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Each of the 4 ports also supplies a power source in order to facilitate the connection of floating contacts.
The ground and earthing conditions are shown in the above diagram. The strict separation of control and
audio signals guarantees the trouble-free installation.
Sequence function
The following example shows in sequence the necessary steps from closing the contact of an external
switch to listening to the audio signal:
A switch is connected to one of the DMM 4650’s control inputs (A1 - D4). The desired input is selected
in the trigger menu. Logic level (high, low), delay, and function (dyn, stc, latch) can be set. The desired
sequence (Sxx) gets chosen here as well.
For this sequence, the actions of the DMM 4650 are programmed step by step. Standard sequences are
provided as factory presets. They can be modified as need arises and stored as user presets.
Example of a sequence: set output (lamp indicator), audio control SUM off, audio control DMM -3 dB, wait
for input release, after release start alarm, delay 10 sec. (alarm duration), end.
This sequence is entered line-by-line with special commands (list page 25) and - including name and
priority - stored as a preset. If an appliance uses unaltered functions on a regular basis, it is also possible
to save these sequences via the RS 232 interface.
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