instrument on a stable platform at one end of the alignment area and shoot to the opposite target These two readings should also be within 0 05 degrees of one another Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 76 SPECIFICATIONS Note these specifications are subject to change Weight Size Max Range Range Resolution Height Resolution Inclination Limits Inclination Accuracy Power Supply 1 kg 2 2 Ib 15 2 x 6 4 x 12 7 cm 6 x 2 5 x 5 in 2200 meters 2400 yards 1 meter yard 0 1 meter 1 foot 180 degrees 0 1 degree typical Two AA batteries providing up to 20 hours of use Do not use voltage check cells Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 77
44. on of the display on SD HD and VD measurements Remember the range offset is added onto the SD measurement which is used to calculate HD and VD However it does not affect height measurements Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Setting a Gate Window Using the Gate option it is possible to restrict the Impulse to targeting objects within specified ranges The ranges specified which are always slope distance values form the gate window The range minimum is called the short gate the range maximum the long gate Short gate Long gate The Impulse will detect 4 those targets inside this gate window M i dm J d In essence the gate window artificially extends the instrument s minimum range and restricts its maximum range One of the uses of the gate window is to help you make certain you are getting the right target when objects near you or just beyond your intended target present a danger of giving you false readings Page 41 TARGETING You needn t set both gates If you set only the short gate for example the gate window extends from the short gate value to the maximum range of the instrument Potential targets between you and the length of the short gate will be rejected For example if you are trying to acquire a building as a target it is helpful to set the short gate to a value that is slightly shorter than the distance to t
45. presses indicated in the table The procedure assumes that you are starting from scratch with the Impulse powered off Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 21 TAKING A BASIC MEASUREMENT Dothis get this result Press Fire With a 200XL you get an HD indicator with a 100XL you get an SD indicator Sight the target through the Scope Press Fire and hold the Fire button down until the instrument locks on a target then release You have just taken an HD horizontal distance measurement to a building or whatever target you chose Each of the basic measurements operates in essentially the same simple way power on aim and fire except that you sometimes have a couple of other considerations First the screen must be displaying the indicator for the measurement you want to take HD for horizontal distance SD for slope distance VD for vertical distance INC for inclination etc If the correct indicator isn t showing press Forward until it is Second if you are using a red dot sighting scope the scope aiming dot may turn itself off after about 15 seconds of inactivity as a power conservation strategy If the red dot isn t showing press Fire to turn it back on See Power Conservation Intervals later in this section If after pressing Fire the red dot still i
46. r 1997 Page 50 DOWNLOADING DATA Optional Remote Trigger It is possible to remotely trigger the Impulse and take a measurement by using an external computer data collector or switch closure Remote triggering is accomplished by providing an open collector closure to ground or an active low TTL or RS232 level signal to the trigger pin on the serial connector This option requires a special order download cable that connects the remote trigger signal from the Impulse to the RTS output signal of a computer s serial port Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 When using a serial cable with a remote trigger connection care must be taken in controlling the state of the RTS signal from the host computer Often times the default state of the RTS signal will be low causing an inadvertent trigger of the Impulse Since the remote trigger signal is treated the same as a keypress on the Impulse keypad holding the signal low is identical to holding down a function key which prevents a response to any additional keys that are pressed With the red dot sighting scope if the red dot is off when the remote trigger is activated it is not necessary to trigger twice to first turn on the dot and then take a measurement The remote trigger will turn on the scope aiming dot and take a measurement all at once Page 51 DOWNLOADING DATA Serial Interface Specifications The Impulse serial inter
