Panasonic BT-D1910Y Operating Instruction And Service Instructions Manual page 13

CONTROL PURPOSE
PRESET CONTROLS (VR)
Each preset VRs which belong the manual controls are enabled at preset
selector "ОМ" position.
Preset levels are preadjusted at factory shipment.
HORIZONTAL DELAY
SWITCH
Ш
UNDERSCAN SWITCH
[5]
Depress this switch to observe the horizontal sync signal. The picture is
delayed horizontal and the horizontal sync signal is displayed in the left
size of the screen. Picture brightnwss is automatically increased for easy
observation.
Depress this switch for underscanning. The display size is reduced by
approximately 596 so that four corners of the raster are visible.
VERTICAL DELAY
SWITCH
H
Depress this switch to observe the vertical sync signal.. The picture is
delayed vartically and the vertical sync signal is displayed near the center
of the screen. Picture brightness is automatically increased for easy
observation.
е A pulse cross is displayed by depressing both the Ш апа E switches.
BLUE SIGNAL SWITCH
Depress this switch to observe BLUE SIGNAL in Black and White.
This makes it easier to adjust chrominance and hue (using SMPTE
color bar display) and increases visibility of video tape dropouts and
playback noise.
FILTER (COMB/TRAP)
SELECTOR
SYNC (INT/EXT)
SELECTOR
TRAP FILTER : This position is used when adjusting equipement
connected to monitor.
COMB FILTER : This position provides higher resolution than
with the trap filter.
This is the normal switch position.
The monitor operates on the sync signal from the displayed
composite video signal .
The monitor operates on an external sync signal supplied from
the EXT. SYNC connector on the rear panel.
AFC SELECTOR
Selects the AFC time constant.
e FAST : This mode is fast enough to correct for VTR jitter.
Use the position to obtain a stable playback picture from
a VTR.
: This mode is slow enough to display the time base in-
stability introduced by mechanical jitter, in the VTR
playback signal.