RTFTechnologies LTI Lasertech Impulse 200LR Laser Rangefinder

LTI Lasertech Impulse 200LR Laser Rangefinder

Overview:

A tear down and review of the Lasertech(LTI) Impulse 200LR laser rangefinder is documented. The Laser tech Impulse 200LR rangefinder has a 500m maximum range with 0.01m resolution and 0.03m accuracy. It will detect a minimum range of about 0.08m (rangefinder face against target), limited by the height between the mounting points of the lenses (the scattered light will travel on a triangular path). It has a built in inclinometer with 0.1deg accuracy (in the rangefinder I have the inclinometer is non-functional). The rangefinder has a built in RS232 interface to communicate with a computer or other survey equipment.

Overall the Laser tech rangefinders are some of the best and most accurate rangefinders on the market. Unfortunately their new price is very high, the maximum data rate is 1-2 readings per second, and they are larger then most portable units.

http://www.lasertech.com/Impulse-200-LR-Specifications.aspx

Hardware Specifications:

Weight:	2.2 lbs. (1 kg)
Size:	6 x 2.5 x 5 in. (15.2 x 6.4 x 12.7 cm)
Power Supply:	(2) AA batteries (20 hours of use)
Accuracy (Typical):	0.1 - 0.2 ft. (3 - 5 cm)
Accuracy (Max):	0.5 ft. (15 cm)
Overhead cable / Stake:	330 ft. (100 m)
Phone pole / Stockpile:	655 ft. (200 m)
Tree / Tower:	985 ft. (300 m)
Rock Face / Building:	1640 ft. (500 m)
Max Distance:	1885 ft. (575 m)
Range Resolution:	0.01 ft. (0.01 m)
Inclination Limits:	+/- 90 deg.
Inclination Accuracy:	+/- 0.1 deg.
Temperature:	- 22 to + 140 F (-30 to + 60 C)
Environment:	Waterproof to IP 67 and NEMA 6

Rangefinder (2/22/2014):

Lasertech rangefinder

Rangefinder (2/22/2014):

Scope mounts on top

Rangefinder (2/22/2014):

LCD display and serial cable(pinout in manual)

Rangefinder (2/22/2014):

Side view

Rangefinder (2/22/2014):

Front view on lenses

Rangefinder (2/22/2014):

Back view of serial cable and LCD

Rangefinder (2/22/2014):

Circuitry and optics

Rangefinder (2/22/2014):

Controller board.

Rangefinder (2/22/2014):

HV power board for laser and diode.

Rangefinder (2/22/2014):

Top view of circuitry

Rangefinder (2/22/2014):

Resistive fluid tilt sensor, probably communicates over a serial link. The sensing element in this rangefinder is bad

Rangefinder (2/22/2014):

Control chip for inclinometer is a Motorola microcontroller.

Rangefinder (2/22/2014):

Display board and battery compartment.

Rangefinder (2/22/2014):

Display board

Rangefinder (2/22/2014):

Inside casing

Rangefinder (2/22/2014):

Serial cable

Rangefinder (2/22/2014):

Connector is a Turck PSW 4M-2/S90

Rangefinder (2/22/2014):

Displaying range

Rangefinder (2/22/2014):

Sending data to computer.

Rangefinder (2/22/2014):

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