47. rds will be converted to feet for software compatibility purposes making F the range units designator in the data line units 23 meters 200XL only 28 meters 15 9 meters 200XL only 34 8 degrees 200XL only 37 2 meters 200XL only 41 meters set point 2 meters difference 208 meters HD total 200XL only 244 meters SD total Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 57 DOWNLOADING DATA Version ID Impulse Model IP200 format Message CR400 format Message 200XL Query Query ID PLTIT RQ ID Response download Response download 1D IP200 2 50 2A PLTIT ID IP200 2 50 46 Impulse Model IP100 format Message CR400 format Message 100XL Query Query ID PLTIT RQ ID Response download Response download 10 1 100 2 50 2 PLTIT ID IP100 2 50 45 Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 58 DOWNLOADING DATA Basic Measurements and Horizontal Vector Impulse Model IP200 format Message CR400 format Message 200XL Query Query BM PLTIT RQ HV Response download Response download BM 28 34 8 23 15 9 M D 42 PLTIT HV 23 M 34 8 D 28 M 39 Note empty field is azimuth value Note empty field is azimuth value Bad reading or null data Response download with dummy azimuth field BM 34 8 M D DE PLTIT HV 23 M 0 00 D 34 8 D 28 M 63 BM Bad reading or null data PLTIT HV 34 8
48. rward repeatedly until the M and V indicators begin flashing at the right center of the screen The numeric display area will be showing the current interval settings like this Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 The P notation indicates the power off interval in minutes the d shows the scope dot interval in seconds Press Fire repeatedly until the numeric display shows the intervals you want Your choices are these 2 415 power off interval 2 minutes scope dot interval 15 seconds 5 415 power off interval 5 minutes scope dot interval 15 seconds P5d60 power off interval 5 minutes scope dot interval 60 seconds ALL On intervals full on the instrument will not power down and the scope dot will never turn off Care should be taken in this mode as it is highly power consumptive Page 27 TAKING A BASIC MEASUREMENT 5 Press Back twice to accept the new settings and back out to the main display If the instrument powers down while you are using it all measurements will be lost except for cumulative distance Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 28 TAKING A HEIGHT MEASUREMENT Measuring a height presents a simple geometric problem easily within the capabilities of the Impulse 200XL solve the triangle formed by the object the ground and the instrument B
49. s for the short gate and 3002 meters yards for the long gate may be entered Notes on Measurement Modifiers When the instrument is powered off or turns itself off the gate option is reset to OFF but gate values are retained in memory However the range offset setting is saved upon powering down When using gates and offsets together keep the following in mind Gates and offsets are additive a gate will reflect the same offset that is applied to the target Say for example that you set the range offset to 15 meters and the short gate to 30 meters If you scroll back to view the short gate value it will then read 45 meters But remember the 45 meters is from the virtual measuring point 15 meters behind you The gate is still 30 meters in front of you Page 44 TARGETING e The range offset has the same additive effect on the long gate setting e Arange offset does not affect ranges in HT mode And although the range offset will not alter the physical location of your gates it will alter the gate values seen on the display so you may want to clear the range offset to avoid confusion Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 45 The Impulse has an editor which can used to manually enter numeric values for the range offset tilt calibration offset 200XL only gate distances and the set point of difference distance measurements The range offset and tilt offset are
50. s you to quickly and conveniently measure distances heights and vertical angles The Impulse XL uses sensors to measure distances and vertical angles and menu driven software to convert sensor readings to meaningful measurements The Impulse XL can be held easily in one hand and features simple three finger operation you execute most primary operations simply by sighting your target through the scope and briefly pressing one of three buttons conveniently located at your fingertips This manual describes the options characteristics and operation of the Laser Technology Inc Impulse XL laser ranging instrument Your particular Impulse XL may not have all the options described The Impulse 100XL takes The Impulse 200XL takes these measurements these measurements Slope Distance Slope Distance Cumulative and Difference Distance Horizontal Distance Vertical Distance Height Inclination Cumulative and Difference Distance Electronic Copy LTI s Impulse XL User s Manual 27 Edition December 1997 TABLE OF CONTENTS STARTED QUICKLY eee eene eee ene 1 TAKING A BASIC MEASUREMENT 21 Acie Ras 1 UNGROUPING SENSORS ON THE 200XL 23 e ea 1 SETTING THE SCOPE DOT INTENSITY 23 rS INSERTING THE BATTERIES 22 2 POWERING ON AND OFF 3 PERCENT SLOPE 25 TAKING A MEASUREMENT EM UM 3 MEASUREMENT RESOLUTION
