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Appendix A Operating Specifications
Table A-2. Laser specifications
Characteristic
Type
Warm-up time
Operating temperature
Power requirements—laser
head
Vacuum wavelength
Wavelength accuracy
Short-term (1 hour)
wavelength stability
Long-term (lifetime)
wavelength stability
Output power
Beam diameter
Beam center-line spacing
Safety classification
1
Optics temperature must be stabilized to ± 2° C (3.6° F) to achieve accuracy specifications.
Measurements Reference Guide
Specification
helium-neon with automatically tuned
Zeeman-split two-frequency output
less than 10 minutes (typically 4 minutes)
0° to 40° C (32° to 104° F)
100 to 240 Vac, 50/60 Hz
50 W during warm-up, 33 W after warm-up
632.991354 nm
± 0.1 ppm
(± 0.02 ppm of measured wavelength with
factory calibration)
± 0.002 ppm typical
± 0.02 ppm typical
≥ 180 μW
(< 1 mW per Class II laser product)
6 mm (0.24 in)
11.0 mm (0.44 in) input to output aperture
Class II laser product conforming to U.S.
National Center for Devices and Radiological
Health Regulations 21 CFR 1040.10 and
1040.11
1
A-3
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