Operation Manual LONG RANGE LASER RANGEFINDER LRB 20000C. 105 Sparks Ave., Toronto, ON, M2H 2S5, Canada

Transcription

1 Operation Manual LONG RANGE LASER RANGEFINDER LRB 20000C 105 Sparks Ave., Toronto, ON, M2H 2S5, Canada

2 IMPORTANT INFORMATION Read prior to activation You have purchased a sophisticated electronic device, which emits invisible hazardous laser radiation. To operate it properly, please read this manual carefully. NEVER direct laser radiation at people or animals NEVER stare into direct or reflected laser beam NEVER aim the unit at the sun or bright light sources NEVER subject the unit to impacts NEVER transport the unit without the case NEVER disassemble the unit. This device contains high voltage components, which may be hazardous for you! NEVER reverse polarity of the battery ALWAYS keep the unit out of the reach of children ALWAYS remove the battery when the device is not in use for a long period ALWAYS store in a warm dry place when the device is not in use Caution - use of controls or adjustments, or performance of procedures other than those specified herein may result in hazardous radiation exposure Caution - the use of optical instruments such as binoculars, loupes, mirrors, etc. with this product increases eye hazard LRB 20000C belongs to Class 3b laser radiation hazard (IEC 825). ii

3 TABLE OF CONTENTS 1. BRIEF DESCRIPTION ABBREVIATIONS Specifications DELIVERY SET...6 Standard delivery set...6 Optional accessories...6 LRB 20000C in packing case...7 SPTA set DESIGN AND APPEARANCE...9 General view...9 Detailed view...10 Angular Mount...11 Tripod SAFETY PRECAUTIONS...13 Laser emission hazard...13 High voltage hazard PREPARATION TO OPERATION...15 Check battery voltage...15 Check the rangefinder functioning...15 Align the angular mount...15 Set up the rangefinder...15 Align the rangefinder with base line...16 Check zero elevation reference ER Check the AM compass OPERATING PROCEDURE...19 Distance measurement...19 Azimuth measurement

4 Polar and rectangular coordinates...20 Operation in adverse light conditions RECHARGEABLE BATTERY HANDLING...23 Standard charge: MAINTENANCE...25 Main checks...25 Maintenance general instructions...26 Check Inspection...26 Daily Service...27 In-service Maintenance...27 Cleaning contacts...28 Cleaning optical surfaces...28 Changing silica gel TROUBLESHOOTING...30 To replace the fuse link in the power supply:...30 To replace the rechargeable battery:...31 To replace the fuse links in the charger: STORAGE AND SHIPMENT...33 Preparation to long term storage...33 Storage conditions...33 Shipment WARRANTY CUSTOMER SUPPORT ACCEPTANCE CERTIFICATE

5 1. BRIEF DESCRIPTION RANGEFINDER LRB 20000C (the System) is an advanced electrooptical system that enables a long-range distance measurement. The System is designated for ground surveillance, observation of individual targets and distance measurement. It can be used in geological and engineering surveying, construction works, maritime navigation, and meteorology. Features of the LRB 20000C Laser Rangefinder Digital data output First or last target indication Lightweight design Rugged body Meets all military specifications Combined with the Angular Mount the System enables: measuring horizontal angles and magnetic azimuths; measuring vertical angles and angles of elevation; polar-to-rectangular coordinate conversion and determination of target coordinates from base point coordinates. According to IEC 825 the System belongs to Class 3b laser radiation hazard. Prior to operation: ensure that the optical surfaces are free from grease stains, dirt, cracks and condensed moisture; inspect the rangefinder exterior for physical damage (cracks, dents, deep rust are not acceptable); replace the silica gel if it is pink; charge and insert the battery (battery is supplied uncharged). To secure trouble-free operation: replace the battery when the red LED in the left eyepiece turns on; store the rangefinder in dry places especially during the cold season; 3

6 after exposure to subzero temperatures keep the rangefinder at room temperature for at least two hours before unpacking and then wipe the condensed moisture; while operating the rangefinder at temperatures above 35 C in direct sunlight, protect the System with cover AEP from SPTA set. Moistening the cover with water to cool off the rangefinder is permitted. 2. ABBREVIATIONS The following abbreviations are used herein: AC ckt automatic control circuit AM angular mount DCC direct current converter ER "0" zero elevation reference OP observation post PhD photodetector (assembly) SPTA spare parts, tools and accessories TSGC time sensitivity gain control TIC time-interval counter 4

