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Position, Dot clock, Clock phase – Panasonic TQBH9003-6 User Manual

Page 42: Keystone

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42

NOTE:
B If you press the AUTO SETUP button

after correcting the keystone distortion
manually, the automatic keystone
correction function will operate and the
corrected picture will return to its
previous incorrect condition. In addition,
if you change the input signal and press
the AUTO SETUP button, the keystone
correction may be cancelled depending
on the type of signal and the angle of tilt
of the projector. To prevent them from
happening, you can set “AUTO
KEYSTONE” in the OPTION menu
to “OFF”

B The greater the correction of keystone

distortion amount, the more the picture

Picture

condition

Operation

Press the F

F

button.

Press the G

G

button.

Press the I

I

button.

Press the H

H

button.

POSITION

Moves the picture position.
Press the I or H buttons to move the
picture horizontally.
Press the F or G buttons to move the
picture vertically.

DOT CLOCK

(RGB only)
Periodic striped pattern interference
(noise) may occur when a striped
pattern such as the one below is
projected. If this happens, use the
I and H buttons to adjust so that
any such noise is minimised.

CLOCK PHASE

(RGB only)
Adjust the DOT CLOCK setting first
before carrying out this adjustment.
Use the I and H buttons to adjust so
that the noise level is least noticeable.

NOTE:
B If signals with a dot clock frequency

of 140 MHz or higher are being input,
interference may not be completely
eliminated when the DOT CLOCK
and CLOCK PHASE adjustments are
carried out.

KEYSTONE

Before carrying out keystone correction,
1) adjust the forward/back angle of tilt of
the projector by pressing the adjuster
buttons and 2) press the AUTO SETUP
buttons to correct vertical keystone
distortion. (pages

30

and

31

)

The vertical keystone distortion will
be automatically corrected by the
projector's automatic setup function

KEYSTONE

H:

V:

0

0

POSITION

H:

V:

128

32

when using the standard lens.
However the horizontal distortion or
adjustment of the tilted screen needs
to be corrected manually by following
any of the procedures below.