Wohler VMQ-2D User Manual Download Page 19 | Manualshive

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© 2006 Wohler Technologies Inc. ALL rights reserved

19

VMQ Series

User Manual P/N

821504

Rev-

D

VMQ-SDI - System Block Diagram

Section 3: Tecnical Information

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Summary of Contents for VMQ-2D

Page 1: ...P N 821504 Rev D TitleandContents Introduction Section 1 Features and Specifications Description and Features Applications Specifications andRearPanelConfigurations Section2 Operation Installation Front Panel Features Rear Panel Features Section 3 Technical Information GeneralMechanicalObservations AudioCircuitDescription Interconnect Block Diagrams 1 2 3 4 5 7 8 10 12 15 16 16 17 2006 Wohler Tech...

Page 2: ... at plugs convenience receptacles and the point where they exit from the apparatus 11 Only use attachments accessories specified by the manufacturer 12 Use only with the cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip over 13 Unplug this apparatus during l...

Page 3: ...nc ALL rights reserved 3 VMQ Series User Manual P N 821504 Rev D Sect 1 General Features and Specifications General Features and Specifications Description Features Applications Specifications Rear Panel Configurations Section 1 ...

Page 4: ...uired Separatemutebuttons are provided for each channel These together with an LED that indicates channel muting allows the operator to instantly mute one or more channels and determine at a glance which channels are muted A stereo headphone jack has channels 1 and 2 summed on the left side and channels 3 and 4 on the right side TheVMQseriesisfullymagneticallyshieldedtoallowoperationimmediatelyadj...

Page 5: ...unbalanced 0 dBv balanced 12dBvunbalanced Othersensitivityrangesavailable on request Better than 70 dB below full output 300 Hz to 16 kHz 9dB 94 dB SPL at 2 feet Lessthan0 2 atanylevelbelow limitingthreshold Magneticshielding Connectors Dimensions HxWxD Weight Power Supply Power consumption Less than 0 2 Gauss any adjacent surface Balanced Phoenix Standard or XLR Optional 1 75 x 19 x 9 7 in 44 5 x...

Page 6: ... 2006 Wohler Technologies Inc ALL rights reserved 6 VMQ Series User Manual P N 821504 Rev D This page left intentionally blank ...

Page 7: ... 2006 Wohler Technologies Inc ALL rights reserved 7 VMQ Series User Manual P N 821504 Rev D Operation Installation Front Panel Features Rear Panel Features Section 2 ...

Page 8: ...ined without it The internal circuitry common is connected to the chassis In the VMQ 4 standard analog inputs unbalanced sources may also be applied to the balanced inputs For analog input signals the gain is 6 dB greater with a single ended source connected across both hot terminals than when connected between either input and common Note that the unused input terminal of a balanced input should ...

Page 9: ...t all Audio Connections Connection of the audio feeds is straightforward The system block diagrams located on pages 17 18 and 19 may be referred to for clarification of the general signal paths into and out of the VMQ units Please note the following 1 The internal circuitry common is connected to the chassis 2 If RCA phono inputs unbalanced were ordered for the VMQ 4 unit they have approximately 1...

Page 10: ...4 Channel Mute Indication 4 places Red LED There is a Channel Mute Indicator LED for each of four channels and each LED will glow red to indicate the mute feature is being used on the associated channel From left to right the Channel Mute buttons correspond to channels 1 through 4 5 Mute Button Channel Activity Indication 4 places Push Button Amber LED Mute Button There is a Mute Button for each o...

Page 11: ...Places 4 Places 4 Places 4 Places ACTIVITY WOHLER TECHNOLOGIES 1 MUTE 2 SDI MUTE ACTIVITY 3 4 DIGITAL AUDIO MONITOR PANEL VMQ SDI POWER ACTIVITY WOHLER TECHNOLOGIES 1 MUTE 2 AES1 AES2 MUTE ACTIVITY 3 4 MONITOR PANEL DIGITAL AUDIO VMQ 2D ACTIVITY TECHNOLOGIES WOHLER 1 2 MUTE 3 ACTIVITY MUTE 4 ANALOG AUDIO MONITOR PANEL VMQ 4 Figure 2a VMQ Series Front Panel Features Section 2 Operation VMQ SDI VMQ ...

Page 12: ...d outputs OUT 1 and OUT 2 derived from the two inputs All BNC connectors are female D SDI Input and Output BNC Connector VMQ SDI The SDI input connector is meant to receive a standard SDI digital audio signal The output is derived from the input signal and is re clocked Both BNC connectors are females E Termination Select 2 Position DIP Switch VMQ 2D This DIP switch sets the termination characteri...

Page 13: ... HI LO 4 3 LO LO HI US APPROVALS POWER SUPPLY TIONAL APPROVALS SEE SIDE FOR ADDI C R US APPROVALS POWER SUPPLY TIONAL APPROVALS SEE SIDE FOR ADDI C R HI ANALOG OUT FROM SDI 3 2 1 LO LO HI HI LO HI 4 GAIN CALIB LO SDI OUT IN B A F D H A C A G C E F SEE SIDE FOR ADDI TIONAL APPROVALS POWER SUPPLY APPROVALS US C R 1 2 3 4 HI LO HI LO ANALOG IN LO HI HI LO A B Figure 2b VMQ Series Rear Panel Features ...

Page 14: ... 2006 Wohler Technologies Inc ALL rights reserved 14 VMQ Series User Manual P N 821504 Rev D This page left intentionally blank ...

Page 15: ...821504 Rev D Technical Information General Mechanical Observations Main Audio PCB General Ciurcuit Description VMQ 4 System Block Diagram VMQ 2D System Block Diagram VMQ SDI System Block Diagram Section 3 NOTE PCB layout and schematic support documentation is available upon request ...

Page 16: ...tchperformsthisfunctioninstantlybytakingtheIC4 5invertinginputdirectly toground Limiting Circuitry TheoutputofthefourVCA saresummedintoIC6andIC7wheretheaudiowaveform sconversiontovoltagetakes place andtherectifiedoutputfromeachofthesestagesisthe inputtoacorrespondingnon invertingsectionofIC4 and IC5 These non inverting sections develop limiting control voltages for each VCA section A voltage above...

Page 17: ... 2006 Wohler Technologies Inc ALL rights reserved 17 VMQ Series User Manual P N 821504 Rev D VMQ 4 System Block Diagram Section 3 Tecnical Information ...

Page 18: ... 2006 Wohler Technologies Inc ALL rights reserved 18 VMQ Series User Manual P N 821504 Rev D VMQ 2D System Block Diagram Section 3 Tecnical Information ...

Page 19: ... 2006 Wohler Technologies Inc ALL rights reserved 19 VMQ Series User Manual P N 821504 Rev D VMQ SDI System Block Diagram Section 3 Tecnical Information ...

Page 20: ...untwoodAvenue Hayward CA 94544 Phone 510 589 5676 Fax 510 870 0811 US Toll Free 1 888 596 4537 web www wohler com e mail support wohler com You can now contact us at Wohler Technologies Inc 31055 Huntwood Avenue Hayward CA 94544 Phone 510 870 0810 Fax 510 870 0811 US Toll Free 1 888 596 4537 www wohler com support wohler com ...

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