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Section 2—C-30B Camera
OPERATING INSTRUCTIONS
This section o f the manual is intended to familiarize the
operator w ith use of the C-30B Camera to record crt traces.
Included is a description o f Controls and connectors,
Information fo r mounting the camera to the instrument,
focusing instructions, film loading, and development In
form ation, Photographie techniques, film selection cri-
teria, and additional useful operating Information.
The C-30B Camera is shipped in a carton along with its
Standard accessories. A t installation time, save the shipping
carton and packaging materials for reuse should reshipment
become necessary. Refer to the end of the Maintenance
section for repackaging instructions.
DESCRIPTION OF CONTROLS AND CONNECTORS
Refer to Figure 2-1 fo r location of camera Controls and
connectors.
FOCUS—This control adjusts the distance from the
fro n t of the camera lens to the display being photo-
graphed and is used fo r focus alignment.
^ 2 ^
FOCUS LOCK—
Locks the FOCUS knob to a partic-
ular adjustment to prevent accidental changing of
camera focus.
f-STOP (Aperture)—
This control provides for con-
tinuous adjustment o f the size of the lens opening. It
is calibrated in seven f-stops from 16 to 1.9, w ith f/1 6
being the smallest aperture opening and f/1 .9 the
largest aperture opening.
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SPEED (Shutter)
—This selector Controls the time
period that the shutter remains open to admit light
fo r exposing the film . There are eight selectable
shutter speeds ranging from 1/125 to 1 second. In the
B (bulb) Position the shutter remains open as long as
the shutter button is held down, and the shutter
closes when the shutter button is released. In the T
(time) Position the shutter opens when the shutter
button is first pushed down and w ill remain open
until the shutter button is pushed down the second
time.
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Shutter Button—
This button actuates the camera
shutter when pushed down. The threaded center of
the button permits installation of an ASA internal
cable release for remote mechanical actuation o f the
camera shutter. Refer to the tabbed Accessories page
in the rear of the manual fo r the cable release
actuator part number.
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Object-to-Image
Scale and Magnification
Index
Button—
To change magnification, push and hold in
the Magnification Index button while sliding the
shutter housing along its sleeve. When the desired
object-to-image number appears in the window,
release the Magnification Index button and slightly
move the shutter housing until it engages the detent
for the desired object-to-image number. When setting
the camera for an object-to-image ratio of 1:0.85, the
numerals 0.85 w ill not appear in the window; instead,
a diamond-shaped symbol w ill appear.
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X
Sync Output Terminals—
These two terminals are
used to slave external equipment to the Operation of
the shutter. They are connected to a mechanical
switch which is part of the shutter assembly. The
continuity between terminals represents switch
closure during the time that the shutter is open. A
commercial two-connector X Sync cable, provided
by the users, is required. The COMMON terminal is
directly connected to the camera case.
Dark Slide—
The dark slide is installed to prevent
exposing unused film when the camera back is
removed from the camera. A dark slide is furnished
with both the Polaroid Roll- and Pack-Film backs.
For the Graflok back, the dark slide may be part of
the film holder used w ith the Graflok back.
REV A FEB 1980
2-1
Summary of Contents for C-30B
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