RE: continously variable delay line avail?

Timothy.Nustad@amermsx.med.ge.com
Fri, 9 May 1997 10:23:35 -0500

I have used one of these "trombone" type delay lines
for experiments delaying fast edge rate TTL clocks. They
work quite well. The one I have seen actually look
likes multiple trombones, looped back on themselves.

You may want to try:

Sage Laboratories
3 Huron Drive
Natick, MA 01760-1314
508-653-0844

I know very little about the company other than: they
answered my questions, delivered quickly, and their
delay line worked fine. The model we have was one of
their less expensive ones:

Freq Range DC - 0.75 GHz
Delay Range 4.3 to 6.8 nsec

Good Luck,

Tim Nustad
GE Medical Systems

> ----------
> From:
> mellitz@eagle.ColumbiaSC.NCR.COM[SMTP:mellitz@eagle.ColumbiaSC.NCR.COM
> ]
> Sent: Thursday, May 08, 1997 4:51 PM
> To: John.Lipsius@Eng.Sun.COM; si-list@silab.Eng.Sun.COM
> Subject: Re: continously variable delay line avail?
>
>
>
>
> John,
>
> I believe a coaxial trombone air line is what you need. I have used
> them
> for delay purposes while making eye pattern measurements.
> I can't remember who makes them. I don't think that they are
> inexpensive.
>
> ... Rich Mellitz, NCR
>
> On May 8, 1:42pm, John Lipsius wrote:
> > Subject: continously variable delay line avail?
> > Hello,
> >
> > I'm looking for a continuously variable, probably coax based,
> > delay line that's hopefully accurate or can be calibrated.
> > Need 0 to 9 ns. guaranteed, without loss of signal integrity.
> > Has to have BW through 1.5 GHz as a unit. For delaying a digital
> > TTL clock.
> >
> > I realize maybe there's two left in the world under some desk
> > in the cobwebs, but it's worth a try. Help!
> >
> > Thanks very much,
> > John
> >
> >-- End of excerpt from John Lipsius
>
>