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Page 24 - Laser Technology, Inc. LTI 20/20 TruSpeed Metric User’s Manual 3rd Edition

Copyright (c)[2013] Laser Technology, Inc. All rights reserved. Unauthorized duplication, in whole or in part, is strictly prohibited

In this mode, the TruSpeed will continue to attempt to lock onto the target as

long as the TRIGGER remains pressed. The unit will also continually try to acquire

a speed measurement in this mode. Consequently, it is very important that the

aiming point on the target remain constant for the entire measurement time. If

you move the instrument off the aiming point, the last good measurement will be

displayed in the scope for 1 second and the repeating single low-pitched beep will

sound indicating the instrument is trying to re-establish target lock.

After you release the TRIGGER the

instrument will display the last good

speed measurement and capture

distance.The LCD will look similar

to Figure #21.

Effects of a Strong Light Source

The LTI 20/20 TruSpeed contains advanced circuitry and algorithms

that allow the instrument to determine if a laser jammer is being used.

The JAM tone

indicates that the instrument is being flooded

by a light source. There are two possible situations:

•

You are targeting a strong light source such as sunlight or

xenon headlights.

-or-

•

A targeted vehicle is employing a laser jammer.

Regardless of the level of interference, you will never get an erroneous speed

reading.

•

At a low level of interference, you will hear the jam tone and a speed

may be captured or an E03 error code may be displayed.

•

At a high level of interference, you will hear the jam tone and an E07

error code will be displayed.

Optional Jam Detect Feature

The LTI 20/20 TruSpeed contains advanced circuitry and algorithms that allow the

instrument to determine if a laser jammer is being used. The JAM tone

indicates that the instrument is being flooded by a light source. There are two

possible situations:



Your TruSpeed may not include the Optional Jam Detect feature.

It is a factory-defined option that is set when the instrument is shipped.

The TruSpeed includes hardware-based laser jammer detection. Jam

Detect is an integrated software feature that provides, (1) Jammer Defeat,

(2) Jammer Detection, and then (3) emits the jam tone to alert the user.

Figure #21

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Содержание LTI 20/20 TruSpeed

Страница 1: ...Laser Technology Inc LTI 20 20 TruSpeed Metric User s Manual LTI 2013 TruSpeed 0144809 ...

Страница 2: ... written consent of Laser Technology Inc Copyright c 2008 2013 Laser Technology Inc All Rights Reserved Unauthorized duplication in whole or in part is strictly prohibited Printed in the United States of America 3rd Edition October 2013 Trademarks TruSpeed is trademark of Laser Technology Inc All other trademarks are the property of their respective owner Patents This product is covered by pending...

Страница 3: ...tteries in Battery Tube 8 Removing the Batteries from the Battery Tube 9 Re inserting the Battery Tube into the Handle 9 Battery Voltage Level 10 Powering ON the TruSpeed 11 Powering OFF the TruSpeed 11 Understanding the Display Indicators 12 Miscellaneous Display Features 13 Adjusting the Aiming Reticle s Intensity 14 Restoring Factory Default Settings 14 Listening to the TruSpeed 15 Understandin...

Страница 4: ... Distance Test 30 Instrument Self Test 32 Optional Local Speed Limit Edit 33 Model and Firmware Version Number Display 34 Serial Number Display 34 Section 4 Maintenance 35 Section 5 Serial Data Interface 36 Data Format 36 Format Parameters 36 Download Instructions 36 Remote Trigger 36 Requests 37 Firmware Version ID Request 37 Example Version ID Messages 37 Serial Number Request 37 Example Version...

Страница 5: ...rd is associated with directly viewing the laser output under normal conditions As with any laser device reasonable precautions should be taken in its operation It is recommended that you avoid staring into the transmit lens while firing the laser The use of optical instruments with this product may increase eye hazard Never attempt to view the sun through the scope Looking at sun through the scop...

Страница 6: ...ity to capture a speed reading Continuous Mode an alternate speed measurement mode It displays one speed reading after another until you release the TRIGGER Liquid Crystal Display LCD screen for instant access to measurements and options Sighting scope with in scope aiming reticle and in scope speed measurement display Seven button keypad that provides quick and easy access to the instrument funct...

Страница 7: ...mental conditions The absolute maximum is about 650 meters Long Range optional feature absolute maximum is about 1 200 meters LCD Screen The LCD Screen displays menu items option indicators error codes and speed measurement results Serial Port Your TruSpeed includes a serial port located on the rear panel The serial port allows you to connect the instrument to a data collector or remote computer F...

