
Panel User Guide Issue 1.4 4000 Digital Series II
Page 128 STA0380
Pressing and holding the auxiliary control pot switch shows the current level setting for each DAK. There
is no LED indication for this switch action.
4.13.10 Main Volume Control
Turn the Main Volume Control clockwise to increase the intercom volume, counter-clockwise to
decrease the volume.
The current setting of either the Main or Auxiliary Volume Control is displayed as a level bar on the Reply
Key, above the Reply Key text. Turning these controls clockwise or counter-clockwise, increases or
decreases the length of the relevant control bar.
The most recently moved control is displayed. If the Auxiliary Volume level setting is displayed and the
Auxiliary Volume Control is static for 2 seconds, the display reverts to showing the Main Volume level
setting. (The auxiliary level bar is displayed as a broken line to distinguish it from the main level bar).
The level bars are graded in 0.5 unit steps from a minimum setting of 0.0 (off) to a maximum setting of
10.0 (approximately +12 dB). Each 0.5 unit step corresponds to 1 pixel of the level bar. The default
setting for both Main and Auxiliary Volume controls is 5.0 (approximately 0 dB).
Pressing the Main Volume Control invokes loudspeaker cut. The green LED above the Reply Key is
illuminated while the loudspeaker is cut.
4.13.11 Reply Key
This DAK is designated to respond to any unscheduled calls. The green LCD indicator on the REPLY
Key only flashes to signal the presence of an unscheduled call, when a DAK is unavailable, (i.e. to
indicate that the call can only be responded to by the Reply Key).
The Reply Key can only respond to the call mnemonic displayed. All other incoming calls are placed in
a queue and have to be accessed in turn. The latest call is placed at the front of the queue. The maximum
number of calls in this queue is ten.
If the DAK is used to respond to a call, then the Reply Key displays the next call in the queue.
4.13.12 Direct Access Key (DAK)
The 4000 Series LCD Key Panels have Direct Access Key (DAK) pushbuttons. These DAKs are used
to make Listen and/or Talk routes to and from the Control Panel or other audio connections. The DAK
can also be assigned to trigger a control event from either the Control Panel or the matrix.
A panel fitted with a PDE4537 options card can have an external line
level auxiliary input.
R E P L Y
Main level indicator
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