Apogee AD-8000 Specifications download pdf (Page 16)

AES 8 AMBus Card

The AD-8000 comes equipped with a single XLR female socket for a 2-channel AES/EBU input. The AES

AMBus card provides an

additional eight channels of AES/EBU I/O capability. This card also incorporates bit-

splitting, like the ADAT and TDIF cards, to allow six channels of 20-bit or four channels of 24-bit audio to be

recorded on a 16-bit 8-channel system. The AES Card is therefore ideal for use with machines such as the Sony

PCM-800 and as a method of interfacing with any system that offers AES/EBU interfacing, such as Sonic

Solutions or SADiE systems. The AES AMBus card terminates in a DB-25 female connector which carries the dig-

ital data. This connector is wired to the same pinout as Yamaha AES interfaces and the same cables may be used

as an alternative to the AES Interface breakout cable available from Apogee.

DIGI 8 Plus (Pro Tools) AMBus Card

This card is used to interface the AD-8000 to Digidesign’s Pro Tools

, Pro Tools/24 or Sound Designer

cards. With this card and the 8-channel D/A card installed, the AD-8000 replaces Digidesign’s 882, 888 and 888-

24 I/O converter units, and adds many more features. It is necessary to have Digidesign’s Digital I/O card

installed in your computer, connected to the AMBus card via the special cable supplied with Digidesign’s card.

For full details on cabling and on how to use this card, see the DIGI 8 AMBus card documentation. The card

includes Slave Clock in and out for use in conjunction with Digidesign interfaces where necessary.

SDIF AMBus Card

This card (available first quarter 1999) allows the AD-8000 and other AMBus-equipped devices to commu-

nicate with Sony multitrack machines and other devices utilizing the Sony Digital Interface 2 (SDIF II) standard.

The card is available with an optional wiring harness for Sony multitracks which enables a series of AD-8000s to

be interfaced with the recorder. Sony machines such as the 3348HR provide 24-bit recording capability and can

be ordered without converters, making it a simple matter to use the AD-8000 for this purpose.

Fiber DX AMBus Card

This card enables eight channels of digital audio data to be sent or received via AT&T glass fiber optical

cable. The protocol used is in fact similar to that employed by ADAT recorders. Instead of the commonly-used

plastic optical fiber, true glass fiber is used. This has a range of over 5 kilometers (over 3 miles), making the

Fiber DX card ideal for transferring digital data between rooms, floors or even buildings.

Analog Option Cards

Installing a D/A Option Card

To install a D/A Option card, refer to the section on installation at the end of this manual (p33). This opera-

tion should be carried out only by technically-qualified personnel.

Optional Video Sync Module

This card enables the AD-8000 to synchronize to a wide range of external video signals (see section below).

Video sync is input at the Word Clock In BNC socket on the rear of the unit. Instructions on installing this card

are provided in the installation section at the end of this manual. This operation should be carried out only by

technically-qualified personnel.

Synchronizing the AD-8000

Internal Sync

The AD-8000 has two high-precision crystal oscillators for internal sync generation. One is cut for 48 kHz,

and the other for 44.1 kHz. With a video sync module, it is also possible to “pull” these frequencies by ± 0.1%,

if desired.

External Sync

The microprocessor on the AD-8000 controls the sync circuitry; hence, the sync section is “smart”. Sync

options that are not available will be skipped on the front panel menu. For example, if no AMBus cards are pre-

sent, then the AMB A, AMB B, AMB C, and AMB D sync selections will be disabled.

AD-8000 Operating Manual

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Apogee AD-8000 Specifications Page 16

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