Paul
It weighs 30 lbs. Pictures are on face book or I can email with an address.
Bill
-----Original Message-----
From: paul swed
Sent: Wednesday, January 15, 2014 12:20 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] fast edge, rise time.
Bill
Interesting and curious what does it weigh? I would guess since its NIST a
lot.
Regards
Paul
WB8TSL
On Wed, Jan 15, 2014 at 1:15 PM, Bill Reed <[email protected]> wrote:
Thanks Mark
I must have serial number 2 of that series of IPG's. The one in the
article is SN-3-75-1 and mine is SN-3-75-2.
It was probably fabricated in March 75.
I plan on visiting Redstone library to look up references 8 and 9.
Bill
-----Original Message----- From: Mark Kahrs
Sent: Tuesday, January 14, 2014 12:02 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] fast edge, rise time.
You might be interested to know this was discussed in a paper by Jim
Andrews (founder of Picosecond Pulse Laboratories):
http://www.nist.gov/calibrations/upload/im-25-4.pdf
From the age of the paper, I'd say this generator is probably more than 40
years young.
On Mon, Jan 13, 2014 at 2:22 PM, Bill Reed <[email protected]> wrote:
Hi,
Since there is no interest in my pulse generator maybe one of you knows
someone at NBS who can provide a schematic of the generator.
It has " NBS Impulse Generator SN 3-75-2 " engraved on the front panel
and is ~ 10 x 16 x 17.
Thanks,
Bill Reed
-----Original Message----- From: Bill Reed
Sent: Tuesday, January 07, 2014 7:53 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] fast edge, rise time.
Hi,
Since you guys are interested in fast pule generators, I have one you may
be
interested in.
I got it in govt. auction about 25 years ago for ~ $ 50.00. I will sell
it
to anyone for $ 50.00 plus shipping.
I prefer to sell to someone who will restore and use it rather than
parting
it. It has more than $ 50.00 parts in it.
There are a 30 turn 6.5 inch diameter hard line, wide band hybrid
coupler,
diode assembly and several adapters and attenuators.
I believe the hard line discharges into a step diode. The power supply
includes 200 V plus other voltages.
If I remember correctly ( I have no high speed scope now ) the pulse is 2
nanoseconds wide with a 280 picosecond rise time and and 2.5 Vpp.
I checked with a 200 MHz digital scope and can see a pulse that verifies
my
scopes bandwidth. The rate generator works but has problems.
See facebook ([email protected]) for pictures under Impulse.
Bill Reed 256 586-3446
-----Original Message----- From: ct1dmk
Sent: Sunday, December 29, 2013 7:36 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] fast edge, rise time.
Thank you all for your comments on this subject.
Happy new year.
Luis Cupido.
ct1dmk.
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