, December 10, 2012 10:59 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] 5061A Beam Current question
I've got a couple questions on a early S/N 5061A I got a few days ago.
It took a couple days but the Ion Pump current is now down to zero or at
least less then one
: [time-nuts] 5061A Beam Current question
I've got a couple questions on a early S/N 5061A I got a few days ago.
It took a couple days but the Ion Pump current is now down to zero or at
least less then one division on the meter.
I'm able to get the unit to go into continuous operation mode
Pete,
The more likely singing offender is the old style A11 oven controller
module.
It also is off in the Cs off mode so the singing should stop when in that
mode.
The newer style A11 modules do not sing!
Corby
___
time-nuts mailing list --
Thanks
This weekend I'll stick a microphone inside a piece of tubing and go looking.
The singing only occurs when the unit is in LOOP OPEN or OPER mode.
-pete
On Tue, Dec 11, 2012 at 11:26 AM, cdel...@juno.com wrote:
Pete,
The more likely singing offender is the old style A11 oven
As Corby said oven control
Bert Kehren
In a message dated 12/11/2012 2:47:03 P.M. Eastern Standard Time,
p...@petelancashire.com writes:
Thanks
This weekend I'll stick a microphone inside a piece of tubing and go
looking.
The singing only occurs when the unit is in LOOP OPEN or OPER
Oops. Forgot about A11.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of ewkeh...@aol.com
Sent: Tuesday, December 11, 2012 2:33 PM
To: time-nuts@febo.com
Subject: Re: [time-nuts] 5061A Beam Current question
As Corby said oven
I've got a couple questions on a early S/N 5061A I got a few days ago.
It took a couple days but the Ion Pump current is now down to zero
or at least less then one division on the meter.
I'm able to get the unit to go into continuous operation mode by
following the TURN-ON PROCEDURES but have
a
