.. _product-ident:

Product Identification
######################

.. figure:: _static/product-identification-label.svg
   :width: 250
   :align: right
   :alt: LXA TAC product label layout

   Example for a LXA TAC product label

The LXA TAC is delivered with a product label containing an unique serial
number, the product revision and the MAC addresses of the device.

An example for such a product label is shown to the right.
The corresponding device has the serial number ``00009.00014``,
indicating it is the 14th instance in product class
``00009 (LXA TAC Assembly)``.
A copy of the serial number is also included in the data-matrix
code to allow semi-automatic identification of devices.

Revisions of the device
-----------------------

In addition to the serial number, every device is marked with a revision.
For example the revision string ``lxatac-D01-R02-V01-C00`` would decode to:

* ``D01`` - First device in the ``lxatac`` device class
* ``R02`` - Device revision two
* ``V01`` - Assembly variant one
* ``C00`` - No post-manufacturing hardware changes

The following revisions of the devices have been manufactured:

* **lxatac-D01-R01-V01-C00:** LXA TAC Prototype (Gen 1) [development only]
* **lxatac-D01-R01-V01-C02:** LXA TAC Prototype (Gen 1 with Gen 2 retrofit) [development only]
* **lxatac-D01-R02-V01-C01:** LXA TAC Pre-Series devices (Gen2) [development only]
* **lxatac-D01-R02-V01-C02:** LXA TAC Pre-Series with changes according to EMC testing (Gen 2 with Gen 3 retrofit)
  [early access]
* **lxatac-D01-R03-V01-C00:** LXA TAC Series Production devices (Gen 3)

MAC-Addresses
-------------

Each TAC is shipped with an allocation of 16 MAC addresses,
some of which are not used by default but instead available to the user.
The ``MAC: 18:74:e2:a0:00:f_`` string on the example label indicates that
MAC addresses ``18:74:e2:a0:00:f0`` to ``18:74:e2:a0:00:ff`` are allocated to
this LXA TAC.