Monitor Operation | Philips TC8278, TC8277, TC8275 specs

5.2Monitor Operation

5.2.1Monitor 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.

5.2.2Mon-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.

5.2.3QUAD 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).

5.2.4ARROW 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.

5.2.5ZOOM 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.

5.2.6Zoom 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.

5.2.7VCR 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.

TC8275, TC8278, TC8277 specifications

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