User manual

ATSC/DVB-3/M User Manual P/N 821650 Rev-B

Features

ATSC/DVB-3/M

Description

Section 1: General Features and Specifications

The ATSC/DVB-3/SDI is a powered stereo monitor designed specifically for flexible, comprehensive monitoring of the six audio

channels associated 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/M model features an HD/SD-SDI input and reclocked

output on BNC connectors capable of accepting either standard SD-SDI

or high definition HD-SDI audio signals, as well as

balanced XLR and unbalanced BNC inputs and loop-through outputs for monitoring PCM (Pulse Code Modulation), AES/EBU, and

AC-3 (Dolby Digital®) audio signals. HD/SD-SDI group and subgroup selection is set via front panel switches. Two XLR connectors

output analog audio of the sources selected for the left and right speaker channels.

The internal speakers and amplifiers are arranged in the popular Wohler “biamp summed bass stereo” configuration: bass

frequencies from ALL selected channels are summed into a 20 watt 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 stereo headphone output, which mutes the speakers while in use.

Six high-resolution wide-range LED bargraph level meters are provided for all six channels for very accurate metering. Fifty-three

bi-color segments spanning a range of 65 dB simultaneously display signal levels according to both the PPM and VU standards.

Bargraph brightness is adjustable using two recessed trim pots on the front panel.

To isolate possible faults, two rotary switches on the front panel let the operator route any one or pair of inputs independantly

to left and right speaker channels for acoustic monitoring. A toggle switch is provided for mixing all six channels down to two for

listening to all channels at once.

Both Left/Right and Front/Surround "Phase"/Polarity LED indications are provided to alert of possible cancellation from mixdown

in any likely playback situation. The unit also features SDI, AC-3, and PCM status indication LEDs, Pro-16 select switch, and

power indication LED.

2U Stereo Digital Audio Speaker Monitor

ATSC/DVB-3/M Front Panel

• 2U high: highest fidelity in minimum rackspace

• Monitors HD-SDI or SD-SDI, AC-3 (Dolby

Digital), and PCM or AES audio signals

• Simultaneous visual monitoring of all 6 channels

• HD/SD-SDI, AC-3, and PCM or AES Status Indication LEDs

• HD/SD-SDI group select 1-4 and subgroup select 1-2

• Six 53-segment high resolution bargraph level meters

• Bargraph brightness adjust

• Pro-16 signal select switch and indication LED

• Left/Right Front phase indication LEDs

• 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

• Power indication LED