51. se XL User s Manual 2 Edition December 1997 Page 23 TAKING A BASIC MEASUREMENT Setting the Scope Dot Intensity The optional red dot sighting scope has six intensity settings which vary from bright to off Adjust the red dot brightness by pressing the Forward2 button repeatedly until the desired intensity is achieved Setting the Measurement Units The Impulse will express measurements either in English units or in metric units If you select English units heights and vertical distances will be displayed in feet but horizontal distances slope distances and multiple measurements will be displayed in yards Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Selecting metric units means all measurements are given in meters with heights and vertical distances being resolved to tenths of meters and horizontal distances slope distances and multiple measurements expressed in whole meters If you re taking a measurement and are not sure which units will be displayed just remember that if no units indicator is displayed next to the number the measurement is in yards M denotes meters F denotes feet You select the units by accessing the SYS option Here is the procedure 1 Use Forward and Back as needed to display the SYS indicator Press Fire to select the SYS option Press Forward repeatedly until the UNITS indicator at the bottom center of the display screen begins flashing and SEL s
52. ser s Manual 27 Edition December 1997 Page 48 DOWNLOADING DATA The download messages can take one of two formats the Impulse native format or for those who already have download software designed for the Criterion family of instruments the Criterion 400 format The Impulse native format comes from LTI s Impulse series of instruments and is denoted by IP200 in the Impulse 200XL and IP100 in the Impulse 100XL Distance measurements will be downloaded either in feet or meters If you have selected yards for your distance units they will be converted to feet for download purposes since most software isn t compatible with yards as a measurement unit The DNLD Option You set the automatic download mode and change the download format with the SYS DNLD option Here is the procedure 1 Use Forward and Back as needed to display the SYS indicator 2 Press Fire to select the SYS option 3 Press Forward repeatedly until the DNLD indicator appears in the lower right corner of the display window and On or OFF shows in the numeric display area The AUTO indicator will also show but will be blinking 4 Pressing Fire toggles between turning the auto download feature On and OFF Electronic LTI s Impulse XL User s Manual 27 Edition December 1997 Page 49 DOWNLOADING DATA 5 Press Forward to select On or OFF The AUTO indicator disappears and the numeric display area shows the download mess
53. sn t showing you probably need to adjust the intensity of the dot See Setting the Scope Dot Intensity later in this section Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 22 TAKING A BASIC MEASUREMENT Ungrouping Sensors on the But suppose for example that an obstruction or 200XL other unusual situation prevents you from taking a reliable reading with one or the other sensor In that case you can shoot an SD measurement reposition the instrument slightly and then take an INC measurement Then scroll to HD and you will see that the instrument has calculated a horizontal distance from your two separate sensor readings The Impulse 200XL takes only those readings necessary to satisfy the current option This makes it possible to ungroup the sensors by taking a separate reading with each sensor Then by scrolling to another option the instrument will combine those readings to calculate other related measurements For example when SD is measured only the range sensor is activated and when INC is measured only the tilt sensor is activated Now a horizontal distance HD measurement is calculated from the slope distance SD which is read by the range sensor and the inclination INC which is read by the tilt sensor The straightforward way of measuring HD is to simply shoot when the HD indicator is showing the instrument calculates everything at once Electronic Copy LTI s Impul
54. tal press Back twice and repeat step 4 Page 37 TARGETING When selecting a target keep in mind that most surfaces can be measured directly However long distances multiple potential targets or lack of an actual physical object to shoot to may require additional techniques Here are some hints which are discussed in greater detail later in this section e the absence of a physical target a simple sheet of white paper suffices when shooting to moderate distances Long ranges are most easily acquired using a spectral or retroreflector e Brush rain fog or snow can all serve as unintended targets reflecting light back to the instrument A gate window can be set up to reject targets outside the range window The absolute minimum range of the Impulse is essentially zero in theory you can measure objects right up against the front panel You can increase the minimum range artificially by setting the short measurement gate The absolute maximum range is about 2200 meters 2400 yards You can decrease the maximum range artificially by setting the long measurement gate The most accurate angle measurements with a 200XL are taken when the instrument is held level with respect to its left right axis Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 38 TARGETING Listening to the Instrument The Impulse emits a variety of ticks and tones when it takes readings The sounds vary
