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HP8656/8657 Hum sidebands
The close-in spectra of both my HP8656B and 8657B signal generators show 100Hz and harmonics sidebands at levels of -50 dBc, gradually falling away up to 3 kHz offset. The 8657B, which is somewhat
By alwyn.seeds1 · #91847 ·
Re: Off Topic : What is the 10 second accuracy of a Trimble 57963-D GPSDO?
The reason the 10 s stability is dominated by the OCXO is that the GPS feedback loop is much slower, so it won¡¯t do anything useful at this rate. People have been characterizing 73090 OCXOs, e.g.,
By Carsten Bormann · #91846 ·
Re: Off Topic : What is the 10 second accuracy of a Trimble 57963-D GPSDO?
PS : The builder states that this unit runs Lady Heather in it`s firmware wrote:
By donald collie · #91845 ·
Re: Off Topic : What is the 10 second accuracy of a Trimble 57963-D GPSDO?
Hello Carsten. Interesting that you say that it`s the OXCO that is the determining factor, not ,for example, the number of satellites aquired, or something else. I shall store that snippet of
By donald collie · #91844 ·
Re: Off Topic : What is the 10 second accuracy of a Trimble 57963-D GPSDO?
For 10 s, that depends almost entirely on the OXCO in there. You may find more info about that. Which one do you have? Did you try looking at it with a tool called ¡°Lady Heather¡±? This one is
By Carsten Bormann · #91843 ·
Re: 8970B learnings
Peter, can you post a picture and/or PN of that bad YTO? I can actually recall at least three YTOs that were used in the 8970. The last version is a small one, Agilent standardized on that YTO for
By pianovt · #91842 ·
Re: [RSGBTechnical] Some suspiciously cheap RF test kit on eBay UK
That's usually the function of the bid size.
By Peter Gottlieb · #91841 ·
Off Topic : What is the 10 second accuracy of a Trimble 57963-D GPSDO?
I`m hoping that there are members of this group who utliise the above serial number Trimble PCB as a frequency substandard for their H/P equipment, and know the accuracy that can be expected from this
By donald collie · #91840 ·
Re: Missing button cover on HP network analyzer.
Yep.
By Razvan · #91839 ·
Re: Missing button cover on HP network analyzer.
Are you talking about the soft key cover?
By Pete Manfre <pmanfre@...> · #91838 ·
Re: Missing button cover on HP network analyzer.
I just realized I wasn't specific enough, sorry for that, but I hope the image I attached cleared up any confusions.
By Razvan · #91837 ·
Re: Missing button cover on HP network analyzer.
The cover itself, it goes over all the buttons.
By Razvan · #91836 ·
Re: 8970B learnings
Son of a gun. The unit is working! Peter
By Peter Gottlieb · #91835 ·
Re: Missing button cover on HP network analyzer.
Which button?
By Pete Manfre <pmanfre@...> · #91834 ·
Re: [RSGBTechnical] Some suspiciously cheap RF test kit on eBay UK
Google "bidder collusion"
By Andy ZL3AG · #91833 ·
Missing button cover on HP network analyzer.
Hey guys, I'm missing the button cover on my HP 8752C. I know I'm not the only one with this issue and I know they're close to impossible to find. Is anyone willing to measure it and take some photos
By Razvan · #91832 ·
Re: HP 141T sn:1850A 16959, hp: 8556A sn: 1907A 04190 and hp 8552B sn:1841B sn:1841A15130
Resistors can be bought from Digikey, Mouser and others.
By Peter Gottlieb · #91831 ·
Re: 8970B learnings
IF Cal¡­ Pete
By Pete Manfre <pmanfre@...> · #91830 ·
Re: 8970B learnings
E80¡­ memory loss. Replace battery and do an if Cal (11.1 SF I think¡­ one of the SF's anyway) 15 dB enr ns must be attached.... All will be well. Pete wa2odo
By Pete Manfre <pmanfre@...> · #91829 ·
Re: 8970B learnings
Do you happen to know which 8350 plug in uses that VTO?
By Peter Gottlieb · #91828 ·