7 Optics 3. Specifications Magnification Field of view Eye relief Rangefinder Measurement range Accuracy Frequency of measurement Range information memory storage time Laser Wavelength Output energy per pulse Pulse duration Beam divergence, no more Environmental conditions Operational temperature range (7±0.3)x 6.7 ±20 18 mm 100 to 20,000 m ±5 m every 3 second 3 5 s 1060 nm 15 mj 6 ns 0.6 mrad ºC Water resistant MIL STD 810G, Method Shock resistant Yes Relative humidity Up to 98% at 35ºC Air pressure, as low as Other Power supply (battery or external) Rechargeable battery 61 kpa (458 mm Hg) V or V Angular mount (optional) Azimuth / elevation accuracy not more than 1 Weight, kg, max 2.1 Overall dimensions, mm, max Yes 110x215x225 Operating life, measurements, min 50,000 5

8 4. DELIVERY SET Standard delivery set Description Designation Qty Rangefinder AEP Rechargeable battery 10D-0,55С-1 2 Fuse VP1-1 1,0 A 250 V G O-ring G Angular mount replacement lens AEP Rubber membrane replacement buttons G Replacement rubber eye guard AEP Diaphragm AEP Desiccant cartridge replacement key AEP Cleaning kit AEP Coordinate converter AEP Cable 220V AC AEP Cable 27V DC AEP Cable 12V car battery 1 Cable vehicle adapter 1 Cable wheeled truck adapter 1 Cleaning cloth 2 Charger AEP Power converter AEP Silica gel 50 g RS-232 bi-directional communication cable AEP Field bag AEP Plastic hard case (unit only) AEP Snow protective cover G Operation manual 1 Optional accessories Tripod G Angular mount G

9 LRB 20000C in packing case Fig.1. Packing case 1 - Angular mount 2 - Cover 3 - Rechargeable battery 4 - SPTA package 5 - Cover 6 - Cable 7 - Power supply 8 - Charger 9 - Operation manual 10 - Rangefinder in case 7

10 SPTA set Fig. 2. SPTA set 1 - Rechargeable batteryset 2 - Fuse link 3 - Pencil 4 - Sealing ring 5 - Eye shield 6 - Framed lens 7 - Cloth 8 - Eraser 9 - Wrench 10 - Coordinate converter 11 - Charger 12 - Power supply 13 - Silica gel 14 - Bidirectional 18 - Cables 19 - Membrane 20, 21 - Cover 22 - Diaphragm 23 - Synthetic brush 8

11 5. DESIGN AND APPEARANCE General view The rangefinder is designated to: - Survey the ground; - Range fixed targets; - Measure magnetic azimuths; - Measure elevation and vertical angles; Coordinate converter, included in the delivery set, enables conversion of polar coordinates into rectangular coordinates. The System employs time-of-flight delay method to determine distance. The measurement result is displayed in meters on digital range indicator and can be also downloaded to computer. The LRB 20000C assembly (Fig.3) consists of rangefinder 1 mounted on the angular mount 2. The latter is mounted on the tripod 3. Fig. 5. General view. 1 - Rangefinder; 2 - Angular Mount; 3 Tripod 9

12 Detailed view Fig. 6. Rear view 1 - Housing 2 -MEASURE 1 and MEASURE L buttons 3 - Strap 4 - Label 5 - Illumination switch 6 - Observation eyepiece 7 - Indicator eyepiece 8 - Connector 9 - Battery section cover 10 - Power switch Fig. 7. Front view 11 Objective Receiver lens; 12 - Emitter lens; 13 Dehydrator cover 10

13 Angular Mount Angular Mount (AM) (2(Fig. 1 and Fig. 6) enables mechanical measurement of azimuth and elevation. The AM is installed on the tripod through the ball mount a) rear view b) front view 1 Fig. 6. Angular mount 1 - Azimuth adjustment knob 2 - Bracket lock lever 3 - Bracket rail 4 - Bracket lock 5 - Elevation scale 6 - Elevation scale magnifier lens 7 - Elevation adjustment knob 8 - Compass 9 - Azimuth magnifier lens 10 - Azimuth dial lock knob 11 - Elevation and cross level 12 - Azimuth dial 13 - Compass lock knob 14 - Compass release lever Angular mount has azimuth dial 12 (Fig.4) and elevation scale 5 (Fig.4). 11

