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Next camera input
When closing the contacts of the next camera input
(fig. A-2), the system switches to the next available
camera (for future use).
Doorbell
When the doorbell button on the optional intercom box
is pushed, a buzzer will sound at the monitor, after which
the picture will be switched to the corresponding
camera. tf the automatic camera sequence is active, it
will be stopped. If the system operator does not react
within 1 minute to the warning signal by pushing any
button, the monitor will return to its previous status, or
the automatic camera sequence will continue.
Alarm
An alarm will sound if:
e there is a break in the camera line.
e this is detected by a camera alarm input or by an
alarm box (optional).
When an alarm sounds:
1) The system automatically switches to the
corresponding camera input.
2)
The corresponding camera LED will start to blink.
3) The built-in alarm buzzer will be audible for 15
seconds.
4) The alarm contact (fig. A-2) is changed over for 3
minutes. The alarm contact can activate a video
recorder, siren or telephone selector.
:
Alarm programming
If required, an alarm box in a particular camera line can
be disabled. This may be necessary to disconnect the
alarms of a door contact or movement detector during
the daytime. However, the cable detection remains
active at all times.
Push and hold the auto button together with the VCR
button.
The camera LED's on the monitor, the alarm function of
which is active, will light up. The auto LED will blink fast.
Push the corresponding camera selection button, the
alarm of which has to be switched on or off (LED on =
alarm on; LED off = alarm off).
If all camera lines are set, programming can be ended
by pushing the auto button. The monitor will return to
the status it had before programming.
Automatic alarm termination
After 3 minutes the monitor returns to the status it was in
before the alarm was sounding.
If the automatic camera sequence was active, it will be
continued. However, the corresponding camera LED
remains flashing for as long as the alarm line is active
(alarm detector is still active) or the camera line is still
cut.
Premature (within 3 minutes) alarm
termination
The alarm output (fig. A-2) will be de-activated by
switching off the aiarm. See alarm programming above.
Pressing any key on the control panel of the monitor
within 15 seconds will end the alarm sound only.
Alarm priority
A new alarm always gets priority. The monitor will
always switch to the camera of the last-received alarm
but the LED(s) of each previously received alarm blink
faster.
| Tips for maintenance
Ventilation
Avoid overheating the system monitor by ensuring to it
that the ventilation openings on the top of the monitor
remain uncovered. Do not place the monitor in the
immediate vicinity of a source of heating.
Cleaning
You can clean the system monitor with a moist, fluff-free
cloth or chamois leather cloth.
The outside of the camera can be cleaned with a moist,
fluff-free cloth or chamois leather cloth.
When cleaning the objective a special lens cleaning cloth
should be used. Do NOT use cleaning fluids that contain
alcohol, methylated spirit, ammonia, etc..
Avoid direct contact with water.
CL 76610015_004.ai
Figure D
The technical data of the system cable is as follows :
- system cable (2x2x0,5).
- Basic attenuation, loop resistance 16 Ohm (100 meter).
- Matching impedance 120 Ohm, >10 kHz
- Attenuation (for 100 meter) 5 dB for 5 MHz + 20%
2 OB for 1 MHz + 20 %
- Signal to noise ratio, 0,1 to 5 MHz >50 dB
- Cross talk in pair: 5 MHz > 46 dB / 100 meter.
50 kHz > 70 dB / 100 meter.
PCS 97 075 GB
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