Digigram PCX 924 Manuel utilisateur

PCX924

Digigram

User’s Manual

Professional Audio Card

Digigram

No portion of this manual may be reproduced without prior written consent from

Digigram. The copyright protection claimed here includes photocopying,

translation and/or reformatting of the information contained in this manual.

Digigram is not responsible for errors and omissions and reserves the right to make

improvements or changes without prior notice.

Digigram and Xtrack are registered trademarks of Digigram. PCXpocket,

PCXtools and PCX Designer Kit are trademarks of Digigram. Other trademarks

are property of their respective holders.

INFORMATIONFORTHEUSER

This device complies with part 15 of FCC rules. Operation is subject to the

following two conditions: (1) This device may not cause harmful interference,

and (2) This device must accept any interference received, including

interference that may cause undesired operation.

This equipment has been tested and found to comply with the limits for a CLASS

B digital device, pursuant to Part 15 of the FCC Rules. These limits are

designed to provide reasonable protection against harmful interference in a

residential installation. This equipment generates, uses, and can radiate radio

frequency energy and, if not installed and used in accordance with the

instructions contained in this data sheet, may cause harmful interference to

radio and television communications. However, there is no guarantee that

interference will not occur in a particular installation.

If this equipment does cause harmful interference to radio or television reception,

which can be determined by turning the equipment off and on, the user is

encouraged to try to correct the interference by one or more of the following

measures:

• reorient or relocate the receiving antenna

• increase the separation between the equipment and the receiver

• connect the equipment into an outlet on a circuit different from that of the

receiver

• consult the dealer or an experienced audio television technician.

NOTE: Connecting this device to peripheral devices that do not comply with

CLASS B requirements or using an unshielded peripheral data cable could

also result in harmful interference to radio or television reception. The user is

cautioned that any changes or modifications not expressly approved by the

party responsible for compliance could void the user’s authority to operate this

equipment. To ensure that the use of this product does not contribute to

interference, it is necessary to use shielded I/O cables.

EMC: This card has been tested and found to comply with the following standards:

· International: CISPR22 Class B.

· Europe: EMC 89/336/CEE (1992) specifications.

· United States: FCC Rules-Part 15-Class B (digital device).

In order to guarantee compliance with the above standards in an installation, the

following must be done:

· Connectors must have a conductive shell.

· Cables must be shielded and their shield must be tightly connected to the

shell of the connectors.

· A good contact must exist between the bracket and the PC frame.

PCX924

User’s Manual

OVERVIEW

Features

· Audio card for PCI bus.

· Two analog mono inputs.

· One digital stereo input.

· One digital sync input.

· Two analog mono outputs.

· One digital stereo output.

· One stereo headphone output.

· Two general purpose inputs.

· Two general purpose outputs.

· One LTCinput.

Hardware requirements

· One card slot, PCI 2.1 compliant.

· One available IRQ line.

Software requirements

· Digigram npRuntime version 5.31 or higher (includes Wave driver).

Available options

· Analog breakout cable

· Digital breakout cable

HARDWAREINSTALLATION

Installing the card

Check for a free PCI expansion slot and gently insert the card. Press down to

set it firmly into the slot and tighten the screw.

Interrupt request

The Interrupt Request (IRQ) number is set up at start-up by the PCI PnP

BIOS. Be sure there is at least one IRQ resource available.

I/O address

Addresses are set up at start-up by the PCI PnP BIOS.

Digigram

Inter board link cable

Boards used in synchronous mode must be connected by an inter-board cable

(pin to pin cable). The two switches near the connector must be set on one

card in a set of cards linked by an inter-board cable. For one single PCX card,

the two switches must be ON.

Thermal issues

Under heavy use, temperature may increase. Therefore, cards should be

installed vertically and an additional fan in front of the cards may be

necessary.

Input adjustments

Input impedance can be selected by the bank of two switches SW1:

· 600Ohms : All two switches ON

· High (> 10kOhms) : All two switches OFF

PCX924

User’s Manual

SPECIFICATIONS

Audio inputs

Analog line inputs

• 2 balanced analog line inputs (can be used with unbalanced signals).

• switch selection of maximum input level : +22dBu (Line /+8dBu (CD)

• switch selectable input impedance: 600Ohms or >10 kOhms

• 24 bits analog to digital converters (64 x oversampling delta-sigma)

• input level adjustment: software control

Digital inputs

• 1 AES/EBU or S/PDIF. Transformer coupled for sync or for record (24 bits

available).

• 1 AES/EBU or S/PDIF. Transformer coupled for record only (24 bits

available). Sync must be provided by digital input #1.

Audio outputs

Analog outputs

• 2 balanced analog outputs (can be used as unbalanced).

• maximum level: +22dBu (software adjustable)

• output impedance < 100Ohms.

• 24 bit digital to analog converters (64 x oversampling delta-sigma).

• output level adjustment: down to - 91.5dBu by 0.5dB steps.

Digital output

• 1 AES/EBU or S/PDIF. Transformer coupled (24 bits available).

• synchronization with digital input complies with AES 11

Headphone output

• 3.5mm TRSstereo jack

Processing

Processing power is provided by a Motorola 56002 DSPassociated with

384 kbytes of high speed RAM.

Digigram

Miscellaneous

LTC input

• Level: -20 dBu min, +6dBu max, speed range: +-10% nominal

General Purpose Interface

• 2 inputs for dry contact (5VCC / 10mA) do not apply power.

• 2 independent contacts, free of power

Analog performance

• Sampling frequency:

8, 11.025, 16, 22.05, 24, 32, 44.1, 48 kHz available

(complying with AES-11)

• Signal / Noise ratio (un-weighted): better than 93 dB.

• Total Harmonic Distortion + Noise (un-weighted): better than - 90 dB

(0.003%) with 1kHz signal at -1 dB FS (+21 dBu).

• Frequency response (20Hz/20kHz): ± 0.1 dB .

• Difference in phase (20Hz/20kHz): 0.2° / 2°

• Interchannel isolation: better than - 95 dB

Characteristics measured at 48 kHz sampling frequency, linear record + playback.

Physical

•Card designed for PCI bus. 176 mm length, 99 mm height

Power consumption (typical)

•+5 V: 500mA, + 12 V: 200mA, - 12 V: 100mA

PCX924

User’s Manual

LAYOUTANDCONNECTIONS

Layout

Connectors

J1 - Headphone (3.5 mm TRSfemale jack)

J2 - Analog Audio connector. (Sub-D 15, female)

Digigram

SW1 J4 SW2 J5

Contact Signal

sleeve ground

tip left channel

ring right channel

pin # Signal pin # Signal

1R Out + 9R Out –

2GND 10 L Out +

3LOut – 11 GND

4GND 12 GND

5GND 13 R In +

6R In – 14 GND

7L In + 15 L In –

8GND

PCX924

User’s Manual

J5 - Interboard sync connector

Cable available from Digigram upon request.

Switches

SW1 - Input impedance (all switches must be set together)

SW2 - Inter board sync switch (all switches must be set together)

Options : Analog and digital break out cables are available on request.

pin # Signal pin# Signal

1GPI Out 1 A 9GND

2AES/EBU IN 2 – 10 LTC IN

3AES/EBU IN 2 + 11 GPI Out 1 B

4AES/EBU SYNC/ IN 1 – 12 GPI Out 2 A

5AES/EBU SYNC/ IN 1 + 13 GPI Out 2 B

6GPI Input 2 14 AES/EBU OUT+

7GND/ GPI Input Common 15 AES/EBU OUT –

GPI Input 1

Pos. input impedance

OFF > 10 kOhm

ON 600 Ohm

Pos. Description

OFF Slave card

ON Master card

pin # Description

1Left

2, 3 Ground

4Right

J3 - Digital connector (Sub-D 15 High density, female)

J4 - CDinput connector

SCHEMATIC DIAGRAM

Digigram

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