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SWITCHES TO GROUND
OPEN COLLECTOR
The general purpose inputs can control all the buttons on the base station, make a
general call to all lines, cause a Mic Kill or enable/disable the Buzzer Kill. By default the
base station is configured with input 1 as the PANEL MIC
button, and input 2 can cause
a general call (simultaneous CALL to CH A, B, C and D).
The outputs are open collector, so we can feed to other power circuits provided (50
Volts DC maximum). In the output connector is available a supply of 5 volts DC to power the
open collector circuit, this power is limited to 100 mA. The outputs can be connected to
LEDs indicators, DC relays, among others.
LED LAMPS
DC RELAY CONTROL
To general-purpose outputs can send the state of all buttons of the base station, the
general call to all lines, the Mic Kill or the Buzzer Kill. By default the base station is
configured with output 1 as the state of Mic Kill, and output 2 to the general call state.
The configuration of the general purpose inputs and outputs can not be done directly
from the base station front panel; instead it is necessary a USB connection to a PC running
the free Altair EF-204 control software. Configuration is saved on the unit.
SYSTEMS WITH MORE THAN 50 WIRED BELTPACKS
It is possible to connect two master stations (EF-202/EF-204) in installations where it is
necessary more than 50 wired beltpacks (EM-201), with their lines in parallel (A with A
and/or B with B and/or C with C and/or D with D), always having the caution of opening the
terminal impedance (in order to obtain more information, consult the terminal impedance
switch/selector section
), of the secondary master station lines that serves us simply as
intercom line 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 placed at the further positions. For this
purpose, it is also possible to use the Altair PS-200 power supply unit.
EF-202/EF-204 MASTER STATION – E200 SERIES
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