Страница 8: ...implified gating option Targets must be at a distance greater than 61 meters Speed Limit Edit Function Adds 1 to the value of the flashing digit Continuous Mode Activates an alternate speed measurement mode allows you to obtain successive speed readings on a target vehicle Speed Limit Edit Function 1 Activates the edit function The right most digit will be flashing 2 Press to edit the digit to the...

Страница 9: ...Shoulder Stock 1 Flip the Shoulder Stock Release toward the front of the TruSpeed 2 Align the pronged end of the Shoulder Stock with the Shoulder Stock Attachment Point as shown in Figure 4 3 Slide the Shoulder Stock straight into the two holes 4 Flip the Shoulder Stock Release toward the rear of the TruSpeed to secure the Shoulder Stock Removing the Shoulder Stock 1 Turn the Shoulder Stock Releas...

Страница 10: ...ped like Figure 6A will void the warranty any pursuant damage caused to the transistor and main power supply chip will not be handled as a warranty repair Removing the Battery Tube from the Handle 1 Hold the TruSpeed with one hand and hold the bottom of the Handle with your other hand 2 Press the Battery Release the black button on both sides of the TruSpeed just behind the TRIGGER 3 Slide the Bat...

Страница 11: ...The Battery Compartment is designed to the Battery Tube only fits one way 1 Align the notched edges of the Battery Tube with those of the Battery Compartment 2 Slide the tube into the compartment until it locks into place If you decide to assume the risk of using batteries shaped like Figure 6A page 8 it is critical to follow the recommended orientation of the and ends when inserting the batteries...

Страница 12: ...imated battery life is between 67 and 100 2 segments are lit and the display is steady The estimated battery life is between 34 and 66 1 segment is lit and the display is flashing The estimated battery life is between 33 and 11 Only the outline is lit no segments are lit and the display is steady The estimated battery life is approximately 10 and the instrument is still operating normally You shou...

Страница 13: ...page 17 If all tests do not prove positive the appropriate error code will appear in the upper display page 16 Powering OFF the TruSpeed 1 Press and hold the button for approximately 3 seconds If the instrument fails the Self Test 1 Press the button to power OFF the TruSpeed 2 Press the button to once again power ON the TruSpeed and repeat the Self Test If the error repeats and you need assistance...

Страница 14: ...tion Explanation Display Backlight Visible The LED backlight is ON Not Visible The LED backlight is OFF Upper Display Provides access to speed measurements and messages Speed Units MPH Miles per Hour km h Kilometers per Hour Test Mode The instrument s Test Mode is active page 26 Continuous Mode The instrument s Continuous Mode is active page 23 Weather Mode The instrument s Weather Mode is active ...

Страница 15: ...tings have been restored Appears in the upper and lower displays 14 E xx Error Code An error condition has occurred during a speed measurement attempt or in the system hardware Appears in the upper display 16 PASS Successful completion of the instrument Self Test Appears in the upper display 32 SELF The instrument is performing or has performed the instrument Self Test Appears in the lower display...

Страница 16: ...g if you look through the scope while making the adjustment Each time you press the button the br xx value increases by 1 If you press the button while br 08 is displayed you will see br 01 next 3 Press the TRIGGER to return to the measurement mode that was most recently active Restoring Factory Default Settings 1 Verify that the TruSpeed is powered ON 2 Simultaneously press and hold the button an...

Страница 17: ...he intended speed measurement due to an error An error code will be displayed to the indicate the nature of the error page 16 High Pitched Triple Beep The laser s return sensor detected interference from a light source such as a xenon headlight or laser jammer device The speed reading is valid High Pitched Oscillating Ring Jam tone The instrument s laser return sensor is being overwhelmed by inter...

Страница 18: ... Error Low level of interference from a light source such as a xenon headlight Jam Detect High level of interference from a light source such as a xenon headlight E 52 Temperature too cold Stop operation E 53 Temperature too hot Stop operation E 54 Low Battery E 55 E57 E 56 E58 Calibration Errors Please turn OFF unit and try again If the same error is continuously repeated please contact LTI E 59 ...

Страница 19: ...ge 32 for more information about the Self Test The next screen is automatically displayed and should look similar to Figure 15 The dashes that appear in the upper display indicate where the speed measurement will appear km h means the speed will be measured in kilometers per hour The dashes that appear in the lower display indicate where the distance to the target vehicle will appear m means the d...

Страница 20: ...g to lock onto the target 1 Low Pitched and 2 High Pitched Beeps mean that a measurement error occurred An error code will be displayed page 16 A high pitched single beep means that a speed was captured The measured speed will be displayed on the LCD screen and will be projected in the scope just below the aiming reticle After you release the TRIGGER the instrument will display the most recent spe...

