User Guide

34
MIDAS
XL431
OSC
ON
PINK
100
300
1k
level
external
freq
TALK
TALK
TALK
TALK
TALK
TALK
to auxes
to groups
to right
to mono
to left
to matrix
ON
LINK
talk
level
talk mic
talk
comms
call
+6
0
+6
0
10k
+6
0
The CALL switch and indicator
has two functions:-
i. It illuminates when an
incoming "clearcom" call is
expected.
ii. It fires a DC pulse when
pressed to signal "clearcom"
devices (by illuminating their
call lamps) that an outgoing call
is to be made.
The OSC switch connects the
oscillator to the talk system.
The EXTERNAL ON switch
connects the external talk
input and output to the talk
system.
The PINK noise switch
connects pink noise to the talk
system.
The FREQ control gives
continuous adjustment of the
oscillator frequency from
100Hz to 10K.
The talk LEVEL control gives
continuous adjustment of all the
talk inputs except the talk mic
and has a range from + 6dB to
off.
The TALK TO AUXES
switch sends the talk system
signals to ALL the aux
busses.
The TALK TO GROUPS switch
sends the talk system signals to
any group buss which have their
GROUP module TALK
switches active.
The TALK TO MATRIX
switch sends the talk system
signals to any matrix buss
which have their MATRIX
module TALK switch active.
The TALK to MONO switch
sends the talk system signals to
the mono master bus.
The TALK TO LEFT switch
sends the talk system signals
to the left master bus.
The TALK TO RIGHT switch
sends the talk system signals to
The COMMS ON switch
sends the comms headset mic
amplifier signal to the comms
The LINK switch connects
the talk system into the
comms system so that talk
mic, headphones and local
output can send and receive
( respectively ) "clearcom"
signals as well as the headset.
The COMMS control gives
continuous adjustment of the
"clearcom" signal levels sent to
the headset, headphones and
local output. The level
adjustment is from + 6dB to off.
The TALK XLR socket accepts
balanced 150 Ohm microphone
signals from - 50dBu to - 20dBu
and uses an auto ranging gain
system to bring the level to
nominal 0dBu line level.
The TALK control gives
continuous adjustment of the
talk mic amplifier signal from +
6dB to off. The talk control
does not act on signals sent to
the comms system in LINK
mode.
The TALK switch activates
the talk mic on the talk
system and dims the local
outputs by 20dB to stop howl
round. When in LINK mode
the COMMS ON switch
activates the talk mic on the
comms system and the side
tone cancel circuit stops howl
round.