34 Introduction T2004 Multi-Control Head System Manual
© Tait Electronics Limited May 2004
control heads with the global mute function enabled will mute their
speakers. If all microphones are on-hook then all the speakers will unmute
when a call is received. A user shall be able to join a conversation by picking
up the microphone. This will unmute the speaker audio at that control head.
With Global Mute disabled (i.e. the jumper is not fitted), received audio is
present at all control heads, and transmit audio is heard at all heads except
the head that is transmitting.
Not all control heads in the system must be set to the same Global Mute
setting. For example:
■ Where a despatcher station has two control heads in the same room, both
heads would need Global Mute enabled to avoid audio feedback.
■ Where a supervisor may have a control head installed in their office, and
wants to hear all incoming and outgoing traffic, Global Mute would not
be enabled. Note that in this example, outgoing transmit audio from this
control head would be heard at the despatcher’s station heads.
General Specifications
Radios supported Series II T2020 and T2040 radios
Possible number of control heads Between one and five
Control head DC supply & Speaker connector Phoenix MCV 1,5/4-G-3,81 4 way jack
Control head DC supply voltage (at 800mA) +13.8V nominal
+10.8V minimum
+16.0V maximum
Balanced line audio levels Preset to -10dBm for receiver audio
Preset to -15dBm for transmitter audio
Control head dimensions Standard T2000 control head dimensions
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