BNC 1420 - Video Microscope - Manual (Page 22)

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The LED control panel slider bars are used to adjust the intensity of the
four LED banks, A D. The LED intensity is adjusted by pulse width
modulation with a fixed pulse frequency that is synchronized to the video
field frequency.
Checking the Gang box will cause all LED banks to be adjusted
simultaneously when one slider is activated.
The focus control panel is used for moving the focus actuator up and down.
The + and
buttons move the actuator in single steps. The focus actuator
can also be activated by the keyboard + and keys.
The presets panel allow saving and restoring the four traverse
position/LED illumination settings in storage cells A D. Clicking a button
will load the stored preset and adjust traverse position and LED
illumination to the stored values. Checking the Save box first will store the
current setting in the selected storage cell.
For a description of the Video recording and probe functions, see sections
6 and 7 below.
4.1 usc files
The scopePRO software saves the instrument and video settings in a file
with .usc extension.
To open a scopePROfile, choose File>Open, then locate the file on your
hard drive. You can also choose from recently opened files at the bottom
of the File menu.
4.2 Online and offline operation
scopePRO can work in both online and off-line mode. When on-line, it
communicates with a Model 1420, controls its functions and accepts live
video signals from a DirectX compliant video capture card.
When off-line, scopePRO can open a stored video file for playback and
further processing. scopePRO will go into off-line mode whenever it fails
to locate a Model 1420 on the selected serial port.