14 The azimuth dial is marked 0-60, with the whole circle consisting of 6000 mils and small scale division having value of 10 mils. The elevation is marked -5 to +5, which is equivalent to -50 to +50 mils. Value of the small scale division is 1 mil. Tripod The tripod 3 (Fig. 5) is used to adjust the height of the rangefinder and Angular Mount for particular aiming position. The tripod has three telescopic legs. Each leg can be deflected and extended independently. Length of each leg can be adjusted by retracting or extending the moving section. Stay block in the bottom of the head is designated to secure the AM on a log, a stump, or any similar piece of wood that provides stable base. Fig. 5. Tripod 1 - Mounting head; 2 - Base; 3 - Legs; 4 Nut 12

15 6. SAFETY PRECAUTIONS Persons operating the rangefinder must be instructed on safety procedures and be capable of providing the first medical aid related to laser emission. Laser emission hazard The rangefinder emits pulses of invisible laser light at wavelength of 1.06 μm, characterized by the following possible hazards: direct laser radiation; laser radiation reflected from mirror-like objects; diffused reflected laser radiation. Direct and mirror-reflected laser radiation of the rangefinder is dangerous for the naked eye at a distance of 2000 m and less. Cars, building windows, water have mirror-like surfaces. Diffused reflected laser radiation is dangerous at 0.43 m distance from reflecting surface. Optical devices increase hazardous distances proportionally to their magnification ratios. Laser energy at the output objective lens of the rangefinder exceeds safe level for skin by 16% and reaches safe level at a distance of 3.77 m. NEVER: - Turn on the rangefinder while potentially aiming at people or animals; - Measure distance through glass (including windows or doors); - Measure distance to mirror-reflecting surfaces which are closer than 2000 m (this includes, but is not limited to mirrors, car and building windows, optical components, other polished surfaces); - Direct radiation to diffuse-reflecting surfaces (walls, curtains, paper), which are closer than 0.43 m to the rangefinder; Persons in dangerous zone of laser radiation must wear protective goggles for eye protection. 13

16 When the System is not in operation cover the objective lens with the cap. High voltage hazard The rangefinder generates life-hazardous high voltage during operation. NEVER disassemble the rangefinder yourself! Repair the rangefinder only in an authorized facility. 14

17 7. PREPARATION TO OPERATION Check battery voltage To inspect battery voltage, set the power switch 10 (Fig. 6) to ON and check the Low Battery indicator in the indicator eyepiece 7 (Fig. 6). If battery voltage falls below 11V the LED turns red. In this case set power switch 10 (Fig. 6) to OFF and replace the battery. Check the rangefinder functioning Aim the rangefinder at target located at known distance; Set the power switch 10 (Fig. 6) to ON; Press and release the MEASURE 1 button 2 (Fig. 6); When the readiness indicator turns on, release the MEASURE 1 button and read the range; Compare the range measurement result with the actual distance. The rangefinder is in good working order if the range measurement is accurate to 5 m. When target with known distance is not available, range the same target three times. If the measurements differ by less than 5 m the rangefinder functions properly. Align the angular mount Set up the rangefinder To use the AM and tripod for observation, proceed as follows: - Arrange the tripod so that one leg aligns with the ranging direction; - Extend the telescopic legs to the desired length. In case you do not use the tripod: - Unscrew the ball-mount seat from the tripod base; - Fit the stay block on to a stable object and tighten it. - Install and level AM by turning it in spherical joint, aim to bring elevation and cross level 11 (Fig. 6) to the centre of the circle mark. 15

