PN 10795T 9
OPERATING PROCEDURES
Using the H410 with Vector Pyroelectric Detectors
Pyroelectric detector models P25, P50, SP25 and SP50 are coated with a special black absorbing material
which provides a very flat spectral response over a broad wavelength band. Pyroelectric detector models
PHD25, PHDX25, PHDX25UV, PHD50, PHDX50, PHDX50UV, SPHD25, and SPHD50 are coated with
a special high damage absorbing material which provides absorption over a broad wavelength band.
Models PHF25, PHF50, SPHF25 and SPHF50 have a partially absorbing, partially reflecting chromium
coating. The relative spectral responses of these detectors are shown in the following graph. Please be
aware of the absorption differences between the detector’s calibration wavelength and your operational
wavelength. Detailed absorption information is contained in the charts at the end of this manual.
RELATIVE SPECTRAL RESPONSE
20
30
40
50
60
70
80
90
100
0.1 1 10 100
*HDX Limited to 0.4 to 2.0
i
Figure 3. Pyroelectric Detector Spectral Response
Before using your Vector power meter, please review the energy density formulas given in the chart at the
front of this manual. Familiarize yourself with all of the specifications of the detector models which you
are using. A damage test slide is provided with each P and PHF type detectors, but not with PHD type
detectors. Fire the beam at the test slide before using the detector to be sure you are operating under safe
conditions.
Note: The trigger threshold of the H410 is 7 % of full scale.
1. To Turn On the Meter
Note: For the most accurate measurements possible, the H410 should be turned on and warmed up for 30
minutes.
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