Страница 21: ...el When the angle is significant the measured speed is less than the target s true speed The phenomenon is known as the cosine effect Cosine is the trigonometric function that relates to this phenomenon The difference between the measured speed and the true speed depends upon the angle between the instrument s ideal position the position where targets would be moving in direct line with the instru...

Страница 22: ...The crosshatch indicates impractical angles i e distance off the road is greater than range to the target The diagonal created by the boldface numbers indicates the boundary between acceptable and unacceptable parameters Numbers above the diagonal are acceptable margins of error Numbers below the diagonal are unacceptable margins of error Remember that the cosine effect is always in the motorist s...

Страница 23: ...le While the instrument is attempting to lock onto the target as long as the TRIGGER is kept pressed it will retry the speed measurement In this mode the instrument will attempt to lock onto the target for up to 3 5 seconds Information is accumulated until it gets a good measurement or generates an error code Consequently it is very important that the aiming point on the target remain constant for...

Страница 24: ...e as when the Speed Mode is active and the Weather Mode is not active To activate the Weather Mode 1 Ensure that the TruSpeed is powered ON and that the Speed Mode is active 2 Press the button The display should look similar to Figure 18 3 Use the aiming reticle to aim the instrument at the target vehicle s license plate area and press the TRIGGER 4 Continue to press the TRIGGER and keep the instr...

Страница 25: ...t is displayed When the Continuous Mode is active The Continuous Mode indicator appears in the middle left side of the LCD Screen For the best results do not try to use Continuous Mode to target one vehicle after another When you wish to change targets release the trigger aim to the new target and retrigger To activate the Continuous Mode 1 Ensure that the TruSpeed is powered ON and that the Speed...

Страница 26: ... determine if a laser jammer is being used The JAM tone page 15 indicates that the instrument is being flooded by a light source There are two possible situations You are targeting a strong light source such as sunlight or xenon headlights or A targeted vehicle is employing a laser jammer Regardless of the level of interference you will never get an erroneous speed reading At a low level of interf...

Страница 27: ...de may be displayed At a high level of interference you will hear the jam tone and an E07 error code will be displayed Optional Local Speed Limit Edit The Local Speed Limit Edit feature allows you to enter the local speed limit into the TruSpeed For information about entering the local speed limit see page 33 Once you have entered the local speed limit SPdLt will appear in the lower display on the...

Страница 28: ...lows you to verify that all display segments are operating LTI suggests that you do this test periodically 1 Ensure that the TruSpeed is powered ON 2 Press the button The display should look like Figure 23 Compare the instrument s LCD to Figure 23 A Compare the instrument s in scope Heads Up Display to figure 23 B The lower portion of the display will flash 5 times If the display times out before ...

Страница 29: ...e target that the instrument might detect so you know without a doubt that any change in pitch is due strictly to the target 2 Ensure that the TruSpeed is powered ON 3 Press the button two times to activate the Test Tone display screen It should look similar to Figure 24 4 Scan the target Press and hold the TRIGGER while panning the instrument across the target The tone changes pitch when the inst...

Страница 30: ...matical calculations When setting up an area for these tests LTI recommends Permanently installing the test area in a convenient location The test area must establish a permanent known distance between a shooting mark and a target Fixed Distance Zero Velocity Test or between a shooting mark and two targets Delta Distance Test Using a metal tape to measure the distance this will ensure that the mea...

Страница 31: ... shooting mark on the ground to the base of a wall the operator should hold and aim the instrument parallel to the ground to achieve a straight and level path from the instrument to the target 1 Stand over the shooting mark 2 Ensure the TruSpeed is powered ON and that the Speed Mode is active 3 Use the reticle to aim to the target 4 Press the TRIGGER 5 Check the results of the measurement on the d...

Страница 32: ...a whole meter for ease of use The minimum distance to the closest target must be greater than the minimum distance of the instrument which is 15 25 meters Please refer to Figure 27 as a guide for positioning the targets and the shooting mark 1 Install the farthest target 2 Measure 55 meters to the shooting mark and mark the shooting spot 3 Measure from the shooting mark to the closer target at 45 ...

Страница 33: ...3 times until the message d1 appears in the upper display 3 Aim to the far target and press the TRIGGER 4 Check the display If necessary you may repeat step 3 5 Press the button The message d2 appears in the upper display 6 Aim to the near target and press the TRIGGER 7 Check the display If necessary you may repeat step 6 8 Press the button The screen displays the difference between the two distan...

Страница 34: ...ess the button repeatedly until the screen display looks similar to Figure 28 2 Press the TRIGGER to complete the Self Test Figure 29 shows an example of all tests proving positive If all tests do not prove positive the appropriate error code will appear in the upper display page 16 If the instrument fails the Self Test 1 Press the button to power OFF the TruSpeed 2 Press the button to once again ...

