Cloud 46 INTEGRATED, Руководство по установке и настройке

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46/50 Integrated Mixer Amplifier Setup And Installation Guide
CLOUD ELECTRONICS LIMITED
16 DC Control of Music Functions
The 46/50 can be used as part of an automated sound system by controlling the music level and music
source with a pair of external 0-10V DC voltages. The 3-pole connectors that are normally used to
terminate RSL-6 or RL-1 remote control plates can be used to feed two separate control voltages into the
46/50 on a zone-by-zone basis. Pin 1 is a ground (0V) termination common to both control voltages; this
should be connected to the technical ground (0V) of the voltage source, Pin 2 is the control voltage input
for the music level and pin 3 is used to control the music source selection.
Control of music level
A maximum gain reduction of 70dB can be achieved with a control voltage of +10V;
the rate of attenuation is approximately 130mV per dB. A control voltage of zero realises unity gain (full
volume), however, with no external connection to pin 2, an internal 4k7 resistor connected to +15V will
'pull up' the control voltage to provide maximum attenuation. The output impedance of the control voltage
source should be low enough to overcome the influence of this resistor.
Music source selection
Here are the details of the music source select control voltages (pin 3) required to switch the six line input
signals:
Off >+9.0V
Line 1 +7.5V
Line 2 +6.0V
Line 3 +4.5V
Line 4 +3.0V
Line 5 +1.5V
Line 6 0V
With no external connection to pin 3, an internal 15k resistor connected to +15V will 'pull up' the source
select control voltage and the 'off' position will be selected. The output impedance of the control voltage
source should be low enough to overcome the influence of this resistor. If you would like to fix the music
source to a particular line input, wire a fixed resistor from the table below between pins 1 & 3 on the
remote control connector:
Line 1 16k Line 4 3k9
Line 2 11k Line 5 1k8
Line 3 6k8 Line 6 wire link
If the control voltage source is not isolated from the power earth, there is a small risk of creating a 'ground
loop' by linking the 46/50 technical ground to the ground of the equipment providing the control voltages.
To minimise this risk of a ground loop occurring, we suggest that all pieces of equipment be positioned
in close proximity and supplied from the same power outlet.
16
V6 070113