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Laser Technology IMPULSE LR User Manual

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  • Page 1 IMPULSE IMPULSE LR...
  • Page 2 ARRANTY 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.
  • Page 3 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...
  • Page 4 Electronic Copy of LTI’s Impulse User’s Manual 8 Edition © October 1998...
  • Page 5 RECAUTIONS Avoid staring directly at the laser beam for prolonged periods of time. The Impulse is designed to meet stringent F.D.A. eye safety requirements and is classified as eye-safe to Class 1 limits, which means that virtually no hazard is associated with directly viewing the laser output under normal conditions.
  • Page 6 OREWORD The Laser Technology, Inc. Impulse is a light-weight, hand-held laser ranging instrument that allows you to quickly and conveniently measure distances, heights, and vertical angles. The Impulse uses sensors to measure distances and vertical angles, and menu-driven software to convert sensor readings to meaningful measurements.

  • Page 7: Table Of Contents

    ABLE OF ONTENTS GETTING STARTED QUICKLY ....TAKING A BASIC MEASUREMENT ..20 ......... ASIC MPULSE ACKAGE 200....22 NGROUPING ENSORS MPULSE ............. CCESSORIES ....23 ETTING THE COPE NTENSITY ....... NSERTING THE ATTERIES ....23 ETTING THE EASUREMENT NITS ........OWERING N AND ..........24 ERCENT LOPE...
  • Page 8 ABLE OF ONTENTS Setting a Short Gate Value......Range Difference .........64 Setting a Long Gate Value ......Range Cumulative........65 Clearing Gate Values........Height ............66 ......SING THE ILTER PTION USING A TRIPOD OR MONOPOD ...67 ... OTES ON EASUREMENT ODIFIERS ..............67 THE EDIT MODE ........

  • Page 9: Getting Started Quickly

    ETTING TARTED UICKLY When you receive your Impulse laser instrument, Accessories check to see that you have received everything you In addition, you may have ordered one or more of ordered and that it all arrived undamaged. these optional accessories: Basic Impulse Package •...

  • Page 10: Inserting The Batteries

    ETTING TARTED UICKLY The “voltage check” cells are slightly larger in Inserting the Batteries diameter and will cause problems when inserting Load the batteries by inserting them positive-end- into and extracting from the battery compartment. first into the battery compartment on the Impulse’s The diameter of the battery tube on your Impulse back panel.

  • Page 11: Powering On And Off

    ETTING TARTED UICKLY 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 Press this button to power on instrument, however, power on and off by using the...

  • Page 12: Taking A Measurement

    ETTING TARTED UICKLY The indicator “HD” means the instrument is Taking a Measurement prepared to take a horizontal distance When you power on the instrument for the first measurement. (The slope distance indicator “SD” time, the LCD screen on the rear panel shows this will appear on the Impulse 100.) display: The “F”...
  • Page 13 ETTING TARTED UICKLY automatically turns its red dot off if a measurement The large number in the center of the display is the has not been taken within a predetermined time distance to the target. limit. The first press will turn on the red dot, the “DNLD”...

  • Page 14: The Anatomy Of The Impulse

    NATOMY OF THE MPULSE The Impulse consists of a laser range sensor, a Sighting scope fluid tilt sensor (Impulse 200 only), a sighting scope, and a data output port. The sensors are Transmit lens integrated with software controls and accessed through the two 3-button panels on either side of the unit and a liquid crystal display (LCD) screen on Receive lens...

  • Page 15: Sighting Scope

    NATOMY OF THE MPULSE In the Impulse 200, the tilt sensor measures vertical lighting conditions. See “Setting the Scope Dot angles, which the Impulse uses to calculate height Intensity” under Taking a Basic Measurement. and elevation and to determine slope-reduced The variable-power sighting scope features an in- horizontal distances.

  • Page 16: Instrument Options And Indicators

    NSTRUMENT PTIONS AND NDICATORS 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.

  • Page 17: Measurement Modes

    NSTRUMENT PTIONS AND NDICATORS Measurement Modes Using a laser sensor and optional tilt sensor, the Impulse can take six different types of measurements: Indicat Function Explanation Height (Impulse 200 only) Measures the height of an object Horizontal Distance (Impulse 200 only) Measures the level distance between the Impulse and the plane of the target object Vertical Distance (Impulse 200 only) Measures the distance between a target object and...