Страница 35: ...g digit Press the button to subtract 1 from the value of the flashing digit Press the button to move to the digit to the left of the flashing digit Valid Values 0 to 322 km h Entering a value of 0 km h disables this feature Press the button to store the value as the local speed limit If you entered a valid value the instrument will emit a single beep and store the value as the local speed limit If...

Страница 36: ...r appears in the Lower Display In this example the model number is 100 and the firmware version number is 1 19 Serial Number Display To display the serial number of your TruSpeed press the button repeatedly until the serial number is displayed The display should look similar to Figure 33 The serial number has 6 digits and appears in the upper and lower display In this example the serial number is ...

Страница 37: ...cess moisture Towel off excess moisture and air dry the instrument at room temperature Exterior dirt Wipe exterior surfaces clean Use isopropyl alcohol 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 To clean a lens moisten it with lens cleaning solution and wipe it with a clean cloth or le...

Страница 38: ...p bit 3 Power ON the TruSpeed and verify that the speed mode is active 4 Take the desired measurement Remote Trigger It is possible to remotely trigger the TruSpeed and take measurements 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 s...

Страница 39: ...del TS100 versionid The version ID of the internal firmware preceded by a hyphen date The effective date of the firmware version MMM DD YYYY format csum 32 bit checksum Example Version ID Messages Request ID CR LRF Response ID TS100 1 10 4 Mar 30 2008 9235FA06 3AAA Serial Number Request SN CR LF SN The request identifier CR A carriage return LF An optional line feed character The instrument s resp...

Страница 40: ... when the measurement was taken the number will be preceded by a minus sign Range The range measurement Standard legal values 0000 0 to 650 0 unsigned Long Range legal values 0000 0 to 1200 0 unsigned Sunits Speed units K km h Runits Range units M meters csum 8 bit checksum CR Carriage return LF An optional line feed character Example Speed Range Messages SP 80 213 8 K M 493D If a measurement erro...

Страница 41: ...ers Weather Mode 61 meters Continuous Mode 15 meters Maximum Range Standard 650 meters Long Range 1 200 meters optional feature Range Accuracy 15 cm Range Resolution 0 1 meter Beam Divergence 2 5 milliradians nominal Laser Wavelength 905 nanometers nominal Temperature Range 30 C to 60 C Power Two alkaline NiCad or NiMH rechargeable C cell batteries providing up to 25 hours of cordless operation Ey...

Страница 42: ...rget aim slightly above the target Erroneous readings not repeatable Do you have a clear line of sight Check the scope alignment Is it raining or foggy If yes is the Weather Mode active If not turn it ON Keep in mind that the minimum range will be 61 meters When measuring a short range to a small target aim slightly above the target Limited Range Do you have a clear line of sight Rain or fog will ...

Страница 43: ...e 29 laser Light Amplification by Stimulated Emission of Radiation lidar A device that is similar in operation to radar but emits pulsed laser light instead of radio waves microcontroller The computer processor that controls all of the functions of the TruSpeed Receive Lens Located on the front panel of the TruSpeed it is the bottom lens and receives the signals back from the target and then feeds...

Страница 44: ...he aiming reticle 14 Brightness Control button 6 buttons 6 C cleaning 35 confidence checks 28 construction 39 Continuous Mode 23 41 button 6 display indicator 12 cosine effect 19 minimizing 20 D d1 13 31 d2 13 31 data format 36 dEF CLEAr 13 14 Delta Distance Test 30 41 results 31 Display Backlight 6 display indicator 12 display indicators 12 Display Integrity Test 26 41 download instructions 36 dr...

Страница 45: ...ay 12 M maximum range 39 measured speed 19 microcontroller 41 minimum range 39 Weather Mode 22 moisture protection 35 N negative value speed display 21 no power 40 O OFF 11 ON 11 operating temperature 3 35 P panels front and rear 4 PASS 13 32 polarizing light filter 5 positive value speed display 21 power 39 power OFF interval 11 Power ON OFF button 6 powering OFF 11 ON 11 R range 39 accuracy and ...

Страница 46: ...39 SN 13 sounds 15 speaker 4 specifications 39 speed accuracy 39 speed measurements Continuous Mode 23 how to take 18 LCD screen 17 moving vehicle 21 negative value 21 range 39 Weather Mode 22 Speed Mode 17 button 6 Speed Units display indicator 12 storage 35 T temperature range 3 39 Test Mode 26 button 6 display indicator 12 test tone 27 tones 15 Transmit Lens 4 5 41 TRIGGER 4 troubleshooting tip...

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