User manual

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

Please refer to Figure-2a on the following page to familiarize yourself with the front panel features of the ATSC/DVB-3/M unit. The

following sections describe these features and are referenced, by number, to Figure-2a.

Front Panel Features

Section 2: Operation

Speakers

The internal speaker system is comprised of two mid-range tweeter speakers (left and right) and one woofer speaker (middle).

The two side channel speakers reproduce, in stereo, only the mid and high frequencies. Please note that the woofer speaker

(middle) is not a dedicated Center nor LFE speaker.

Speaker Select Switches (Left and Right)

Use the left switch to select any one of six selected channels for monitoring from the left speaker. Use the right switch to select

any one of six selected channels for monitoring from the right speaker.

Note: These two switches are only functional when the All/Selected Switch (Item 7) is in the SELECTED position. These two

switches are NOT functional when the All/Selected Switch is in the ALL position.

Speaker Select Disabled Indication LEDs (Left and Right)

When the All/Selected Switch (Item 7) is in the ALL position (thus disabling the Speaker Monitor Select Switches) both of

these LEDs will glow RED.

Audio Level Meter LED Bargraph Displays (1-6)

Audio levels for source channels 1 through 6 are displayed via these six high-resolution 53-segment LED bargraph display level

meters (three on the left 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. 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 page 18 for more

information about these level meters.

Bargraph Brightness Trim Pot (Left and Right)

These two trim pots are recessed into the front panel and can be accessed using a small screwdriver. Turning either trim pot

clockwise will increase the relative brightness of the associated bargraph display LED segments. The left trimpot affects the left

three bargraph displays (1-3); the right trim pot affects the right three bargraph displays (4-6).

Input Source Select Switch

This 2-position toggle switch allows the operator to choose between two possible input sources (1-AES or 2-SDI) for monitoring

through the unit. Choosing 1-AES selects the AC-3 or PCM/AES signals entering the Source 1 connectors on the rear panel

(See Items C and D, page 12). Choosing 2-SDI selects an AC-3 or PCM/AES source that is de-embedded from the HD/SD-SDI

signal entering the Source 2 BNC connector on the rear panel (see Item F, page 12).

All/Selected Switch

When this 2-position toggle switch in in the ALL position, a stereo mixdown of the five full channels is applied to the speaker

amps (the LFE channel is excluded). In this posiotion both the left and right Speaker Select Switches (Item 2) are disabled and

the Speaker Select Disabled Indication LEDs (Item 3) will glow RED.

When this switch is in the SELECTED position, channel selection defaults to the settings as selected by the left and right

Speaker Select Switches (Item 2) and the left and right Speaker Select Disabled Indication LEDs (Item 3) will be unlit.

SDI Group Select Switch

This 4-position rotary switch allows the operator to choose HD/SD-SDI GROUP 1, 2, 3, or 4 for monitoring. The Subgroup (1

or 2) of each HD/SD-SDI GROUP is selected using the SDI Subgroup Select Switch (Item 17, page 10).

Note that the Input Source Select Switch (Item 6) must be set to 2-SDI in order for the selected HD/SD-SDI signals to be actively

monitored.

Volume Control Pot

This controls the loudness of the audio reproduced by the internal speakers or connected headphone. Clock-wise rotation of

this control increases the loudness of the monitored audio.

NOTE: Throughout this manual, the following terms are used to refer to Serial Digital (SDI) signals:

• SD-SDI = refers only to standard SDI (270 MB/s).

• HD-SDI = refers only to high-definition SDI (1.5 GB/s).

• HD/SD-SDI

or SDI = refers to either standard SDI (SD-SDI, 270 MB/s) or high defintion SDI (HD-SDI, 1.5 GB/s)