Connection Of Intercom Systems With More Than 50 Beltpacks; Operation; Headset Connection - Altair EF-200 Owner's Manual

CONNECTION OF INTERCOM SYSTEMS WITH MORE THAN 50 BELTPACKS

It is possible connect two master stations (EF-200) in installations where it is necessary work
with more than 50 beltpacks (EM-201), with their lines in parallel (A with A and/or B with B), always
having the caution of opening the terminal impedance (in order to obtain more information,
consult the special operation section), of the secondary master station lines that serves us simply
how power reinforcement. In this type of operations, the master station unit is connected at the
beginning of the intercom chain, and the secondary unit at the end of this line, in this way, we will
reinforce the beltpack units power placed to the other end of the primary master station unit.

5. OPERATION

The E-200 series intercom system are designed to allow maximum easy communication
operations between the different control areas in music or theatre live performances, television,
cinema, conference halls, and whatever broad events where multiple and fast communications are
required, by means of its simultaneous listening-speaking operation system.
The EF-200 system master station provides two independent intercom channels, and the
capacity to feed up to 50 beltpacks (EM-201). Each channel provides a CALL switch, a MIC on/off
switch (TALK), a listen balance control allows to listen to the channels independently, or a mix
between the two channels.
The program input allows to insert external audio signals in the intercom system. The external
audio signals could be sent to each channel or to the headphones, independently.
The headset microphone signal is available to drive P.A. systems. Relay contacts are provided
that follows the P.A. key action, helping the installer to automate multiple tasks as Tally, switching
speakers, cue lights, etc.
System Expandability permits creating a multichannel (4, 6, or more channels) intercom System
by using more Master Stations in a daisy chain arrangement. This feature enables freedom in System
design and in-site future upgrades. Rental companies can benefit in lower component inventories.
The global all mic (Mic-Kill) and buzzers (Buzz-Kill) mute systems in both channels, allow to
control the line noise, as well as the ambient noise.
Our new internal Battery operation permits short-time communications in difficult situations ( =
no Power) of emergency..

HEADSET CONNECTION

A XLR-4 type connector (XLR-4-32) allows to connect a headset and a microphone to the
master station. The headset impedance must be 200 Ω or higher (up to 2 KΩ) and the microphone
must be dynamic or electret type.
The microphone preamplifier gain can be configured with an internal preset in +30 or +40
dB. (In the factory set-up the microphone preamplifier gain is adjusted to +40 dB)
For the electret microphone type it is necessary to enable the phantom power of 9 VDC with
an internal preset. In order to obtain more information, consult the special operation section.
The next list shows the XLR pins correspondence:
E-200 SERIES INTERCOM SYSTEM — EF-200 DUAL CHANNEL MASTER STATION
HEADSET - XLR-4-32
PIN 1
PIN 2
PIN 3
PIN 4
0 V (MICROPHONE)
SIGNAL (MICROPHONE)
0 V (HEADPHONES)
SIGNAL (HEADPHONES)
15