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Agilent E8357A
joeqsmith:
Attached comparing Caesarv's r4p12 file with mine. Ceasary's is 12, mine is 21. Looking at the RAW data, the peak-peak and standard deviation are very close but the mine for what ever reason reads about 5dB higher than expected. Also notice that mine doesn't exhibit that step at 3GHz. I was actually thinking to make a cal file that just adds a fixed offset to the raw data.
Maybe mine had some different hardware revision that caused this offset and removed the 3GHz step.
DELTA is the difference from the RAW and the power meter reading. With the RAW data being so stable, I suspect most of this error is my Signal Hound and not the PNA's source. When I made this measurement, I used a short section of semi-ridged to attach the SA.
Miek:
Keep in mind all the stuff I've written above is just my best guesses at how it could work, it might not be the power meter response in there. It could be reference receiver response instead, and that's why the phase is normalised to 0? Thinking about it some more, I would expect the power meter trace to be pretty flat from the source calibration adjustment.
Are you able to create traces for individual receivers like in the attachment? If so, you could do that and then fiddle with the values in the mxcalfile to see what changes.
Forzaman:
Received my HDD and duplicated the drive. Next task is to replace the battery on the CPU board. The system date keeps reverting back to 2088 when I power-up the system. The old battery is a RayoVac BR2335. They seem hard to come buy these days, can only find the CR2335. The battery clip seems to be very tight. Don't want to damage anything by using too much force to pry it. Caesar... can you give any advice on changing the battery? There is no mention of battery replacement in the service manual.
joeqsmith:
Same here. Purely guess work as I don't see where it is documented. Yes, the PNA has a few ways to look at separate receivers. I mentioned using this earlier.
My question for Forzaman and Caesarv, if they rename these cal files, exit and reload the PNA program, display S11 with nothing connected, does theirs display 0, or 6ish dB? This will at least make sure my PNA is not doing something abnormal.
--- Quote from: Forzaman on November 12, 2022, 03:44:41 pm ---Received my HDD and duplicated the drive. Next task is to replace the battery on the CPU board. The system date keeps reverting back to 2088 when I power-up the system. The old battery is a RayoVac BR2335. They seem hard to come buy these days, can only find the CR2335. The battery clip seems to be very tight. Don't want to damage anything by using too much force to pry it. Caesar... can you give any advice on changing the battery? There is no mention of battery replacement in the service manual.
--- End quote ---
:-DD I just changed mine last month and ran into the same problem. The cost for the BR seemed like it was over $20. I tossed in a CR. Not expecting it to last as long.
Forzaman:
--- Quote from: joeqsmith on November 12, 2022, 03:57:47 pm ---Same here. Purely guess work as I don't see where it is documented. Yes, the PNA has a few ways to look at separate receivers. I mentioned using this earlier.
My question for Forzaman and Caesarv, if they rename these cal files, exit and reload the PNA program, display S11 with nothing connected, does theirs display 0, or 6ish dB? This will at least make sure my PNA is not doing something abnormal.
--- End quote ---
My VNA is dismantled right now. Going to pickup a battery on Monday. If Caesar doesn't reply by then, I will give it a try and let you know.
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