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1.
Description & Theory of Operation
This section of the service manual presents details of ProCam operation. The
discussion is mainly limited to those areas which are new or unique to the ProCam.
The first part of the section is a general discussion of the new technology found in
the ProCam, while the second part of the section details the interactions of
ProCam parts in a sequence of operation. Next are timing and signal distribution
diagrams. The final part of this section contains an engineering description of
ProCam switches and signals.
It is strongly recommended that you have a background knowledge of Spectra
technology before you read this section.
Unique ProCam Features
Here are the features unique to the ProCam:
•
10,000-cycle life, improved durability.
•
30 wattsecond (30 joule) strobe with 18 ft. (5.5m) range.
•
Wider-angle optics: 52
Vertical field 43
•
Six-element f/10, 95mm focal length lens (more depth of field than
Spectra).
•
Date/time imprint in top left corner of picture.
•
Full flash, 50/50, or fill flash strobe exposure.
•
Accessory close-up lens focuses to 12" (305mm).
General ProCam Features
SPAR Thyristor Strobe
The ProCam strobe is a compact, highly efficient system. The flashtube is
contained in a shock-resistant housing which occupies the right corner of the
camera face (Figure 1-1). It is electrically connected to the Strobe PC Board
Assembly located on the side of the Cone Assembly. This Board contains all the
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taking angle = 25% more subject in picture.
o
o
, horizontal field 52
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