© 2005 Wohler Technologies Inc. ALL rights reserved
4
ATSC/DVB-3
User Manual P/N
821507
Rev-
D
Features
ATSC/DVB-3
Description
Section 1:
General Features, Specifications, and Installation
The ATSC/DVB-3 is a powered stereo monitor designed specifically for flexible, comprehensive monitoring of the six audio channels
associcated with ATSC/DVB programming. The unit is 2RU in size, for excellent fidelity without using excessive rackspace in the critical
"operating zone" of rack bays and consoles.
The ATSC/DVB-3 accepts AES/EBU and/or Dolby Digital
®
( AC-3) input signals providing capabilities to handle monitoring requirements
throughout the facility.
The speakers and amplifiers are arranged in the popular Wohler “biamp summed bass stereo” configuration: bass frequencies from ALL
selected channels are summed into a 20W amplifier, which drives the woofer. The two side channel amplifiers and speakers reproduce, in
stereo, only the mid- and high- frequencies. Note that the center speaker (the woofer) is NOT a dedicated Center nor LFE speaker. There is
also a headphone output, which mutes the speakers while in use.
High-resolution, 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 and VU 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 possible cancellation from mixdown in any
likely home playback situation.
To isolate possible faults, rotary switches let the operator route any one or pair of inputs to left and right speaker channels for acoustic
monitoring. A toggle switch mixes all six channels down to two for listening to all channels at once.
• 2U high: highest fidelity in minimum rackspace
• AES/EBU, or encoded ATSC/MPEG-2 (Dolby
Digital®) inputs on BNC and XLR connectors
• Simultaneous visual monitoring of all 6 channels
• 53-segment tri-color, wide-range, high-resolution
LED bargraph level meters
• SDI and AES Status Indication LEDs
• Pro-16 signal select switch and indication LED
• Left/Right Front “phase" indicators
• Select any channel or pair of channels for isolated
listening, or a stereo mixdown of all 6 channels
• Selected channel analog outputs on XLR connectors
• Headphone output
ATSC/DVB-3
Front Panel
Powered Digital Audio Monitor Unit
