83:I[196793,["$1","$2","$3","$4","$5","$6","$7","$8","$9","$a","$b","$c","$d","$e","$f","$10","$11","$12","$13","$38","$39","$3a","$3b","$3c","$3d","$3e","$3f","$40","$41","$42","$43","$44","$45","$46","$47","$4e","$4f","$50","$51","$52","$53","$54","$55","$56","$57","$58","$59","$5a","$5b","$5c","$5d","$5e","$5f","$60","$61","$62","$63","$64","$65","$66","$67","$68","$69"],"Gingerbread"] 85:"RecordResourceResume" 86:I[647935,["$1","$2","$3","$4","$5","$6","$7","$8","$9","$a","$b","$c","$d","$e","$f","$10","$11","$12","$13","$38","$39","$3a","$3b","$3c","$3d","$3e","$3f","$40","$41","$42","$43","$44","$45","$46","$47","$4e","$4f","$50","$51","$52","$53","$54","$55","$56","$57","$58","$59","$5a","$5b","$5c","$5d","$5e","$5f","$60","$61","$62","$63","$64","$65","$66","$67","$68","$69"],"$85"] 87:I[473028,["$1","$2","$3","$4","$5","$6","$7","$8","$9","$a","$b","$c","$d","$e","$f","$10","$11","$12","$13","$38","$39","$3a","$3b","$3c","$3d","$3e","$3f","$40","$41","$42","$43","$44","$45","$46","$47","$4e","$4f","$50","$51","$52","$53","$54","$55","$56","$57","$58","$59","$5a","$5b","$5c","$5d","$5e","$5f","$60","$61","$62","$63","$64","$65","$66","$67","$68","$69"],"RecordTopicView"] 88:"FlashcardAccessBranch" 89:I[830476,["$1","$2","$3","$4","$5","$6","$7","$8","$9","$a","$b","$c","$d","$e","$f","$10","$11","$12","$13","$38","$39","$3a","$3b","$3c","$3d","$3e","$3f","$40","$41","$42","$43","$44","$45","$46","$47","$4e","$4f","$50","$51","$52","$53","$54","$55","$56","$57","$58","$59","$5a","$5b","$5c","$5d","$5e","$5f","$60","$61","$62","$63","$64","$65","$66","$67","$68","$69"],"$88"] 8a:"TopicFlashcardRunner" 8b:I[315438,["$1","$2","$3","$4","$5","$6","$7","$8","$9","$a","$b","$c","$d","$e","$f","$10","$11","$12","$13","$38","$39","$3a","$3b","$3c","$3d","$3e","$3f","$40","$41","$42","$43","$44","$45","$46","$47","$4e","$4f","$50","$51","$52","$53","$54","$55","$56","$57","$58","$59","$5a","$5b","$5c","$5d","$5e","$5f","$60","$61","$62","$63","$64","$65","$66","$67","$68","$69"],"$8a"] 8c:Tcd7,108. It is not possible to recharge all the batteries at the same 时间 as they reach the empty states at different times. Charging is managed by different regulators. The complete recharging time from empty is about 2-3 hours. The maximum continuous time for continuous scanning operation is about 8 hours. The main rechargeable battery must only be charged using the supplied mains adaptor and recharging base. It takes approximately 4 hours to recharge the battery. Charging must be carried out in a well-ventilated indoor environment. The laser system may not be used while charging. Charging should not be attempted unless the ambient temperature is between 5°C and 40°C (41°F and 104°F). Charging outside this range could damage the battery pack and result in it overheating. The battery cannot be charged via the integrated USB port. The LPM-100 scanner uses a Class 2 Laser device. Avoid direct exposure to the eye at any time. Do not stare directly into the laser beam. Do not point the laser beam directly at people or animals. Looking directly at the laser with optical instruments can lead to eye injury. Use the supplied carrying case and straps when taking the instrument to a new job site. Take care whenever transporting and using the laser scanner. The laser scanner should only be operated and maintained by qualified and trained personnel. Only original Linnemann-Schnetzer accessories and spare parts should be used to prevent damage to the instrument. Opening the housing of the unit without authority will void the warranty. Users should consult their distributor for adjustments and repairs. Avoid dropping the scanner or subjecting it to heavy impacts, as this may misalign the internal optics or calibration. Ensure the scanner is securely mounted on its tripod during operation. To ensure correct results, perform check