Operating&Maintenance Tips for Laser Distance Meter
The laser beam automatically powers off silently after 30 seconds of inactivity while the meter still remains powered on, so you’ll often find that when you press the button, expecting to make a measurement, all you have done is reactivate the laser beam. In this case, you have to press the button a second time to actually make the measurement. To minimize the number of times that this happens, learn to distinguish the slightly different beeps that accompany making a measurement and activating the laser beam.Compared to the measurement beep, the laser activation beep has a slightly lower frequency (tone).
When measuring horizontal distances, keep the device as horizontal as possible.
When measuring long distances, use a target plate made of white paper or cardboard. Using a monopod or resting the device on a surface (rather than holding it in your hand) helps to steady the laser point on distant targets.
There will be a “Info 204” error displayed on the screen if the target is an LCD or plasma computer or TV screen because they absorb the incoming beam and reflects nothing back to the device.
Common errors and countermeasures:
Info 204 Calculation error: Repeat the measurement(s)
Info 208/252 Temperature too high: Cool down the meter
Info 220 Low battery: Change batteries
Info 253 Temperature too low: Warm up the meter
Info 255 Received signal too weak: Use white target plate
Info 256 Received signal too strong(target too reflective): Use target plate
Error Hardware/uncertainty error: Restart the device
Replace the batteries when the on-screen battery icon starts flashing.
Use Alkaline batteries only.
To avoid ruining the device, remove the batteries when you are not going to use it in a long period of time (several months).
Clean the meter by wiping it with a damp soft cloth. Never use solvents or abrasives.
Keep the device away from water, toxic environments and temperature extremes.