Operating Notes - Comelit MT SB2 01 Manuel Technique

OPERATING NOTES

• When the visitor presses the call button the bell of the internal unit
is activated.
• There is a reassurance tone for the call having been made at the
external unit. If the call confirmation tone is not heard in systems
with several entrances, it means that another conversation is
taking place with another external unit installed on the same riser.
In the case where Art. 3346 - system engaged signalling module -
is installed, wait until the module turns off before making the call
again. In the case where Art. 3340 is installed, indication of the
system being engaged is shown on the display.
• At the internal unit, communication takes place by lifting the
handset.
• The button marked with the key symbol acts on the electric lock
of the external unit, activating it for about 2 sec.
• By pressing the call button on the external unit in video door entry
systems, the infrared LEDs (not visible to the human eye)
for illumination of the caller light up. The image remains on the
monitor for about 90 sec.
• See page 28 and 29 for microphone volume and call tone volume
adjustment of the telephones.
• See page 24 and 25 for call tone volume adjustment of the monitor.
• See page 32 for adjustment of audio volumes on the external unit.
• To enable the Self-ignition function, it is necessary to keep
push-button 2 pressed for more than 2 sec. (see variant H on
page 111). A confirmation tone is heard on completion of setting.
• Monitor Self-ignition (if the function has been enabled) takes
place by pressing push-button 2. In the case where two external
units are installed, by pressing push-button 2 of monitor
self-ignition in succession, there is the possibility of displaying
first one image and then the other of the two external units
on the monitor (alternating function between two entrances).
• To vary the brightness of the monitor, use the adjustment wheel
at the bottom.
• To vary the call tone volume, use the special graduated deviator
located on the bottom of the monitor.
• It is possible to set the Privacy function with optional card
Art. 4703. By pressing push-button 4 of the monitor for more than
2 sec., the LED signalling that the monitor has been set on
Privacy lights up (see variant I on page 112). On privacy, the
monitor does not ring, it lights up and in any case there is the
possibility of going into audio with the external unit after the call.
• By replacing the handset of the internal unit, you have a few
seconds to replace the audio with the external unit.
From the moment of hanging up, a few seconds pass before
the image disappears from the monitor.
• The monitor set as Main (factory setting of bracket Art. 4714W/2)
lights up on a call and on self-ignition even if it is inserted
as additional monitor with same user code.
• The monitor set as Secondary (see variant SB2/A1-A2) does not
light up on a call, but there is the possibility of self-ignite it by
pressing push-button 2 (video request function).
In that case, there is no possibility of self-ignite the monitor.
Notice the difference between self-ignition, i.e. lighting up
of the monitor with the system free with the possibility
of alternating the image between two external units and the video
request only active after a call.
• Monitor and telephones with same user code all ring at the same
time (regardless of whether they are main or secondary) on a call
from the external unit and on a local floor call.
MT SB2 01
43 MT SB2 01