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Well i looked at the manual backdating and the only 2 boards that change between 2804 and 2812 Are the CPU board and the sweep board no mention of changes to the motherboard or other boards . I

The? 1962 manual, with vacuum tube rectifiers, has the polarity correct, so the error oscillated. --Tom -- Prof. Thomas H. Lee Allen Ctr., Rm. 205 350 Jane Stanford Way Stanford University Stanford,

Couple of things to think about: 1) Is the motherboard the same between the 2804 and 2812 ? 2) What about the PALs on the CPU board 3) Also check that the CAL constand definitions are the same between

i am banging my head right now which doesnt happen all too often so maybe somebody here has experienced a similar issue : i have a 8341B Sweeper ,? the serial# is 2804A and the FW Date is 1982 ,? i

Loo at these guys. They have a great selection of strip light all run on DC. Used them in my kitchen reno. http://lightsandparts.com/

On Fri, Mar 4, 2022 at 04:06 PM, Jim Adney wrote: Hi Jim Adney, Yes, my? write error R40 is 10K. The R40 problem is solved, I have another 10K resistor but 15W instead,?that's what i had in my hand

Jinxie, There are 2 external BNC F connectors that give you access to a 10 MHz signal. One of them is directly at the output of the reference oscillator while the other is a divided output of the

I gave up and use LED strip lighting, fluorescent style lamp assemblies.? They emit less noise than?fluorescent lamps did, and I know where the peak is so I live with it.? Mind you, if needed I

On Fri, 4 Mar 2022, Sam Reaves wrote: It is $34 plus $9.99 FedEx Air Special shipping, comes to $43.99 now. Everything gets more expensive these days, huh? :) Just purchased 200 too, just in case --

One solution to consider is a 10 MHz source for all your instruments - Leo Bodnar makes a good one for about $90. That way all your instruments see the same reference and will report the same

@Bruce It's so frustrating only having a short time every day to look into this problem. I only get enough time to perform a one or two quick checks each time at best. Now it's very late here again

Diode limiters do create IM products and the same also applies to YIG filters which also act as limiters if a certain power is exceeded ! It however doesn’t matter much in a practical sense as the

The following files and folders have been uploaded to the Files area of the [email protected] group. * /856X , 599X Attenuator replacement and cal Battery Replacement Data .txt (

If you are talking about the attenuator O rings they are available from The ORing Store: https://www.theoringstore.com/store/index.php?main_page=product_info&cPath=368_12_2185&products_id=43455 I

I don't think so.? Seems like that would defeat the purpose.? Of course, linearity is an illusion after all, so some intermodulation is inevitable.JimSent from my T-Mobile 4G LTE Device

The cathode current of V1 and V3 is through R40.

Interesting technology thanks for sharing,? does anyone now if this device would generate passive IM products when it goes into limiting?? A diode limiter certainly would. Ted WR4T

I'd vote with the "run 'em on clean DC" crowd, for lowest added interference. The key word though, is "added" - we're already awash in EMC interference from almost all electronic equipment around, so

A few thoughts: 1. Are you checking the INT connector or the 10 MHz out? The INT connector is directly at the output of the oscillator. I'd see what that gives you. If that looks good and the 10 MHz

Should be a clean sine wave. I would replace this oscillator with one that has a sinusoidal output. There are two many zero crossings and this signal will probably get “squared up “ into a square