xNode Self Test Procedure

Updated 9 months ago by John (JP) Powell


This document covers testing the input and outputs of an xNode using the built-in self-test.

This usually requires a factory restore and disconnection from audio devices, so make sure you take note of its configuration before starting.

Equipment Needed 

  1. Device Under Test (DUT):  xNode
  2. CAT5-6 Cables with RJ45 connectors at both sides for audio loopback test.  (4 needed, see note)
  3. PC Computer:  Running any telnet terminal (PuTTy, HyperTerminal, etc)
  4. A small network connecting the computer to the xNode. A regular or crossover Ethernet cable will do.
NOTE: If you are testing a mic xNode, you will need to make special loopback cables for the self-test. Click here to learn how to make them.

Reset to Factory Defaults

To ensure that there are no configuration issues that will cause false failures, it’s customary to factory reset the xNode before beginning.  To do this, hold the two front panel buttons and power up the unit.  Continue holding the buttons until the unit executes the factory restore. You can also do this via Telnet.

Reconfigure IP address

Set the IP address for NET 1 from the front panel as described in the quickstart guide.  The xNode needs to be on the same subnet a the PC being used for the telnet session.

Connect with Telnet

Using an Ethernet connection to the DUT, log in with your telnet terminal emulator using the following parameters:    19200 Baud, 8 data bits, 1 stop bit, No parity, No flow control

Connect via telnet (port 23) to the IP address of the xNode.

The login username is “user” and there is no default password.

You should now see a “/home>” prompt.  

Connect Loopback Test Cables

On the Analog, AES/EBU and Mic xNodes, connect the inputs of the xNode to the outputs in this manner:

Inputs     Outputs

1  <-----> 1

2  <-----> 2

3  <-----> 3

4  <-----> 4

Run Livewire Self Test

Enter the following command into your telnet session:

LWTest -c

The first thing tested is a nonvolatile memory.  You’ll see a PASS or FAIL.

Instructions will appear on the session telling you what to do next.  If this is Analog or AES xNode, you’ll see instructions to connect loopback cables as we've discussed above.

The test will run while echoing data. When complete, it will show you a PASS or FAIL at the end.  

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