18 - Secure AM by the clamp. - Sliding the rangefinder along the AM bracket guides, fit the AM clamp into the T-shaped opening in the rangefinder bracket, and turn the bracket lock lever 2 (Fig. 6) to lock the rangefinder. Align the rangefinder with base line To align rangefinder to a base line: - Aim the rangefinder at the base point; - Unlock azimuth dial by turning azimuth dial lock knob 10 (Fig. 6); - Align zeros on azimuth dial and on a scale visible through the magnifier lens 10 (Fig.4) by rotating the azimuth dial 12 (Fig. 6); rotate the azimuth dial by the dial itself, not by handle; - Lock the azimuth dial by turning azimuth dial lock knob 10 (Fig. 6). Now all the azimuth measurements will be relative to the base line with 5 mills accuracy. If base point is not available direction to magnetic north or magnetic south can be used as a base line: - Turn compass release lever 14 (Fig. 6) clockwise until it stands against the cut underneath it; - Unlock compass needle by turning compass lock knob 13 (Fig. 6) clockwise; - Align compass needle and the mark on the compass dial (use front dial marked N for aligning to North and rear dial marked S for aligning to South) by turning the rangefinder (rotate Azimuth adjustment knob 1 (Fig. 6) to do so); - Release azimuth dial lock by rotating knob 11 (Fig. 6); - If magnetic declination is unknown align zero on azimuth dial 12 (Fig. 6) and zero on a bottom scale visible through the magnifier lens 10 (Fig.4) by rotating the azimuth dial 14 (Fig. 6); rotate the azimuth dial by the dial itself, not by the azimuth adjustment knob; - If magnetic declination is known align zero on the bottom scale visible through the magnifier lens 10 (Fig. 6) with the magnetic declination value in the azimuth dial 12 (Fig. 6); 16

19 - Lock the azimuth dial by rotating compass lock knob 13 (Fig. 6) counter clockwise. While using compass keep steel or iron objects away the rangefinder, as they may affect compass accuracy. A motor vehicle or a similar massive object must be at least 10 meters away, medium-size objects (hammers, pliers, similar tools) - at least 0.5 m away, and small objects (flashlights, knife, screwdriver, etc.) - 20 cm away. Check zero elevation reference ER 0 ER "0" is the setting of the elevation scale that corresponds to the horizontal position of the rangefinder. To check the zero elevation reference, proceed as follows: - Stick a pole at 50 to 100 m away from the unit and mark it with the rangefinder objective height above the ground level; - Aim the reticle at the mark and read the elevation angle (A1); - swap the rangefinder and the pole positions, and apply another mark to the pole in accordance with the new height of the rangefinder objective; - Aim the crosshair to the new mark of the pole and read again the tilt angle (A2); - find the ER "0" from the formula: A1 + A2 ER "0" = 2 The A1 and A2 values are entered with their respective signs. If the ER "0" value is other than zero, the respective correction is to be taken into account while operating the rangefinder. The error value is subtracted from the elevation measurement, if the latter is positive, and added, if it is negative. When the rangefinder is set up at a new observation point it is necessary to determine the elevation of its horizontal optical axis. To do so, - aim the reticle at an object with known elevation over the horizon E1. 17

20 - Read the number E2 at the right scale against the zero of the left scale. - Calculate Elevation correction ER = E1 E2 Subtract elevation correction from to all your measurements from this observation point and this rangefinder setting. If the rangefinder is moved even within the same observation point determine new elevation correction. Check the AM compass Set up the AM for operation. Check the sensitivity and balance of the compass needle: - Level the AM: o Release the spherical joint of the AM o Bring air bubble to the inner circle of the elevation and cross level 11 (Fig. 6) by tilting the rangefinder; o Tighten the spherical joint. - Release the needle: o Turn compass release lever 14 (Fig. 6) clockwise until it stands against the cut underneath it, o Release compass needle by turning compass release knob 13 (Fig. 6) clockwise; - Unbalance the needle by bringing a metal object (knife, screwdriver or similar) close to the compass, observe the needle move towards the object, and then move the object away. - Check: o The needle balances in a smooth and uniform manner; o When the needle settles its end comes to the same mark; o Needle ends are on a level with the marked plates within ± 0.5 mm at both N and S sides of the compass. If any check fails the AM must be repaired. 18

