APOGEE AMBUS-SDIF EXPANSION CARD

Multimedia Bus expansion card for the Apogee AD- 8000 8-channel
24-bit digital audio conversion system

THE SDIF-2 AMBUS CARD is an optional Apogee Multimedia Bus expansion card
for the Apogee AD- 8000 8-channel 24-bit digital audio conversion system and other
AMBus-equipped systems, enabling eight channels of audio data to be transferred
between the AD-8000 and a digital system, such as DASH open-reel digital recorders,
that supports the Sony SDIF-2 interface format.
Owners of DASH-format open-reel digital multitrack machines such as the Sony 3324,
3348 and 3348HR can now enjoy the benefits of enhanced Apogee quality digital audio
conversion, thanks to the AMBus SDIF-II card and associated wiring harness.
The Sony 3348HR, for example, can be purchased without converters at a substantial
cost saving, making the AD-8000 particularly attractive for potential purchasers ? especially
as the regular Sony converters offer only 20-bit operation. Purchasing AD-8000 units with
the SDIF card, on the other hand, delivers full 24-bit resolution.
The SDIF card has an associated wiring harness that enables up to six AD-8000 converter
systems to be interfaced with a multitrack recorder.
The SDIF card also supports Apogee Bit-Splitting, which uses multiple 16-bit tracks to
store high-resolution data. This means that existing 3324 and 3348 owners can enjoy 20-
or 24-bit resolution: the 3324 can record 12 tracks of 24-bit or 18 tracks of 20-bit, while
3348 owners can handle 24 tracks of 24-bit or 36 tracks of 20-bit.
Utilizing Apogee?s AMBus structure built into the AD- 8000, you can easily interface the
AD-8000 to the vast majority of industry standard interfaces such as ADAT, TDIF, ProTools,
and many others, performing multiple format conversions between installed interfaces and
distributing signals to several different types of device simultaneously.
Apogee Bit-Splitting (ABS)

The SDIF-2 card includes two ?bit-splitting? formats which split high resolution signals among
multiple 16-bit data paths. Thus the SDIF-2 card supports the following digital audio formats:
1. 8 channels of 24 bit data (16 or 20 bits with UV22, and bit-splitting OFF)
2. 4 channels of 24 bits each (ABS ?4/24?, Rane?s PaqRat format) formatted as eight 16-bit
data paths
3. 6 channels of 20 bits each (ABS ?6/20? format) formatted as eight 16-bit data path.
Full PaqRat capability is provided in 4/24 mode, enabling you to create or replay recordings that
are completely compatible with Rane?s PaqRat equipment or with the PaqRat-compatible mode
of the enhanced ?Platinum Edition? Apogee AD-1000.
The 4/24 mode (four channels of 24 bits on eight 16-bit data paths) delivers the first 16 bits of a
24-bit signal on the first 16-bit path, and the remaining bits on a subsequent path along with a
marker tone.
An additional feature of the 4/24 mode is the ability to transfer eight simultaneous 24-bit channels
by using two 8-channel 16-bit paths (and thus two SDIF-2 cards).
The 6/20 mode allows six channels of 20-bit data to be sent via eight 16-bit paths ? ideal for 5.1
mixing for DVDVideo release, where the 20/48 format is very common.

The new Fostex HP-A3 is the perfect DAC for Computer Audio. This high quality unit features 32bit D/A Conversion with an integrated headphone amplifier exclusively designed to get the most from and PC audio set-up.

Why settle for 'built-in' D/A conversion when you can drastically improve the quality of your audio with a Fostex HP-A3?

• USB Bus power without using unwanted AC adapter
• Works with up to 24bit/96kHz audio source
• Exclusive PLL power supply is built in to reproduce the stable electrical supply
• High quality analog headphone amp to drive any type of headphones
• Equipped with hgih-grade AKM 32bit(*) DAC AK4390
• Condensers and OP amp designed exclusively for audio products
• USB / Digital (Optical) input selector
• Headphones / RCA (Analog) output selector
• Doubles as D/D converter from USB digital audio to Optical
• An USB/AC adapter from the shelf can be used for use as an Optical / Analog converter

Note: When using the USB input, the sampling frequency is fixed at 96kHz.  Audio file with Fs 32k/44.1k/48kHz will be reproduced by upsampling to 96kHz and the S/PDIF Out is also fixed at 96kHz.

