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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.
SIDETONE CONTROL
The sidetone control adjusts the level of your own voice as you hear it in your
headphones. It is designed to make approximately at the potentiometer halfway travelling
the maximum cancellation of your own voice (that is to say that you won't hear your voice
through the headphones), totally to the right or to the left giving the maximum level of voice,
passing through all the intermediates level positions.
The master station unit has two sidetone controls, one for each channel. It is necessary to
adjust each sidetone control independently, disabling a channel and adjusting the other and vice
versa.
LINE A AND B LISTEN BALANCE CONTROL
The listen balance control between lines A and B allows to adjust the signal
mix of both channels that appears in the headset of the main station. Totally to the
left, the signal that appears in the headset is only the channel A signal, totally to the
right, the signal that appears in the headset is only the channel B signal, centered it
appears a mix between both channels and in intermediates positions, it adjusts the
level that we want to listen of each channel.
PROGRAM INPUT LEVEL CONTROL
The program input level control adjusts the signal level sent to the channels A and
B of the program input signal (the signal introduced by the program input connector
XLR-3-31 placed at the rear panel). Next to the program input level control is marked the
position in which the gain is 0, that is to say the same signal as in the input. Totally to the
left the signal decreases in 10 dB and totally to the right the signal increases in 20 dB.
Keep in mind that these gains are influenced by the position of the program input
MICRO/LINE switch selector (placed at the rear panel), becouse if this switch is in mode micro, we
have 30 dB of additional gain.
PROGRAM SENDING TO LINES A/B SWITCHES
The program sending to lines A/B switches injects the program signal in the
corresponding channel (there is a switch for each channel) and all the units connected
to the corresponding channel will listen the program signal.
PROGRAM TO HEADPHONES CONTROL
The program to headphones control allows to regulate the program signal level that
appears in the headsets connected to the master station unit EF-200, independently if the
program sending to lines A/B switches is pressed or not. Keep in mind that if the program
input signal is sent to the lines, the signal sent directly to the headphones directly will be
added to the signal sending directly to the lines (attenuated by the sidetone control, previously
explained).
LINES A AND B LINK SWITCH
The lines A and B link switch allows to join the two channels, so that the same signal
appears in both channels. If the channels A and B are linked, the units connected to the
channel A can communicate with the one connected to the channel B and vice versa, and
the calls carried out in any channel will arrive to all the units connected to both channels.
E-200 SERIES INTERCOM SYSTEM — EF-200 DUAL CHANNEL MASTER STATION
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