Grass Valley ADX-1881 User Manual

ADX-1881

Description

The ADX-1881 is a high-quality AES de-embedder designed to extract eight (8) 24-bit 48 kHz digital audio signals, Ancillary time code (ATC), longitudinal time code (LTC) and ancillary data from a single SMPTE 292M HDSDI or SMPTE-259M-C SD-SDI signal. The ADX-1881will output audio silence with a loss of the input signal. A delay of up to 6 fields can be added to the audio. The ADX-1881 has a built-in audio test tone signal. The ADX-1881 provides automatic input format detection as well as automatic equalization. A serial data signal (RS-422) output is available to provide Dolby E metadata output or simply to output a serial RS422 signal. Two GPI outputs will recreate the GPI activated by the AMX card. By combining AMX and ADX cards at each end a full duplex link may be established.

The ADX-1881 is designed for the DENSITÉ frame.

ADX-1881 HD/SD 8 AES Disembedder

Guide to Installation and Operation

M683-9900-100

July 2005

Audio - Features

• 8 AES outputs: either 110 Ω balanced or 75 Ω unbalanced, depending on rear panel in use

• Selectable audio delay of up to 3 frames in ½ frame steps

• 24-bit digital audio disembedding

• Audio silence output on loss of video input

• Left/Right channels swappable for each AES output

• Selectable routing of audio groups to AES outputs

• Co-phased audio outputs

• Dolby-E compatible

• Monitor selector for Densité frame monitoring switch

bridge (MSB) and analog, stereo audio output

• Analog monitor output muting for non-linear PCM AES signals

Disembedding Other Signals - Features

Video - Features

• Serial HD/SD-SDI input with automatic equalization for up to 110m/250m of cable

• Automatic detection of video input format

• Two pass-through HD/SD-SDI video outputs

FUNCTIONAL BLOCK DIAGRAM

• Linear Time Code (LTC) output translated from Ancillary Time Code (ATC) data or Digital Vertical Interval Time Code (DVITC)

• RS-422 serial data output signal reconstructed from ANC data inserted by the embedder (including Dolby metadata)

• Two opto-isolated GPI data output signals reconstructed from ANC data inserted by the embedder

SPECIFICATIONS

VIDEO INPUT

Video Signal: HD/SD-SDI SMPTE 292M/SMPTE 259M (see list of supported formats below) Embedded audio as per SMPTE

299M/SMPTE 272M

Embedded ATC/DVITC as per

SMPTE RP 188/SMPTE 266M

Embedded RS-422 & GPI as per

SMPTE 291M (with proprietary DID) Cable Length: up to 110m/250m of Belden 1694A Return Loss: >15 dB, 5 MHz to 1.5 GHz/270MHz

AUDIO AES-3id OUTPUT

Signal: AES-3id (SMPTE 276M) Level: 1.0 Vp-p ±10% Impedance: 75 Ω unbalanced

……(continued)

ADX-1881 Page 1 of 12

ADX-1881 HD/SD 8 AES Disembedder

PROCESSING PERFORMANCE

Panel

Guide to Installation and Operation

SPECIFICATIONS(cont’d)

AUDIO AES SIGNAL

Sampling Rate: 48kHz synchronous

LTC SIGNAL OUTPUT

Signal: Reconstructed LTC from ATC/DVITC Impedance: Level: 1.0 Vp-p

RS-422 SIGNAL OUTPUT

Signal: RS-422 Rate: Reconstruction of signal input to

GPI SIGNAL OUTPUT (2)

Signal: Opto-isolated, common emitter Forward voltage 30V max Reverse voltage 5V max Rate: DC- to 250 Hz

VIDEO OUTPUT (Input active loop-through) Video Signal: HD/SD-SDI SMPTE 292M/SMPTE

Return Loss: >15 dB up to 1.5 GHz/270MHz dB Wideband Jitter: < 0.2 UI p-p

< 55Ω source, unbalanced 1kΩ load

embedder (38,400 or 115,200 bauds)

259M

Signal Path: 10-bit video / 24-bit audio Audio Processing Delay: Audio Delay: Up to 3 video frames (1/2 frame steps) ATC/DVITC Delay: None, 1, 2,or 3 frames before

RS-422 Processing Delay:

GPI Processing Delay:

Test Signals: Audio - 1 kHz tone (R steady, L

Power: 9.5 W

Note ‡‡: Applicable to combinations of AMX-1881and ADX1881

List of supported formats:

1920 x 1080/59.94/I 1920 x 1080/50/I 1920 x 1080/29.97/P 1920 x 1080/25/P 1920 x 1080/24/P 1920 x 1080/23.98/P 1920 x 1080/29.97/PsF

(detected as 1920 x1080/59.94/i)

ADX-1881-75-DRP

875 µs (combined embedding and extraction ‡‡)

translation to LTC 500 µs max. (combined embedding

and extraction ‡‡) (1 frame in metadata mode) 4 video lines (combined embedding and extraction ‡‡)

pulsed) -18dBFS (EBU R49, R68) LTC – 10 second loop starting at

23:59:00:00

1920 x 1080/25/PsF

(detected as 1920 x 1080/50/i)

1920 x 1080/24/PsF 1920 x 1080/23.98/PsF 1280 x 720/59.94/P 1280 x 720/50/P 525 (NTSC) 625 (PAL)

ADX-1881Breakout

ADX-1881

ADX-1881 Front card edge

Page 2 of 12 ADX-1881

Select

Status

SELECT button

Status LED

(Note: female 15-pin connectors on both panels)

ADX-1881 Rear Connector Panels

INSTALLATION

Make sure the following items have been shipped with your ADX-1881. If any of the following items are missing, contact your distributor or Miranda Technologies Inc.

