Expansion Connectors; Ground Lift Switch; Power Switch - Harman AKG DMM 4/2/2 Bedienungsanleitung

NOTE
NOTE
DMM 4/2/2 DMM 4/2/2
DMM DMM 4/2/2 4/2/2
FORCE OFF
With a Lo level at the FORCE OFF input, a channel is
manually forced to switch off. This input has the
highest priority:
• Overrides FORCE ON
• Overrides the activation of a channel by the
automatic mixing functions
• Overrides the holding of a channel by Last Mic On
(see "Automatic mixing functions" Page 34)
A channel switched off by Force Off has no effect on the automix algorithm
mixing functions" Page 34) Noise Detect, NST and Best Mic On.
VCA IN
With a DC signal, the overall volume can be varied.
This jack allows you to externally adjust or mute the
output level. Depending on the application, you can
use potentiometers, switches or external control
voltages for this.
If you are using an external potentiometer, the maximum adjustable volume will be determined
by the "OUT MASTER" rotary control. For the correct adjustment, the potentiometer must be
set to 100%. Thereafter, the maximum adjustable volume is limited on the "OUT MASTER"
rotary control. The potentiometer can now be used to adjust the volume below the set
maximum value. This procedure prevents unwanted feedback.
LOGIC OUT
As soon as the microphone associated with the
channel is activated, this output is set to 0 V. It can
than be used, for example, to trigger a camera
control or activate the LED ring of a microphone.

Expansion connectors

If four microphone channels are not sufficient, several DMM 4/2/2 can be connected together
(up to a maximum of 5). The expansion connectors TO MASTER and TO SLAVE can be used
for daisy-chaining. These are two 8-pin mini-DIN jacks labelled "EXPANSION".

Ground Lift switch

The Ground Lift switch connects or isolates the case with 0 V potential of the power supply.

Power switch

The power switch is used to turn on the unit.
Figure 5: FORCE OFF diagram
Last Mic On Last Mic On Last Mic On
automix algorithm (see "Automatic
automix algorithm automix algorithm
Figure 6: VCA IN diagram
Figure 7: LOGIC OUT diagram
Description
33