Sonifex SM-24, User Handbook Manual

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Station Master & Talkback Intercoms Handbook
T B - S D & T B - S R S TAT I O N M A S T E R TA L K B AC K
I N T E R CO M CO N F I G U R AT I O N & CO N T R O L S
TB
-SD &
TB
-SR ST
A
TION MASTER
T
ALKBA
C
K
INTERC
OM C
ONFIGUR
A
TION & C
ONTROLS
7
Power LED Indicator
The power LED indicates that the equipment is powered and operational when illuminated.
Level Control for Monitor Loudspeaker and Headphones
This will alter the output level of either the top mounted monitor loudspeaker or the rear
mounted headphone output. Plugging in the headphones will disable the loudspeaker
output.
External Select Switch 1
This selects and routes external input 1 to the headphones or loudspeaker.
External Select Switch 2
This selects and routes external input 2 to the headphones or loudspeaker.
Talkback Switches
While a button is pressed, the switch is illuminated and the talkback is active to that
location. The “ALL” button allows talkback to all 4 of the locations. The buttons work with
both a momentary and latched operation. If held down, the selection is cancelled when
released, otherwise the button is alternate action. When talkback is active, depending on
the setting of Jumper 1, the external inputs can be either muted or mixed.
Built in Electret Microphone
The built in microphone, fitted under the front panel, is used unless the external mic is
selected on the rear panel.
Monitor Loudspeaker
There is a 1W mono speaker output to hear talkback and external monitoring. The talkback
level is adjustable via the pot on the rear panel. The external input level is set internally.
The talkback and EXT 1 and EXT 2 output levels can be adjusted using the front panel level
control. The speaker can be muted via a remote on the external input connector when used
in an area with live microphones.
External Microphone
The external microphone input is an XLR 3 pin connector on the top panel which allows
the fitment of a gooseneck microphone or other standard microphone. Selection for the
microphone input type is made on the back panel.
Pin 1: Screen.
Pin 2: Phase.
Pin 3: Non-phase
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