Nado NDRA91, Руководство пользователя

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NDRA91-92
Manual Operating conditions
NADO
Page 19 Seite 19
3.4 Improperly use – error sources
The device may only be used when the safety advice described in chapter 0 is
observed. The non-observance of the safety advice can lead to damages of the
device or to injuries of the eyes.
To achieve correct measurement results, avoid the following error sources:

Measurement against the sun or other intense light sources

Measurement onto low reflective target surfaces in highly reflective
environments

Measurements onto highly reflective surfaces (mirror)

Rapidly-changing measurement conditions (rapid distance changes)

Two or more
NDRA91
may not be "frontal view" because the devices
interact. To avoid false readings, the devices must be successively
raised. Use the trigger generator TPG1 (accessory) or the trigger
function according to item 2 in chapter 5.5 (Interconnection of
several
NDRA91
).

Operation and storage of the device under conditions that do not
conform with the specifications

Overheating
The operating temperatures have to be observed. The overheating
of
the device has to be avoided in any case. When the operating
temperatures are exceeded, the device is not switched off
automatically. Persisting overheating of the device leads to a
reduced lifetime of the laser diode.