GE 4PE350A3 Instructions Manual page 30

EBI-6351
COLOR CAMERA
5. Depress the appropriate push button
on the viewfinder panel and repeat steps 2
through
4,
above,
for
the
R, B,
and G
chrominance channels.
6. Set the ALIGN test signal switch in the
off position.
Video Level Set
1. Turn the METER SELECT switch to
\V under VIDEO.
2. Set the CALIBration switch in the ON
position.
3. Adjust the level control, R2, on the
LUMINANCE VIDEO amplifier board until
the meter pointer reads mid -scale on the
red line.
4. Set the CALIBration switch in the off
position.
5. Depress the EXPosure SELECT push
button, if necessary, to obtain local control
of the exposure control.
6. While observing the Resolution Chart,
adjust the EXPosure control until the meter
pointer reads mid -scale on the red line.
7. Depress the R push button on the view-
finder panel.
8. Turn the METER SELECT switch to
R under VIDEO.
9. Observe the Resolution Chart and adjust
the level control, R102, on the R CHRO-
MINANCE VIDEO amplifier board until the
meter pointer reads mid -scale on the red
line.
10. Depress the B push button on the view-
finder panel.
11. Turn the METER SELECT switch to B
under VIDEO.
12. Observe the Resolution Chart and adjust
the level control, R302, on the B CHROMI-
NANCE VIDEO amplifier board until the me-
ter pointer reads mid -scale on the red line.
13. Depress the G push button on the view-
finder panel.
14. Turn the METER SELECT switch to G
under VIDEO,
15. Observe the Resolution Chart and adjust
the level control, R202, on the G CHROMI-
NANCE VIDEO amplifier board until the me-
ter pointer reads mid -scale on the red line.
16. Depress the W push button on the view-
finder panel.
16
17. Set up the EIA Linearity Chart.
18. Adjust the zoom lens until the arrows
on the EIA Linearity Chart are just showing
on the viewfinder.
19. Depress the TEST 1 push button on the
monitor selector panel to apply a cross-
hatch signal from the Model 4TC68B1 panel
to the Camera. The crosshatch signal
is
superimposed on the EIA test pattern. It is
a primary check of the positioning of the
luminance yoke.
20. Ascertain that the chart is level and
rotate the yoke by use of the knob on the
side of the preamplifiers until the cent_%.
horizontal row of balls is parallel with the
grating pattern.
21, Adjust the SKEW control on the local
Camera control panel until the center ver-
tical row of balls is parallel with the grating
pattern.
22. Adjust the horizontal linearity control,
R67, on the Camera sweep board until the
vertical grating lines fall as close as possible
to the centers of the middle row of horizontal
circles.
23. Adjust the vertical linearity control,
R10, and the top linearity control, R12, on
the Camera sweep board until the horizontal
grating lines fall as close as possible to
the centers of the middle row of vertical
circles.
NOTE
Set the bias control on the Cam-
era sweep board so that the voltage
at the emitter of Q7 is zero.
24, Depress the VF VID TEST button on
the
monitor selector panel to cancel the
crosshatch signal.
Registration
1. Set up the EIA Registration Chart.
2. Adjust the size and centering controls
of the luminance channel for approximately
the correct size as determined by the amount
of corners desired.
3. Depress the W -R push button on the
viewfinder panel.