Re: TDR instrument with regulable risetime.

[Wim Cornelis]

NOTE:  To get off this list, send email to majordomo@aqua.ccwr.ac.za
with the body of the message containing the line:
unsubscribe sowacs

Dear Elimoel,

perhaps you could contact Dr. Marec Malicki, from the Institute on
Agrophysics, Lublin, Poland (mmal@demeter.ipan.lublin.pl). He is a real
expert on this matter and actually the brain behind their spin-off
company Easy Test (see Sowacs pages). I don't know if he is a subscriber
to this list (if yes, hello Marec!). They don't work with step pulses
(as Tektronix technology does), but with needle pulses. I suppose that
the oscilloscope they are using can regulate risetime.

Best regards,

Wim


owner-sowacs@aqua.ccwr.ac.za wrote:
> 
> NOTE:  To get off this list, send email to majordomo@aqua.ccwr.ac.za
> with the body of the message containing the line:
> unsubscribe sowacs
> 
> [Resent] (originally sent 17/10/01)
> 
> Dear list members,
> 
> I am seeking a TDR  instrument with regulable risetime, covering a range as
> large as possible.
> 
> Has anyone in this list ever used, or heard of, something like this?
> 
> I am familiar with a TDR instrument operating at a fast rise time, <200 pS.
> I have also heard of instruments with
> faster rise times, <10 pS.  I am seeking an instrument with a regulable
> risetime, covering a range as
> large as possible, perhaps from 10 to 200 pS.  But I have been unable to
> find any information about this.
> I have emailed some companies:
> Soilmoisture
> Campbell Scientific Inc.
> Tektronix
> E.S.I. Environmental Sensors Inc.
> but I have only received negative answers.
> 
> I will be grateful for any information on this matter.
> 
> Elimoel A. Elias
> e-mail: elias@imagenet.com.br
> Website:  http://elimoel.freeyellow.com/elimoel.html
> ICQ 109845414
> Tel.: +55-19-432-9458

-- 
===========================================
Wim Cornelis
Department of Soil Management and Soil Care
University of Ghent
Coupure links 653
B-9000 Gent
Belgium
tel.: +32 (0)9 264 60 40
fax: +32 (0)9 264 62 47
e-mail: wim.cornelis@rug.ac.be
http://soilman.rug.ac.be
===========================================