LDA Audio Tech VCC-64 User manual

User's Manual
VCC 64 – Volume and Channel
Controller
Model: VCC-64

Index
1 INTRODUCTION........................................................................................................................... 1
2 DESCRIPTION.............................................................................................................................. 1
2.1 INPUTS AND OUTPUTS.............................................................................................................. 1
2.1.1 DATA BUS / POWER SUPPLY...................................................................................................... 2
2.1.2 BUS ADDRESS............................................................................................................................. 2
3 CONNECTION.............................................................................................................................. 3
4 FUNCTIONING............................................................................................................................. 4
4.1 QUIESCENCE MODE...................................................................................................................4
4.2 ACTIVE MODE..............................................................................................................................4
4.3 AUTOMATIC LOCK......................................................................................................................5
5 FAULT RESOLUTIONS................................................................................................................ 6
5.1 SCREEN IS BLANK......................................................................................................................6
5.2 THE NUMBER OF SOURCES AND VOLUME SOES NOT APPEAR ON SCREEN.................6
6 MANTEINANCE INSTRUCTIONS................................................................................................ 6
7 TECHNICAL SPECIFICATIONS ................................................................................................. 7
Index of tables
Table 1: Data Bus / Power Supply......................................................................................... 2
Table 2: Volume - Zone Gain................................................................................................. 4
Table 3: Audio Source Screen................................................................................................5
Table 4: Technical Specifications...........................................................................................7
Index of illustration
Ilustration 1: Rear Side VCC-64.............................................................................................1
Ilustration 2: Address Switch..................................................................................................3
Ilustration 3: Bus connection..................................................................................................3

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SECURITY INSTRUCTIONS
1. Please read carefully these safety instructions.
2. Keep this User Manual for future reference.
3. Unplug the equipment from theAC before cleaning.
4. Do not use liquid or sprayed detergent for cleaning.
5. Use a cloth for cleaning.
6. Do not expose this equipment to humidity.
7. Install this equipment in a safe surface. If the equipment is not in a safe surface, it
may fall and be damaged.
8. The openings on the enclosure are for air convection. Do not allow overheat. DO
NOT COVER THE OPENINGS.
9. Place the power cord where people will not step or stumble. Do not place objects on
the power cord.
10.Always observe all warnings and precautions the equipment might indicate.
11.If the equipment is not used for several days, disconnect the power supply to
prevent damage from overloading. Never pour liquid into the openings, this could
cause fire or electric shock.
12.Never open the equipment. For safety reasons, the equipment should only be
opened by qualified personnel.
13.Pay attention to connection polarity when operating the machine with a power
supply (DC). Reverse connection polarity may cause damage to the equipment, or
to the power supply.
14.Let staff check the equipment if any of these situations occur:
a) The power cord or power plug is damaged.
b) Liquid has penetrated inside the equipment.
c) The equipment has been exposed to moisture.
d) The equipment does not work well or does not work according to the instruction
manual.
e) The equipment was dropped and damaged.
f) If the equipment has obvious signs of damage.
15.Disconnect the audio inputs and outputs while making connections. Be sure to use
the proper cables to make the connections.

User's manual: VCC-64
1 INTRODUCTION
The VCC-64 allows up to 64 programmable channels and volume control (0-9).
Usually installed in local zone and connected via bus to the system, it offers source
selection, volume control and lock function.
FEATURES:
1. Source selection (1-64)
2. Volume setting for the zone (0-9) – 10 steps per change
3. Automatic lock function
4. It shows the identifier of the music source routed to the zone
5. It shows the volume level asigned to the zone
6. Lock activated indicator
7. Connection of devices by bus mode
2 DESCRIPTION
The VCC-64 has a 2x8 character alphanumeric display where it shows the
information related to the zone of the PA system that is asigned.
2.1 INPUTS AND OUTPUTS
www.lda-audiotech.com 1
Ilustration 1: Rear Side VCC-64

2.1.1 DATA BUS / POWER SUPPLY
The VCC-64 has two poles for data connection through RS-485 protocol. It has a
power supply input of 12V DC with a consumption of 1,2W (100mA). The connector is
marked as J500. When the equipment has a power supply, the LED indicator marked as
power will be on.
The maximum number of units connected to the same interface is 8. The maximum
length (considering all sections) is 1000 m.
Mark Description Type Signal Activation
GReference for power supply (negative
pole) Input -Connect it to the negative pole of the power supply
12V Continuous power supply (positive pole) Input +
Connect it to the negative pole of
the power supply. (max 100 mA / 1
V dc)
D- Serial connection port for integration
RS-485. Terminal D- Port D- Standard RS- 485/9600/8/SPACE/1
D+ Serial connection port for integration
RS-485. Terminal D+ Port D+ Standard RS- 485/9600/8/SPACE/1
Table 1: Data Bus / Power Supply
The connection uses a female Eurobock type connector (included with the
equipment) of 4 pins and 3,81mm pitch. The range of cable section for each pole of this
connector is 0,14 1,5mm2 (30 14 AWG).→ →
2.1.2 BUS ADDRESS
The VCC-6 has a DIP-Switch to configure the address in the bus RS-485. Every
controller assigned to the same zone, should have the same address configuration. For
different zones different address should be assigned.
2 LDA Audio Tech - Severo Ochoa 31- 29590 MÁLAGA, SPAIN. Tlf: [phone]

User's manual: VCC-64
3 CONNECTION
The VCC-64 is connected to the system's interface through bus mode, and every
VCC-64 will be connected from each other. Only one of the VCC-64 has to be connected
to the system's interface. This way the unit located closer to the system will be connected
to the interface, and from this unit to the next VCC-64. The last VCC-64 in the bus will not
have any connection to a consecuent device.
www.lda-audiotech.com 3
Ilustration 2: Address Switch
Ilustration 3: Bus connection

4 Operation
The VCC-64 has a 2x8 character alphanumeric display where it shows the
information related to the zone of the PA system that is assigned.
C H 4 9 V O L 9
B G M
4.1 QUIESCENCE MODE
During the quiescence condition, the display will indicate the music source assigned
to the zone, the volume level (0-9) and the lock indicator.
4.2 ACTIVE MODE
To unlock the device, press CH-, CH+ and then CH- back again. The lock indicator
will disappear from the display.
Once unlocked, press VOL+ to raise the volume level of the zone and VOL- to lower
it. The following table of equivalence shows the relationship between the volume indicated
in the VCC-64 and the gain associated to the zone.
4 LDA Audio Tech - Severo Ochoa 31- 29590 MÁLAGA, SPAIN. Tlf: [phone]