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Note that the problem could also be in the 85102 IF unit. Do you have either the test set simulator or a second test set of some kind? The test set simulator is a plug that fits the IF RF outputs and

Ok so the 8510 test-sets have 4 samplers , 2 of them are connected to the couplers , the other 2 are reference samplers , those are connected to the switch/splitter , the RF coming in from the source

Another measure is to look at the level of the LO feed through at "0" frequency. Usually expected to be less than -20 dB (that is what I see on 8566 SA) Cheers! Bruce Quoting nj902 <wb0emu@...>:

If the analyzer shows the correct level from the calibrator - it's probably fine.? If your instrument requires you to connect a jumper between the calibrator output and the RF input - that is an even

Thanks, I have to confess this happened to me recently with a spectrum analyzer. Currently it seems to work fine where the -10dB calibrator shows -10dB on the display. Is there ways which I might

I have a complete 8516 VNA setup and it was intermittently working with a standard DB25 Thru cable. Right now I am stuck on "NO IF FOUND" error and out of ideas.

My quick knee-jerk without studying the schematic is, if it’s in the signal chain, you probably want a high-gain low-noise part like a BC556. If you only have a 2N3906, it would be okay for debug.

Hi All, I have been puzzling for a while but I'm not sure that I have got to the truth yet. I have a H-P 334A Distortion Analyzer which I put away a while ago and now I find that something is not

"...is it possible that although the input levels look fine on screen when in reality the analyzer is actually seeing higher than -30dB at it's input..." - Not only is it possible, it is very

If the signals are radiated then using cables and adapters with very good shielding can help mitigate the issues but if they are conducted than things become difficult!

There might be cases where a spectrum analyzer is used to measure a particular signal that is surrounded by many adjacent strong signals. Perhaps the signal measured isn't as strong as the adjacent

My 8640B came with trashed RANGE and DEVIATION knobs. Rather than hunt down spares, I cobbled my own. I took a generic knob and simply attached the old skirt to it. It looks wrong but works right.

"Lothar baier" <Lothar@...> writes: Interesting, thanks for sharing. I checked my own manuals. The one I purchased from Artek has the 2812A component level service manual for the 8340B,

Hello George, from 12,000 miles away. If only I had met you when I lived and worked in the UK. I have a couple of 8640Bs that I’ve managed to keep going – the odd capacitor failing, and those

Hi Ruben, sorry, for white/white-red wire, the AC current for “no plugin” is 2.67A, not 267mA…I forgot to multiply by ten for this measurement, my probe was on the scale 100mV/A. Yves De :

LO that, My experience would not agree with your thoughts. The one I recently bought off eBay seems to work as described in my previous message to Lou. NI software seems to like it as does at least

Its the 8516A 40GHz testset ! The manual outlines that FW 11.88 is required and SN 2812A or higher. Yes there are hardware changes, the CPU and sweep board have different part numbers , the 8516 uses

Not surprised at all ! Virtually all “NI” GPIB/USB adapters sold by Chinese vendors on ebay are Fake , unfortunately this also starts to spill over on US sellers as people who bought them from

Hi Lou, I believe I have NI-Visa 19.5 64 bit installed. I did an upgrade to the newest version tonight as the tool claimed I had an old version. I can confirm that both my Old and New NI-GPIB-HS both

What’s the test set and does it provide any reason why it requires a newer serial number source? I had a compatibility issue with my 8341 and 8510C but it was firmware related and simply fixed by