4.
11
(MT13 - En 2015)
4
SW1
J2
J2
3
3
2
2
1
1
12
34
ON
LED
J2
3
2
1
SERVICE MODULES
DM2421.
In DUO digital system the DM2421
line distributor allows the selective sending of
the video signal, coming from the door stations,
to the videointercoms connected to line L1 or
L2, according to the addresses programmed
in the device; audio and call signals, on the
contrary, are delivered to all the devices con-
nected to the lines without considering their
address. The LED, present in the device, turns
on the switching and for all the time of activation
of the DUO system.
Technical features
Power supply from the line
Stand-by current:
8mA
Operating current:
50mA
Housing:
122x68x25mm
Operating temperature:
0° ÷ +50°C
Maximum humidity acceptable:
90% RH
Fits on DIN bar or with 2 expansion plugs
Terminals
LP - LP Line input
L1 - L1
Line output 1
L2 - L2
Line output 2
DISTRIBUTOR OF RISERS
PROGRAMMING
Preliminary notes
To manage videointercom addresses
connected to the line L2 are available 10
numerical intervals (F1÷F10).
In each numerical interval can be stored the
address of a single device or the first and the
last address of a group of videointercoms, with
sequential addresses. For example, if in the
numerical interval F1 is stored the address
100, on the line L2 only the video signal of the
call addressed to the videointercom 100 is
delivered. Vice-versa if on the same numerical
interval F1 are stored the addresses 100 and
120, on the line L2 are delivered the video
signals of the calls addressed to all the
videointercoms whose address is between 100
and 120. The addresses not included in intervals
F1÷F10 are forwarded to line L1.
Attention: if during the programming some
error are made or if later it is necessary to
modify some addresses already stored in
the memory, it is necessary to erase the
whole memory of the device executing the
“memory erasing“ procedure and than repro-
gramming completely the device.
Programming the numerical intervals
To program the numerical intervals F1÷F10 it
is necessary:
1) enter the programming mode moving the
jumper J2 from position 1-2 to 2-3; the red
LED flashes quickly;
2) select the numerical interval to be
programmed, positioning the micro
switches of SW1 according to the
instructions provided in table 4.4 on page
4.12.
For example, to program the interval F1,
set to ON micro switch 1 of SW1 leaving
OFF micro switches 2, 3 and 4;
Programming mode
2-3 position
(Red LED flashes quickly)
Operating mode
1-2 position
(Red LED flashes slowly)
Position of J2’s jumper and related function
25
4
"
16
/
13
122
1
2
"
16
/
11
68
"
SW1
1
2
3
4
ON
J2
3
2
1
J3
83
L2
L1
LP
INSTALLATION
1
rt
riser
2
nd
riser
last riser
DM2421
DM2421
L2
L2
L2
L2
LP
LP
LP
LP
L1
L1
L1
L1
DUO line
SW1
J2
3
2
1
4
3
2
1
ON
ON
OFF
4
3
2
1
ON
3) store the address of the internal station by
following the procedure described here
below.
- Videointercom Zhero, myLogic: press
the button
- Videointercom Echos, Exhito: press the
button
.
- Intercom Exhito: pick up the handset,
press the button
, hang up the handset
In case you wish to program a group of
addresses, store the address with the lowest
value first.
If the final group address also has to be
programmed in the interval, continue with
step 4; if, on the other hand, only one
address needs to be programmed, move
on to step 5.
Notes.
- Proper storage is indicated by the
distributor LED turning off for one second
and then turning back on in flashing mode.
- Possible audio noise signals in this
phase don't notice any anomaly in the
programming.
4) From the internal station, having the user
address with the highest value, store the
address following the procedure of the
selected model. The device acquires the
address of the last internal station belonging
to the group, allowing all the extensions
programmed in interval F1 to connect to the
L2 line.
