Hi, my name is Pat Webb. I am an engineer at Agilent Technologies, and I am here today
to give you a short demonstration of our silicon vendor software. Let me tell you a little
bit about what we have set up today here. First of all, we have the EXT Wireless Test
Set. I have an Altair USB dongle, and I have our silicon vendor software, and what we are
going to do is run a complete calibration and verification of the Altair device controlled
by our silicon vendor software. Before we get into the demo, let me tell you a little
bit about what is required to have a non-signaling test set up. There are 2 things: Basically,
you need to have software provided by the chipset vendor to control the chipset and
to put the chipset into the proper test modes. Secondly, you need to have silicon vendor
software, such as what we are demonstrating here today, to be able to control the EXT,
as well as synchronize with the silicon software. There are 2 ways to operate our silicon vendor
software. What I will show you today is a command line interface, and that is useful
for demonstration, and also for debugging. The way that most customers will actually
use this in a production flow is to make use of the APIs we provide, and integrate those
into their test executive. To set up the silicon vendor software there are really 3 easy steps
you need to follow. First, you need to set up the instrument, which means setting up
the EXT address, which IO port you are going to use, which DUT band you are going to test.
In this case we are testing an LTE band 7, and you also need to select the calibration
items and the verification items. Calibration items include TX gain and TX gain over frequency,
RX gain cal, and RX gain over frequency. These are typical verification items, including
TX power, EVM, spectrum emissions mask, adjacent channel power, receiver sensitivity or RSSI
and so forth. Let me go ahead and start the test. Remember, this is an band 7 device.
The first thing we are going to do is calibration, and we will do a transmitter calibration at
center frequency. We will follow that with transmitter gain over several different frequencies,
in this case 5 frequencies, and then we will go through receiver calibration at center
frequency, receiver gain measurement, to be specific, and we will do a receiver gain also
over 5 different frequencies. And as you can see, it is going through those steps now.
What will happen next is we will start the verification test, and we will do verification
over 3 different channels. First for transmitter, we will do the power EVM spectrum emissions
mask and adjacent channel power measurements, and as you can see, it is starting to run
through those now. When that is complete, we will do receiver verification, and remember,
this device has a diversity receiver so we will test two different receivers. And while
we are going through the receiver verification, we will measure RSSI, PC INR and packet error
rate, and so we are going through those steps now, and you can see the results being displayed
there for each of the tests. And as you can see, the device passed, and we show the summary
for each test, as well as the test time for each test. There is also a log file that is
created if you want to look at more detail. So, for example, you could look at the limits
that we set for each test, as well as the specific value that returned for each test.
As you have seen, we have shown how we can use EXT, along with our silicon vendor software,
to do a full calibration and verification of an LTE device. For more information please
visit the URL shown. Thanks for watching