21 8. OPERATING PROCEDURE Distance measurement To measure distance to an object: - Set the power switch 10 (Fig. 6) to ON position; - Aim the rangefinder so that the target is observed in the central gap of the reticle as close as possible to its centre, and the screening objects (bushes, trees, terrain elevations, etc.), which are located near the target or partially mask it, are outside the gap. Locate the target in the lower portion of the gap, touching the bottom mark of the reticle; - Press MEASURE 1 button 2 (Fig. 6), wait until the readiness indicator comes on and release it; - Read the measured range. It will be displayed on the range indicator for 3-5 seconds. If rangefinder detects more than one target on the laser beam path (for example, a wire in front of a building), decimal point will be displayed in the last decade of the range indicator. To range the desired target measure distance to the first or the last target by pressing the MEASURE 1 or MEASURE L button respectively. If possible, repeat the target ranging once or twice. If the obtained range is correct, the results will not differ by more than 5 m. Azimuth measurement To take azimuth and magnetic azimuth measurements, proceed as follows: - Align the vertical mark of the reticle with the right side of the object; - Read azimuth from the azimuth dial 12 through the azimuth magnifier lens 9 (Fig. 6); - Align the vertical mark of the reticle with the left object and read azimuth again; - Determine the horizontal angle of the object by subtracting the smaller reading from the bigger one. 19

22 When measuring magnetic azimuth remember to add magnetic declination to the reading. Note: For higher precision take several angle measurements and calculate the average value. After each measurement re-aim the rangefinder. To measure elevation angles, proceed as follows: - Align the horizontal mark of the rangefinder reticle with the upper edge of the object; - Read the elevation scale 4 through elevation scale magnifier lens 6 (Fig. 6); - Rotate the elevation knob to align the horizontal mark of the reticle with the lower edge of the object and read elevation again; - Determine vertical angle of the object by subtracting the smaller value from the greater one if both have the same sign (are of the same color on the elevation scale), or by adding them, if the signs are opposite. The elevation is measured with reference to the current horizontal optical axis of the rangefinder. Absolute elevation may be obtained by adding elevation correction. Polar and rectangular coordinates Determine polar coordinates: - Align rangefinder on the angular mount as described in 7.3; - Aim the rangefinder at the object; - Measure azimuth of the object as described in 8.2; - Range the object as directed in 8.1. To convert polar coordinates into rectangular coordinates: - Take out the coordinate converter from the case; - Release the clamp and detach the ruler from the reverse side of the plotting board; - Determine the polar coordinates of the base point and the target and write them down on the plotting board or a special card; 20

23 - Read the magnetic declination of the area ΔA m from the map; - Using magnetic azimuth A m of the base point and the target and magnetic declination find their directional angles: α = A m ΔA m - Write down the directional angles of the base point and the target on the plotting board or card; - Mark numbers of the plotting board with respect to the selected scale (1:25,000 or 1:50,000) and the reference point, observation post and target location; - Read the rectangular coordinates of the base point from the map and write them down on the plotting board or card; - Align the circular scale zero of the plotting board with the zero wheel; - Plot the base point on the circular scale of the plotting board in accordance with the rectangular coordinates; - Read the directional angle of the base point from the circular scale; - Draw a vertical line through the base point on the circular scale. See that the line is parallel to the grid lines; - Use the rule to lay off the observation point-to-base point range on the drawn line. Mark the obtained observation point location point on the circular scale; - Adjust the circular scale to read the directional angle of the target; - Draw a vertical line through the observation point parallel to the grid lines on the circular scale; - Use the ruler to lay off the observation point-to-target range on the drawn line. Mark the target location with a dot and symbol; - Setting the circular scale to zero, read the target and observation point rectangular coordinates from the board. Write down the coordinates on the board or card; Plot the target on the map using the obtained rectangular coordinates. 21

24 Operation in adverse light conditions When using the rangefinder in insufficient light, set the illuminator switch 5 (Fig. 6) to ON. If a target is located against an intense background (bright sky, sun lit snow or sand, etc.), the rangefinder may confuse it with target and measurements may be inconsistent or rangefinder may detect more than one target. To compensate for the bright background attach diaphragm 22 (Fig. 2) to the objective lens and secure it on the case with a pin and a rubber clamp. Do not use the diaphragm at low temperature, in mist and limited visibility conditions. 22

