Hello. My name is Jim Walters. I'm a test engineer with Agilent Technologies
and I’m also a collector of Balinese bells.
And so in this YouTube video,
here’s the Balinese bell,
makes a nice, beautiful resonant sound.
[BELL RINGS]
In this video, what I’m going to do is
take the waveform that I’ve captured from this bell
and I have an example of the waveform shown on my PC
so I used a digitizer to grab this waveform.
And then I moved the waveform from the PC onto this USB stick
placed it in our new Series 33500 function generators.
These new function generators have a feature called Trueform
and Trueform means that every single point
on this chart will be identically played.
So what I’m going to show you today is
how to download an ARB,
and this bell is just a representation
of any type of ARB that you could want to load into your box.
And then I’ll load this ARB onto channel 1 of the box
and then I'll load the same ARB onto channel 2.
When you load two different ARBs
When you load two different ARBs onto the function generator
what you’ll notice is the ARBs will not be in synchronization.
And so I have some speakers, and we’ll hear the bell
with channel 1 and channel 2 being out of sync and you'll
your ear will pick up the difference.
And then we have a feature on our function generator
that allows you to synchronize channel 1 to channel 2.
I'll synchronize the two channels
and then we'll listen to the bell sound again,
and you can see
see it on the scope that it's in sync
and then your ear will also hear it.
So let's go to the function generator.
So on the function generator,
I’ve just loaded the waveform onto channel 1.
I’ll show you how to do that.
It’s very easy. You press 'Waveform'
'ARB'
'ARBs'
'Select an ARB'
and down here, I have the ARBs on my USB stick
and the ARB is called
'BELL.CSV'
I select it
and load it.
Ok, so the bell loaded and it came in with a certain amplitude
that was set over on the
PC
I’m going to change the amplitude right now
2.5v at 44.5 kHz
Now I’m going to go over to channel 1
and make the same changes.
change the amplitude to 2.5 volts.
And now I’m going to turn on the outputs
Turn on channel 1
Turn on channel 2
If you see on the oscilloscope,
you hear a ringing on this channel,
ringing on this channel. You can see they're not in sync
You can hear the difference.
So now, in order to synchronize these two waveforms,
you go to 'Parameters'
and the 'More' button
and there's a button that says 'Sync ARBs.'
So as soon as you hit the 'Sync ARBs' button,
you can see on the scope that the two signals are
definitely in sync.
And let’s just have a moment of quiet and we can listen to the bell ring.
[BELL RESONATES]
Ok, thank you very much. What I've demonstrated is that you could
capture any waveform out in the world,
convert it, put it into this box,
and play it back exactly as you recorded it.
Ok, the second feature I wanted to talk about
with the function generator
is the capability to
have the frequency on channel 1
match the frequency on channel 2 when you're adjusting the frequency on channel 1.
We have this capability, it's a tracking function,
and so we can couple the frequencies between the two channels.
And so what I'll do is I'll turn that feature on
and then I'll adjust the sample rate
and we'll be able to hear both channels
adjust at the same time.
Ok, here's the 'Dual Channel Mode'
and in 'Dual Channel Mode' I'm going to turn rate coupling on.
So now, whatever happens on channel 1 will happen on channel 2.
and the way that you can see that, there'll be a little blue asterisk
up by the sample rate.
So now let’s turn on our waveforms
And as you can see the waveforms are in synchronization right now.
So now I’m going to adjust the sample rate
and...
take it up a little bit higher.
[BELL RINGS]
And I’ll go a little bit even higher.
[BELL RINGS]
Ok so that, um..
Ok, so that concludes the
demonstration that you can couple frequencies
make your ARBs play in synchronization
and adjust the frequency at the same time.
Thank you very much.