  • Page 18: Measurement Modifiers

    NSTRUMENT PTIONS AND NDICATORS 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: Indicator Function Explanation GATE Measurement Sets up a measurement “gate” or “window.” When gates are set, the Gate Impulse will only measure targets that are at or beyond the window’s minimum distance, and at or within the window’s maximum distance...

  • Page 19: Indicators / Warnings

    NSTRUMENT PTIONS AND NDICATORS Indicators / Warnings These indicators impart status, warnings, or hints. They are: Indicator Function Explanation LASER Laser The laser sensor is firing BATT Battery (Flashing) Time to replace the batteries DNLD Download Measurement is available for download Down Arrow (Flashing) (Impulse 200 only) Take base measurement in HT option or first measurement in tilt calibration...

  • Page 20: Settings / Options

    NSTRUMENT PTIONS AND NDICATORS 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. Indicator Function Explanation System...
  • Page 21 NSTRUMENT PTIONS AND NDICATORS 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 accessed by pressing Fire.

  • Page 22: Error Conditions

    (Impulse 200 only) Invalid tilt sensor reading. Contact Laser Technology if error persists. You can opt to have measurements with errors (Impulse 200 only) Tilt reading outside ±90 degree discarded instead of downloaded when in the limit on % slope or height measure-ment.

  • Page 23: Using The Button Panels

    SING THE UTTON ANELS You control the Impulse through two 3-button the primary Fire button; “Fire2” means the panels on either side of the instrument. One panel secondary Fire button. is always designated the primary button panel; the rear of instrument other, the secondary panel.

  • Page 24: Anels

    SING THE UTTON ANELS 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: • the operation, • whether the button is on the primary panel or secondary panel, and •...
  • Page 25 SING THE UTTON ANELS Button Function Powers on the instrument. Fire 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 sighting 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.
  • Page 26 ETTING UP FOR HANDED PERATION 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.
  • Page 27 ETTING UP FOR HANDED PERATION 2. Repeatedly press Forward or Back until the Reconfiguring the Button Panels indicator SYS shows in the upper right quadrant The Impulse has a three-button control panel on of the back panel display screen. each side of the instrument. One of those panels is 3.

  • Page 28: Taking A Basic Measurement

    AKING A ASIC EASUREMENT The Impulse 200 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 100 has no way to measure angles, and takes only slope distance measurements. The five measurements are related;...
  • Page 29 AKING A ASIC EASUREMENT You have just taken an HD (horizontal distance) Do this..to get this result: measurement to your fence, or whatever target you Press Fire. (The RIGHT chose. Each of the basic measurements operates HD indicator in essentially the same simple way—power on, aim, shows on an and fire—except that you sometimes have a couple Impulse 200;...

  • Page 30: Ungrouping Sensors - Impulse

    AKING A ASIC EASUREMENT this section.) If after pressing Fire the red dot still Now, a horizontal distance (HD) measurement is isn’t showing, you probably need to adjust the calculated from SD, which is read by the range intensity of the dot. See Setting the Scope Dot sensor, and INC, which is read by the tilt sensor.

  • Page 31: Setting The Scope Dot Intensity

    AKING A ASIC EASUREMENT 4. Press Fire to toggle between the F (feet) and M Setting the Scope Dot Intensity (meters) indicators. The optional red dot sighting scope has six intensity 5. Press Forward to select F or M. The D settings which vary from bright to off.

  • Page 32: Percent Slope

    AKING A ASIC EASUREMENT reset to zero. Basic and height measurements are option, and an inclination measurement is cleared, and only a cumulative distance total will be displayed, that measurement is a percent slope, not converted from the current measurement units to an inclination angle.

  • Page 33: Power Conservation Intervals

    AKING A ASIC EASUREMENT and V indicators begin flashing at the right Power Conservation Intervals center of the screen. The numeric display area To help conserve its batteries, the Impulse will be showing the current interval settings, like incorporates two timed power-off intervals, one for this: the scope aiming dot and one for the instrument as RIGHT...

  • Page 34: Turning The Beeper O N Ando

    AKING A ASIC EASUREMENT scopes only. To turn the beeper on or off: ALL On both intervals full on (the instrument will not power down, and the scope 1. Use Forward and Back as needed to display dot will never turn off). Care should the SYS indicator.

