Philips LTC2377/50 Installation Instructions Manual page 6

4.2 LTC 2376 and LTC 2377 Connection
REMOTE
GND
Item VidQuad Digital Processor
Video Inputs
Camera 1 Video Input 1 - BNC
Camera 2 Video Input 2 - BNC
Camera 3 Video Input 3 - BNC
Camera 4 Video Input 4 - BNC
Video Outputs
Main Monitor Video MON - BNC
Quad Monitor Video VCR OUT - BNC
Loop-through 1 Video Output 1 - BNC
Loop-through 2 Video Output 2 - BNC
Loop-through 3 Video Output 3 - BNC
Loop-through 4 Video Output 4 - BNC
VCR Out VCR IN - BNC
VCR In VCR OUT - BNC
Alarm In
Alarm 1 ALARM IN Pin 1
Alarm 2 ALARM IN Pin 2
Alarm 3 ALARM IN Pin 3
Alarm 4 ALARM IN Pin 4
Common ALARM COM
Alarm inputs are Class 2 input only.
Alarm input cables must be shielded, and the shield must
be grounded.
Notes:
1. The LTC 2377 provides a COLOR Adjustment menu to
assist initial monitor adjustment.
2. If the video line ends at the system monitor, set the
monitor's termination switch to 75 OHMS. If the video is
looped through the monitor to some other item of
equipment, set the monitor termination switch to HIGH Z
or HIGH IMPEDANCE. The last video in the line must be
terminated with 75 ohms.
3. If the video is to be looped out to other equipment, make
sure that the final item of video equipment on each line is
terminated with 75 ohms.
ALARM OUT
ALARM IN
1 2
3 4
MON
NCCOMNO G S
COM 1 2 3 4
RELAY TRIG
Fig. 5: LTC 2376 and LTC 2377 connection
(1)
(2)
(3)
(3)
(3)
(3)
(4)
(5)
(5)
(5)
(5)
IN
1 2
VCR
OUT
Item
Alarm Out
VCR Alarm
Trigger Out
Remote
Pin
1
2
3
4
5
6
7
8
9
10-15
RS-232 protocol
Data rate
Data bits
Parity
Stop bits
4. The VCR can be connected to the unit to allow it to
respond to alarms.
5. Do not apply any voltage to any alarm input. It will damage
the unit.
6. Set the host computer to the half-duplex mode.
The LTC2376 and LTC 2377 does not echo received
characters.
1.6
3 4
VidQuad Digital Processor
RELAY NO (or NC)
RELAY COM
TTL OUTPUT
Function
VCR
Menu
SEQ/ ALM ( )
Camera 1/Menu scroll
Camera 2/Menu scroll
Camera 3/Menu scroll
Camera 4/Menu scroll
/
Received
GND
(6)
1200 baud
8
None
1
key
key
<
key
>
key