Specifications

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The TALK switches have two operation modes. When this switch is pressed quickly,
the microphone changes its state; if it was enabled, being pressed it gets disabled and
turns off the associated LED, and if it was disabled, being pressed it gets enabled and turns
on the associated LED.
When the TALK switches are pressed and held, the unit will enter in the
special function PUSH TO TALK; this means that the microphone will be enabled until the
switch is released.
CALL SWITCH
The base station is provided with one call switches per intercom channel. When one of
these switches is pressed a call signal is sent to the corresponding intercom channel. The
call signal makes the LED associated with the switch start blinking; if the buzzer is enabled
an intermittent sound takes place and the correspondent LED blink, during three seconds,
the same as in all the units (beltpacks, desk stations, master stations, etc.), connected to
the same intercom channel.
If the CALL switch is pressed continuously, the duration of the call signal will be higher
(the time that the switch is pressed, and approximately 3 seconds more).
If a call signal is generated in an external unit (beltpacks, desk stations, master
stations, etc.), the LED associated to the CALL switch of the channel in which the call signal
is received, will start blinking and if the buzzer is enabled an intermittent sound will take
place during about three seconds.
NULL CONTROL
The cancellation control (NULL) , eliminates the self microphone signal from the
listen signal, so that there are no unwanted coupling to the speaker or to the headset
Is designed so that approximately half of travel of the potentiometer produces the
microphone signal cancellation (i.e. we don’t hear us in the headphones), fully to the right or
to the left gives the maximum voice level, through all the level intermediate positions.
The base station unit has a cancellation control (NULL) for each channel, so you
should adjust it independently, activating only the microphone (TALK) and listen of
the channel you want to adjust. Then repeat for all the uses channels.
To hear your own voice in the headset , adjust the headset sidetone control .
LISTEN LEVEL CONTROL
The base station has a listen level control per intercom line, that allows us to adjust
the signal level of each line sent to the headset and speaker .
EF-202/EF-204 MASTER STATION – E200 SERIES
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