Input
USB port sampling frequency 16bit-24bit/96kHz
Interface: USB full speed
Digital Connector: optical, square
Format: S/PDIF (32kHz - 96kHz)

Output
Phones Connector: Stereo phone
Max Output: 100mW (32-ohm loaded)
THD: less than 0.01% at 1kHz, 32-ohm loaded, 100mW
Frequency response: 20Hz / 20kHz +-0.3dB (32ohm loaded, 100mW)
Analog Connector: RCA Pin
Reference output level -10dBV
THD: less than 0.01% at 1kHz
Frequency response: 20Hz / 20kHz +-0.3dB
Digital Connector: Optical, square
Format S/PDIF (32kHz - 96kHz)

General
Power: DC5V (via USB port)
Power Consumption: 2.5W
Accessories: 1 x USB cable (1.0m), 4 x rubber foot, manual
Dimensions: 108mm(W) x 36mm(H) x 140mm(D)
Weight: approx. 450g

Inputs Analog Inputs 2 balanced inputs on 2 female XLR connectors Connect microphones via external mic preamps Connect guitars via DI boxes or external mic preamps Connect keyboards directly to Symphony I/O Digital Inputs AES IN: Stereo input on 1 female XLR connector Optical IN: Supports ADAT, SMUX & S/PDIF ADAT: 8 channels 44.1-48 kHz on 1 Toslink connector SMUX: 4 channels 88.2-96 kHz on 1 Toslink connector S/PDIF: 2 channels, up to 96 kHz on 1 Toslink connector S/PDIF Coax IN: 2 channels, up to 192 kHz on 1 RCA connector Outputs Analog Outputs 6 balanced outputs on 1 DSUB 25-pin connector Digital Outputs AES OUT: Stereo output on 1 male XLR connector Optical OUT: Supports ADAT, SMUX & S/PDIF ADAT: 8 channels 44.1-48 kHz on 1 Toslink connector SMUX: 4 channels 88.2-96 kHz on 1 Toslink connector S/PDIF: 2 channels, up to 96 kHz on 1 Toslink connector S/PDIF Coax OUT: 2 channels, up to 192 kHz on 1 RCA connector

A/D converter card for ISA 428.
 
Technical Info:
THD+N: -110 dB (A-weighted) with -4dBfs input signal at .997kHz
Crystal oscillator accuracy: +/- 15 ppm
Clock Jitter 44.1kHz-192kHz:

The Tascam LA-40 MKIII has been primarily designed to provide matching capabilities between professional equipment and semi-professional or consumer equipment. It consists of four RCA inputs and outputs (–10 dBV, unbalanced) as well as four XLR inputs and outputs (+4 dBu/–20 dBu, balanced) which enable the user to connect for instance four tracks of a multitrack recorder (ins and outs) to a balanced mixer ensuring optimum level and impedance matching. Also, a switch matrix allows channels to be linked, utilizing the converter as a distribution amplifier for splitting signals to multiple recorders, or for multizone sound routing applications.

Switches on the bottom panel allow to select a nominal level of +4 dBu or –20 dBu for each channel and ±12 dB trim pots on the front panel make perfect level matching easy. LEDs on the front panel indicate signal presence for each channel. The LA-40 MKIII has also ground lift switches for each channel and a combined master switch to avoid ground loops.
Main Features

    * 4 channels with unbalanced RCA inputs and balanced XLR outputs
    * 4 channels with balanced XLR inputs and unbalanced RCA outputs
    * XLR nominal level selectable between +4 dBu and –20 dBu
    * Trim pots for each channel on front panel (±12 dB)
    * Signal LED for each channel

