tieLight/MADI Interface

Applicable to AIXpressor and flexAIserver

tieLight/MADI Interface

AIXpressor has two independent optical interfaces which can be configured for tieLight and/or MADI.

tieLight is a proprietary Jünger interface providing high channel count and low latency - up to 1,024 bi-directional audio channels with a total latency equalling four samples. It is designed to daisy-chain multiple AIXpressor units and/or flexAI servers.

AIXpressor has a built-in tieLight interface, while flexAI servers use an optional PCIe card available from Jünger.

Select Setup (A) under tieLight / MADI from the Interfaces menu. Use the Interface Transmission Mode dropdown (B) to set the mode for both interfaces. Choices include:

• MADI independent - Both interfaces use MADI but operate independently from one another.

• MADI redundant - Both interfaces use MADI but are configured identically to provide redundancy.

• tieLight independent - Both interfaces use tieLight but operate independently from one another.

• tieLight redundant - Both interfaces use tieLight but are configured identically to provide redundancy.

• IF1 MADI, IF2 tieLight: Interface 1 uses MADI; Interface 2 uses tieLight.

• IF1 tieLight, IF2 MADI: Interface 1 uses tieLight; Interface 2 uses MADI.

When using tieLight, PTP sync distribution across multiple devices can be set in the tieLight PTP Role dropdown (A). Choices include Master, Slave, and Passive.

Note - Some options may be grayed out and unavailable depending on how the interfaces are set up in the Interface Transmission Mode menu.

SFP Status Pages

SFP 1 and SFP 2 each have independent but identical status pages (A).

Displayed information includes:

• RX Status (B) - Shows the current status of the selected optical input as reported from the SFP module.

• Signal Status Stereo Pair  (C) - Indicates the presence of a signal for each pair as well as the type of signal (PCM, Dolby E, Dolby Digital, Dolby Digital Plus, MPEG-4 HE-AAC, MPEG-4 AAC, and N/A). This information is gathered and analyzed by the core FPGA router using the signal headers of adjacent odd and even signals (stereo pairs). In addition to simply showing status, the information can be used globally for other functions including event management or muting processor inputs.

Important - MADI connections require the use of SFP modules capable of 125Mbps. tieLight connections require the use of 2.5Gbps modules.