From: Bruce Griffiths [EMAIL PROTECTED]
Subject: Re: [time-nuts] 5060A question
Date: Tue, 08 Jan 2008 20:56:14 +1300
Message-ID: [EMAIL PROTECTED]
Dave Carlson wrote:
Hello,
Since the source of the noise is the vibration of the Hot Wire Ionizer
ribbon inside the CBT it will require
I`d just hang an AC millivoltmeter[or microvoltmeter] across the regulator`s
output.
I use my H/P 400H, which will give readings down to about 50uV. If your
regulator produces less noise than this [say a 723, with
2uV], then you`ll need a more sensitive meter.
It might be wise to short the input
Brian,
I once obtained a 5060A that was used in the time and frequency lab at
HP.
I guess it had sentimental value to them as they kept it going long after
the 5061B had come out.
It had a newer tube in it and more to the point it had one of the later
5061A/B style A11 oven controller modules
On Jan 8, 2008, at 12:50, Don Collie wrote:
I`d just hang an AC millivoltmeter[or microvoltmeter] across the
regulator`s
output.
I use my H/P 400H, which will give readings down to about 50uV. If
your
regulator produces less noise than this [say a 723, with
2uV], then you`ll need a
Don Collie wrote:
I`d just hang an AC millivoltmeter[or microvoltmeter] across the regulator`s
output.
I use my H/P 400H, which will give readings down to about 50uV. If your
regulator produces less noise than this [say a 723, with
2uV], then you`ll need a more sensitive meter.
It might be
You might try Frequency Standards and Services in Colorado Springs for any
parts. However installing the 5061A/B A11 Dc Oven Controller into a 5060A
may not be simple.
Dave
- Original Message -
From: corby d dawson [EMAIL PROTECTED]
To: time-nuts@febo.com
Sent: Tuesday, January 08,
Hi Bruce and Henk,
Your point about Bandwidth is a valid one, and as you say, it depends on
the application.
The 400H has corner frequencies of about 10Hz, and 4Mhz, so the noise BW is
a bit wider than this [Y/N?]. This setup can`t measure noise at very low
Frequencies, or Frequencies much
Corby-
That's interesting to know that somebody has performed
the conversion at least once before.
I have a 5060 donor chassis and maybe that would be
the one to try and see how I might fit an A11 module
in place of the A20.
Thanks!
-Brian, WA1ZMS
-Original Message-
From: [EMAIL
Don Collie wrote:
Hi Bruce and Henk,
Your point about Bandwidth is a valid one, and as you say, it depends on
the application.
The 400H has corner frequencies of about 10Hz, and 4Mhz, so the noise BW is
a bit wider than this [Y/N?]. This setup can`t measure noise at very low
