7
HEADSET CONNECTION
A XLR-4 type connector allows to connect a headset and a microphone to the desk station. The
headset impedance must be 200
Ω
or higher (up to 2 K
Ω
) and the microphone must be dynamic or
electret type.
For the electret microphone type is necessary to enable the could enable the phantom power
of 9 VDC with a dip-switch placed near the plastic belt clip. In order to obtain more information,
consult the special operation section.
The microphone preamplifier gain can be configured with a dip-switch placed near the plastic
belt clip in +30 or +40 dB. (In the factory set-up the microphone preamplifier gain is adjusted to +40
dB). In order to obtain more information, consult the special operation section.
The next list shows the XLR pins correspondence:
HEADSET XLR
PIN 1
0 V (MICROPHONE)
PIN 2
SIGNAL (MICROPHONE)
PIN 3
0 V (HEADPHONES)
PIN 4
SIGNAL (HEADPHONES)
NOTE:
Headphones can be with a double or single muff. In case of using a double muff
headphone, the two speakers should be wired in parallel mode.
MIC ON/OFF/PUSH TO TALK SWITCH
The ES-200 dual channel beltpack unit is provided with two talk switches, one per
intercom channel. The TALK switch allows to enable/disable the microphone; that way,
we can speak with other units connected to the same intercom channel. If the channel A
microphone isn’t activated (for example), and the channel B microphone is activated, we
will speak with the stations connected to the channel B, but the connected stations to the channel
won’t hear us.
If the microphone is activated, its associated LED will light up, and on the other hand, if it is
disabled, its associated LED will turn off.
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.
The unit provides a MIC-KILL (turns off the MIC) system, so that when the mic is enabled it is
possible to muted it by the MIC-KILL function of the master station ALTAIR EF-200.
BUZZER ON/OFF SWITCH
This switch enables/disables the buzzer sound when the unit receives a call. When
this switch is pressed, and the buzzer is enabled, it will be disabled, and the LED indicator
will turn off. On the other hand, if the buzzer was disabled, it will be enabled and the LED indicator
will lighten up.
The buzzer sound is different when a call from the channel A is received that when it is
received from the channel B, as well as when a simultaneous call from both channels takes place.
The buzzer also sounds when any switch is pressed, emitting a short hoot.
The unit provides a BUZZER-KILL (turns off the BUZZER) system, so that when the buzzer is
enabled it is possible to muted it by the BUZZER-KILL function of the master station ALTAIR EF-200.
DUAL CHANNEL BELTPACK EM-202