    * Ground lift switches for each channel and master switch
    * Distribution amplifier functionality: One mono input signal can be routed to all four output channels, or one stereo input signal can be routed to two channels each (RCA to XLR and XLR to RCA)
    * Internal power supply, no AC adapter needed
    * 1 U rack-mountable chassis

Specifications
Inputs and outputs (unbalanced to balanced)
Inputs         4 RCA jacks (unbalanced)
  Input impedance         23 kOhm (when all INPUT LINK switches are OFF)
5.7 kOhm (when all INPUT LINK switches are ON)
  Nominal input level         –10 dBV, ±1 dB
  Maximum input level         +4.8 dBV
  Indicator detection level         –36 dBV or more (OUTPUT LEVEL switch set to +4 dB or –20 dB)
Outputs         4 XLR-type connectors (balanced, Pin 1 = ground, Pin 2 = hot, Pin 3 = cold)
  Output impedance         94 Ohm
  Nominal load impedance         10 kOhm
  Minimum load impedance         600 Ohm
  Nominal output level         +4 dBu, ±1 dB (OUTPUT LEVEL switch set to +4 dB)
–20 dBu, ±1 dB (OUTPUT LEVEL switch set to –20 dB)
  Maximum output level         +23 dBu
Inputs and Outputs (balanced to unbalanced)
Inputs         4 XLR-type connectors (balanced, Pin 1 = ground, Pin 2 = hot, Pin 3 = cold)
  Input impedance         54 kOhm (when all INPUT LINK switches are OFF)
13.5 kOhm (when all INPUT LINK switches are ON)
  Nominal input level         +4 dBu, ±1 dB (INPUT LEVEL switch set to +4 dB)
–20 dBu, ±1 dB (INPUT LEVEL switch set to –20 dB)
  Maximum input level         +30 dBu (INPUT LEVEL switch set to +4 dB)
+8 dBu (INPUT LEVEL switch set to –20 dB)
  Indicator detection level         –22 dBV or more (INPUT LEVEL switch set to +4 dB)
–46 dBV or more (INPUT LEVEL switch set to –20 dB)
Outputs         4 RCA jacks (unbalanced)
  Output impedance         200 Ohm
  Nominal load impedance         10 kOhm
  Minimum load impedance         1 kOhm
  Nominal output level         –10 dBV, ±1 dB
  Maximum output level         +18 dBV
Audio performance
TRIM range         ±12 dB
S/N ratio (at nominal levels)         90 dB(A) (20 kHz LPF)
87 dB(A) (20 Hz HPF and 20 kHz LPF)
Total harmonic distortion
(1 kHz, at nominal levels)         0.005 % or less
Frequency response (at nominal levels)         20 Hz – 100 kHz, ±3 dB
Crosstalk
(1 kHz, nominal levels, 600 Ohm load)         –90 dB
Other specifications
Power requirements         100–240 V AC, 50/60 Hz
Power consumption         6 W
Dimensions (W x H x D)         483 mm x 44 mm x 280 mm
Weight         3 kg

Input MADI: 1 x BNC, 1 x optical
Output MADI: 1 x BNC, 1 x optical
Input ADAT optical: 8 x TOSLINK, 24-Bit, Bitclock PLL
Output ADAT optical: 8 x TOSLINK, 24-Bit
Input word clock: BNC, Signal Adaptation Circuit (functional from 1.2 Vpp input signal), switchable termination
Output word clock: BNC, low-impedance driver stage, 4 Vpp into 75 Ohms, short-circuit-proof
MIDI input and output: via two 5-pin DIN jacks
Sync sources: MADI, ADAT optical, word clock, internal
Varipitch: by input signal or word clock
Sample rates: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, variable (Sync/word clock)
Sample rate range: MADI: 32 kHz - 96 kHz, word clock: 27 kHz-105 kHz, ADAT: 33 kHz - 57 kHz
Jitter: Internal clock Jitter suppression on external clock: circa 30 dB (2.4 kHz)
Jitter sensitivity: all PLLs operate even at 100 ns Jitter without problems
Power supply: internal switching mode ps, 100 V-240 V AC, 50-60 Hz, 10 Watts
Dimensions: 483 x 44 x 200 mm