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Re: 48-440 Hz AC power compatibility option (HP 8660B OPT 003) - acoustic noise (hum/buzz) from the unit?
David, I worked on many 8660's and only once did I come across a buzzing power transformer.? The customer complained about it and as it did uncharacteristically buzz.? ?(no recollection if it had
By WB2UAQ · #150713 ·
Re: HP 478 A? Thermistor mounts
Jeremy,? Maybe Div 4 is Standford Park.? ?I think they were the cal lab the service centers (when there were about 5 or 6 of them) used.? ? ? ?I remember using the 432A/478 to test the 50 MHz
By WB2UAQ · #150712 ·
Re: Shipping overseas?
Package forwarders are tough to beat when it comes to small parcels. MyUS ships 5 pounds to Germany through DHL Express with decent tracking for $25-30. I don't know how high the cutoff value is right
By Gabor Szucs · #150711 ·
Re: Shipping overseas?
Thanks for all the ideas on shipping overseas, I will try some of the other definitions recommended on the custom form 1st. I did look into a flat rate box, the cost was about $85.00 for a medium
By Gary Hitchner · #150710 ·
Re: HP8510C TRL Calibration
Hi jjoonthan, In using https://scikit-rf.readthedocs.io/en/latest/api/vi/generated/skrf.vi.vna.hp.HP8510C.html at the line in first line in the program vna =
By neil · #150709 ·
Re: HP 3403C True RMS Voltmeter display fault
Nah... 3-phase fed 500V raw DC rectifier stage in an 8kW TWTA, PSU let go. The flames reached the ceiling in the workshop! While the 32A wall breaker/RCD trip failed to open. We had a few such
By Dave_G0WBX · #150708 ·
Re: Shipping overseas?
I¡¯m not sure what German policies are, but in the US, repair/replacement parts are generally exempt. I¡¯d assume for that reason, that some companies have different part numbers for a standalone
By Ed Marciniak · #150707 ·
Re: Shipping overseas?
Well here some examples (before Trump): If you buy in US something for 100$ & 25$ transport and use flat rate tax rate, then the receiver in Germany must pay import tax 22,50€ total = 22,50€ Sum
By Heinz-Peter Deutsch · #150706 ·
Re: Shipping overseas?
Use USPS flat rate international box Fill out content as "sample parts" value $10 Dont mention ¨¦lectronics J
By Froggie the Gremlin · #150705 ·
Re: 34401A issue
No problem. Let us know what was the faulty component just in case somebody else will have the same issue in future. Regards, Razvan
By Razvan Popescu · #150704 ·
Re: 34401A issue
Thanks.? I get 4 errors: 612, 613, 618, 619 Three of these have to do with resistance, maybe I needed to short the input, but as resistance works (I just tried with a range of high precision
By Peter Gottlieb · #150703 ·
Re: HP8510C TRL Calibration
I see the 'switch terms' can be obtain using skrf.vi.vna.hp.HP8510C ( https://scikit-rf.readthedocs.io/en/latest/api/vi/generated/skrf.vi.vna.hp.HP8510C.html ) so it'll be interesting to see how that
By neil · #150702 ·
Re: 34401A issue
Hello Peter, Try to run a Self Test and see if it passes it. Could be anything but older 34401A have relay faults. The OMRON relays can be found but not the COTO relay. Newer 34401A had a newer
By Razvan Popescu · #150701 ·
34401A issue
I have an Agilent 34401A which I've used at my bench for many years. Today I went to measure a 12 volt battery and it just started clicking. I tried it on a power supply and auto ranging works fine
By Peter Gottlieb · #150700 ·
Re: Shipping overseas?
Maybe. Ship printed circuit boards to Germany, from the U.S., using a 'Priority Mail International Flat Rate' medium box. (or small, or large too) AFIK, you gotta use customs form 'PS Form 2976-A' On
By Roy Thistle · #150699 ·
Re: Shipping overseas?
Hi Gary, I had similar problems from Canary Islands to Canada. They told me Canada would not allow electronics so I send the stuff to Germany with a friend and he could send it to Canada with DHL
By DF6NA Rainer · #150698 ·
GPIB/HPIB cables
Hi all, If anyone is interested, Sphere Electronics has some gpib cables going cheap. https://www.sphere.bc.ca/recently-added/ Regards, Warren
By Warren · #150697 ·
Re: HP 3403C True RMS Voltmeter display fault
Polymer capacitors are readily available for voltages of 100 and under although modern low ESR electrolytics make perfectly fine replacements for tantalums and are, of course, available in a wider
By Harold Foster · #150696 ·
Re: HP8510C TRL Calibration
I note the HP8510C driver, so i should be able to use this to access the 'switch terms. Also i'm interested to see how fast it reads the s-parameters! Thank you for this, N
By neil · #150695 ·
Re: HP8510C TRL Calibration
However, when i run from the PC and file data, the first line in the s2p file is: !HP8510C.07.14: Aug 26 ?1998, so that indicates a different software version. (well the monitor is CRT, so pretty
By neil · #150694 ·