Jadak Photo Research SpectraScan PR-7 Series, User Manual

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Chapter 5
– Setup Menu
47
FIGURE 39 - SYNC PERIOD DATA ENTRY SCREEN
4. Touch the numeric keys to enter the SYNC period. The range is 20 to 2000 Hz.
5. Touch Back when finished.
H
OW TO
S
ET
S
MART
D
ARK
M
ODE
During a measurement the PR-7XX makes 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-7XX will
attempt to use the same dark current values for more than one measurement thus reducing total measurement
time by approximately half. 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.