measurements periodically under working conditions. A regular service inspection of the instrument at an authorized service centre once a year is highly recommended. Follow safety guidelines given in the Instruction Manual (including Battery safety and Hazardous Substances regulations) at all times. Keep this User Manual in a safe place. Keep out of the reach of children. For the LPM-100, the laser wavelength is 635nm, output is < 1mW, and the product conforms to the standard EN/IEC 60825-1:2014. The scanner is capable of operating at temperatures between -10°C and +45°C. The protection level of the case and scanner is IP54. The range of measurement is from 0.05m up to 100m with a scanning accuracy of +/- 3mm within 10m. Vertical scan range is -25° to +90°, and Horizontal scan range is 0° to 360°. Standard operating current and voltage are 12VDC, 2A max. Battery capacity is 5200mAh. Operating frequency and Bluetooth range parameters should be strictly followed.6d:[["$","$L83",null,{"feature":"flashcards"}],"$L84",["$","$L86",null,{"href":"/igcse/maths/edexcel/grade-8-9-8-7-sequences-higher/flashcards","label":"Sequences (Higher)","subjectCode":"igcse_maths","surface":"flashcards"}],["$","$L87",null,{"kind":"flashcards","topicId":"f2bc75fa-764f-4dcd-ac4f-c2da28bb16e8"}],["$","$L89",null,{"runner":["$","div",null,{"className":"min-h-0 flex-1 overflow-hidden bg-background","children":["$","$L8b",null,{"decks":[{"id":"bd9e49b5-cc04-4a0f-9377-e29e6063558c","title":"Sequences (Higher) Flashcards","topicId":"f2bc75fa-764f-4dcd-ac4f-c2da28bb16e8","topicSlug":"grade-8-9-8-7-sequences-higher","cards":[{"id":"57846f63-3307-4e72-a32b-25bd3b60681e","cardType":"basic","points":1,"front":"What does $T_n$ represent in a sequence?","back":"The term in position $n$.","mcqOptions":[{"text":"The term in position $n$.","correct":true,"explanation":"$$T_n$ denotes the term whose position in the sequence is $n$, so it identifies the value found at that particular position."},{"text":"The term in position $n+1$.","correct":false,"explanation":"This confuses the position with the next position in the sequence. $T_n$ means the term in position $n$, whereas $T_{n+1}$ is the following term."},{"text":"The sum of the first $n$ terms.","correct":false,"explanation":"This is the meaning of $S_n$, not $T_n$. The notation $T_n$ refers to one term at position $n$, while $S_n$ represents a sum."},{"text":"The difference between consecutive terms.","correct":false,"explanation":"A difference between consecutive terms describes a common difference or first difference, not $T_n$. $T_n$ specifically represents the term in position $n$."}]},{"id":"f656dd08-e6da-4a29-a5a7-c9077f64324f","cardType":"basic","points":1,"front":"What does $S_n$ represent in a sequence?","back":"The sum of the first $n$ terms.","mcqOptions":[{"text":"The sum of the first $n$ terms.","correct":true,"explanation":"$$S_n$ represents the sum of the first $n$ terms of a sequence, found by adding every term from the first through to term $n$."},{"text":"The term in position $n$.","correct":false,"explanation":"This is the meaning of $T_n$, not $S_n$. The letter $S$ indicates a sum, so $S_n$ is the total of the first $n$ terms."},{"text":"The product of the first $n$ terms.","correct":false,"explanation":"$$S_n$ uses addition rather than multiplication. The product of terms would require a different notation, while $S_n$ means the sum of the first $n$ terms."},{"text":"The difference between the first and $n$th terms.","correct":false,"explanation":"Subtracting terms gives a difference, not $S_n$. The notation $S_n$ refers to adding all the terms from position 1 to position $n$."}]},{"id":"51ee4d8a-d236-4c69-80cb-9df250f2d6f3","cardType":"basic","points":1,"front":"$8c","back":"OK","mcqOptions":[{"text":"OK","correct":true,"explanation":"The supplied answer for this card is OK. Although the front contains unrelated scanner-manual text rather than a clear sequence question, OK is the specified correct response."