  • Page 35: Taking A Height Measurement

    AKING A EIGHT EASUREMENT Measuring a height presents a simple geometric The Impulse implements the process with the HT problem easily within the capabilities of the Impulse option. The option works by requiring that the 200: solve the triangle formed by the object, the measurements be taken in a specific order.
  • Page 36 AKING A EIGHT EASUREMENT Button/Action Result (example) Button/Action Result (example) Press Fire to Sight the target RIGHT turn on the through the instrument scope _ _ _ _ _ _ Press Fire to RIGHT take the Press Back to horizontal RIGHT reach the Height distance...
  • Page 37 AKING A EIGHT EASUREMENT another target. At this point, you have several Button/Action Result (example) options: Aim to the top of RIGHT • the object (even Pressing Forward downloads the height if you can’t sight measurement you just took. it), and press •...

  • Page 38: Height Pivot Offset

    AKING A EIGHT EASUREMENT Height Measurement Hints: The Impulse uses an To acquire multiple height points on a single tree HD and the two successive INC readings to (or other object) whose height you have just calculate a height. Therefore, when taking a base measured, press Back once, reshoot the top angle, or top angle reading, you don’t need an actual then press Fire to display the new height.
  • Page 39 AKING A EIGHT EASUREMENT calculate a horizontal distance of the highest However, if you hold the instrument close to your possible accuracy. eye and tilt your head during a height reading, the pivot point should be moved from the center of the The measuring point of the Impulse is at the center instrument to the back of your head.

  • Page 40: Additional Notes

    AKING A EIGHT EASUREMENT display window. At that point, the numeric Additional Notes display shows the current pivot offset value with Some additional notes on using the HT option and the first digit blinking. the pivot offset: 4. Edit in the pivot offset value in whole feet or •...

  • Page 41: Calculating A Pivot Offset

    AKING A EIGHT EASUREMENT Now, use a scientific calculator to compute your Calculating a Pivot Offset pivot offset: Before you can determine your pivot offset value, you need to get comfortable with taking height − Height Height known laser Offset measurements and determine where you normally pivot θ...

  • Page 42: Taking A Multiple Measurement

    AKING A ULTIPLE EASUREMENT The multiple measurement option (MULTI) allows Here’s how you take difference measurements: the Impulse to take measurements to a succession 1. Press Forward/Back until the MULTI indicator of targets. What it does with those measurements shows in the upper right quadrant of the display depends upon the MULTI suboption you are in at screen.
  • Page 43 AKING A ULTIPLE EASUREMENT Impulse 200: SEL shows in the numeric 4. To set the point by laser, aim to a suitable display area, and HD flashes just to the left of target and press Fire. If the aiming dot is off on MULTI.

  • Page 44: Cumulative Measurements

    AKING A ULTIPLE EASUREMENT 6. Aim to a target and press Fire. Again, if the Cumulative Measurements aiming dot is off on the red dot scope, the first A cumulative measurement lets you move from one press turns it on, and you must press Fire again target point to another, stopping at each one to to fire the laser.
  • Page 45 AKING A ULTIPLE EASUREMENT 4. Press Fire to enter the CUM subprocedure. press Forward to move to the next display. Impulse 100: The next display is a series of To select SD measurements, press Fire to start dashes, with two arrows flashing in the right SD flashing.
  • Page 46 AKING A ULTIPLE EASUREMENT If you are satisfied with the measurement, and Additional Notes: wish to add it to your total, press Forward. The The cumulative measurement total is saved in instrument adds the current measurement to memory even if the instrument is powered off. If the total and displays the new total.

  • Page 47: Targeting

    ARGETING When selecting a target, keep in mind that most long ranges due to the instrument’s reduced surfaces can be measured directly. However, long sensitivity in filter mode. distances, multiple potential targets, or lack of an • Long ranges are most easily acquired using a actual physical object to shoot to may require spectral or retroreflector.

  • Page 48: Listening To The Instrument

    ARGETING Listening to the Instrument If the audio update feature is on, the Impulse will emit a variety of ticks and tones when it takes readings (see “Turning the Beeper On and Off” under Taking a Basic Measurement). The sounds vary depending on what the instrument is doing, and you can tell what is happening during a measurement simply by listening.