25 9. RECHARGEABLE BATTERY HANDLING The rechargeable battery is supplied in discharged. While handling the battery, avoid contact with any bare circuit components and strictly comply with the prescribed charging/discharging procedure. NEVER: - Disassemble the battery; - Store the battery nearby the acids or batteries using acids. Charge the battery at ambient temperature of C. Standard charge: - Unscrew the battery cover on the charger; - Place the battery into the charger with "+" contact to the bottom, and screw the cover; - Connect the charger to the power source. - Place the charger switches to CHARGE and MAIN. The battery that was stored discharged for up to 28 days is to be charged for 15 hours. If the battery was stored discharged for a period between 28 days and 3 months, it should be cycled as follows: - Charge as described in Standard charge - Discharge the battery by setting the switches to the DISCHARGE and MAIN positions until the DISCHARGED light diode starts flashing. - Charge as described in Standard charge The battery that was stored discharged for over 3 months perform two charging cycles prior to use. 23

26 Cycle 1 - Charge for 24 hours with the charger switches set to the CHARGE and PREPARATORY; - Discharging the battery by setting the charger switches to DISCHARGE and PREPARATORY positions, until the LED labelled DISCHARGED starts flashing. Cycle 2 - Charge as described in Standard charge - Discharge the battery by setting the switches to the DISCHARGE and MAIN positions until the DISCHARGED light diode starts flashing. - Note the discharging time of Cycle 2 and charge the battery according to it: o If the discharging time is over 5 hours perform the Standard charge as described above, o If the discharging time is hours, subject the battery to another Cycle 2, then perform the Standard charge as described above, o If the discharging time is under 3.5 hours battery can not be used. 24

27 10. MAINTENANCE Main checks Test procedure 1. Rangefinder exterior Visual check 2. Optical surfaces Visual check Make sure the unit is off! 3. Dehydrator Visual check 4. Battery voltage Proceed as directed in 7.1 Technical requirement Exterior surfaces are clean and free from cracks, dents and deep rust. Optical surfaces are free from cracks, scratches, chips, dirt, grease stains (exterior) and condensed moisture (interior). Silica gel visible through dehydrator cover 13 (Fig. 7) is bluish. The red Low Battery indicator is not lit in the left eyepiece of the rangefinder. 5. Illumination of reticle Close objective lens with cap, switch illuminator selector to ON and look through the eyepiece. 6. Functioning of rangefinder Reticle is illuminated. Proceed as directed in 7.2. Range measurement accuracy is within 5 m. 7. Compass (angular mount) Proceed as directed in 7.4 All checks passed 8. Adjustment knobs (angular mount) Turn azimuth and elevation adjustment knobs Knobs are not loose 25

28 Maintenance general instructions This Section describes maintenance service for the rangefinder, except the battery service. For the instructions on the battery service procedure, refer to Section 9. During the maintenance service, observe the safety precautions as outlined in Section 6. While in use, the rangefinder is subject to the following types of maintenance services: - check inspection; - daily (routine) service; - in-service maintenance. The same service intervals are established for the parts and the entire rangefinder. Check inspection is carried out before using the rangefinder. Daily service is performed after each day of use. If the rangefinder is not used for a while, the daily service may be substituted by biweekly visual inspection of the dehydrator condition and, if is needed, replacement of the silica gel and the rechargeable battery. In-service maintenance is performed every six months and before placing the rangefinder in short-term storage. Check Inspection During the Check Inspection the serviceable condition of the rangefinder is checked as directed in Steps 1 through 6 described in 9.1. Additionally perform the following procedures: 26

29 Operations 1. Clean external optical surfaces (when required) 2.Charge the rechargeable battery when required Procedure as per Article Section 9 Materials, tools and accessories Lens Brush No. 7 (made of synthetic fibre) Absorbent optical cotton Alcohol Daily Service During the Daily Service, the rangefinder is checked for serviceable condition in accordance with Steps 1 through 7 described in 9.1. Additionally perform the following procedures: Operations 27 Procedure as per 1. Servicing within Check Inspection scope Cleaning rangefinder to remove dust, dirt and moisture 3. Retouching painted exterior of the rangefinder (when required) 4. Drying and repair the straps (when required) 5. Replacing silica gel (when required) Materials, tools and accessories Cloth Brush, painting enamel 6. Replacing defective components with 11.5, Silica gel spares from the SPTA set 12 SPTA set 7. Tightening knob screws 9.1 Screwdriver In-service Maintenance During in-service maintenance rangefinder is checked in accordance with 9.1. During in-service maintenance, the cycle life of rangefinder may not be shortened by more than 10 measurements.