},{"text":"Not OK","correct":false,"explanation":"Not OK contradicts the supplied answer. The answer key gives OK, so this alternative is wrong even though the front text does not form a meaningful sequence question."},{"text":"Pending","correct":false,"explanation":"Pending is not the supplied response for this card. The answer key states OK; the unusually unrelated front appears to be an accidental data entry."},{"text":"Unknown","correct":false,"explanation":"Unknown is not the keyed answer. The supplied back is OK, and the scanner-manual passage in the front does not provide a basis for changing that answer."}]},{"id":"99062528-68ea-479f-9ecc-04105b7eb0dc","cardType":"basic","points":1,"front":"What is the laser classification of the LPM-100 scanner?","back":"Class 2 Laser","mcqOptions":[{"text":"Class 2 Laser","correct":true,"explanation":"The LPM-100 is identified as a Class 2 Laser device. This classification is stated directly in the supplied safety information for the scanner."},{"text":"Class 1 Laser","correct":false,"explanation":"Class 1 is a lower laser classification and is not the one specified for this scanner. The LPM-100 is classified as a Class 2 Laser device."},{"text":"Class 3R Laser","correct":false,"explanation":"Class 3R is a more hazardous classification than the scanner’s stated rating. The supplied specification identifies the LPM-100 as a Class 2 Laser."},{"text":"Class 4 Laser","correct":false,"explanation":"Class 4 represents a much higher hazard level and is not specified here. The LPM-100 is a Class 2 Laser device, requiring avoidance of direct eye exposure."}]},{"id":"0710b8f2-89bc-40fb-ae7f-63a1eb4ea026","cardType":"basic","points":1,"front":"What is the operating temperature range for the LPM-100 scanner?","back":"-10°C to +45°C","mcqOptions":[{"text":"-10°C to +45°C","correct":true,"explanation":"The scanner’s operating temperature range extends from -10°C to +45°C, inclusive of the stated lower and upper limits."},{"text":"-5°C to +40°C","correct":false,"explanation":"These limits may be confused with the recommended battery-charging range, but they are not the scanner’s operating range. Operation is specified from -10°C to +45°C."},{"text":"-20°C to +50°C","correct":false,"explanation":"Both limits extend beyond the stated specification. The LPM-100 is designed to operate from -10°C to +45°C, not across this wider temperature range."},{"text":"0°C to +45°C","correct":false,"explanation":"This incorrectly raises the lower limit to 0°C. The scanner can operate down to -10°C, giving the full range -10°C to +45°C."}]},{"id":"dfad5b41-dcbb-4905-b9d9-50e4fd264c0a","cardType":"basic","points":1,"front":"What is the protection level of the LPM-100 case and scanner?","back":"IP54","mcqOptions":[{"text":"IP54","correct":true,"explanation":"The protection level of both the LPM-100 case and scanner is specified as IP54, indicating the stated protection rating for the equipment."},{"text":"IP44","correct":false,"explanation":"IP44 is a plausible nearby rating but does not match the specification. The stated protection level for the case and scanner is IP54."},{"text":"IP55","correct":false,"explanation":"The final digit has been increased from 4 to 5, incorrectly suggesting greater water protection. The specified rating is IP54."},{"text":"IP65","correct":false,"explanation":"IP65 changes both the solid-particle and water-protection ratings from those given. The LPM-100 case and scanner are rated IP54."}]},{"id":"909401e5-92c5-4b3d-9fed-f6e8662f52ab","cardType":"basic","points":1,"front":"What is the maximum measurement range for the LPM-100?","back":"100 meters","mcqOptions":[{"text":"100 meters","correct":true,"explanation":"The measurement range is stated as 0.05 m up to 100 m, so the maximum measurement range is 100 meters."