This Vaisala DIAL Atmospheric Profiler DA10 is
classified as a Class 1M optical device in accordance with International Standard
IEC/EN 60825‑1:2014. Complies with 21 CFR 1040.10 and 1040.11 except for conformance with
IEC 60825-1 ED. 3., as described in Laser Notice No. 56, dated May 8, 2019.
Table 1. Radiated pattern emitted from protective
housing, from DA10 window of near-range measurement unit telescope
Property
Value
Maximum pulse energy
4.7 μJ
Laser wavelength
910.55 nm and 910.99 nm
Peak power
40 W
Maximum average power
44 mW
Maximum average power through 7-mm aperture
520 uW
Pulse duration
160 ns FWHM
Pulse frequency
8.244 kHz
Beam divergence
±0.051 mrad × ±0.33 mrad
Table 2. Radiated pattern emitted from protective housing, from DA10 window of far-range
measurement unit telescope
Property
Value
Maximum pulse energy
10.3 μJ
Laser wavelength
910.55 nm and 910.99 nm
Peak power
40 W
Maximum average power
97 mW
Maximum average power through 7-mm aperture
260 uW
Pulse duration
352 ns FWHM
Pulse frequency
8.244 kHz
Beam divergence
±0.027 mrad × ±0.18 mrad
The following table describes the properties of the sole transmitter module. CL61 must never
be operated and have power on when the transmitter module is not attached to the optics
unit.
Table 3. Incorporated laser (DAT111N transmitter
of near-range measurement unit telescope)
Property
Value
Laser wavelength
910.55 nm and 910.99 nm
Peak power
50 W
Maximum average power
61 mW
Pulse duration
160 ns FWHM
Pulse frequency
8.244 kHz
Typical beam divergence
±7 degrees
Table 4. Incorporated laser (DAT111F transmitter
of far-range measurement unit telescope)
Property
Value
Laser wavelength
910.55 nm and 910.99 nm
Peak power
50 W
Maximum average power
134 mW
Pulse duration
352 ns FWHM
Pulse frequency
8.244 kHz
Typical beam divergence
±7 degrees
Figure 1. Location of explanatory and
certification labels on DA10. The device is equipped with the following labels:
Take the following precautions during
installation, operation, and maintenance:
WARNING Viewing the laser output with telescopic optical instruments (for
example, telescopes or binoculars) may pose an eye hazard. Do not direct the beam
into an area where such instruments are likely to be used.
WARNING Only qualified
maintenance personnel may perform maintenance procedures. Make sure unauthorized
persons cannot access the work area during service operations.
WARNING Use of controls or
adjustments or performance of procedures other than those specified herein may result in
hazardous radiation exposure.
Figure 2. Location of DA10 laser apertures and
direction of transmitted light
1
Laser aperture (2 pcs)
2
Laser class 1M, direction of transmitted light
Laser class of the incorporated
laser (transmitter module) is 3B.
The transmitter modules have a laser aperture
and label as shown in the following figures. Do not remove the transmitter. It is optically
aligned at the factory.
WARNING Do not remove the
transmitter. It emits Class 3B laser radiation when powered.
Figure 3. Location of warning and explanatory
labels on transmitter modules
