Radar & Laser / Lidar information Pages
LTI Marksman 20/20
Here under test and evaluation is my new to me Marksman
The Marksman is a newer version of the LTI 20/20 in a similar case.
The self test is really fast, first displaying all 8's ( 8 8 8 8 ) then these dashes.
During the start up self test if one of the back function button gets pressed,
this code E 70 shows, to clear, turn unit off then back on.
These errors are common during targeting of both range / distance and speed.
Here the scope brightness is adjusted via the buttons on the
back of the unit within a range of 0 (dark) and 40 (bright)
Using the left and Right button AFTER the timing mode we can adjust the brightness.
The Back of the unit "Display Intensity", is adjusted by the LEFT KNOB on the back of the unit:
The scope is polarized and by turning the end of the scope, the light in the sight
becomes darker or lighter. Best for a sunny day to ease viewing.
Polarizer Removed: (above)
Its small but clear in there. Here's some reading examples.
This is all the officer sees overlaid on your vehicle.
The dot is very clear BUT EXTREMELY SMALL. These photos are blurry.
The speed displayed on the standard Marksman version only lasts in the scope for 2-3 seconds.
But is available on the back of the unit until the trigger is depressed again.
I superimposed crosshairs to show where the dot actually is.
Using one camera to sight through the LIDAR sight isn't easy,
but somewhat accurate clocking and aiming CAN be done.
Now any officer who clocks through trees like this limits his ability to clock a vehicle as shown in these sight photos.
I was CONSTANTLY getting error codes and no speed readings.
However, I could get distance / range readings (in feet) by aiming
the beam on the street and having the vehicle break the beam.
The range I was able to get from this vantage point was ~350 - 210 feet approaching only.
The telephone pole was my benchmark distance range at 140 feet.
The Osprey Lidar was ~45 yards or so. Both within several feet.
The LIDAR unit was rested on the double hung window for stability.
Even resting the unit: panning a license plate was nearly impossible at 300 feet.
This hydrant (circled) was one of the clues I found that the scope dot and beam were NOT aligned.
The tree branch just below was ~120 feet. The up / down axis was off by a bit.
Leading me to think the beam bounced in front of oncoming traffic.
HOWEVER: On occasion, License plate target acquisition was nearly INSTANTANEOUS.
No beep, beep , beep like usual.
BING! and a target speed registered.
I was able within 2 hours on this unit, to rip off three cars in a row at ~30 MPH. Bang bang bang.
All within a 200 foot window, shown above.
The back of the Marksman unit has three function buttons.
The right one is the speed/range button.
After a reading is made, pressing the speed/range button toggles between
speed and the distance the unit made the speed reading.
Range readings FLASH. Speeds don't in the Marksman version.
If the target is acquired in range mode, acquisition is quicker, but NO speed reading can be made.
If the vehicle was clocked during the speed setting, the button can switch
Stationary tree
back and forth between the speed and the distance where it was made.
"Funky Grip"
(showing the "Funky Grip" to make BOTH speed and distance in Scope for 2 seconds....)
More testing and panning to come.
The MOST challenged photo
Not ONE but TWO
Common Targeting problems:
These are on parallel axis with the direction of traffic
Now what happens when some Cosine / Tangent angle is thrown into the reading?
