Specifications

Schematic diagram:

System operation is strait forward. You can connect your headset , to any of

the bases. Microphone signal from the preamp out of the base #2 is directed to the preamp

input in base#1. Channel Mic A,B,C and D on/off switches from base#2 corresponds

now to channels E, F, G and H respectively. Listening from the eight channels are

controlled by local volume and listen level controls as depicted in this manual, A, B,

C and D on base#1 and E, F, G and H on base#2.

Call signalling , remote mic kill and buzzer kill are to be controlled on each

base independently.

Program input signal must be splitted to each base if needed.

PA outputs from the two bases must be combined externally by using an audio mixer

and then connected to the PA system.

These audio links allows advanced functionalities:

Mic link-Direct microphone out, Mic input from external equipment, etc.

EAR link-Listen connection to external powered speakers, cue input to the operator,

etc.

GENERAL PURPOSE INPUT / OUTPUT CONNECTIONS (GPIO)

EF-202/EF-204 base station, have two general purpose inputs and two general purpose

outputs allowing remote control from/to auxiliary equipment to/from the base station.

These GPIO´s employs standard connectors (3.5 pitch) Phoenix ™ type .

The inputs are logical, with an internal pull-up of 5 Volts and 100 KΩ, and therefore the

simplest assembly is a simple switch to ground. Assemblies can also be connected to an

open collector output.

EF-202/EF-204 MASTER STATION – E200 SERIES

1 2

12 7 10