urmet domus 1145/1, Руководство пользователя

Страница: 6 / 24

6 DS1145-019A
Other possible settings
If the speech signal level coming from the door unit is too low in the phone, set the MIC trimmer clockwise
until the result is good.
In case of Larsen effects problems, set the MIC anticlockwise to reduce the door unit microphone
sensitivity.
If the speech signal level coming from the phone is too low in the door unit loudspeaker, set the SPK
trimmer until the result is good.
If the speech signal coming from the door unit speaker is distorted or too high, set the SPK trimmer
anticlokwise to reduce the speaker volume.
Only if results are not good enough after setting the trimmers (input and output signals balancing) slightly
set the TRH trimmer clockwise.
Note: In case of TRH trimmer adjustment, a new setting of MIC and SPK trimmer could be requested, as
shown in the previous points .
1145/4 and 1145/144 modules with 4 buttons
This module is available in two versions. The Ref.1145/4 module has four buttons and it is provided with
the circuits used to connect it to the 1145/1-2 basic module or to a 1145/4 previous module. This module is
connected only with the provided cable; buttons and relative lighting are already interconnected with this
cable. The connection with the cable is facilitated by the terminal pins that prevent the wrong insertion, but
it is necessary to respect the connection direction to the base and to the buttons module.
The
1145/14 module is always connected to the previous 1145/4 ; the connection to this module must be
done with wires, that must be provided in the system (see system diagram).
Fig. 3 1145/4 and 1145/14 connection
1145/4
1145/14
1145/4
1145/14
1145/X
Connection with flat
cable to 1145/X
Connection with flat
cable to 1145/4
1145/14
1145/4
1145/84
To 1145/4
To
1145/X
4 buttons connection
and common (GND)
Two wires
connection for light
power supply
Alternative
connection for light
power supply