2. Tune in the station test pattern on the receiver. Find the mechanical
center of receiver screen and adjust set so center of station pattern
coincides with this point. Adjust receiver for good linearity, size
and centering. Switch on and off the station several times to be
sure the horizontal circuit of the receiver is not set at a critical
point.
3. With a marking crayon or grease pencil draw circles on receiver
front glass representing the circles of test patttern. The exact center
of the test pattern is also marked on the face of the monitor.
4. Connect the Television Analyst R.F. output cable to the antenna
terminals of the receiver along with an outside antenna.
5. Tune the TV receiver to a local channel and tune the Television
Analyst to the same channel. Reduce the R.F. attenuator of the Tele
vision Analyst so that both pictures are superimposed on the receiver.
It is sometimes more convenient to obtain this display with the
Television Analyst on an adjacent channel.
The purpose of" this adjustment is to compare the Analyst horizontal fre
quency to the station horizontal frequency. By adjusting the instrument
Horizontal Control it is possible to have the Analyst signal slant to the left,
to the right, or stand straight up, as it slides by. Adjust the Horizontal Control
station picture. This puts the instrument exactly at station horizontal frequency.
For reference, log the number on the panel to which the horizontal knob is
pointing when instrument horizontal frequency is the same as the station
frequency.
6. Tune the TV receiver to an unused channel in your area and the
Television Analyst to the same channel. Adjust fine tuning on the
receiver if necessary for best resolution. Adjust Television Analyst
controls, Vertical Size and Linearity, Horizontal Size and Horizontal
Drive, and centering so that the Television Analyst test pattern is
superimposed over the circle drawn on the face of the monitor receiver.
All linearity, size and centering adjustments are available by raising
the hinged cover on the Television Analyst. Closing the cover will
cause a very slight shift in the centering. Make your adjustments
to compensate for this.
When these adjustments have been completed, you will then have matched
your Television Analyst to the specific requirements of your area.
The long term stability of the Television Analyst is excellent. However,
the factory recommends that all adjustments be checked periodically and
that the face of the scanning tube be cleaned occasionally.
Where size, linearity and centering of a test pattern obtained from a local
TV station is not the average of the most commonly viewed stations, it will
be necessary for the technician to set his monitor receiver for a pattern size
and centering that he knows from experience will provide viewer satisfaction
when the set is in normal use.
This completes the adjustments necessary, and you may now use the Tele
vision Analyst for setup of TV receivers for linearity, size and centering, etc.,
with complete confidence that all receivers set up will meet YOUR local con
ditions.
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