},{"text":"10 meters","correct":false,"explanation":"10 meters is the distance used when stating the scanning-accuracy specification, not the maximum range. The scanner can measure up to 100 meters."},{"text":"50 meters","correct":false,"explanation":"50 meters is a possible mid-range value but is not the stated upper limit. The LPM-100’s measurement range extends to 100 meters."},{"text":"150 meters","correct":false,"explanation":"This exceeds the scanner’s specified capability. Its measurement range ends at 100 meters, so 150 meters is an overestimate."}]},{"id":"93dbb69b-d18d-4077-9f99-dd268c43d3f9","cardType":"basic","points":1,"front":"What is the scanning accuracy within 10 meters for the LPM-100?","back":"+/- 3mm","mcqOptions":[{"text":"+/- 3mm","correct":true,"explanation":"Within 10 meters, the LPM-100 has a stated scanning accuracy of +/- 3mm, meaning the measured value may differ by up to 3 millimetres."},{"text":"+/- 1mm","correct":false,"explanation":"This is more precise than the stated specification and may result from confusing the accuracy with a smaller tolerance. The correct scanning accuracy is +/- 3mm."},{"text":"+/- 5mm","correct":false,"explanation":"This gives a larger tolerance than the specified value. Within 10 meters, the scanner’s scanning accuracy is +/- 3mm."},{"text":"+/- 3cm","correct":false,"explanation":"The numerical value is similar, but the unit is ten times larger because 3cm equals 30mm. The stated accuracy is +/- 3mm."}]},{"id":"2f0939b9-c220-49ae-9363-72a80f5b21d8","cardType":"basic","points":1,"front":"What are the horizontal and vertical scanning ranges for the LPM-100?","back":"Vertical: -25° to +90°; Horizontal: 0° to 360°","mcqOptions":[{"text":"Vertical: -25° to +90°; Horizontal: 0° to 360°","correct":true,"explanation":"The LPM-100 scans vertically from -25° to +90° and can complete a full horizontal rotation from 0° to 360°."},{"text":"Vertical: 0° to +90°; Horizontal: 0° to 180°","correct":false,"explanation":"This overlooks the scanner’s negative vertical movement and halves its horizontal range. The correct ranges are -25° to +90° vertically and 0° to 360° horizontally."},{"text":"Vertical: -90° to +90°; Horizontal: 0° to 360°","correct":false,"explanation":"The horizontal range is correct, but the scanner cannot reach -90° vertically. Its vertical range begins at -25° and extends to +90°."},{"text":"Vertical: -25° to +90°; Horizontal: 0° to 270°","correct":false,"explanation":"The vertical range is correct, but 270° understates the horizontal coverage. The LPM-100 rotates through a complete horizontal range of 0° to 360°."}]},{"id":"a8ae2935-cde9-4163-a712-22352cd414bb","cardType":"basic","points":1,"front":"Is it possible to recharge the LPM-100 internal battery via the integrated USB port?","back":"No, the battery cannot be recharged via the USB port.","mcqOptions":[{"text":"No, the battery cannot be recharged via the USB port.","correct":true,"explanation":"The integrated USB port does not provide a battery-charging function, so the LPM-100’s internal battery cannot be recharged through that connection."},{"text":"Yes, the battery can be fully recharged via the USB port.","correct":false,"explanation":"USB connectivity may suggest charging capability, but the integrated port does not recharge the internal battery. The correct answer is that USB recharging is not possible."},{"text":"Yes, the battery can be partially recharged via the USB port.","correct":false,"explanation":"The USB port does not offer either partial or full battery charging. The LPM-100’s internal battery cannot be recharged through the integrated USB port."