Checkline PK2X - Manual (Page 5)

– 5 –
Bezel Screw: Remove this
screw to release the bezel as
needed when replacing flash
tube. 1 / 4 -20 Threaded Insert: Used
when fix-mounting strobe on
optional tripod, articulating
arm or other mounting fixture,
External Trigger Indicator: Used when
external sensor is connected, controlling
the flash rate via trigger input rate.
3.2 Back Side
3.3 LCD Display
Flash Rate # or Error Message Low Battery Indicator
– 20 –
Helpful Hints
■ The most commonly used formulas are indicated by an asterisk.
■ The values for “X,” “Y” and “Z” are taken in descending order. For example,
the value for “X” is greater than the value for “Y”
■ The values are for successive singular harmonic images. Do not use
multiple images.
■ If two points are recorded, equation (1 Y gives only approximate results.
Equations (2) with (4) and (3) with (5) are more precise, but error can be
introduced due to the rounding.
■ If three points are found, Equation (6) is the most commonly-used formula.
■ For completeness, equations (9) through (21) offer mathematical derivations
and condensed versions of Equation (6). Also included are the formulas for
calculating Sx, Sy and Sz.