Apogee PSX-100 Teknik Özellikler - Sayfa 2

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...The 2-channel conversion solution.

POGEE ELECTRONICS

The Apogee PSX-100

has

reputation

for

at a glance.

producing the very best sounding

•

Two channels of Apogee's true 24-bit A/D and D/A

digital conversion products avail-

conversion with 117 dB dynamic range

able. You might also think of us as

•

Superb Apogee quality at 44.1, 48, 88.2 and 96 kHz

being quick off the mark. But in

•

All the most common interfaces built in:

fact, we think very carefully

AES, ADAT, TDIF, S/PDIF (coax and optical)

before we release a new product.

•

Apogee Bit-Splitting ™ allows 16-bit recorders to be

That's how it was when we

used to store 24-bit and even 24/96 kHz signals!

came to design our first 24-bit,

•

Three ﬂexible operating modes:

96kHz sampling-rate conversion

Conﬁdence Monitor, Digital Copy, Analog Monitor .

system: the PSX-100.

•

Apogee Soft Limit

helps you record at a

Anyone can make 24 bits dance

higher level without overs

up and down 96,000 times a

•

Apogee's enhanced UV22HR ™ translates 24-bit

signals to 20 or 16 bits with minimal quality loss

second. The question is, does it

•

Easy-to-read 2-channel LED bar metering

sound any better? In many cases,

•

User-deﬁnable over detection (1-4 digital FS)

the answer is no – and to our

•

AES/EBU distribution ampliﬁer capability

engineers, there was no point

•

Balanced or unbalanced analog I/O

without a significant improve-

•

Gold-plated XLR jacks for analog and AES/EBU I/O

ment in the sound. So clock

•

RCA jacks for S/PDIF in and out

circuitry had to be even more

•

Two proprietary Apogee low-jitter master clocks

rigorously designed to minimize

•

Non-volatile storage of front panel settings

jitter.

Analog

components

•

Optional video sync module

required special characteristics to

•

Exclusive active self-balancing analog I/O

realize the performance we

specified. And much more.

lution 2-channel converter that is capable of delivering the

We wanted to give our first 96kHz system all the features

promise of high-quality audio disc and mastering formats. And

needed to make it truly indispensable. AES, S/PDIF, ADAT and

when you buy an Apogee, all your money goes into making that

TDIF I/O for highest flexibility. Apogee Bit-Splitting for 24-bit,

conversion meet the highest standards available today.

96kHz mastering to 16-bit, 48kHz MDMs. UV22HR for flawless 16-

Introducing... The Apogee PSX-100

and 20-bit output. Soft Limit for maximum level without overs.

Digital copy, confidence and analog monitoring modes. Sync to

The PSX-100 takes Apogee's digital audio conversion expertise to

word clock and optional video.

a new level of quality and performance. It represents our first

The result: a total stereo conversion solution. Fully indepen-

high-sample-rate converter, offering 24-bit resolution at 88.2 and

dent A/D and D/A converters in a single 1U package .

96kHz sampling rates in addition to 44.1 and 48 kHz.

Apogee quality. At the Heart of Digital Audio.

Benefits of

Outboard

24-bit, 96kHz A/D-D/A conversion:

Conversion

The PSX-100 is Apogee's first high resolution,

high sample-rate conversion system, featuring

The sole reason that Apogee

true 24-bit conversion and impressive

Electronics Corporation exists is

technical specifications (see back cover) .

to make digital audio sound

Minimal THD+Noise. Stunning dynamic range.

And a frequency response that's flat all the

better.

way across the band. And it's an Apogee –

From the very beginning, we

it sounds great!

knew that digital audio was by no

means free of problems: but we

were sure that those problems

could ultimately be solved.

The introduction of new, high

sample rates for DVD-Video and

DVD-Audio authoring and other

applications has made digital

audio more complex, and the

manufacture of high-quality, high-

resolution converters is now

more challenging than ever

Sample Rate & Sync Options:

before.

88.2 and 96kHz sample rates make the PSX-

Apogee has risen to the chal-

100 a star performer, locking to ultra-stable

lenge. We have taken every step

crystal or external digital inputs or word

clock. An optional video sync card allows the

necessary to produce a high-reso-

unit to lock to common video standards.

Analog Inputs & Outputs:

features line-level analog I/O on gold-plated

XLR connectors for optimum quality. DIP

switches allow the selection of pin 2 or 3 hot,

and the inputs and outputs can be set

separately for either professional or

consumer level operation.

PSX-100 Functional

Block Diagram

The

PSX-100

consists of four main sections:

Digital Inputs, Digital Outputs, A/D Converter

and D/A Converter, plus additional functions

such as aux outputs, UV22HR and Soft Limit.

The way in which the main blocks are inter-

connected is determined by the current mode

of operation.

Confidence Monitor

mode, the A/D and

D/A are essentially separate, the D/A deriving

AES/EBU Auxiliary Output:

its input from the digital inputs and the A/D

Out is a digital AES/EBU output providing a

driving all the main outputs.

