3 ELEMENTS OF ENTRY PHONE
In case of necessity to distribute signal between more branches, signal distributor
CVR-x should be used. The change-over switch is fed from the electronic cassette
(V and G), and does not require any separate feeder. The command
signal to control the change-over switch is supplied to the input CS. The change-
over switch performs simultaneously a function of amplifier and signal correction
scheme. Switching the correction scheme on and amplification rate for both outputs
X and Y are determined by the position of jumpers set on the junction JP3. The
commutator includes junctions with jumpers enabling setting of input and output
impedance for a given commutator (see page 21).
Module MRL-1
Module MRL-1 is used with doorphones in multi-entrance version. This module
is used in order to connect several panels to one electronic cassette. In case of
the doorphone system CD-3100 with one entrance, it is possible to connect panel
directly to the electronic cassette. Installation of next panels requires application
of MRL-1 module.
Power supply
Ac power supply adapter ZS-K-25/01 art.0018 or TSZZM 25/021M should be
used for supplying electronic cassette.
In CD-3100 system one external panel and one electronic cassette can be together
fed from this power supply. The other panels must be fed from the local feeders.
To supply external panels it should be used stabilized feeders 13,5V DC/1A.
Electro-catch
In case of entry phone CD-3100 it is recommended to use electro-catches for
a voltage of 12V AC/DC and current consumption not exceeding 1A. Action time
is subject to programming and may be changed by the fitter.
Doorphone CD-3100 does not operate electromagnetic locks.
Door opening pushbutton.
This push-button is used to unblock electro-catch when leaving the object e.g.
in the situation, when on the door or wicket from its inside no handle has been
mounted but only knob.
The push-button can be any coupling push-button e.g. bell-push or robbery push-
button in emergency systems.
Additional call module PW-1
The module enables an additional call signal (acoustic or optical) in the uniphone.
It is used in a situation when a uniphone is installed in a room of high noise level or
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