[time-nuts] 53132A Cooling fan

2015-01-11 Thread Loïc Moreau
Hi, My 53132A cooling fan is becoming extremely noisy so I have to fix it or find ear plugs fast. If anybody as encountered the same problem witch I suppose is common I will be interested if there is replacement part easily available for that purpose. Regards Loïc

Re: [time-nuts] 53132A Cooling fan

2015-01-11 Thread Loïc Moreau
over to the 132. It’s not a cheap fix, but better than scrapping a 132. Bob On Jan 11, 2015, at 12:59 AM, Loïc Moreau loic.mor...@eai.fr wrote: Hi, My 53132A cooling fan is becoming extremely noisy so I have to fix it or find ear plugs fast. If anybody as encountered the same problem witch

Re: [time-nuts] LNA and Alias

2014-12-26 Thread Loïc Moreau
: Bruce Griffiths bruce.griffiths@... writes: Are you sure that the setup is aligned to minimise AM response? Are you using cross-correlation? Bruce On Monday, 22 December 2014 5:08 PM, Loïc Moreau loic.moreau at eai..fr wrote: Hi all, My phase noise measurements system give

[time-nuts] LNA and Alias

2014-12-21 Thread Loïc Moreau
Hi all, My phase noise measurements system give erroneous results in close in phase noise measurements, I got humps in the 1Hz-1000Hz area as high à 20 dB more than expected. The setup is using a mixer to compare reference and DUT witch drive an LNA

[time-nuts] Close in frequency stability

2011-11-07 Thread Loïc MOREAU
Hi, Here attached is a TBOLT screen shot, I am unable to go an ADEV @ 1s not better than 10-8 with timelab when I am measuring a 10-134 10 MHz source, I suppose that it is due to the short term stability of my TBOLT around 20 ppt rms with spikes coming up to 80 ppt . Putting directly the

Re: [time-nuts] 8560E DC Coupling phase noise measurements

2011-10-26 Thread Loïc MOREAU
Of Loïc MOREAU Sent: Tuesday, October 25, 2011 1:01 PM To: time-nuts@febo.com Subject: [time-nuts] 8560E DC Coupling phase noise measurements Hi, In the process of measuring phase noise with a 'demphano' gear, I am a bit reluctant to connect my 8560E in DC mode to get 30 Hz low frequency

[time-nuts] 8560E DC Coupling phase noise measurements

2011-10-25 Thread Loïc MOREAU
Hi, In the process of measuring phase noise with a 'demphano' gear, I am a bit reluctant to connect my 8560E in DC mode to get 30 Hz low frequency sensitivity: the SA input is very sensitive to DC voltage and may be destroyed by a voltage larger than 200mV. So with a LNA having no

[time-nuts] My old new 53132A just arrived

2010-08-09 Thread Loïc MOREAU
Hi all, My first goal is to verify the frequency of my different RF sources : 4420B, some DDS, a N2PK VNA and ISOTEMP 134-10, the next step with the help of an Excel spread sheet to have some idea about their respective stability. Equipped with option 010, I would like to know how in which

[time-nuts] 5350A versus 53131A

2010-08-02 Thread Loïc MOREAU
In order to compare different frequency sources i am in the process to acquire old Agilent gear, i am looking to different directions 5350A counter or more modern 53131A the prices are nearly equals and I prefer more recent equipment so I somebody can give me an advice to look further on