30 Cleaning contacts To clean the contacts in the battery section, wipe the contacts several times with cotton wool moistened with alcohol. Cleaning optical surfaces To remove dust and dirt from the optical surfaces, use the brush 23 and clean cloth 7 supplied in SPTA set (Fig. 2). To remove greasy stains from optical surfaces, do the following: - wind some cotton wool around one end a wooden stick; - moisten the cotton wool with an alcohol and ether mixture (1:1) and gently shake the stick to remove excess mixture; - wipe the glass surface several times with the cotton wool, avoiding contact with the frame; - change the cotton wool and wipe the surface clean moving by spiral from the centre to the edge; While cleaning ensure that the mixture does not touch the lens frame, for it may dissolve the lens sealing causing leakage. Changing silica gel The dehydrator case should be filled with fresh silica gel in a closed room. In field conditions, replace the silica gel when the weather is dry and calm. Never keep the case with fresh silica gel open for more than 1-2 minutes. To change the silica gel, proceed as follows: - prepare fresh silica gel 13 (Fig. 2); - unscrew the cover of the dehydrator case with the help of wrench 9 (Fig. 2); - remove the moist silica gel from the case and fill the case with the fresh one. Moist silica gel may be subjected to multiple dehydrations at (120±3) C without any deterioration of its properties. Using a microwave oven is allowed. To dehydrate the silica gel, proceed as follows: 28

31 - place the silica gel in a clean metal vessel; - heat the vessel up to (120±3) C until it turns blue. Measure the temperature directly on the silica gel. When heating, keep the silica gel away from open fire. 29

32 11. TROUBLESHOOTING If the rangefinder or its components do not function properly, first of all check that: - rangefinder is properly set up; - controls have been operated in the proper succession; - optical parts are free from dust, dirt and oil stains on the exterior; - battery is charged. The possible problems with the rangefinder are listed below: Problem description Probable reason Solution 1. Picture is blurred in the right-hand eyepiece Condensed moisture, dirt on external optical surfaces. Condensed moisture on internal optical surfaces Clean exterior of optical parts as directed in 11.5 Change silica gel as described in Readiness indicator remains dark after MEASURE 1 (MEASURE L) button release 3. Red Low Battery indicator is on Open circuit in the battery section (when standard battery is used) Blown fuse in the power supply (when vehicle electrical system is used) Low battery voltage Clean contacts as directed under 11.5 Replace fuse as directed below. Replace the battery with a newly charged one as directed in 9. To correct problems by using the SPTA set proceed as follows: To replace the fuse link in the power supply: - Unscrew the threaded cover from the housing of the power supply; - Remove the defective fuse link; - Insert the spare fuse link 2 (Fig.6) from the SPTA set; - Screw the cover on the housing of the power supply. 30

33 To replace the rechargeable battery: - Open the cover of the battery section; - Remove the discharged battery; - Insert the newly charged battery into the section so that the "+" terminal of the battery is connected with the bottom contact of the section; - Close the cover of the battery section. To replace the fuse links in the charger: - Unscrew the outer threaded covers from the fuses; - Unscrew the bayonet of the fuse link holders; - Remove the fuse links; - Fit in good fuse links; - Close the holder covers; - Screw on the outer threaded covers. The SPTA set includes the following tools and accessories: - charger 11, operated to charge the rechargeable battery from a vehicle electrical system (27±2.7) V DC or V and from a commercial line 220V 50 Hz; - power supply 12, used to supply the rangefinder with (27±2.7) V DC or V from a vehicle electrical system, or with 22-29V or V from external batteries; - cable 14, used to couple the power supply to the electrical system of a track-laying vehicle; - cable 15, used to connect the power supply to external rechargeable battery type 6CT70 (or analogous); - cable 16, used to connect the power supply or charger to the electrical system of a wheeled truck; - cable 17, used to couple the charger to a mains of 220V 50 Hz; - cable 18, used to couple the power supply to external battery type 21NКBN-3,5; 31