  • Page 49: Aiming Point

    ARGETING Aiming Point Under certain circumstances, you may want to account for the displacement between the center of the scope lens and the measuring point of the laser instrument itself. The effect of the displacement is most noticeable at short range—generally less than aiming point 150 meters (500 feet).

  • Page 50: Setting The Range Offset

    ARGETING actual distance, because the measuring point of the Setting the Range Offset instrument is at its center. Entering a range offset of The Impulse has a feature that allows you to alter 0.09 meters (.29 feet) would move the the measuring point of the instrument.

  • Page 51: Setting A Gate Window

    ARGETING Here’s how to specify a range offset: measurement, which is used to calculate HD and VD. 1. Use Forward/Back as necessary to show the SYS option indicator. Setting a Gate Window 2. Press Fire to select the SYS option. Using the Gate option, it is possible to restrict the Impulse to targeting objects within specified ranges.

  • Page 52: Turning On The Gates

    ARGETING In essence, the gate window artificially extends the is already set at 10 feet, for example, and then you instrument’s minimum range and restricts its set the long gate to 12 feet, the instrument resets maximum range. One of the uses of the gate the short gate to 7 feet.

  • Page 53: Setting A Short Gate Value

    ARGETING will display (in addition to the G indicator). gate value displays. Continue to the next step. 4. To set gate values, press Forward. The S To back out to the main display, press Back. indicator flashes and the short gate value The short gate is now set, and the S indicator is displays.

  • Page 54: Clearing Gate Values

    ARGETING 2. Press Fire to select the SYS option. The Clearing Gate Values FILTER indicator begins to blink, and the If you want to clear out a gate value instead of current state of the FILTER option is shown in setting it, access the value as described above and the middle of the screen.

  • Page 55: Notes On Measurementm

    ARGETING • Notes on Measurement Modifiers When using gates and offsets together, keep the following in mind: Gates and offsets are • Due to hardware constraints, gates work best additive; a gate will reflect the same offset that when the short gate value is 5 to 6 meters (15 is applied to the target.
  • Page 56 ARGETING clear the range offset to avoid confusion. • 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.

  • Page 57: The Edit Mode

    • The Impulse has an editor which can be used to The left-most digit will be flashing. Press manually enter numeric values for the range offset, Forward2 or Back2 to toggle the first digit gate distances, the set point of difference distance between zero (which represents a positive measurements, and in the Impulse 200, the height value) and the minus sign (-).
  • Page 58 When your edited value is correct, press Fire. A 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! Page 50...

  • Page 59: Downloading Data

    OWNLOADING The Impulse back panel contains a 4-pin serial The data you wish to download must appear in the connector that allows you to download data to a display window for either instrument invoked or data collector or notebook computer. The requested data to be valid.

  • Page 60: The Dnld Option

    OWNLOADING every time the instrument takes a measurement. 2. Press Fire to select the SYS option. The download messages can take one of two 3. Press Forward repeatedly until the DNLD formats: the Impulse native format or, for those who indicator appears in the lower, right corner of already have download software designed for the the display window, and On or OFF shows in...
  • Page 61 OWNLOADING Impulse 100: While CR400 is showing, you Impulse 200: While CR400 is showing, you have the option of pressing Fire2 to toggle the have the option of pressing Fire2 to toggle the range units (F or M) and angle indicator (D) on D or G indicator on and off.

  • Page 62: Discarding Error Messages

    OWNLOADING signal to the ‘trigger’ pin on the serial connector. Discarding Error Messages This option requires a special order download cable When using the automatic download mode, you that connects the remote trigger signal from the can choose whether to download every Impulse to the ‘RTS’...

  • Page 63: Serial Interface Specifications

    OWNLOADING With the red dot sighting scope, if the red dot is off Pin-out assignments for the Impulse serial port are: when the remote trigger is activated, it is not necessary to trigger twice to first turn on the dot and then take a measurement.

