Sony BVM-1911 Operation And Maintenance Manual page 12

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Section 1 Operation
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Tally lamp
Lights when pin No. 3 and No. 8 of the REMOTE
connector on the rear panel are short-circuited.
The model number plate has been attached here at
the factory. Replace it with one of the supplied
tally number plates, as illustrated below.
Plate (white)
Number plate
Cover plate
f}
AUTO SETUP PROBE connector
Connect the optional BKM-2053 auto set-up probe
for auto setup operations.
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DEGAUSS switch
When the power is turned on, automatic
degaussing is activated.
To demagnetize the screen manually, press this
switch momentarily with the power on.
When degaussing repeatedly, wait for 5 minutes or
more before pressing the switch again.
1
-811.
Operation
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SCAN MODE switches
[g]
(underscan): Depress this switch for
underscanning. The display size is reduced by
approximately 3% so that four corners of the
raster are visible.
[I]
(horizontal delay): Depress this switch to
observe the horizontal sync signal in the left
quarter of the screen. Picture brightness is
automatically increased for easy observation.
~
(vertical delay): Depress this switch to
observe the vertical sync signal. The picture is
shifted vertically and the vertical sync signal is
displayed near the center of the screen. Picture
brightness is automatically increased for easy
observation.
• A pulse cross is displayed by depressing both
the
[I]
and~ switches.
• To resume normal scanning, press to release the
depressed switches.
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SCREEN switches
The R, G and B switches turn the red, green and
blue beams respectively on and off. To turn off the
beam, depress the switch. To turn it on again,
press to release it.
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APERTURE switch
Normally keep this switch released. A flat
frequency response is obtained.
For aperture correction, depress this switch and
adjust the APERTURE control inside the drawer.
The boost frequency, 4.5 MHz or 6.5 MHz, can be
selected with the S 1 switch on the internal BG
board.
With the SI switch set at the 4.5 MHz position, the
frequency response can be adjusted continuously
with up to 6 dB boost at 4.5 MHz for subjective
enhancement of the displayed picture.
With the S 1 switch set to the 6.5 MHz position, the
frequency response can be adjusted continuously
with up to 6 dB boost at 6.5 MHz for
compensation of aperture loss of the CRT.
8
BLUE ONLY switch
Normally keep this switch released. Depress this
switch to turn off the red and green signals. A blue
signal is displayed as an apparent monochrome
picture on the screen. This facilitates CHROMA
and PHASE control adjustments and observation
of VTR noise.