Re: [time-nuts] 5060A question

2008-01-08 Thread Magnus Danielson
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

Re: [time-nuts] 5060A question

2008-01-07 Thread wa1zms
much. -Brian, WA1ZMS -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Frequency Standards Services Sent: Wednesday, January 02, 2008 1:21 PM To: Time Nuts List Subject: Re: [time-nuts] 5060A question This was one of the reasons that HP eventually went

Re: [time-nuts] 5060A question

2008-01-07 Thread Magnus Danielson
From: [EMAIL PROTECTED] Subject: Re: [time-nuts] 5060A question Date: Mon, 7 Jan 2008 20:43:55 -0500 Message-ID: [EMAIL PROTECTED] Thanks to everyone who gave me feedback about the 2KHz whine from my HP-5060A. It appears to be the nature of the design and I'm not quite willing to try and re

Re: [time-nuts] 5060A question

2008-01-07 Thread Bruce Griffiths
Magnus Danielson wrote: From: [EMAIL PROTECTED] Subject: Re: [time-nuts] 5060A question Date: Mon, 7 Jan 2008 20:43:55 -0500 Message-ID: [EMAIL PROTECTED] Thanks to everyone who gave me feedback about the 2KHz whine from my HP-5060A. It appears to be the nature of the design and I'm

Re: [time-nuts] 5060A question

2008-01-07 Thread Magnus Danielson
From: Bruce Griffiths [EMAIL PROTECTED] Subject: Re: [time-nuts] 5060A question Date: Tue, 08 Jan 2008 15:31:17 +1300 Message-ID: [EMAIL PROTECTED] Hej Bruce, Maybe set up a tuned box around it to cancel whine. MVH Magnus Hej Magnus Do you mean an active noise cancellation

Re: [time-nuts] 5060A question

2008-01-07 Thread Bruce Griffiths
Magnus Danielson wrote: Hej Magnus Do you mean an active noise cancellation system?? No, you could do that too, but I was basically refering to a simple box tuned in size to cancel at 2 kHz. Toss in a thick cloth for additional resistive damping. You could even go Helmholtz if you

Re: [time-nuts] 5060A question

2008-01-07 Thread Dave Carlson
PROTECTED] To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Monday, January 07, 2008 9:58 PM Subject: Re: [time-nuts] 5060A question Magnus Danielson wrote: Hej Magnus Do you mean an active noise cancellation system?? No, you could do that too, but I

Re: [time-nuts] 5060A question

2008-01-07 Thread Bruce Griffiths
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 using something other than pressure on the outer container to snuff it out. The outer steel of the CBT is rigid. Dave Which is why it transmits the

Re: [time-nuts] 5060A question...

2008-01-02 Thread Poul-Henning Kamp
In message [EMAIL PROTECTED], [EMAIL PROTECTED] writes : Since I got it working several years ago, my HP-5060A has a rather loud ~2KHz audible whine coming from it. It seems to be a result of the switching power supply in the A20 oven controller module. My units did the same thing, and I traced

Re: [time-nuts] 5060A question...

2008-01-02 Thread Dave Carlson
it. It was resolved ultimately by designing the dc Oven Controller. Dave - Original Message - From: Sebastian Stolp [EMAIL PROTECTED] To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Wednesday, January 02, 2008 1:41 AM Subject: Re: [time-nuts] 5060A question

[time-nuts] 5060A question...

2008-01-01 Thread wa1zms
Gentlemen- Since I got it working several years ago, my HP-5060A has a rather loud ~2KHz audible whine coming from it. It seems to be a result of the switching power supply in the A20 oven controller module. Is it worth my efforts to try and fix the problem or have others already found a