  • Page 64: Download Messages

    OWNLOADING where: where: datatype datatype is the kind of data you are identifies the data type. Legal values: requesting. Legal values: $ID = Instrument version number $BM = Basic measurements $ID = Instrument version number $HT = Height data (Impulse 200 only) $BM = Basic measurements $RD = Range difference $HT = Height data (Impulse 200 only)

  • Page 65: Cr400 Format

    OWNLOADING few thousand feet, the maximum possible of a complemented, no-carry, binary addition of values can only be obtained through cumulative all the characters between the dollar sign and distance measurements or by using a large the asterisk. offset. <CR> is a carriage return. dunits CR400 Format specifies the units for distance measurements.
  • Page 66 OWNLOADING trailing characters, numeric values, delimiting where: character, checksums, maximum line length, data $PLTIT,RQ, rate, and bit format are followed exactly. identifies this as a CR400-format request message. As required by NMEA 0183, the CR400-format does not respond to unrecognized header formats, datatype malformed messages, or messages with invalid identifies the type of data you are...

  • Page 67: Download Messages

    OWNLOADING to specify the downloaded values, except that Download Messages the final units designator is not followed by a In CR400 format, the Impulse downloads data comma. messages in this general form: A value may have 1-2 decimal places, $PLTIT, datatype , value, units, ... * csum depending on how many will fit in a six-digit where: value.

  • Page 68: Specific Message Formats

    OWNLOADING D=degrees Specific Message Formats G=grads (Impulse 200 only) The table on the following page shows example *csum message formats for each data type, in both CR400 consists of an asterisk followed by a two-digit and IP200/IP100 format. hexadecimal checksum. The checksum is The examples in the table use these values and calculated by XORing the eight binary data bits units:...

  • Page 69: Version Id

    OWNLOADING Version ID Impulse IP200-format Message CR400-format Message Model Query: Query: $PLTIT,RQ,ID Response/download: Response/download: $ID,IP200,1.40*2C $PLTIT,ID,IP200,1.40*44 Impulse IP100-format Message CR400-format Message Model Query: Query: $PLTIT,RQ,ID Response/download: Response/download: $ID,IP100,1.40*2D $PLTIT,ID,IP100,1.40*47 Page 61 Electronic Copy of LTI’s Impulse User’s Manual 8 Edition © October 1998...
  • Page 70 OWNLOADING Basic Measurements and Horizontal Vector Impulse IP200-format Message CR400-format Message Model Query: Query: $PLTIT,RQ,HV Response/download: Response/download: $BM,27.5,34.79, ,22.58,15.7,F,D*17 $PLTIT,HV,22.58,F, , ,34.79,D,27.5,F*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, ,34.79 , , , ,F,D*AD $PLTIT,HV,22.58,F,0.00,D,34.79,D,27.5,F*63 $BM, , , , , ,F,D*B2...
  • Page 71 OWNLOADING Basic Measurements and Horizontal Vector (continued) Impulse IP100-format Message CR400-format Message Model Query: Query: $PLTIT,RQ,HV Response/download: Response/download: $BM,27.5, , , , ,F,D*E6 $PLTIT,HV, , , , , , ,27.5,F*3F Bad reading or null data: Bad reading or null data: $BM, , , , , ,F,D*B2 $PLTIT,HV, , , , , , , ,*67 Response/download with dummy HD field:...

  • Page 72: Range Difference

    OWNLOADING Range Difference Impulse IP200-format Message CR400-format Message Model Query: Query: $PLTIT,RQ,RD Response/download: Response/Download: $RD,41.00,-1.35,F*B8 $PLTIT,RD,41.00,F,-1.35,F*70 Bad reading or null data: Data unavailable: $RD,41.00, ,F*AC $PLTIT,RD, , , ,*6F $RD, , ,*E5 Impulse IP100-format Message CR400-format Message Model Query: Query: $PLTIT,RQ,RD Response/download: Response/Download:...

  • Page 73: Range Cumulative

    OWNLOADING Range Cumulative Impulse IP200-format Message CR400-format Message Model Query: Query: $PLTIT,RQ,RC Response/download: Response/download: $RC,208.34,244.00,F*49 $PLTIT,RC,208.34,F,244.00,F*67 Data cleared to zero: Data cleared to zero: $RC,0.00,0.00,F*24 $PLTIT,RC,0.00,0.00,F*02 Impulse IP100-format Message CR400-format Message Model Query: Query: $PLTIT,RQ,RC Response/download: Response/download: $RC, ,244.00,F*78 $PLTIT,RC, , ,244.00,F*32 Data cleared to zero: Data cleared to zero: $RC, ,0.00,F*E2...

