-4
Distribution
Amplifier
RVS
VG
+18
-18
VO
VG
V3
+18
VG
V1
V2
-18
-18
+18
V4
VG
VI
+18
-18
FA
LN
FB
FC
LN
FD
Commutator
-4
BK M
LINE
GND
SEL
Ek
7
6
Figure
Control Unit
with commutators
and distribution amplifier
in a multi-apartment video doorphone
6 -
BUD
BK-4M
RVS-4
-420М
1
2
3
4
LN-
GND
LN+
VI1
+E
GND
VIZIT-M430C
Monitor
LINE
GND
SEL1
Ek
USE
Evk
GND
GND
SEL0
1 2 3 4
6 7
5
LN-
GND
LN+
VI1
+E
GND
VIZIT-M430C
Monitor
To next commutators and
distribution amplifier
RVS-4
Apartment
Handset
UKP-12(M)
+
-
-12(M)
Apartment
Handset
UKP
To power
supply unit
To power
supply unit
LN
FD
+
-
LN
FC
V4
VG
VG
V1
VG
V1
V4
VG
LN
FC
LN
FD
FA
FB
LN
FA
LN
FB
82
and
terminals of the last
-Ohms resistor shall be connected between
in the circuit
VO
VG
RVS-4
See Fig.1-3
Control Unit
BUD-420M
Doorstation
-431DXKCB
(
-432RCB)
BVD
BVD
The
terminal of commutators
connecting apartment handsets /
monitors from apartments with
hundred shall be wired up
to the circuit connected to the
terminal of
If there are total 100 apartment
handsets / monitors or less, the
and
terminals of
shall be shorted.
SEL
odd
SEL1
BUD-420M.
SEL0
SEL1
BUD-420M
9