M
Mr.CRC
Hi:
So few seem to have this.
I actually budgeted to buy me an Agilent 33522A for 3 grand a year ago,
along with a DSO3000X series scope. I balked at the generator since the
ones I have at work have serious bugs. They have fixed them almost, but
not perfectly. I know they will fix them fully if I send in new
complain-o-grams, but I haven't had time to do that yet.
Anyway, for $3k of my own money, I don't want it to have bugs. That has
motivated me to just wait and/or scan the lower cost generator market.
But there are a few features of the Agilent that I really like:
a. 2 channels
b. PWM modulation -- why do so few have this?
c. Ability to modulate a PWM with noise. This is so cool, because it
let me set up a scheme to simulate shot to shot variations in laser
performance, then develop the data analysis on my LeCroy scope to plot
in real time the relative standard deviation of pulse energy.
d. Ability to externally modulate the PWM. Again, very cool.
e. Settable noise bandwidth! Only the Agilent does this, from what
I've seen.
So now I'm having a look at the TTI model TG2511 25MHz Function,
Arbitrary & Pulse Generator:
http://www.saelig.com/AGB100/AG012.htm
Which is at least equipped with PWM modulation including external.
Unfortunately, their pulse capabilities don't offer 1ns resolution,
which is why I haven't found a suitable TTI to buy at work where I need
that.
I don't really want to spend this much though.
This Rigol DG1022 offers two channels for much less money, but no PWM:
http://www.saelig.com/AGB100/AG001.htm
What I really want to do right now is have two synchronized anti-phase
PWM channels, that I can adjust duty cycle to drive a half-bridge. Not
easy to do this for under $3000 it seems.
Except for Saelig had this Siglent SDG1005 5MHz Waveform Generator on
it's site the other day, and now it disappeared. Seems to offer 2
channels and PWM. But the jitter spec on the square wave is terrifying:
http://www.siglent.com/en/product.asp?id=69
It's getting hard to keep track of all the new Chinese instrument
makers. I have ignored them until recently, figuring they just weren't
worth the risk. But when you're talking a factor of 10 cheaper, you
might as well buy one just for a spare.
Continuing to search for the perfect and cheap signal generator...
So few seem to have this.
I actually budgeted to buy me an Agilent 33522A for 3 grand a year ago,
along with a DSO3000X series scope. I balked at the generator since the
ones I have at work have serious bugs. They have fixed them almost, but
not perfectly. I know they will fix them fully if I send in new
complain-o-grams, but I haven't had time to do that yet.
Anyway, for $3k of my own money, I don't want it to have bugs. That has
motivated me to just wait and/or scan the lower cost generator market.
But there are a few features of the Agilent that I really like:
a. 2 channels
b. PWM modulation -- why do so few have this?
c. Ability to modulate a PWM with noise. This is so cool, because it
let me set up a scheme to simulate shot to shot variations in laser
performance, then develop the data analysis on my LeCroy scope to plot
in real time the relative standard deviation of pulse energy.
d. Ability to externally modulate the PWM. Again, very cool.
e. Settable noise bandwidth! Only the Agilent does this, from what
I've seen.
So now I'm having a look at the TTI model TG2511 25MHz Function,
Arbitrary & Pulse Generator:
http://www.saelig.com/AGB100/AG012.htm
Which is at least equipped with PWM modulation including external.
Unfortunately, their pulse capabilities don't offer 1ns resolution,
which is why I haven't found a suitable TTI to buy at work where I need
that.
I don't really want to spend this much though.
This Rigol DG1022 offers two channels for much less money, but no PWM:
http://www.saelig.com/AGB100/AG001.htm
What I really want to do right now is have two synchronized anti-phase
PWM channels, that I can adjust duty cycle to drive a half-bridge. Not
easy to do this for under $3000 it seems.
Except for Saelig had this Siglent SDG1005 5MHz Waveform Generator on
it's site the other day, and now it disappeared. Seems to offer 2
channels and PWM. But the jitter spec on the square wave is terrifying:
http://www.siglent.com/en/product.asp?id=69
It's getting hard to keep track of all the new Chinese instrument
makers. I have ignored them until recently, figuring they just weren't
worth the risk. But when you're talking a factor of 10 cheaper, you
might as well buy one just for a spare.
Continuing to search for the perfect and cheap signal generator...