34 - pencil 3 and eraser 8, used while working with the map and coordinate converter; - coordinate converter 10, used for polar-to-rectangular coordinate conversion, reference location of the observation post and orientation of the rangefinder; - O-ring 4, used to seal battery section; - eye shield 5, used to exclude incident light in the eyepiece; - framed lens 6, used to contribute the angle reading convenience and accuracy when operating the AI; - membrane 19 to seal the MEASURE button assembly; - cover 20, to protect the rangefinder against direct sun rays; - cover 21, used to protect the rechargeable battery against damages. The SPTA set is packed in the case 4 (Fig. 1). The case also contains the spare rechargeable battery, pencil, eraser, cloth and coordinate converter. 32

35 12. STORAGE AND SHIPMENT Preparation to long term storage To preserve the rangefinder, proceed as follows: - cap the rangefinder connectors by paper and tie a cord round; - coat the rangefinder bright work with protective grease; - pack up all rangefinder components in metallic package; - secure all locks and hinges of package and with protective grease; - pack up the tripod in recess on package cover and fasten by belt; insert rangefinder unit into polyethylene bag; - insert the sack with silica gel into the bag and weld it. Storage conditions The rangefinder is stored in closed rooms specially equipped to provide weather protection, i.e. protection against atmospheric precipitation, sunlight, dust, sand, wind, sharp temperature changes and outside air humidity. The storage room temperature is to be maintained between 40 C and +50 C and relative humidity of up to 98% taken at 35 C. Avoid moisture condensation in the premises. Each rangefinder in wooden package is kept on a wooden rack or shelf with handle up. NEVER store the rangefinder on the floor near heaters. The rangefinders are arranged in the storage room so that steel and iron objects are at least 2 m away. To prevent demagnetizing of the needle, the latter should be aligned with the magnetic meridian. To achieve that, store the packing cases so that the arrow marked on top points to the North. Charged batteries may be stored together with the rangefinder unit for up to three months. The rangefinder placed in short-term storage (up to 3 months) is subject to inspection as directed in 9.1 and Long Term Storage as directed in

36 If the rangefinder is to be stored for over three months, discharge the batteries as directed in Section 9. Shipment The rangefinder unit is to be shipped in wooden package AEP The rangefinder can be shipped by any transport means. During shipping, it must be protected against precipitation, mist and direct sunlight. Before transit, the rangefinder must be closed down and all its components are secured in the metal box AEP (Fig. 1). All locks and hinges of package and case are to be secured. 34

37 13. WARRANTY NEWCON warrants this product against defects in material and workmanship for one year from the date of the original purchase. Longer warranty is available, subject to the terms of the specific sales contract. Should your Newcon product prove to be defective during this period, please deliver the product securely packaged in its original container or an equivalent, along with the proof of the original purchase date to your Newcon Dealer. Newcon will repair (or at its option replace with the same or comparable model), the product or part thereof, which, on inspection by Newcon, is found to be defective in materials or workmanship. What This Warranty Does Not Cover: NEWCON is not responsible for warranty service should the product fail as a result of improper maintenance, misuse, abuse, improper installation, neglect, damage caused by disasters such as fire, flooding, lightning, improper power supply, or service other than by a NEWCON Authorized Service. Postage, insurance, and shipping costs incurred while presenting your NEWCON product for warranty service are your responsibility. 35

38 14. CUSTOMER SUPPORT Should you experience any difficulties with your NEWCON OPTIK product, consult the enclosed manual. If the problem remains unresolved, contact our customer support department at (416) or toll free at Our operating hours are 9am-5pm, Monday - Friday, Eastern Standard Time. At no time should equipment be sent back to Newcon without following the instructions of our technical support department. NEWCON OPTIK accepts no responsibility for unauthorized returns. To locate NEWCON Authorized Dealer call: Tel: (416) Fax: (416) newconsales@newcon-optik.com Web: The defective products should be shipped to: US Customers: 2498 Superior Ave. Cleveland, OH From all other countries: 105 Sparks Ave., Toronto, ON M2H 2S5, CANADA 36

39 15. ACCEPTANCE CERTIFICATE Rangefinder serial number The LASER RANGEFINDER LRB20000C conforms to the technical requirements and is suited for usage. Quality Inspector signature Purchase date Quality Assurance Seal 37

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42 R1.S 5.11 NEWCON OPTIK Printed in Canada