},{"text":"No, the battery can only be recharged via the USB port.","correct":false,"explanation":"This contradicts itself by assigning an exclusive charging role to USB. In fact, the integrated USB port cannot be used to recharge the internal battery at all."}]},{"id":"15cb3949-ec5c-49e5-a7e0-38569480f286","cardType":"basic","points":1,"front":"How long is the estimated battery operating time for the LPM-100?","back":"About 8 hours of continuous scanning.","mcqOptions":[{"text":"About 8 hours of continuous scanning.","correct":true,"explanation":"The estimated operating time of the LPM-100’s battery is approximately eight hours when the device is being used for continuous scanning."},{"text":"About 4 hours of continuous scanning.","correct":false,"explanation":"Four hours incorrectly halves the stated operating estimate. The LPM-100 is expected to provide about eight hours of continuous scanning on its battery."},{"text":"About 12 hours of continuous scanning.","correct":false,"explanation":"Twelve hours overestimates the battery’s expected endurance by four hours. The specified estimate is about eight hours of continuous scanning."},{"text":"About 16 hours of continuous scanning.","correct":false,"explanation":"Sixteen hours incorrectly doubles the estimated operating time. The LPM-100’s battery provides about eight hours of continuous scanning rather than sixteen."}]},{"id":"6243a4a5-f3d7-4fdb-91c3-0f37f287b577","cardType":"basic","points":1,"front":"What is the recommended frequency for professional service inspections?","back":"Once a year.","mcqOptions":[{"text":"Once a year.","correct":true,"explanation":"Professional service inspections are recommended annually, meaning the LPM-100 should receive one such inspection during each year of operation."},{"text":"Once a month.","correct":false,"explanation":"A monthly professional inspection is much more frequent than recommended. The specified service interval is once a year, not once every month."},{"text":"Once every two years.","correct":false,"explanation":"A two-year interval leaves twice as long between professional inspections as recommended. The LPM-100 should be professionally inspected once a year."},{"text":"Only after a fault.","correct":false,"explanation":"Waiting for a fault confuses preventative servicing with reactive repair. Professional inspections should be scheduled once a year, even when no fault is apparent."}]},{"id":"e557ec68-38ca-4899-9d96-a02661fff9c3","cardType":"basic","points":1,"front":"Why is it important to avoid dropping the scanner?","back":"It could misalign the internal optics or calibration.","mcqOptions":[{"text":"It could misalign the internal optics or calibration.","correct":true,"explanation":"A drop can disturb precisely positioned optical components or alter the scanner’s calibration, reducing the reliability and accuracy of subsequent measurements."},{"text":"It could permanently increase the horizontal scanning range.","correct":false,"explanation":"Dropping the scanner cannot beneficially expand its designed scanning range. The real risk is misalignment of the internal optics or damage to its calibration."},{"text":"It could automatically erase all stored scanning data.","correct":false,"explanation":"Data erasure is not the stated mechanical risk associated with dropping the device. The impact could instead misalign its internal optics or calibration."},{"text":"It could improve the accuracy of the internal calibration.","correct":false,"explanation":"Physical impact does not improve calibration and is likely to make measurements less reliable. Dropping the scanner could misalign its internal optics or calibration."}]}]}],"examCountdown":{"examDate":"2027-05-14","paperLabel":"Paper 1"},"heading":"Sequences (Higher)","title":"Sequences (Higher) Flashcards","topbar":{"backHref":"/igcse/maths/edexcel/flashcards"},"topicSidebar":"$L8d"}]}],"topicId":"f2bc75fa-764f-4dcd-ac4f-c2da28bb16e8","walled":"$L8e"}],"$L8f","$L90"]