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VDC-48

Loudspeaker Management System

User Manual

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Summary of Contents for VDC-48

Page 1: ...VDC 48 Loudspeaker Management System User Manual ...

Page 2: ...n a wet basement or near a swimming pool and the like 6 CLEAN ONLY WITH DRY CLOTH Unplug the unit from the wall outlet before cleaning Do not use liquid cleaners or aerosol cleaners Use a damp cloth for cleaning 7 DO NOT BLOCK ANY VENTILATION OPENINGS Slots and openings in the cabinet back or bottom are provided for ventilation to ensure reliable operation of the limit and to protect it from overh...

Page 3: ... unstable cart stand tripod bracket or table The unit may fall causing serious injury to someone and serious damage to the appliance A unit and cart combination should be moved with care Quick stops excessive force and uneven surfaces may cause the product and cart combination to overturn 13 UNPLUG THIS APPARATUS DURING LIGHTNING STORMS OR WHEN UNUSED FOR LONG PERIODS OF TIME For added protection ...

Page 4: ... Introduction 5 2 0 Features 6 3 0 Front Panel Functions 7 4 0 Rear Panel Functions 9 5 0 Powering Up the Device 10 6 0 Operating the Channel Menus 11 7 0 Operating the System Menus 18 8 0 Quick Reference 25 9 0 PC Control Software 26 10 0 Specifications 27 11 0 Warranty 29 ...

Page 5: ...ty 8 bands of EQ per channel 31 bands of GEQ per input multiple crossover selections and full function limiters Precise frequency control is achieved with its 1 Hz resolution Inputs and outputs can be routed in multiple configurations to meet any requirement The VDC 48 can be controlled or configured in real time on the front panel or with the intuitive PC GUI accessed via the RS 232 USB or Ethern...

Page 6: ... or Phase for each Input and Output 31 Bands GEQ for each Input Multiple Crossover types with Full Function Limiters Precise Level Polarity and Delay CPU and DSP upgrade via PC Individual Channel Buttons with Linking capability 2 Line x 16 Character Backlit LCD Display Full 5 segment LED s on every Input and Output Storage of up to 30 Preset Setups Security Lock Ethernet USB and RS232 Interface fo...

Page 7: ...for indication When the Menu or Menu key is held down the Mute Buttons selects the corresponding channel for the LCD menu display and is acknowledged by a green LED below the button The last modified menu will be displayed on the LCD Multiple channels can be linked or unlinked by pushing the desired channels This eases programming for same parameters across multiple channels Multiple Inputs can be...

Page 8: ...ng Mute key will go to the specify channel menu Menu Go to next menu screen Holding this button down while pressing Mute key will go to the specify channel menu Cursor Go to previous cursor in the menu screen Cursor Go to next cursor in the menu screen Enter Sys Speed Enter is used only in the System Menu to proceed with selected actions Sys enters the System Menu from the main menu Speed modifies...

Page 9: ...50V Slow blow type 3 Power switch Controls power On Off 4 Ethernet RJ45 connector for Ethernet control The device should be connected to a router switch hub via a straight through CAT 5 cable 5 Analog Inputs and Outputs Separate 3 pin connectors are provided for each audio input and output The device s output stage employs the balanced impedance topology All I O connectors have pin 1 as ground shi...

Page 10: ...t period the unit boots and displays the device model and firmware version After the initialization process is finished the VDC 48 displays its main screen VIETA VDC 48 P01 The screen shows the current program number and program name assigned to the unit If the program number is 31 and the name is MEMORY it means that no program is assigned the last data before previous power down is recalled inst...

Page 11: ... lit for the linked channels Any modification of the data for the selected channel will be applied to the linked channels as well To cancel the linking simply deselect the desired channel while the Menu or Menu key is still pressed or just press the Exit key to deselect all channels 6 1 Input Output Signal LEVEL The level or gain ranges from 40 00dB to 15 00dB in 0 25dB steps POL I1 Signal LEVEL 0...

Page 12: ...on This control selects one of the 8 available bands I1 EQ1 EQ 1 BYPASS This control will un bypass Off or bypass On the currently selected band I1 EQ1 BYPASS Off TYPE The 5 types of EQ that can be used are parametric PEQ low shelf LO SHF high shelf HI SHF 1st degree all pass AP 1 and 2nd degree all pass AP 2 I1 EQ1 TYPE PEQ FREQ The EQ center frequency ranges from 20Hz to 30kHz in either 1Hz step...

Page 13: ...cified value I1 EQ1 BW 0 33 Q 4 36 I1 EQ1 DEG 15 5 deg LEVEL The EQ level or gain ranges from 30 00dB to 15 00dB in 0 25dB steps I1 EQ1 LEVEL 0 00dB 6 3 Input Graphic Equalizer GEQ The graphic equalizer has 31 bands of equalization from 20Hz to 20kHz This control selects one of the 31 available bands The frequency corresponding to each band is also shown I1 GEQ1 GEQ 1 f 20 LEVEL The GEQ level or g...

Page 14: ... either 1Hz steps or 1 36 octave steps The frequency steps can be selected in the System Menu Please refer to page 21 for more details O1 XOver FRQL 1000Hz SLPL The filter slope for low frequency crossover point high pass ranges from 6 to 48dB octave If the selected filter type is Linkwitz Riley the available slopes are 12 24 36 or 48 dB octave only O1 XOver SLPL 24dB TYPH The 3 available filter t...

Page 15: ... 21 for more details O1 XOver FRQH 1000Hz SLPH The filter slope for high frequency crossover point low pass ranges from 6 to 48dB octave If the selected filter type is Linkwitz Riley the available slopes are 12 24 36 or 48 dB octave only O1 XOver SLPH 24dB Filter configuration Low crossover point High crossover point None FTRL Off FTRH Off Highpass FTRL not Off FTRH Off FRQL Lowpass FTRL Off FTRH ...