  • Page 74: Height

    OWNLOADING Height Impulse IP200-format Message CR400-format Message Model Query: Query: $PLTIT,RQ,HT Response/download: Response/download: $HT,37.02,F*CB $PLTIT,HT,37.02,F*0B Data unavailable: Data unavailable: $HT, ,*0B $PLTIT,HT, ,*65 Page 66 Electronic Copy of LTI’s Impulse User’s Manual 8 Edition © October 1998...

  • Page 75: Using A Tripod Or Monopod Oke

    SING A RIPOD OR ONOPOD Laser Technology, Inc. can supply accessories that allow you to mount the Impulse on a tripod or monopod. Instrument mounting thumbscrew The accessories are: • yoke and mounting bracket • compass and compass mount Bubble level...

  • Page 76: Yoke Mount

    SING A RIPOD OR ONOPOD 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.
  • Page 77 SING A RIPOD OR ONOPOD 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.

  • Page 78: Compass Mount

    SING A RIPOD OR ONOPOD Compass Mount Compass The compass mount attaches to the yoke and The compass features two hairlines, one of which is extends over the top of the mounted instrument. On movable. The fixed hairline is for reading the top of the mount is a housing that fits over the magnetic bearing;...

  • Page 79: Note For Criterion Users

    SING A RIPOD OR ONOPOD You must set the movable hairline to account for Note for Criterion Users the declination in your area. If you are using a If you are using a Criterion staff, subtract 5 inches Suunto KB-14D compass, set the declination (0.42 feet) from the number silk-screened at the crosshair by moving it east or west of the magnetic bottom of the staff.

  • Page 80: Care And Maintenance

    ARE AND AINTENANCE before using the instrument for measurement. Operating Temperature Cleaning and Storage The instrument components are rated for a temperature range of -30° C (-22° F) to 60° C (140° Clean the instrument after each use, before F). Do not expose the instrument to temperatures returning it to its case.

  • Page 81: Caring For The Scope

    ARE AND AINTENANCE clean cloth or lens tissue. If paint spatters on a letting them dry and carefully picking them off with lens, let it dry and carefully pick off the dried your fingernails. paint with your fingernail. The windage and elevation adjustment screws are •...

  • Page 82: Checking The Display Screen

    ARE AND AINTENANCE for a complete drawing of all display indicators. If you fail to change the batteries at that point, the keys will lock out. While you are holding the fire button, you can also Realigning the Scope display the Impulse instrument version number by The scope may become misaligned by a heavy pressing any other button.
  • Page 83 ARE AND AINTENANCE • Finally, make certain you know the scope’s A highly stable base for the instrument. A tripod definition of which way is up. To adjust the scope is recommended. UP (marked L) turn the screw clockwise. To adjust The target that you choose is critical to the success the scope RIGHT (marked UP) turn the screw of the alignment operation.

  • Page 84: Mpulse 200

    ARE AND AINTENANCE Aligning the Tilt Sensor on the Impulse Go to SYS/BORE “tt” is displayed. Aim at the center of the The instrument emits a tone. Periodically check, and realign if necessary, the target and hold down the The frequency varies as you instrument’s tilt sensor using the CAL suboption in Fire button.
  • Page 85 ARE AND AINTENANCE target precisely level with the Impulse scope. If you properly aligned for this calibration to be do not have such an instrument, use one of the accurate. additive offset methods, such as the “desktop” 4. Take an inclination measurement and note additive offset, which is also the factory calibration down the value.
  • Page 86 ARE AND AINTENANCE 3. Clear the range offset to zero. begin a series of regularly spaced tones, press Fire again.) 4. Scroll to the SYS option and press Fire. You will have two seconds to stabilize and quiet 5. Press Forward until CAL begins blinking in the the instrument before any measurement is lower right portion of the display window and taken.
  • Page 87 ARE AND AINTENANCE previously. The two readings should be within 0.05 degrees one another. 13. 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 (50 to 100 feet) away.

  • Page 88: Specifications

    PECIFICATIONS Note: these specifications are subject to change. Weight: 1 kg (2.2 lb.) Size: 15.2 x 6.4 x 12.7 cm (6 x 2.5 x 5 in) Max Range: 575 meters (1880 feet) to a cooperative target Target Ranges: Impulse 100/200: 50 meters to overhead cable/stake 250 meters to rock face/building Impulse 100LR/200LR:...

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