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Title and Contents

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Introduction ..........................................................................

Section 1: Features, Specs, and Installation

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Description and Features .......................................................

Applications and Specifications ..............................................

Installation .............................................................................

Section 2: Operation

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Front Panel Features ..............................................................

Rear Panel Features ...............................................................

Audio Amplifier and Speaker Configuration ...........................

Balance Control Characteristics ..............................................

Section 3: Technical Information

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General Technical information ...............................................

Level Meter Description and Specifications.................................

ATSC/DVB-3 Block Diagram ..................................................

ATSC/DVB-3

2U Digital Stereo Speaker Monitor

(Document P/N

821507

, Rev-

)

with AC-3 and AES/EBU Inputs on

XLR and BNC, Selected Digital to Analog

Outputs on XLR, Six 53-Segment

Level Meters, and Phase Indication

CONTENTS

User Manual

Summary of Contents for ATSC/DVB-3

Page 1: ...l Characteristics Section 3 Technical Information General Technical information Level Meter Description and Specifications ATSC DVB 3 Block Diagram ATSC DVB 3 2U Digital Stereo Speaker Monitor Document P N 821507 Rev D with AC 3 and AES EBU Inputs on XLR and BNC Selected Digital to Analog Outputs on XLR Six 53 Segment Level Meters and Phase Indication 1 2 3 4 5 6 7 8 12 14 14 15 16 17 18 CONTENTS ...

Page 2: ...eing walked on or pinched particularly 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 ...

Page 3: ...LL rights reserved 3 ATSC DVB 3 User Manual P N 821507 Rev D Sect 1 General Features and Specifications General Features Specifications and Installation Description Features Applications General Specifications Installation Section 1 ...

Page 4: ... wide range LED bargraph level meters are provided for all six channels for very accurate metering 53 bicolor segments spanning a range of 65 or 90 dB simultaneously display signal levels according to both the PPM andVU standards An adjustable duration hold of the peak PPM value may also be displayed Both Left Right and Front Surround Phase Polarity LED indications are provided to alert of possibl...

Page 5: ...s SimultaneousVU bar andPPM dot 0dBvbalanced 26dBvbalanced 104dBSPL 80 Hz 16 kHz 5 dB 10 dB 40 Hz 20 kHZ 14 W transient 10 W continuous 35 W transient 25 W continuous Lessthan0 15 atanylevelbelow limit threshold 6 orlessatworstcasefrequencies above120Hz includingcabinet resonance typicallylessthan1 5 Betterthan 68dBbelowfulloutput Lessthan0 8Gaussanyadjacent surface Balanced XLR 60 W 100 220VAC 50...

Page 6: ...is securely attached to the front panel at eight points along its surface not just at the four corners of the chassis ears This feature will reduce or eliminate rear bracing requirements in many mobile portable applications The weight of internal components is distributed fairly evenly around the unit Audio Connections Connection of the audio feeds is straightforward Please refer to the system blo...

Page 8: ... side of the front panel three on the right side Dynamic range for these meters is 65 dB and they are able to display signal levels using both PPM and VU standards An adjustable duration hold of peak PPM value may also be displayed Each meter is labeled according to the standard Surround Sound nomenclature left front right front center low frequency effects left surround and right surround See pag...

Page 10: ...ut of phase signals In general observing the AVG LED alone is sufficient for proper phase monitoring While it is normal for stereo signals to contain some intermittant instantaneous out of phase and in phase conditions IN and OUT LEDs a steady RED glow of the AVG LED indicates an out of phase alarm condition Headphone Jack This jack accepts a standard 1 4 phone type stereo plug When you plug in he...

Page 12: ...d 2 This DIP switch sets the termination characteristics of the Source 1 and Source 2 balanced and unbalanced input connectors There are two switches one for the Source 1 balanced and unbalanced inputs S1 and a second switch for the Source 2 balanced and unbalanced inputs S2 In the event that signals entering Source 1 or 2 are connected to downstream equipment then the respective DIP switch should...

Page 14: ...dio amplifier speaker configuration Balance Control Characteristics The balance control attenuates the signal from the source so that the left and right bass frequencies summed together and reproduced in the woofer channel will also respond to the balance control Example If an audio signal of a voice speaking English is fed to the left A input and a voice speaking Spanish is fed to the right B inp...

Page 15: ...15 ATSC DVB 3 User Manual P N 821507 Rev D Technical Information General Technical Observations Level Meter Description and Specifications ATSC DVB 3 Block Diagram Section 3 NOTE PCB layout and schematic support documentation is available upon request ...

Page 16: ...e immediately after the input stage and before the volume control section The signal pick off for the headphones is after the volume and balance controls Speaker muting is controlled by circuitry that senses connection of headphones to the jack The power amps are attached to an aluminum heatsink plate which is also connected to the circuit common for these devices The heatsink plate forms an opera...

Page 17: ... 158 4 mm x 0 04 1 mm Segment pitch is 0 039 0 99 mm Each LED bargraph display section visually indicates the dynamic changes within the audio signal source s being monitored All bargraph LED segments are of the tri color type green amber red Ballistics for these meters are factory set to display a single floating PPM dot continuous decay of 20 dB in 1 5 seconds above a VU bar each segment s color...

Page 20: ...hler Technologies Inc 31055 HuntwoodAvenue Hayward CA 94544 1 888 596 4537 Fax 510 870 0811 web www wohler com e mail support wohler com 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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