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5.2 Monitor Operation
5.2.1 Monitor Display Outputs
The front panel buttons can be used to operate either on
the MON-A monitor display, or on the MON-B monitor
display. The MON-A monitor displays a digitized image and
so Zoom and Freeze operations can be performed on the
MON-A monitor. The MON-B monitor displays analog full-
screen images only, and so quad compression, Zoom and
Freeze cannot be performed on the MON-B monitor
output.
5.2.2 Mon-A Monitor Display
The first monitor output, designated as the MON-A
monitor, is used mainly for quad displays. It will
simultaneously display four camera images which have been
digitally compressed to one quarter of normal size, along
with camera ID, titles and status information.
The MON-A monitor can also be used for digital full-screen
camera display, manually or via alarm inputs, so that if an
installation is not suited to the use of two display monitors,
the operator still can have full-screen call-up capability.
5.2.3 QUAD Button
Selects the quad display on the MON-A monitor output.
On the TC8278 Series, subsequent pressing the QUAD
button will toggle between alternate quad pages (cameras 1
thru 4, and then cameras 5 thru 8).
5.2.4 ARROW Buttons
Used to select an 'active' quadrant on the MON-A monitor.
Each arrow button is mapped to a quadrant on the screen,
and will alternately select the two cameras associated with
that quadrant.
In the MON-A monitor display, the operator can operate
on either the full screen display, or only on individual
quadrants of the display. To operate on individual quadrants
in the quad display, an active quadrant must first be selected
by the operator from the four displayed images.
Active Quadrant Selection
If any of the arrow buttons are pressed while the MON-A
monitor is in quad display mode, an active quadrant is
indicated in the corresponding quadrant of the quad display.
The active quadrant is indicated by flashing the camera
number and title of the camera in that quadrant. Adjacent
quadrants can be selected as the current active quadrant by
pressing the appropriate arrow buttons. If no further
buttons are pressed, the active quadrant mode will
automatically time out. While the active quadrant indication
is active, buttons like SEQ, FREEZE and ZOOM will affect
only the active quadrant, as opposed to the whole page of
the quad display.
Active Quadrant De-selection
The active quadrant display indication stays visible for
approximately 5 seconds after the last keystroke, after
which it is automatically reset and the unit reverts to quad
mode.
Pressing the QUAD button at any time will exit the active
quadrant mode.
5.2.5 ZOOM Button
Operates only on the MON-A monitor. Used to switch
from quad displays to full-screen displays on the Quad
monitor, and also to zoom the full-screen displays.
Full-screen Display Selection
If an active quadrant is first selected, displays the
corresponding camera full-screen.
If no active quadrant is selected, it operates on the last
active quadrant that was selected for full-screen display.
Once in full-screen mode, the arrow buttons will switch to
alternate full-screen views.
5.2.6 Zoom Mode
Zooms a full-screen camera display using a digital 2X Zoom.
Zooms the VCR display on the MON-A monitor.
If a display is already zoomed, then pressing the ZOOM
button toggles the display back to full-screen.
The indicator 'ZOOM' is displayed if an image has been
zoomed.
Once a full-screen display has been zoomed, the arrow
buttons can be used to continuously pan and tilt around the
zoomed display. Note that frozen full-screen images cannot
be zoomed. However, zoomed displays are fully interlaced
and can be frozen at any time.
5.2.7 VCR Button
Selects for display on MON-A and MON-B the video
source that is connected to the "VCR" BNC on the rear
panel.
If the source is playback from a time-lapse VCR,
playback speed must be in the 2 hour mode for
proper operation.
For best performance, when using the "VCR" input
selection, it is recommended that both record and
playback of the quad video be in the 2 hour mode.
Initiating VCR Playback Mode
VCR playback is initiated by pressing the VCR button on the
front panel, which will route the VCR input to both the
MON-A and the MON-B monitors.
During this mode the text "VCR" is displayed on the
monitors. The MON-A monitor can be used to display live
playback images, frozen images or zoomed images of one
quadrant of the playback.
Freeze During VCR Playback
To freeze or unfreeze the display at any time during VCR
playback, press FREEZE. The text "FRZ" will indicate that
the image is frozen. Zoomed images can also be frozen.
The use of the VCR's PAUSE button can also freeze the
image being displayed. Using the pause feature of the VCR
will stop video update as the image is frozen, allowing for
greater control of the playback.
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