66250865-EN - V 3.4 - 31/08/16
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VK8K/6256 Series “6 wire Bus” videokit
VK8K/6256 Series - Installation handbook
Art. 8833
Speaker unit
JUMPERS J1, J2, J3
J1=
Reassurance tone volume = High
J1=
Reassurance tone volume = Low
J2=
Door open relay operating mode = Capacitor discharge
J2=
Door open relay operating mode = Dry Contacts
J3=
Only for Art. 8833-2, call buttons operating mode = each button calls a different videophone
J3=
Only for Art. 8833-2, call buttons operating mode = both buttons call the same videophone
When the door open relay operating mode is set to “capacitor discharge”*, one terminal of the electric lock must be connected to
ground while the second must be connected to “NO” terminal. The “NO” terminal will supply a temporary voltage when the speaker
unit receives the door open command.
* When “capacitor discharge” operating mode is set, one terminal of the electric lock must be connected to the ground while the
second one must be connected to “NO” terminal. The “NO” terminal will supply a temporary voltage when the speaker unit receives
the door open command (we suggest to use a 12Vac/dc 1A max electric lock). Setting “dry contacts” operating mode, when the
speaker unit receives the door open command, the “NO” terminal will be internally linked to the “C” terminal for the programmed
time (switch 4 of the 4 way dip-switch bank).
SIGNALS (TERMINALS)
NO
Door open relay normally open contact
Max 24Vdc, 3mA when used as dry contacts relay
NC
Door open relay normally closed contact
C
Door open relay common contact
PTE
Active low input to control directly the door open relay
SL
Active low output to enable the enslavement relay for video signal exchange (active with a call in progress)
BS
Input/Output busy signal (about 12V in stand-by, about 0V with a call in progress)
V2
Balanced video signal sync.+
V1
Balanced video signal sync.–
2
Speech line output from the microphone (about 12V in stand-by, about 3V with a conversation in progress)
1
Speech line input toward the loudspeaker and data signal (about 12V in stand-by, about 5V with a conversation in progress)
12Vout
12Vdc. 0,3A max. output to supply accessiories
–
Power input ground
+V
Power input 16÷20Vdc
TECHNICAL SPECIFICATION
Power Supply:
20Vdc
Power consumption:
Stand-by: 70mA
Operating:
250mA
Working Temperature:
-10 +50 °C
