
Panel User Guide Issue 1.4 4000 Digital Series II
Page 6 STA0380
3.2.6 Designation Strip
This strip indicates the assignments that have been programmed for the DAKs.
NOTE: Designation strips can be printed using the CMAPSi print facility.
3.2.7 Microphone Mute Pushbutton
Press the Microphone Mute Pushbutton to mute the active microphone. The red LED is illuminated whilst
the microphone is muted. Another press will re-enable the microphone.
3.2.8 Main Volume Control
Turn the Main Volume Control clockwise to increase the intercom volume, anti-clockwise to decrease
the volume. The volume level indicator LED changes colour according to the volume setting; green
indicates a low setting, green and orange an intermediate setting and red a high setting.
3.2.9 Loudspeaker
Audio is output from the loudspeaker unless the Headset Select is engaged.
3.2.10 Headset Socket (XLR 5 or DIN 5)
The 5 pin Headset Socket is used to connect an optional headset for use when the gooseneck
microphone and panel loudspeaker are not required.
(Headsets should be used in areas where a number of control panels are used in close proximity, this
should avoid any possibility of howlround (audio feedback) occurring).
3.2.11 Headset Select Pushbutton
The Headset Select Pushbutton is used to select headset operation. The red LED is illuminated to
indicate that the headset microphone is active and the main gooseneck microphone and panel
loudspeaker are muted.
A panel fitted with the PDE4537 options card can be connected to a
powered external loudspeaker.
Contact Vitec Group Communications for suitable External Loud-
speaker options
Your panel loudspeaker reduces volume automatically when a talk key
is pressed. This is to help reduce the chance of howlround (audio
feedback) occurring.
Consult the Vitec Group Communications Installation Guide for fur-
ther details.
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