"clean feed" from the system. It can act as an

Digital Copy

takes the selected digital input

additional parallel AES/EBU output for

distribution purposes, or it can be used to

and delivers it to all the unit's outputs, ana-

record, for example, a full-resolution 24-bit

log and digital. Ideal for digital copying and

mix while the other outputs are delivering

format conversion without repatching.

16- or 20-bit feeds with UV22.

Analog Monitor

mode takes the A/D output

and feeds it to all system outputs and to the

The PSX-100 2-channel, 96kHz, 24-bit converter.

D/A, which therefore monitors the conversion

carried out in the A/D section.

UV22HR Encoding:

Soft Limit:

Apogee's exclusive

Apogee's proprietary Soft Limit

and newly-enhanced UV22HR encoding

circuitry enables you to get maximum digital

process translates 24-bit signals flawlessly into

level without risking digital "overs".

the 20- or 16-bit domains. UV22 is standard in

the vast majority of US mastering houses: over

80% of US hit records are made with UV22.

Now any facility can enjoy the audible

improvements offered by this unique process.

(Not available at 88.2 & 96kHz sample rates).

Optical Output Selection:

Individual L-R Channel Muting:

44.1, 48,

The built-in

optical interfaces support both S/PDIF and

PSX-100 allows you to mute either left or right

ADAT protocols for maximum flexibility.

channels at the touch of a button, instantly

controlling the signal from the main digital

outputs.

Main AES/EBU inputs:

Optical I/O:

The PSX-100

Two inputs are

This interface can be front-

provided and can be individually selected

panel selected to offer either ADAT or S/PDIF

from the front panel. (Both connectors are

optical protocols. In ADAT mode, ABS track

used for 88.2/96 kHz operation.)

sets (including stereo at 96kHz on a 16-bit

48kHz machine!) may be output for recording,

and recombined for replay via the D/A or

transfer to other digital outputs.

S/PDIF Coaxial Input:

Dual AES/EBU Outputs:

The Aux

An industry-

standard RCA connector provides S/PDIF

XLR connectors deliver two main 2-channel

coaxial input capability.

AES/EBU outputs, ideal for making multiple

masters or for signal distribution. (Both con-

nectors are used for 88.2/96 kHz operation.)

Apogee Bit-Splitting (ABS):*

Multiple D/A Sources:

In addi-

tion to direct 24-bit interfacing, you can also

output or select S/PDIF coax or optical; ADAT;

use the PSX-100 to store high resolution data

TDIF or either of two AES inputs (one AES

on your existing 16-bit, 44.1/48kHz MDM. Use

input at 88.2/96kHz sampling). Synchronize

the PSX-100 to save 44.1/48kHz, 24-bit data on

the D/A to digital in or to the A/D sync source.

pairs of 16-bit tracks (PaqRat format) or even

store 24-bit stereo at 88.2/96kHz sample rates!

Advanced Metering System:

Digital Copy:

The

The PSX-

100 includes easy-to-read light-bar metering,

digital input is delivered to all the PSX-100's

including "over" indication with 2-second/infi-

outputs, digital and analog. Ideal for format

nite hold. User-defined "over" setting (1-4 con-

conversion, adding UV22 to existing program

secutive digital full-scale readings). Meter

material, and for maximum D/A flexibility.

either the A/D or D/A in "confidence mode".

Calibration mode with ±0.1 dB setup accuracy.

Word Clock In & Out:

Comprehensive Option Selection:

BNC connectors

allow word clock interfacing. In addition, the

10-way DIP switch allows "set-once" parame-

WC input socket can act as a video input

ters to be determined, such as analog input/

when the video option card is installed.

output level; pin 2/3 hot; 2-second or infinite

"over" indication; "over" definition (1-4 con-

secutive FS); ABS enable on AES input (for

PCM-800 etc); and special sync parameters.

S/PDIF Coaxial Output:

TDIF Interface:

Gold-plated

An industry-

standard RCA connector provides S/PDIF

provides interfacing with TDIF devices such as

coaxial output capability. At high sample rates

Tascam modular digital multitracks, consoles,

(88.2/96kHz), this socket provides a 44.1/48kHz

DAWs and digital audio PC cards which

S/PDIF output derived from alternate samples.

feature this kind of interfacing.

MDM Input Selection:

Monitor the A/D

When using the

PSX-100 with modular digital multitracks,

select the pair of tracks you want to listen to

(or the set of tracks for replaying a bit-split

source).

Level Trim:

In this mode, the selected

easy screwdriver adjustment of

A/D and D/A analog levels for instant

calibration and gain-structure alignment.

Linear Power Supply:

AC input is inter-

nally selectable and fused for international

voltages. Power feeds a super-smooth linear

power supply built around a true toroidal

transformer, minimizing interference to either

analog or digital circuitry and avoiding poten-

tial spikes and noise. A generously-specified

exposed heat sink (see cover) effectively con-

trols the temperature of the unit.

*Apogee Bit-Splitting for 96 kHz:

A DB-25 connector

Apogee's new ABS-96 technique allows you to

use your existing 16-bit, 8-track, 44.1/48 kHz

MDM for stereo 96 kHz mastering, in addition

to the existing 4/24 "PaqRat" mode which

allows 24-bit signals to be recorded on pairs

of 16-bit tracks.