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Date
Re: HP-8753E Which EPROM Holds CAL Constants?
The calibration along with serial number info reside in a XICOR EEPROM , if I remember correctly it was a 2864 , this EEPROM is soldered on the board unless somehow you got a hold of one of my special
By Lothar baier <Lothar@...> · #123476 ·
Re: HP-8753E Which EPROM Holds CAL Constants?
Hi Marcus: I am referring to the service calibrations not the kit constants. I am able to write the calibration constants, and retrieve cal kit, and probe tables. I am referring to Calibrations such
By Rich Miller · #123475 ·
Re: HP-8753E Which EPROM Holds CAL Constants?
Rich, what kind of cal constants are you referring to? * Calibration kit constants as well as power probe tables? * Calibration data for the 8753 HW? I think the answers are. * NVRAM, i.e. the
By Marcus Gustafsson · #123474 ·
Re: A homemade diode power sensor for HP meters
Understood , Generally if I were to pursue a sensor design I would design a USB sensor rather than pursuing a replacement for a existing sensor , there are small mixed signal Processors with USB such
By Lothar baier <Lothar@...> · #123473 ·
Re: Scoping the Power Rails [8566B]
The ¡°ref unlock, oven¡± messages are normal when the unit has not been plugged in for a while. It takes about 5 min. for the OCXO oven to come up to temp., there is no accurate or no output from
By Don Bitters · #123472 ·
8562A SA buying
Hi there, mates! I am thinking on buy a 8562A for my lab and I ask for advice. It has option 026, so 9 kHz to 26.5 GHz. Is this a good unit in general terms? I wonder how can I see the unit is ok in
By RubenRubio · #123471 ·
Re: A homemade diode power sensor for HP meters
I didn¡¯t think you were. My ¡®you¡¯ was just a general case. Sent: Wednesday, March 09, 2022 2:03 AM To: [email protected] Subject: Re: [HP-Agilent-Keysight-equipment] A
By Tom via Metronet · #123470 ·
HP-8753E Which EPROM Holds CAL Constants?
As I troubleshoot the problem of writing CAL Constants to my 8753E it occurred to me those constants may not be stored in the main EEPROM U402. On the CPU Board it appears there are a variety of
By Rich Miller · #123469 ·
Re: Scoping the Power Rails [8566B]
Okay - I have a quick update. I tested the output from the front panel 100Mhz CAL out BNC socket and it shows 100Mhz spot-on on my 1Ghz counter and a nice clean stable sine wave on my 350Mhz Tek
By Jinxie · #123468 ·
Re: Agilent 8714ES missing graticule
Hi Maurit Great idea, thank you for the tips. Any info for the type number and place to purchase ? Kind regards Kurt Fra: [email protected]
By Kurt Poulsen · #123467 ·
Re: Agilent 8714ES missing graticule
Hi Kurt, I recommend you replace the CRT with a VGA LCD display. It's very simple. You will solve the problem and have a beautiful VNA that you won't replace for a long time.
By maurit · #123466 ·
Re: Scoping the Power Rails [8566B]
@Bruce No problem! The thread is so long now it's getting confusing and even more so for newcomers. So I'm considering starting a separate one off from scratch as soon as I reach a suitable juncture
By Jinxie · #123465 ·
Re: HP 5334A Oscillator Support PCB
Hi, a very good description by Harvey! However, I would like to add that there is a major difference between LF grounding and RF grounding but it is a different story... G?ran
By G?ran Krusell · #123464 ·
Re: A homemade diode power sensor for HP meters
Oh I was not talking about myself, I have calibrated power sensors and meters this was just for people to consider
By Lothar baier <Lothar@...> · #123463 ·
Re: A homemade diode power sensor for HP meters
A couple of thoughts on that¡­ It assumes you don¡¯t have friends with a suitable sensor, or are unwilling to pay a commercial cal house to do it for you. Also, if you have a decent SA and sig
By Tom via Metronet · #123462 ·
Re: A homemade diode power sensor for HP meters
the problem you run into when developing any substitute sensor ,? which is calibration , in order for a sensor to be of value you have to calibrate it which usually is done by comparing it to a
By Lothar baier <Lothar@...> · #123461 ·
HP 3324A - sweep menu frustrations
Hi all, I've had this minty 3324A for a pretty long time now, and I just stopped trying to use it at some point due to frustrations with setting up sweeps on it. Hopeful some good people here would
By Radu Bogdan Dicher · #123460 ·
Re: HP 5334A Oscillator Support PCB
regarding grounds: you're dealing with what's called circulating currents, or ground currents. Let's say that you have an analog circuit, and that its ground is common (on the board) with a high
By Harvey White · #123459 ·
Re: Scoping the Power Rails [8566B]
Re: voltage jumping around - not necessarily, the sweep actually stats and stobs between bands. Doing the manual scan is probably a good idea - sorry about the confusion on the
By Bruce · #123458 ·
Re: Scoping the Power Rails [8566B]
Gonna have to leave it for now as it's once again getting really late here now. Thanks for all the help, guys, I'll be back tomorrow....
By Jinxie · #123457 ·