Jadak PHOTO RESEARCH SpectraScan PR-655, Руководство пользователя

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PR-655/670 User Manual
34
To set the SYNC mode:
1. Make sure Adaptive is set to Enabled.
2. Touch the
▼
or
▲
icon in the SYNC field to toggle between None, Manual, and Automatic.
3. If Manual is selected, touch the field adjacent to Frequency to access the following data entry screen :
FIGURE 34 - SYNC PERIOD DATA ENTRY SCREEN
4. Touch the numeric keys to enter the SYNC period. The range is 20 to 400 Hz.
5. Touch Back when finished.
S
ETTING
S
MART
D
ARK
M
ODE
(PR-670 O
NLY
)
During a measurement the PR-655 and PR-670 make two separate measurements – one of the optical signal
( Light ), and a second measurement of the detector dark current ( Dark ). By enabling the Smart Dark feature, the
PR-670 will attempt to use the same dark current values for more than one measurement thus reducing total
measurement time. The
Smart Dark feature is used when the instrument determines that the (second or
successive) measurement in a series is using the same exposure time as the first measurement. If a fixed
exposure time is used for a measurement,
Smart Dark will be used until the exposure time is changed.
Smart Dark is a useful tool for applications such as display uniformity, or other testing where multiple
measurements of the same light level are performed.
To enable Smart Dark:
1. Touch the field next to Smart dark to toggle between Enabled and Disabled.