Farfisa AD2121CAG series, Техническое руководство

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2.
4
(MT13 - En 2015)
Audio adjustments
Audio level and ringtone volume can be adjusted during conversation by
means of special controls (see chapter \ on page 2.11). Normal audio
levels are set in the factory; settings on the back of the device must be
changed only if really necessary.
Setting the sound levels.
- If audio is excessively intermittent during the conversation or the
speaker tends to distort it during the call, it is recommended to slightly
change the microphone sensitivity using the SENS trimmer on the
back of the video-intercom.
- In case of problems in getting the audio in one of the two directions,
slightly increase the level of the disturbed channel and decrease the
level of the other channel using the
VOL trimmer for the micro-
phone volume.
LM A1 GC GN GE LM
2 1 3 4
J1 J3
3 2 1
J1
1 2 3 4
VOL
Selecting the closing impedance
The jumper J1 provided on the back of the videointercom can be used
to adjust the video signal coming from the riser and thus improve the
quality of the image displayed.
1-2
termination 100
Ω Ω Ω Ω Ω
(default)
2-3
termination 15
Ω Ω Ω Ω Ω
3-4
open line
LM A1 GC GN GE LM
2 1 3 4
J1 J3
3 2 1
SENS
VOL
Adjusting microphone sensitivity
Adjusting microphone level
MAIN FUNCTIONS OF THE KEYS
The 6 keys on screen side and the wheel sensor allow the user to access
the operating modes, setup and programming pages of the
videointercom; these keys modify their function according to the
indications shown on the screen.
The “ ” and “ ” keys are dedicated to videointercom functions.
Warning. A dissuasion tone and the Farfisa logo flashing when any of
the keys is pressed, warn the user that the function is not available
because the service is not active or the videointercom line is being
used by other users.
It enables:
- monitor of external video door
stations (or the last active station
if there are several entrances);
- voice communication after hav-
ing received a call or monitoring
function;
- closing the communication with
the external door station. The con-
versation also ends when the
conversation time of the monitor
or the system expires.
Every key , , , ,
and enables the function shown
on the screen and varies according to
the operating state of the videointercom.
It enables operating
the electric door lock
of the entrance in
communication or the
last entrance which
has made a call.
Rotary for selecting or
searching and
subsequent touch to
confirm.
The Zhero videointercom uses a freeRTOS operating system
(http://www.freertos.org).
Sounds and ringtones by:
http://www.freesfx.co.uk
http://www.audionatix.com
For further information visit: www.acifarfisa.it
mail: info@acifarfisa.it
INTERNAL STATIONS