55. the operation of the buttons To help you level the instrument the yoke has a bubble level To achieve level make sure the bubble is centered in the indicator circle Instrument mounting thumbscrew Bubble level Yoke mounting Screw Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 64 USING A TRIPOD MONOPOD Yoke Mount The yoke mounting bracket attaches to the Impulse on the side opposite the hand strap Simply screw it into place If you are switching the hand strap from one side to another you will also need to reconfigure the yoke mounting bracket for use on the opposite side PART PART NAME QUANTITY 1 Yoke Plate 1 2 Shaft Adapter 1 3 Yoke Mount Block 1 4 Screw M3x10 4 5 Split Ring Lock Washer 4 6 Screw M4x8 1 7 Screw M3x16 1 Electronic Copy LTI s Impulse XL User s Manual 27 Edition December 1997 Page 65 USING A TRIPOD OR MONOPOD To attach the instrument to a tripod or monopod first attach the mounting bracket to the side of the instrument then attach the yoke to the pod Align the thumbscrew with the middle hole in the attachment at the top of the bracket and tighten the thumbscrew Friction Adjust To adjust the friction tighten the thumbscrew into the yoke mount and adjust the nut as needed Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 66 USING A TRIPOD OR MONOPOD Compass
56. the slope distance measurement Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 11 INSTRUMENT OPTIONS AND INDICATORS Indicators Warnings These indicators impart status warnings or hints They are fme Stn Down Arrow Flashing 200XL only Take base measurement in HT option or first measurement in tilt calibration DN Up Arrow Flashing 200XL only Take top measurement in HT option or second measurement in tilt calibration Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 12 INSTRUMENT OPTIONS AND INDICATORS Settings Options The Impulse has system settings and options that allow you to use the Impulse in the most efficient and convenient way for you The following list covers the options that are user selected Cmdm fmm Seaton LED Backlight LED backlight is on UNITS Units Select measurement units F English units HT and VD in Feet SD HD and MULTI in Yards M Meters D Degrees G Grads 96 Percent Slope Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 13 INSTRUMENT OPTIONS AND INDICATORS Additional Note The middle portion of the screen in addition to displaying measurements is itself sometimes used as an indicator of sorts if dashed lines appear the instrument is ready to take a measurement if the middle of the screen is blank the option has suboptions that can be accesse
57. ting from accident disaster misuse abuse or non LTI modification of the product To activate your warranty return the warranty card from the front of this manual to LTI within 30 days of purchase To obtain limited warranty service deliver the product during the one year period to the Laser Technology Service Center and provide proof of the purchase date If the product is delivered by mail you agree to insure the product or assume the risk of loss or damage in transit and to prepay the shipping container or equivalent LTI hereby disclaims all other express and implied warranties for the product including warranties of merchantability and fitness for a particular purpose Some states do not allow the exclusion of implied warranties so the above limitation may not apply to you Electronic Copy LTI s Impulse XL User s Manual 27 Edition December 1997 LIMITED WARRANTY If the product is not in good working order as warranted above your sole remedy shall be repair or replacement as provided above In no event will LTI be liable to you for any damages including any lost profits lost savings or other incidental or consequential damages arising from the use or inability to use such product Furthermore LTI shall not be held responsible if any LTI authorized dealer has been advised of the possibility of such damages or for any claim by any other party Note The Warranty Validation Card at the front of this manual must be co
58. ton panels on either side of the unit and a liquid crystal display LCD screen on the rear panel Sensors The Impulse laser range sensor provides immediate access to slope distance values The Impulse determines distance by measuring the time of flight of short pulses of infrared light The Impulse has a broad spectrum of sensitivity and can work with both reflective and nonreflective targets Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 6 THE ANATOMY OF THE IMPULSE The maximum measurement distance varies with target and environmental conditions The absolute maximum is about 2200 meters 2400 yards for the Impulse XL In the 200XL model the tilt sensor measures vertical angles which the Impulse uses to calculate height and elevation and to determine slope reduced horizontal distances The tilt sensor is capable of taking full 360 degree angular measurements which is displayed by the tilt sensor as 180 degrees The instrument held level is at O degrees and is rotated up through 180 degrees and down through 180 degrees Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 SightingScope The sighting scope mounted atop the Impulse will vary depending upon which option you chose The single power sighting scope features an in scope red aiming dot to help you aim accurately to the target You can vary the intensity of the dot to account for different lightin
