How can I adjust my VX/PCX audio levels

When the driver is installed, the DHS software (Digigram Hardware Settings" is installed. Just run that software to have access to the IN/OUT level adjustments.

How to select the AES input ?

In the DHS you have to set the clock to AES/EBU Sync to be able to select the AES input.

I am facing a BSOD when using my VX sound card

We face issues on the HP computer with the DMA management. To avoid BSOD, you have to disable the DMA protection in the BIOS

My recent HP computer do not boot with a VX, PCX or LX-MADI sound card

We identified that some recent Hewlett-Packard computers (HP Z1 G6, HP ProDesk 400 G7, HP Elitedesk 800 G6, HP ProDesk 600 G6 Microtower PC, HP Z2 G8 Tower Workstation, HP ProLiant DL360, HP Proliant DL380) don't boot with VX, PCX and LX-MADI PCIe sound cards. This is due to a problem with the recent HP motherboard incompatible with the PCIe bridge used on the cards. HP has fixed this with a BIOS update available on

If you encounter similar problems with other HP references, kindly check the  website for individual BIOS updates since there is no constant firmware available for all of these models.


I can't access to the PYKO web pages anymore, what can I do ?

At first you can try to reset it to the factory settings by pressing 5 seconds with a tip in the hole which is in the middle of the PYKO front panel. If it not fix the issue, ask for the PYKO rescue procedure to the technical support team.

How can I use a USB memory stick on PYKO-out to play sound files ?

PYKO-out is able to play a playlist stored on a USB memory stick. This stick can be connected either to the front panel USB port, or to the internal USB port. These two USB ports can’t be used simultaneously. The USB stick must be FAT 16 formatted.

The firmware to be used is the Playout-extended firmware. The playlist must be an m3u playlist, and its name has to be entered in the URL field of the decoding priority 2 or decoding priority 3 (example: backup-playlist.m3u).

The mp3 sound files and playlist files (stream priority 3) must be located in the /bk directory of USB stick. The playlist and audio file names must have a maximum of 24 characters.

The safe characters are pure ASCII letters (a-z A-Z), digits (0-9) and underscore (_). The playslit is played when no audio source is available on the previous decoding priority(ies).

My PYKO goes ON and OFF as if there was an issue with the power supply.

You may want to check the power supply connector on the rear panel of PYKO (PWR connector).

The conductive core of this connector is split in two parts: insert a thin device (like a screwdriver) between the two parts of the conductive core to slightly enlarge the space and minimize the risk of unexpected ON/OFF cycles due to too little space between these parts.

How to decode an RTP stream on PYKO OUT?

The parameters of the stream(s) to be decoded have to be configured from the Audio menu, stream priority 1, stream priority 2, stream priority 3 WEB pages.

The URL field allows declaring the stream to be decoded on the selected priority. For receiving a unicast stream (point to point link) the syntax is: rtp://>. Example: rtp://

For receiving a multicast stream (point to multipoint link) the syntax is: rtp://multicast IP@:port>. Example: rtp://

What value must be set for the parameter “Latency” on PYKO-out?

The latency value is selectable from 1 to 10. This value is to be set according to the network jitter and the audio format. In MPEG audio formats, this value must be set to a minimum value of 6.

For other formats (PCM, G711), this latency parameter can be set to low values on high quality network (low jitter). PYKO-out displays in real time the jitter-margin on its WEB page. Adjust the Latency value so that the displayed jitter margin value remains higher than 0.

Can PYKO decode the AAC format?

The AAC audio compression is supported by PYKO-out only with the firmware “Playout-extended”. Supported AAC flavors are AAC-LC, HE-AACv1 (limited to 32 kHz), and HE-AACv2 (limited to 32 kHz). The AAC must be in ADTS mode. The RTP payload must be 126. Note that PYKO-in does not support AAC encoding.

How to decode a web radio with PYKO?

The PYKO OUT EXTENDED firmware decodes a stream from Shoutcast or Icecast servers. The supported formats are MPEG and AAC. Type the URL provided by the web radio server. Example:

Is MP3 variable bit rate supported in PYKO ?

Yes, the constant bit rate and the variable bit rate are supported for MP3, from streams and files.


Where can I find the UAX220 driver ?

The UAX220 driver is embedded in Windows OS. The card is automatically recognized.

Can I use the UAX220 on MacOS

Yes, the USB audio card is detected as Core Audio device and can be used with Mac computers.


How to retrieve the IP addresses of the LX-IP

The best way is to use Wireshark and directly connect your LX-IP card to your computer, after setting a capture filter to exlude your PC's IP address to narrow the displayed messages.

Sound cards

Which Linux Distribution are supported by ALP sound cards ?

ALP cards are supported under the following Linux distributions, from the mentioned versions:

  • Ubuntu:
       ver. 20.04 - kernel 5.15
       ver. 22.04 - kernel 6.5
  • Debian 11 - kernel 5.10
  • Debian 12 - kernel 6.1
  • RHEL 9 kernel 5.14

In case you need to run the driver under another Linux distribution, please contact Digigram to get
the source code. If  you experience issues for compiling / running the driver on your Linux distribution, we
propose a service to provide you with the appropriate driver; please contact Digigram.

My sound card is not detected by Windows

Make sure that you downloaded the lasted driver on our website. Indeed, from time to time we have to make component updates that require a new driver.


Which Linux Distribution are supported for the LX-DANTE ?

The following distributions are supported : Ubuntu LTS / Debian LTS / CentOS 7 For other Linux distributions, we can propose a service for providing an adequate compiled and installable driver package.