66251980 - V1.2 - 31/07/21
- 5 -
Kristallo Series
Art. KRV72 - KRV74 - Installation instructions
VIDEOMONITOR ADDRESS SETUP SW1
Each videomonitor must be address is binary (PHONE ID) using the 8 way dip switches located on the rear of the unit. Each switch
correspond to one bit which can have a value 0 (OFF) or 1 (ON). Each bit corresponds to a decimal weight depending on the posi-
tion: Switch 1 = decimal 1, 2=2, 3=4, 4=8, 5=16, 6=32, 7=64, 8=128. I.E. to set the address 37, put switches 1, 3 and 6 on (1+4+32=37).
SWITCHES
DECIMAL WEIGHT
ADDRESS
8
7
6
5
4
3
2
1
128
64
32
16
8
4
2
1
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
0
0
0
0
0
0
0
1
1
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
0
0
0
0
0
0
1
0
2
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
0
0
0
0
0
0
1
1
3
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
0
0
0
0
0
1
0
0
4
OFF
OFF
ON
OFF
OFF
ON
OFF
ON
0
0
1
0
0
1
0
1
37
ON
OFF
ON
ON
OFF
ON
OFF
OFF
1
0
1
1
0
1
0
0
180
VIDEO MODE SW2
The video mode setup is carried out by
the 4 way Dip-Switch accessible from the
rear side of the videophone.
Switches 3 and 4 adjust the video sig-
nal impedance. When using more than
one videomonitor in parallel (without
a video splitter) put both switches in
the OFF position on all but the last vid-
eomonitor (end of line).
VIDEO MODE
Switches 1,2
Mode
ON
1 2
3 4
Coax
ON
1 2
3 4
Balanced
75 OHM VIDEO TERMINATION
Switches 3,4
Termination
ON
1 2
3 4
Enabled
ON
1 2
3 4
Disabled
CONNECTION TERMINALS SIGNALS
DOL
12Vdc input to supply “door open” LED
SB
Open collector output (active low) for service call
button. When the monitor is switched on, press
the
button until the service is enabled. Once
enabled the output remains active for the pro-
grammed time.
50mA 24Vdc max.
AL
Active low input for alarm signal. When active, the
system sends the alarm to the concierge if installed
and enables the Art. 512DR if installed and properly
configured for the alarm management.
LB
Active low input for local call “Local Bell”.
L
BUS DATA line input.
–
BUS Ground line input.
12VIN
Stand-by +12Vdc power supply input.
12VOUT
+12Vdc stabilized output.
GND
Power supply ground input / coax video ground.
V2
Balanced video signal V2 sync.(balanced video signal
mode) Composite video signal (coax video signal mode).
V1
Balanced video signal V1 sync.
+20
+20Vdc power supply input.
+VD
+12Vdc power supply output for video distributor
Art. 894/894N
NOTE
When a short is made between a 12Vin and a 12Vout , an addi-
tional Art. 893N1 is required for every 50 videophones installed
in the system.
TECHNICAL SPECIFICATIONS
Housing and mounting:
Kristallo 3.5” Series
Surface (Art. KRV72)
Flush (Art. KRV74)
Touch sensitive
backlight buttons:
8
Programming:
Through buttons and dip-switches
Controls:
Speech volume
Brightness
Hue
Power consumption:
Stand-by:
6 mA (on 12Vin)
Operating:
200 mA
Peak:
250 mA
Working voltage:
17-20Vdc
Working temperature:
-20 +60 °C
Art. KRV72-KRV74
3.5” Hands free videomonitor
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