59. ual 2 Edition December 1997 Page 61 DOWNLOADING DATA Range Cumulative Impulse Model IP200 format Message CR400 format Message 200XL Query Query RC PLTIT RQ RC Response download Response download RC 208 244 M 65 PLTIT RC 208 M 244 M 60 Data cleared to zero Data cleared to zero RC 0 00 0 00 M 1D PLTIT RC 0 00 0 00 M 09 Impulse Model IP100 format Message CR400 format Message 100XL Query Query RC PLTIT RQ RC Response download Response download RC 244 M FF PLTIT RC 244 M 17 Data cleared to zero Data cleared to zero RC 0 00 M DB PLTIT RC 0 00 M 3B Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 62 DOWNLOADING DATA Height Impulse Model IP200 format Message CR400 format Message 200XL Query Query HT PLTIT RQ HT Response download Response download HT 37 2 M F4 PLTIT HT 37 2 M 30 Data unavailable HT PLTIT HT 65 Data unavailable Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 63 USING A TRIPOD MONOPOD Laser Technology Inc can supply accessories that allow you to mount the Impulse on a tripod or monopod Your Impulse also has a mounting block attached to the bottom of the instrument The accessories are e yoke and mounting bracket e compass and compass mount Yoke The yoke features an open design to allow you to mount the Impulse to the pod without interfering with
60. unction and fall into four categories measurement modes measurement modifiers indicators warnings and settings options Note Your instrument may not have all the features described Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 9 INSTRUMENT OPTIONS AND INDICATORS Measiremeit Modes Using a laser sensor and optional tilt sensor the Impulse XL can take six possible measurements Explanation 200XL only Measures the height of an object Allows the Impulse to take more than one measurement in succession CUM maintains a cumulative distance measurement for a succession of targets DIFF calculates the differences between a base distance and a succession of targets Electronic Copy LTI s Impulse XL User s Manual 2 Edition December 1997 Page 10 INSTRUMENT OPTIONS AND INDICATORS Measurement Modifiers Measurement modifiers are options that can help you select or eliminate targets and help you take the most accurate measurements possible The measurement modifiers are Measurement Gate Sets up a measurement gate or window When gates are set the Impulse will only measure targets that are at or beyond the window s minimum distance and at or within the window s maximum distance G Gate option is on S Short gate is set increasing the minimum measuring distance L Long gate is set decreasing the maximum measuring distance OFFSET Range Offset Adds or subtracts a distance from
61. y 0183 the CR400 format does not respond to unrecognized header formats malformed messages or messages with invalid checksums Queries The data you wish to download must appear in the display window If it does not scroll to the appropriate option A CR400 format query message from the download device to the Impulse is in this general format Electronic LTI s Impulse XL User s Manual 27 Edition December 1997 Page 54 DOWNLOADING DATA PLTIT RQ datatype lt CR gt lt LF gt Download Messages where In CR400 format the Impulse downloads data PLTIT RQ messages in this general form identifies this as a CR400 format request PLTIT datatype value units message where datatype identifies the type of data you are requesting Legal values SPLTIT is the Criterion message identifier ID Instrument version number HV Horizontal vector HT Height data 200XL only garaipe AD Range difference is the data type Legal values RC Range cumulative ID Instrument version number HV Horizontal vector lt CR gt lt LF gt HT Height data 200 XL only is a carriage return line feed combination RD Range difference Range cumulative If the optional NMEA query checksum is used the Impulse will ignore it Electronic LTI s Impulse XL User s Manual 27 Edition December 1997 Page 55 specifies measurement value and the units in which that value
62. y and carefully pick off the dried paint with your fingernail Batteries If you won t be using the instrument again soon remove the batteries before storing it Page 69 Caring for the Scope Do not attempt to lubricate the scope It is sealed from within using O rings and special compounds All seals are permanent and require no maintenance Clean the lenses with lens cleaning solution and a soft dry cloth or lens tissue Use a lens brush to remove surface dust and loose particles Remove paint splatters by letting them dry and carefully picking them off with your fingernails The windage and elevation adjustment screws are permanently lubricated do not attempt to lubricate them Keep the turret caps on except when you are aligning the Scope Checking the Display Screen It is a good idea to periodically check the display screen to make certain that all display segments still show up You can do that by powering on as usual but instead of releasing the Fire button immediately hold it down For as long as you hold the button all segments of the display should show allowing you to identify any that no longer display See Instrument Options and Indicators for a complete drawing of all display indicators While you are holding the fire button you can also display the Impulse instrument version number by pressing any other button Electronic Copy LTI s Impulse XL User s Manual

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