Jadak PHOTO RESEARCH SpectraScan PR-655, Руководство пользователя

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PR-655/670 User Manual
30
S
ELECTING AN
A
PERTURE
(PR-670
ONLY
)
1. Touch the
▼
or
▲
icon adjacent to the field named Aperture to scroll through aperture selections until
the aperture of choice is displayed. Standard apertures include the 1°, 0.5°, 0.25° and 0.125°.
S
ELECTING A
P
RIMARY
A
CCESSORY
A Primary Accessory is one that replaces the standard MS-75 lens during use. Primary accessories include the
MS-75, SL-0.5X, SL-1X, MS-2.5X, MS-7.5, CR-655 (CR-670), FP-655 (FP-670), IS-655 (IS-670), ICC-655 (ICC-670), LA-
655 (LA-670), CR-655 (CR-670) and LR-127.
1) Touch the
▼
or
▲
icon adjacent to the field named Primary Accessory to select the accessory to be
used in the upcoming measurement.
Warning: Failure to select the proper accessory in use prior to a measurement will cause the
instrument to produce erroneous results.
S
ELECTING AN
A
DD
-
ON
A
CCESSORY
An Add-on Accessory is one that is used in conjunction with a Primary Accessory, usually an objective lens. Up
to 3 Add-on Accessories may be used during a measurement. Examples of Add-on Accessories include all ND
filters, the RS-3 and SRS-3.
1. To select an Add-on Accessory, touch the
▼
or
▲
icon next to the Add-on Accessory field to scroll
through calibrated selections until the accessory of choice appears. A maximum of 3 Add-on accessories
may be used during a measurement.
S
ETTING THE
N
UMBER OF
M
EASUREMENTS TO
A
VERAGE
To help improve measurement results, especially measurements where low light levels are being tested, the PR-
655 and PR-670 can be instructed to make consecutive measurements (1
– 99) and average the results.
Following a multiple measurement sequence, the spectra are averaged, and resultant photometric and
colorimetric values calculated from the averaged spectra.
1. To set the number of measurements to average, touch the field next to Average . The following screen
appears: