Digigram ALP221e Bedienungsanleitung

User Manual – ALP221e

User Manual

ALP221e

Professional stereo sound card

December 2022

User Manual – ALP221e

TABLE OF CONTENTS

1. INTRODUCTION 4

2. IMPORTANT NOTICE 5

3. BOX CONTENTS 6

4 GENERAL CHARACTERISTICS 7

4.1 Main hardware characteristics 7

4.2 Main software characteristics 7

4.3 Routing audio streams in the card 7

5 REQUIRED CONFIGURATION 8

5.1 Required hardware conﬁguration 8

5.2 Necessary software conﬁguration under Windows 10

5.3 Necessary software conﬁguration under Linux 10

6 HARDWARE INSTALLATION 11

6.1 Preparing the card 11

6.2 Installing the card 11

6.3 State of internal LED 11

7 SOFTWARE INSTALLATION UNDER WINDOWS 12

7.1 Updating the driver version 13

7.2 Updating the ﬁrmware 13

7.3 Verifying the card installation 14

7.4 Presence of playback and recording devices 14

7.5 Card detected by the Digigram ALP-X Manager application 15

7.6 Card availability under ASIO 15

8 UNINSTALLING THE DRIVER UNDER WINDOWS 17

9 CONFIGURING THE CARD UNDER WINDOWS VIA THE ALP-X MANAGER APPLICATION 18

9.1 Sampling clock management 18

9.2 Managing input and output levels 20

9.3 Managing the routing and mixing of input signals 24

9.4 Creating, saving and loading setting sessions 26

9.5 Updating the ﬁrmware 26

9.6 Keyboard shortcuts 28

10 ASIO CONTROL PANEL for Windows 29

11 SOFTWARE INSTALLATION UNDER LINUX 31

11.1 Automatic installation 31

11.2 Building and installing the driver manually 31

12 SPECIFICATIONS 32

12.1 Conﬁguration 32

User Manual – ALP221e

12.2 Inputs 33

12.3 Outputs 33

12.4 Audio characteristics 33

12.5 Sample rate converter performance (SRC) 33

12.6 Connectors 34

12.7 Development environment 34

13 APPENDICES 35

13.1 ALP221e functional diagram 35

13.2 LED 36

13.3 Connectors and switches 37

13.4 Breakout cable diagram 38

13.5 Pinout of the breakout cable connector 38

User Manual – ALP221e

1. INTRODUCTION

This document describes the installation and use of the PCI Express DIGIGRAM ALP221e sound card

under Windows and Linux.

This stereo card is part of the ALP-X professional sound cards range, which also includes

multi-channel cards (4, 8 channels).

No part of this manual may be reproduced without the prior consent of Digigram. This reservation includes

photocopying, translating and/or reformatting the information contained in this manual.

Everything possible has been done to ensure the greatest accuracy, however Diagram cannot be held liable

for any error or omission and reserves the right to make modiﬁcations and improvements without prior

notice.

Digigram and the Digigram logo, and ALP221e are trademarks or brand names of Digigram Digital. All other

marks are owned by their respective companies.

User Manual – ALP221e

2. IMPORTANT NOTICE

Certiﬁcations

The product is currently being certiﬁed.

This product has been designed in accordance with the following standards:

●EMC Directive 2014/30/EU.

●FCC Rules Part 15, Subpart B.

To ensure compliance with the standards listed above, the following rules must be followed:

●The cable supplied must not be modiﬁed.

●The additional cables used must have their respective shielding connected at each end.

Caution

An electrostatic discharge (ESD) can damage the card components. Take the

following precautions to avoid such damage when handling the card:

Connect the card and everything entering into contact with it to the earth potential by providing a

conductive surface and discharge paths. Take these precautions as a minimum:

●Unplug all power and signal sources.

●Place the card on an earthed conductive work surface.

●Connect to the earth potential using an anti-static strap or by holding an earthed object.

●Earth all the tools entering into contact with the card.

Given the shortened length of the PCI EXPRESSTM connector and the resulting lack of

mechanical stability, we strongly advise against transporting the cards installed in a

computer, unless its chassis or case has a device for holding the card ﬁrmly in place to avoid

material damage.

User Manual – ALP221e

3. BOX CONTENTS

Thank you for purchasing a DIGIGRAM sound card in the ALP-X range.

The box contains:

●an ALP221e sound card equipped with a standard height bracket (full height: 120 mm),

●a low-proﬁle bracket (79.2 mm) that can be ﬁtted instead of the full-height bracket,

The breakout cable that bears the XLR connectors is available as an option.

Please contact your card supplier to acquire the Digigram-certiﬁed cable.

To download the most recent card driver, please visit the digigram website at:

www.digigram.com/support/drivers-ﬁrmware-downloads/

User Manual – ALP221e

4 GENERAL CHARACTERISTICS

ALP221e is a PCI EXPRESSTM x1 sound card. They can be inserted into and therefore operate in PCIe®

x1, x2, x4, x8 or x16 slots.

4.1 Main hardware characteristics

●1 stereo AES3 digital input, 32 kHz to 192 kHz, with high quality hardware sample rate

converter (SRC).

●1 AES3 digital stereo output (up to 192 kHz)

●1 mini jack stereo headphone output

●Inter-card synchronisation

4.2 Main software characteristics

●Low latency multi-card drivers

●Wasapi/DirectSound and ASIO application programming interfaces under Windows, and Alsa

and libgpio for Linux

●Simultaneous acquisition and playback in PCM (8, 16 and 24 bit), Float IEEE754

●On-board mixing of physical audio inputs and software "playback" devices to physical audio

outputs and software recording devices.

●"ALP-X Manager" application installed with the driver, to control the card settings:

- clock source

- frequency of the fallback internal clock

- input and output gains, phantom power (ALP222e-Mic), RMS VU-meters with peak-meters

- routing of inputs to outputs

●API for implementing the management of the card settings in a software application.

4.3 Routing audio streams in the card

The ALP card incorporates an on-board mixer in an FPGA component. This is a mixer with 6 mono

inputs (3 stereo) and 6 mono outputs (3 stereo).

The mixer captures the 2 physical input channels of the card (2 AES3 channels) and the 3 channels of

the playback devices.

The mixer restores 6 audio channels, respectively to the 2 physical outputs of the card (2 AES3

channels) and the 2 recording device channels.

The mixer can therefore be conﬁgured to perform the mixing and the routing of the 6 input

channels to the 6 output channels (6 mix sums).

User Manual – ALP221e

5 REQUIRED CONFIGURATION

5.1 Required hardware conﬁguration

There are no particular hardware restrictions in terms of PC on using the ALP card and its driver. The

PC can have standard height or low proﬁle PCIe card slots. The ALP card can in particular be used in

2U racks or reduced size PC, by using the smaller bracket instead of the standard height bracket that

is ﬁtted by default.

A PCI EXPRESSTM (PCIe®) x1, x2, x4, x8 or x16 slot must be available to plug in the card.

The processor power and memory required depend mainly on the operating system and the

applications used on the PC.

The sleep mode for the PCIe bus must be disabled.

Go to Windows Settings, System, and select “Power & sleep”.

Select Never” for the option “Put the computer to sleep”.

On the same window, click on “Additional power settings”.

Click on “Change plan settings” in

front of “Balanced

(recommended)”

Select “Change advanced power

settings”.

User Manual – ALP221e

Select “PCI Express”, “Link State

Power Management”, and select

“Oﬀ” for the setting.

Click on Ok to validate

User Manual – ALP221e

5.2 Necessary software conﬁguration under Windows

ALP221e operates under Windows from 64-bit versions of Windows 10 (from version 20H2).

To use your ALP-X card, you must install the driver included in the installation kit “ALP-X Kit”.

Download the latest version from the digigram website from the ALP221e card support page

The "ALP-X Kit" installer is used to install the following components:

●a 64-bit WDM driver oﬀering the WASAPI and DirectSound application interfaces,

●an ASIO driver (32 bits and 64 bits), with its "ALP-X ASIO Settings" conﬁguration interface.

Installing this component is optional,

●the "ALP-X Manager" application, which serves to adjust the ALP-X card settings and display

the signal levels. Installing this component is optional.

5.3 Necessary software conﬁguration under Linux

ALP221e operates under Linux from the 64-bit Kernel 4.1x onwards.

The Alsa driver for Linux is available for downloading. It is supplied as a DKMS package, which can

therefore be used to compile the driver for the target Linux distribution used.

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