Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Old March 18th 12, 09:06 PM posted to rec.radio.amateur.equipment
external usenet poster
 
First recorded activity by RadioBanter: Nov 2011
Posts: 27
Default Your experience with function generators

The frequency stability of my HP3312A function generator is poor, very
annoying for many practical use. I am trying to determine whether that
behavior is fairly normal for function generators, or my particular unit has
got a problem.

What is your experience on function generators frequency stability?

Thanks & 73

Tony I0JX
Rome, Italy


  #2   Report Post  
Old March 20th 12, 12:56 AM posted to rec.radio.amateur.equipment
external usenet poster
 
First recorded activity by RadioBanter: Sep 2006
Posts: 10
Default Your experience with function generators

In article , Antonio I0JX
wrote:

The frequency stability of my HP3312A function generator is poor, very
annoying for many practical use. I am trying to determine whether that
behavior is fairly normal for function generators, or my particular unit has
got a problem.

What is your experience on function generators frequency stability?

Thanks & 73

Tony I0JX
Rome, Italy


Any of the VCO-based function generators, such as the 3312A, are going
to be wobbly in terms of not only stability but ability to generate a
specific frequency or range of frequencies.

You need to move to a synthesized source to get better results. One
candidate would be the HP 3314A, which is a synthesized generator, and
covers up to 20 MHz.

I have one of these; it's very flexible, and stable. It doesn't have
the ability to lock to an external standard, but it is crystal
controlled.

With a synthesized device, you have digital control over frequency,
sweep parameters, and with something like the 3314A, you also have
digital control over amplitude and offset.

eBay offers some inexpensive function generator boards as well.
  #3   Report Post  
Old June 10th 12, 07:32 AM posted to rec.radio.amateur.equipment
external usenet poster
 
First recorded activity by RadioBanter: Jun 2012
Posts: 1
Default Your experience with function generators

On 03/19/2012 08:56 PM, artie wrote:
The frequency stability of my HP3312A function generator is poor, very
annoying for many practical use. I am trying to determine whether that
behavior is fairly normal for function generators, or my particular unit has
got a problem.

What is your experience on function generators frequency stability?


Any of the VCO-based function generators, such as the 3312A, are going
to be wobbly in terms of not only stability but ability to generate a
specific frequency or range of frequencies.

You need to move to a synthesized source to get better results. One
candidate would be the HP 3314A, which is a synthesized generator, and
covers up to 20 MHz.

I have one of these; it's very flexible, and stable. It doesn't have
the ability to lock to an external standard, but it is crystal
controlled.

With a synthesized device, you have digital control over frequency,
sweep parameters, and with something like the 3314A, you also have
digital control over amplitude and offset.

eBay offers some inexpensive function generator boards as well.


I concur. I use an HP 3325A. It's pretty solid, a synthesized unit,
and it can be used with an external reference. They're old enough to be
cheap on the used market, yet new enough to be as featureful as we
expect these days.

That said, the OP's 3312A shouldn't be THAT bad. Is it possible the
main oscillator's performance is being spoiled by aging components, like
dried-out electrolytic capacitors and such?

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA


Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Your experience with function generators Antonio I0JX Boatanchors 8 March 20th 12 05:48 PM
HP Function Generators: (2) HP 3310A (1) HP 3311A CP Equipment 2 April 4th 08 04:31 AM
HP Function Generators: (2) HP 3310A (1) HP 3311A CP Homebrew 2 April 4th 08 04:31 AM
HP Function Generators: (2) HP 3310A (1) HP 3311A CP Swap 1 March 26th 08 10:22 PM
When Israel first bombed Gaza's power mains, hospitals resorted to using their generators. But generators can only keep going if there is fuel.... and there no longer is fuel I PUNCE Scanner 2 November 7th 06 05:23 AM


All times are GMT +1. The time now is 01:18 PM.

Powered by vBulletin® Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright 2004-2017 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017