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Yes it should be good enough at those speeds, after all the 1S1 itself is built with leaded components. The ground connection is as responsible as anything to keep inductance down. Unfortunately I

-3.7 vs -5.3 when I switch between 10 and 5

From what I have seen of Tek equipment you have an early production unit. The later case allowed for the four scope calibration units the 106, 191, 184 and 067-0502 to be stacked on top of each other

The type 106 arrived today from Germany. It’s in quite a very good condition, albeit a bit dusty. Which is to be expected. I haven’t fired it up yet. The reasons being that the line cord the

Signal at TP1335 is responsible for A vs B sweep. You observed that B sweep works in 5/2/1n mode (is my memory correct?). B sweep is used in 5/2/1n settings even in A mode and as far as I can tell

The through-hole resistor on the end of the coax seems to be OK down to 1 ns risetimes, maybe as far as 0.5 ns, but I wouldn't try and do anything faster than that. On the other hand, it's essentially

I think the problem is in horizontal amplifier because I can see nice A sweep on R1307 and nice B sweep on R1322 coming in and what comes out (TP1364) is rubbish. Whatever is switching between the two

There is voltage I set at the delay pot in non 521 position and fixed 13V in 521 position This is both on the U910 as well as the base of Q902B

I hope no one is using a through-hole 1/4W resistor for this. The biggest I'd go is 0603, usually a 0402 placed on the PCB at design time.

Hello: We use several P6156, to use on 7104 aand 7904 TEK with 7A29 Vert. They are the best but beware used on epay, often abused and missing parts. The best have the original case and all

Hi Charles, I suggest Picosecond Pulse Labs (PSPL) 5520C's as alternative for P6156 + 013-0237-00 and P6150 + 013-0251-00/01's. The 013 PN's are the SMA Voltage Pick-Offs for these two Probes.

I would in your case take a magnifying glass and really strong light source and thoroughly check one and every solder joint. I known you said you resoldered components around triangle generator but

Did you already check CR245/CR248/CR250/CR246 and resistors R245, R248, R250? The voltages you measured at two sides of the bridge are not consistent if all the components are good. Perhaps component

Cleaned cam switch contacts twice, no difference between the first and second. Replaced both JFETs (constant current source one, lower part on schematic, was good when cold, stopped working in a

I wouldn't even consider these "probes", they're part of a system and I bet that these "probes" have to be soldered in-circuit to get best performance. At a previous job I had to solder in some

Also, the link on the last post of the EEVblog thread takes you to a homemade version that is good to 1.6 GHz (1 dB), -3 dB is 1.7 GHz...

It does appear to be less than perfect... you get what you pay for! https://www.eevblog.com/forum/rf-microwave/response-of-cheap-rf-active-probe-from-ebay/

For the GHz range, I only found the two as listed in my original post... I hadn't considered an active probe, figuring that it had to cost more (and be subject to electrical damage from overload) than

Yikes, with that layout, I am skeptical. What is the flatness over its bandwidth and what is its true -3dB point? It's basically an antenna: sure, it'll get a signal through, but you can't really rely

I just ordered one of these, which I think does basically the same thing: https://www.ebay.com/itm/RF-Active-Probe-0-1-1500-MHz-1-5-GHz-analyzer-oscilloscope-RF-cable-included/332393676082 I am not