1.14
6.2.4
Manual Switching
n
Press the
1, 2, 3,
or
4
key to select manual switching. The
selected quadrants will be displayed in full screen mode.
The camera title of the selected quadrant is displayed in the
center of the monitor screen.
If the Quad unit is operating in the VCR or programming
mode, you can not use manual switch mode.
6.2.5
Quad Display
n
Press the
QUAD
key to display all four camera inputs on
the system monitor screen. Each quadrant displays the video
from its respective camera. The four quadrants are separated
by a black border.
1 The titles of the camera 1 is displayed in the bottom
right corner of the screen.
2 The titles of the camera 2 is displayed in the bottom left
corner of the screen.
3 The titles of the camera 3 is displayed in the upper right
corner of the screen.
4 The titles of the camera 4 is displayed in the upper left
corner of the screen.
6.2.6
Alarm Function
When an alarm input is generated, the relevant camera image
appears as a full screen image and the message "
*ALARM*
"
flashes on screen.
For a generated alarm the sequence of operation is:
1 MON output and VCR output are changed to display
the full screen image of alarmed channel.
2 The message "
*ALARM*
" flashes on the screen.
3 If a second alarm input is generated, each alarm screen
appears for 2 second in turn. You can hold the required
alarmed image by pressing one of the alarming channel
keys (
1~4
). To disable the holding alarmed channel,
press the alarming channel key again.
4 The alarm audible beeper is activated, (If BEEPER status
is "ON").
5 The alarm output (Relay Output, Trig Output) is
activated automatically.
To reset the activated alarm:
n
Press the Camera (
1, 2, 3, or 4
) key, then the
key.
The duration of the alarm mode is determined by one of these
conditions:
1 If the duration of the alarm input is less than Alarm Dwell
Time, the unit remains in the alarm mode for Alarm Dwell
Time.
n
Press the alarm camera key, then
key to cancel
the alarm instantly.
2 If the alarm persists for more than Alarm Dwell Time, the
unit remains in the alarmed state as long as the alarm is
active.
n
Press the alarm camera key, then
key after the
alarm is ended.
3 If an Alarm Dwell Time is set to
HOLD
mode, the alarm
remains active until the alarm is reset.
n
Press the alarm camera key, then
key to cancel
the alarm.
4 If an Alarm Dwell Time is set to
FOLLOW
mode, the
alarm remains active until the alarm is reset.
n
Press the alarm camera key, then
key to cancel
the alarm.
6.2.7
Video Loss Alert
The LTC 2376 and LTC 2377 may be programmed to produce
an alarm if the video signal to any of the four camera channels
is lost. (Note: Video Loss Alert must be “ON” for respective
channel). A loss of video produces the following effects:
1 The monitor screen is changed to QUAD screen image and
the message
VD LOSS
displayed on screen.
2 The VCR output changes to the same status as monitor
display.
3 If BEEPER status is "ON", the alarm sound is activated and
the alarm output (Relay out, Trig out) is active for alarm
dwell time.
n
Press the
key, the alarm is acknowledged but the
VD LOSS
remains on screen until the video input is
restored.
6.2.8
Dry Contact Remote Control
Both operation and programming may be controlled by the dry
contact remote control. All procedures are identical to those
carried out by the front panel controls on the LTC 2376 and
LTC 2377.
6.2.9
Computer Remote Control
The LTC 2376 and LTC 2377 use a very simple command set,
each command consisting of three characters. The first character
in all cases is the slash or virgule(/). The unit looks only for a
three-character command, with an initial slash. It ignores all
other characters. If a mistake is made in entering a command,
just type in another slash character followed by the appropriate
characters for the desired command. The commands are listed
in the Table - RS-232 Commands.
ALM ( )
ALM ( )
ALM ( )
ALM ( )
ALM ( )
ALM ( )