Page 16: ... in 0 1ms steps then ranges from 1 to 100ms in 1ms steps O1 Comp ATTACK 10ms RELEASE The compressor release time can be set at 2X 4X 8X 16X or 32X the attack time O1 Comp RELEASE 8XAtck RATIO The compressor ratio is the slope in which the signal is compressed It ranges from 1 1 to 1 40 O1 Comp RATIO 1 1 6 6 Input Output Channel Name NAME A 6 characters name can be assigned to each channel I1 Name ...

Page 17: ...ms steps O1 Limit ATTACK 10ms RELEASE The limiter release time can be set at 2X 4X 8X 16X or 32X the attack time O1 Limit RELEASE 8XAtck 6 8 Output Source IN1 4 This sets the input channel source for the current output channel It can be used to mix the input source in dB or disable it Off If more than one input sources are enabled they will be added together as the source for the current output ch...

Page 18: ...atile memory that can store up to 30 different preset setups P This control selects which program to recall from the non volatile memory The program name is displayed to the right of the program no SYSTEM Recall P 1 7 2 Preset Store The VDC 48 has a built in non volatile memory that can store up to 30 different preset setups A program can be stored using this menu The old program with the same pro...

Page 19: ...4 Out 5 Out 6 Out 7 Out 8 None Any Any Any Any Any Any Any Any Stereo 2 Way In1 In1 In2 In2 Any Any Any Any Stereo 3 Way In1 In1 In1 In2 In2 In2 Any Any Stereo 4 Way In1 In1 In1 In1 In2 In2 In2 In2 Note The configuration mode configures the input sources when selected The user can change the source afterwards if desired It does not keep the configuration in memory 7 5 Copy Channels Copy Channels f...

Page 20: ...o be copied to SYSTEM Copy TARGET In2 7 6 General Settings FREQ MODE This changes the frequency control mode for EQ and crossover filters It can be 36 steps octave or All Frequencies 1 Hz resolution SYSTEM Generl FREQ MODE All DELAY UNIT This sets the time unit for input and output delay to ms ft or m SYSTEM Generl DELAY UNIT ms ...

Page 21: ...rol assigns a device ID from 1 to 16 to the unit This ID is only useful when a network of more than 1 unit is used in conjunction with 1 or more XPanel SYSTEM Comm DEVICE ID 1 NETWORK ID This control assigns a network ID from 0 to 60000 to the unit This ID is used for future network expansion only please leave it at 0 SYSTEM Comm NETWORK ID 0 7 8 Ethernet Settings The network settings are separate...

Page 22: ...55 255 Eth SM The sets the subnet mask used by your network SYSTEM Eth SM 255 255 255 255 7 9 Security Password The factory default password is blank it can be changed to any combination of 4 characters in this menu OLD PW The user is required to enter the old password first to modify the password SYSTEM Passwd OLD PW NEW PW The new password desired SYSTEM Passwd NEW PW ...

Page 23: ...he unit the user must enter the correct password The user can only lock or unlock all menus using the front panel XConsole is required to lock or unlock individual menu PASSWORD The password is 4 characters in length The factory default of a new unit does not require a password The user can change the password via XConsole or the Set Password menu SYSTEM Secure PASSWORD ...

Page 24: ...pe XOver FTRL Off Butterworth Linkwitz Riley Bessel XOver Low Frequency XOver FRQL 20 30 000 1 Hz XOver Low Slope XOver SLPL 6 48 6 dB octave XOver High Type XOver FTRH Off Butterworth Linkwitz Riley Bessel XOver High Frequency XOver FRQH 20 30 000 1 Hz XOver High Slope XOver SLPH 6 48 6 dB octave Compressor Threshold Comp THRESH 20 20 0 5 dBu Compressor Attack Time Comp ATTACK 0 3 100 0 1 1 ms Co...

Page 25: ...he device allowing the user to get the whole picture on one screen Programs can be recalled and stored from to PC s hard drive thus expanding the storage to become virtually limitless XConsole can be connected to the VDC 48 via RS232 USB or Ethernet USB requires the installation of additional driver The user is given an option to install it during the installation of XConsole and if the user did n...

Page 26: ...stalk 100dB Distortion 0 002 1kHz 4dBu Digital Audio Performance Processor 40 bit Sampling Rate 96kHz Analog Converters High Performance 24 bit Propagation Delay 1 5ms Front Panel Controls Display 2 x 16 Character Backlit LCD Level Meters 5 segment LED Buttons Mute Edit Controls Menu Controls Dial Encoder Embedded Thumb Wheel Connectors Analog Inputs 3 pin Female XLR Analog Outputs 3 pin Male XLR ...

Page 27: ...0 25dB steps Bandwidth 0 02 to 3 61 octaves Q 0 3 to 72 31 Band Graphic Equalizers 1 per Input Gain 30 to 15dB in 0 25dB steps Crossover Filters 2 per I O Filter Types Butterworth Bessel Linkwitz Riley Slopes 6 to 48dB oct Limiters 1 per Output Threshold 20 to 20dBu Attack 0 3 to 100ms Release 2 to 32X the attack time System Parameters No of Presets 30 Program Names 12 character length Delay Units...

Page 28: ...ing installation or repairs made without factory authorization or by anyone other than authorized VIETA Field Service Stations This warranty is void if the serial number has been defaced altered or removed Products covered by this warranty will be repaired or replaced at the option of VIETA without charge for materials or labor provided all the terms of this warranty have been met For factory serv...

Page 29: ...VDC 48 User Manual V1 1 www vietapro com ...

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