Loopback 2 makes audio routing on the Mac easier than ever. The user interface is vastly improved, with an easy-to-use wiring system that provides even more power. Read this page to learn about what's new in the latest version. If you own a license for Loopback 1, you're eligible for a heavily discounted upgrade to Loopback 2.
Yate 3 13 0 1 download free. Important: If you're new to LoopBack, use the current release,LoopBack 4.0.
To ask questions and discuss how you are using LoopBack, check out the LoopBack Developer Forum .
- Meanwhile, there is an existing alternative that is customer accessible, by means of setting the port into loopback mode, which will set the port into loopback frames inwards on the port (i.e. A terminal loopback) similar to the loopback flow achieved with the external loopback plug. The CLI command to enable loopback on a port is the following.
- The M.2 loopback module in M-key 2242 NGFF form factor allows you to test the signal integrity of the PCIe lanes of your custom M.2 host board designs. The module is composed of a high-frequency printed circuit board (PCB) designed with controlled impedance traces to loopback.
Note:IBM API Connect is an end-to-end API management solution that uses LoopBack to create APIs, and provides integrated build and deployment tools. For more information, see Installing IBM API Connect.
If you are an IBM customer, for technical support see the IBM Support Portal.
The LoopBack framework
The LoopBack framework is a set of Node.js modules that you can use independently or together to quickly build REST APIs.
A LoopBack application interacts with data sources through the LoopBack model API, available locally within Node.js, remotely over REST, and via native client APIs foriOS, Android, and HTML5. Using these APIs, apps can query databases,store data, upload files, send emails, create push notifications, register users, and perform other actions provided by data sources and services.
Clients can call LoopBack APIs directly using Strong Remoting, a pluggable transport layer that enables you to provide backend APIs over REST, WebSockets, and other transports.
The following diagram illustrates key LoopBack modules, how they are related, and their dependencies.
Description
The M.2 loopback module in M-key 2242 NGFF form factor allows you to test the signal integrity of the PCIe lanes of your custom M.2 host board designs. The module is composed of a high-frequency printed circuit board (PCB) designed with controlled impedance traces to loopback each of the 4x PCI Express lanes. The module supports up to PCIe Gen3 (8GHz) and does not have any electronic components.
Loopback 2
- Form factor: 2242 NGFF M-key (22mm x 42mm)
- Plugs into M.2 NGFF M-key connectors (normally used for PCIe SSDs)
- Loopback on each of the 4x PCIe lanes PCIe
- Supports PCIe Gen1-3 (2.5GHz to 8GHz)
- Test pads for verification of the 3.3V power input
- No electronic components (bare PCB)
Frequently asked questions
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What M.2 NGFF connector will this plug into?
It will plug into any standard M.2 NGFF M-key connector. For an example, please take a look at this connector from TE: 1-2199230-6
Loopback 2.0
What are the electrical requirements of this module?
The M.2 loopback module is completely passive and simply provides loopback connections on each of the 4x PCIe lanes of the M.2 interface. The module does not make use of the 100MHz clock (REFCLK_P/N) that is supplied to M.2 modules, so it does not require that this clock be running. The module does not connect to any of the other signals on the M.2 interface such as PEDET, PERST#, WAKE#, SUSCLK, CLKREQ# etc. The module does connect to some of the 3.3V power input pins to allow verification of this power supply using electrical probes.
Loopback 2 Mac
Does the loopback module have AC coupling?
No, the module does not have any AC coupling capacitors or any electronic components, it is completely passive. For this loopback module, no AC coupling is necessary on the PCIe lanes because the PCIe M.2 NGFF Electromechanical Specification requires that there be AC coupling capacitors on the PCIe transmit lines of the host device. If you are using this loopback module to test your own custom host PCB, and your host board does not have AC coupling capacitors on the PCIe transmit lines, it is critical that you add the capacitors to the design or you may risk damaging your receiver interface.
