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FYI - I got the mainboard off the unit last night.? For those who may have this issue in the future, it is possible to get this board off without removing all of the cards.? You do have to remove

Please define the 'known good probe' in your test setup? Does Jinxie have one? I thought the aim of the exercise was to demonstrate the BW of the ebay probe. If you put two probes in parallel and

It is the optioal 10MHz TCXO for the HP 5315 Counter. It's covered in the service data.

JMR said: "The problem with trying to do this with two probes in parallel (using a BNC T piece) is that you will end up with double the loading so I'd expect this test method to be doomed to failure

What device(s) was this oscillator made for?? Is there any documentation for checking whether the board functions correctly?? The board is marked SERIES 1824. Thanks -- Joe White KW4YW

Hello, Does anyone can confirm that the I/O-interconnect cord between the HP8703A and its lightwave test set is the same cord as between an HP8753A and its S parameter test set HP85046A or between the

A passive scope probe is more complex the just a resistor divider. Take a look at the original patent for a scope probe. Allen Hill KI4QCK

Anyone who has tried to measure one, that's who! ;)? ? ? ? ? ? ?Jim Ford?Sent from my T-Mobile 4G LTE Device

Just in case this helps someone else I've found it now. My A9 board looks like the one here https://jvgavila.com/hp8753c.htm And as described in the link, the procedure IS detailed in the service

Gosh! Who'd a thought testing a passive probe could be so tricky?

ok thanks, unfortunately totally different layout to my A9 board. the manual isn't very helpful at all.

Yes. The typical instrumentation grade RF source (eg. signal generator) can be modeled as an ideal voltage source in series with an ideal 50 ohm resistance (impedance). It is a desirable condition in

I think the A9 CC Jumper is in position E33-E34. See the picture attached but I am not 100% sure because there were different A9 CPU boards for those series and they have slightly different layout.

A BNC sleeve is exactly what it sounds like it is. It fits over the bare probe tip, making a press fit connection to the inside of a female BNC connector so that you can make a good, albeit high

The problem with trying to do this with two probes in parallel (using a BNC T piece) is that you will end up with double the loading so I'd expect this test method to be doomed to failure if the aim

Do you have the adjustments tab which shows which jumper is the A9 CC jumper ? the manual I have just keeps saying move the A9 CC jumper, but doesn't actually say anywhere which jumper that is on the

Sorry - need a bit of clarification here. "BNC adaptor sleeve" - what is that? Does it fit over the probe tip or something?

I'll try that, Robert, thanks. It'll probably not be today owing to time pressures but I'll report back here in due course...

The 10073C should have come with a BNC adaptor sleeve. So should your "good" probe. To eliminate all loading and source imedance issues connect a BNC T to the signal generator output and directly

It's made for HP scopes and logic analyzers like the 16500C 16700B... Could be...