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AS-TVHa-1/1 DoorCom Analog
DCA 650-...
Mode of operation
Calling and speech between the
door station and the connected a/b
telephones of a telephone system.
The DoorCom-Analog DCA 650-02
is able to forward the call from up
to 31 bell buttons to a telephone
system. The DCA 650-02 calls the
PBX extensions of the telephone
system using dual-tone multiple
frequency dialling DTMF. Audio and
video privacy of existing calls from
other telephones is assured.
The function for door release and
light switching via DTMF symbols is
possible at connected a/b telephones
in the telephone system.Connection
of other bus telephones with colour
monitor when looping through from
one device to the next. Other bus
door loudspeakers with video are
connected with bus video
distributors BVVU 650-... or
BVVS 650-...
Supplementary functions
• Internal speech communication
possible between bus telephones
BTSV/BFSV/BTCV/BFCV 850-0.
• Connection of bus telephones
BTS/BFS/BTC/BFC 850-... or devices
for switching and control functions
via bus audio decoupler BAA 650-...
For more information, see chapter 6,
page 54-55.
• Switching and control functions
possible with bus switching modules
BSM 650-..., BSE 650-... and
BEM 650-... , feedback to bus tel-
ephones BTC/BFC/BTCV/
BFCV 850-... programmable via LED.
For more information, see chapter 8,
page 89-91.
• Bus secondary signal unit
BNS 750-... possible, chapter 8,
page 96.
• Parallel door and storey call
Up to 8 bus telephones with colour
monitor can be called simultaneously
via one call button. From the second
bus telephone, each bus telephone
must be additionally supplied at the
terminals +M/-M.
• Selective dialling of the door
station possible via additional free
buttons.
• Video memory function
possible with the bus telephone
BTCV/BFCV 850-..., additional instal-
lation required.
Remarks
a) The TR 603-... (12 V AC, 1.3 A)
can supply 1 door release button
and max. 16 bus call button mod-
ules with LED lighting (BTM 650-01,
-02, -03 and -04). With more than
16 illuminated bus call button mod-
ules, an additional TR 603-...
is required.
Current consumers in the AS dia-
gram: Door release appr. 600 mA
Camera heating 100 mA
DoorCom Analog 100 mA
with DCSF 600-... 200 mA
LED lighting per bus call button
module 20 mA
b) Door release contact load in the
bus video line rectier BVNG 650-...
max. 15 V AC, 30 V DC, 2 A.
• Light contact load in the bus video
line rectier max. 15 V AC, 30 V DC,
2 A.
c) Door release 12 V AC, use at least
20 Ohm, (e.g. TÖ 615-...), for pos-
sible connection variants see
chapter 8, page 92.
• Current consumption bus call
button module 20 mA at terminal
b/c.
d) Conductor length bus telephone -
storey call button ERT max. 50 m.
e) When using the internal video
memory module, the bus telephone
BTCV/BFCV 850-... must be supplied
by an additional direct voltage
(20 - 30 V DC, 350 mA).
NG 602-... or VNG 602-... can be
used for this purpose. Connection of
the supply at terminals +M/-M. For
more information, see
chapter 8, page 94.
g) The maximum distance of the
DCA 650-... from the TR 603-... is
20 m. With greater distances, an
additional transformer is required
for the DCA 650-... . If several
DCA 650-... units are used within a
system, each DCA 650-... must be
supplied by its own transformer.
Installation
In each bus telephone with colour
monitor, there is a terminating circuit
board connected in the as-delivered
status in the centre of the con-
necting terminals TaM and TbM.
This circuit board is an RC element
which comprises a resistor with
100 Ohm and a capacitor 1 nF.
When looping through from one
bus telephone to the next in the
installation, this terminating circuit
board must be removed. If, however,
bus distributors are used in the
installation, or if there is only 1 bus
telephone with colour monitor in
the line, the terminating element
remains in the bus telephone.
Terminal
BTSV/BFSV/BTCV/BFCV 850-...
Connection for one bus telephone
or the last bus telephone in the line.
Connection when looping
through from one bus telephone to
another.
Cable laying
Only signals from the In-Home bus
may be transmitted via the laid
conductor material. No additional
transmission is possible, for instance
to PBX extensions of a telephone
system or an S0 bus (ISDN). The
camera branch and monitor branch
must be laid in a separate cable
and must not be installed inside the
same conduit. This can result in dis-
turbance to the picture composition.
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