* ADX-1881 HD/SD 8 AES Disembedder * ADX-1881-75-DRP rear panel * ADX-1881 rear panel * Densite-ext-mount external mounting bracket (one per

frame)

The ADX-1881 and its associated rear connector panel must be mounted in a DENSITÉ frame. It is not necessary to switch off the frame’s power when installing or removing the ADX-1881. See the DENSITÉ Frame manual for detailed instructions for installing cards and their associated rear panels.

The ADX-1881 has multiple inputs and outputs, and making space for all the necessary connectors at the rear of the frame requires a double-width rear panel.

Overview

The DENSITÉ frame incorporates a central controller card, located in the center of the frame, which is equipped with an LCD display and a control panel. The controller handles error reporting and local and remote control for all cards installed in the frame. The display and control panel are assigned to the card in the frame whose SELECT button has been pushed.

Status Monitor LED

The status monitor LED is located on the front card-edge of the ADX-1881 module, and is visible through the front access door of the DENSITÉ frame. This multi-color LED indicates module status by color, and by flashing/steady illumination, according to the following chart (which also indicates fault reporting for this card on the DENSITÉ frame’s serial and GPI interfaces).

REPORT COLOR (F=flashing) SERIAL GPI G Y R FR No errors No signal No rear Test mode

µ : Factory default. User configurable

A “Flashing Yellow” Status LED indicates that the SELECT button on the front panel has been pushed, and the controller display and control panel are now assigned to this card.

ADX-1881 HD/SD 8 AES Disembedder

Guide to Installation and Operation

When a double–width rear panel has been installed, the ADX-1881 must be installed in the right-most of the two slots covered by the panel in order to mate with the panel’s connectors. If it is placed in the wrong slot, the front panel LED will flash red. Move the card to other slot for correct operation. No damage will result to the card should this occur.

In addition, the ADX-1881 requires an external mounting bracket and breakout panel. The breakout panel is connected to the rear panel via a multi-conductor cable fitted with two male connectors. The ADX-1881’s inputs and outputs occupy both panels.

See the annex at the end of this manual for the specification of the cable to interconnect the rear panel and the breakout panel.

The LED color assignments for some error conditions can be reconfigured by the user (see the chart and menu for details).

User Interface

Pushing the SELECT button will cause the on-card STATUS LED to flash yellow, and the card identification and the current status will be shown on the controller card’s display. The STATUS LED will revert to it’s normal state upon a second push of the button, or after a short delay. The messages which may appear are shown in the top line of the menu chart on page 3

Example :

SELECT button pushed twice when there is no input signal connected to the rear panel and the LED is steady red:

A D X - 1 8 8 1

Use the local control panel to access the detailed status report shown in the STATUS menu on page 3.

Operating Parameter Adjustment

The ADX-1881 has operating parameters which may be adjusted at the controller card interface. After pressing the SELECT button on the ADX-1881 card, use the keys on the local control panel (described in the Controller card manual) to step through the displayed menu and adjust the parameters. The menus are shown below.

A LN O S I G N

ADX-1881 Page 3 of 12

ADX-1881 HD/SD 8 AES Disembedder Guide to Installation and Operation

ADX-1881 Menus

STATUS

USER PRESET

(continued)

NO REAR/ NO SIGNAL/ 720p50/ 720p60/ 720p59.94/ 1080p24/ 1080p24sF/ 1080p23.98/ 1080p23.98sF/ 1080p25/ 1080i50/ 1080p29.97/ 1080i59.94/ 625/ 525

AUDIO GROUPS

EMBEDDED TC

EMBEDDED RS422

EMBEDDED GPI

AES OUT 1

AES OUT 2

AES OUT 3

AES OUT 4

AES OUT 5

AES OUT 6

AES OUT 7

AES OUT 8

NONE / 1234

NONE / PRESENT

NONE / 12

BITS

MODE

EMPHASIS

USE

ENCODING

Same as AES OUT 1

LOAD

SAVE

[ USER 1, USER 2, USER 3, USER 4, USER 5 ]

16 BIT / 20 BIT / 24 BIT / OTHER

N.I. / 2 CHANNEL / 1 CHANNEL / P/S / STEREO

N.I. / NONE / 50/15-us / J.17

CONSUMER / PROFESSIONAL

LINEAR PCM / NON PCM

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