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Re: Issue with homemade diode power sensor for HP meters
No You cannot have a 50 Ohm Thermocouple, a Thermocouple is effectively zero Ohms. 73 George G6HIG?
By george edmonds · #92716 ·
Re: A homemade diode power sensor for HP meters
http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1975-10.pdf has info and diagram of sensor internals.
By Andy ZL3AG · #92715 ·
Re: E4406A MATLAB Application
Greetings. For those who use the HP E4406A VSA, I wrote a python script that concatenates several 10MHz spans to make a wider spectrum plot. The tool uses TCP/IP to commuicate with the E4406A, so no
By ve2zaz · #92714 ·
Re: E4406A MATLAB Application
Correct, SSM is just an alternate display for the analyzer, intended to passively record and replay trace data based on the current control settings. Dick's program is an alternative way to access
By John Miles · #92713 ·
Re: Issue with homemade diode power sensor for HP meters
Is there any other company on the planet who produces 50 OHM thermocouples? It seems odd that such a thing is unobtainable.
By RFI-EMI-GUY · #92712 ·
Re: Readings from 436A power meter using 82357B USB-GPIB?
Hi Staffan The physical layer for IEE-488 itself is essentially unchanged from the original.? 488.2 deals more with the messaging protocol. This is where all the "universal" commands originated (all
By Daun Yeagley · #92711 ·
Re: Readings from 436A power meter using 82357B USB-GPIB?
Hello, Many thanks. Notice that I replied to your direct mail. I don't think the problem lies in the 436, but rather in how the USB dongle 82357 performs communication. Don't know if the GPIB
By Staffan · #92710 ·
Re: Readings from 436A power meter using 82357B USB-GPIB?
Hi Saffan, I sent you in PM some military manual for 436A. Go from page 3-18 onward, there is about HPIB communication. Milan
By Milan Vasic · #92709 ·
Re: Intermittent noise on HP 8568B
wrote: I had a bad diode in the log amp in IF section of my HP 8566B that manifested in a similar manner. See < /g/HP-Agilent-Keysight-equipment/message/73067> for the thread. I have
By Sigur?ur ?sgeirsson · #92708 ·
Re: Intermittent noise on HP 8568B
I had something very similar on my 8568B. It turned out that one of the coax connectors on the A23 assembly was loose. The noise would come and go as I moved the coax cables inside the RF unit. The
By Orin Eman · #92707 ·
Re: Readings from 436A power meter using 82357B USB-GPIB?
Hello, Some more findings... It seems like my Arduino can talk to the instrument after all. Pulling REN low (active) makes it listen to commands sent to its listen address. However, with the REN
By Staffan · #92706 ·
Intermittent noise on HP 8568B
While I was working on my power sensor thing, I wanted to check the spectrum of some signal generator by using my 8568B spectrum analyzer. About one year ago, I had the problem that the analyzer had
By Tobias Pluess · #92705 ·
Re: WANTED: HP 606B Sig Gen RF Output Attenuator Module A10
Graeme, at one time I had one of these attenuators (NOS, if I recall correctly).? It's been years since I've seen it, but it might still be squirreled away somewhere in the shack.? And I don't
By Jeff Anderson · #92704 ·
Re: E4406A MATLAB Application
...and clearly I should have checked if Dick had replied while I was composing my own reply.? Apologies for the duplication of effort! - Jeff
By Jeff Anderson · #92703 ·
Re: E4406A MATLAB Application
Please correct me if I'm wrong, but looking at Dick Benson's description of his MATLAB application (as described in the PDF included with his MATLAB files) and comparing his features with those in
By Jeff Anderson · #92702 ·
Re: E4406A MATLAB Application
Yes, I am aware of John's excellent work and use it often. This offering complements his work. Dick
By Dick Benson · #92701 ·
Re: E4406A MATLAB Application
KE5FX (aka John Miles) has a program to do this (SSM.EXE) as part of his GPIB toolkit http://www.ke5fx.com/gpib/readme.htm and http://www.ke5fx.com/gpib/ssm.htm for details. Dave Sent: 19
By David C. Partridge · #92700 ·
Re: Issue with homemade diode power sensor for HP meters
Tobias, You will see, not easy task to linearze and to compensate this kind of detector if you need a accuracy. 1. I sugest you to use some of SPDT switches (well matched, small leakage and small
By Milan Vasic · #92699 ·
E4406A MATLAB Application
Greetings, ?There appears to be a continuous wave of decommissioned Agilent E4406A "VSA Series Transmitter Tester" boxes hitting eBay.? ?They have a lot of bang-per-buck but have some limitations
By Dick Benson · #92698 ·
Re: Issue with homemade diode power sensor for HP meters
Hey Jeff, I didn't see your message, it was not in the other thread! But thanks anyway, I had the same idea as you suggested - I will soon receive some sensors with a blown thermocouple, and there I
By Tobias Pluess · #92697 ·