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Any function generator that does not use a D/A and a LUT works that way. This includes Wavetek, HP, Tek and others. Have you looked at the parts list for your instrument? -John ===============

Very few tunnel diodes were used as microwave amplifiers. Usually they were used to provide a trigger pulse for an oscilloscope or very fast pulse for TDR or sampling scopes. If you need triggering,

I'm going to guess that you mean the 34401A. No, but the manual is right there on agilent.com so you can see for yourself when you have to use the menu. Hard to answer when you don't say *why* you are

Thanks, Gents, That clarifies the issue for me. Early transistors were mostly low frequency as I remember. If I am confronted with one of those tunnel diode circuits, I will consider using fast

Dear Marco and Gianfranco, your explanations are right , If the equipment has this feature, you can also use the Marker noise function to display the average Noise Power density expressed in

Dear Gianfranco, thermal noise power density at 300 K is approx -174 dBm/Hz. 174-137 gives 37 dB NF - a little high for a S/A. My ADV R3361A specification says (page 10-3) thet the average noise level

Hi, I am trying to measure/calculate the noise figure of my S.A.(Advantest3361). -the specification says "Average noise level -121dBm; I am surprise that this indication is a power not specifying any

Ciro My (readable :-) ) copy of the manual lists T1 part number as 9100-3882 . Unfortunately the manufacturer is listed as Hewlett Packard so it is unlikely you will ever be able to get the "specs"

Hello all! I have an HP3552A which has (I believe...) its power transformer faulted. The P/N on its body is 9100-3882 but the code read on the service manual is 9100-3451 (T1). This part cannot be

Hi Tom yes they are basically very simple but in the 60s they were extremely difficult to make reliably. Modern technology vapour-phase deposition, ion mplantation etc makes then much easier to

I thought tunnel diodes were simple. You can get GaAs and Ge tunnel diodes from Russia on ebay and the price is not bad. Some 4.5 mA Ge diodes

Tunnel diodes are still available from "American Microsemiconductor Inc." I got a promoting mail from them a couple of month ago. Look at

There are very few simple ways to get pS pulses, even today. -John =================

Thanks a lot, do it. Regards Gianfranco

There are other diodes that have negative resistance regions, such as the Gunn, with characteristics similar to TDs, but used pretty much only for microwave oscillators, and the DIAC (if you count

Hello, I was wondering if anyone has the attenuator assembly for an HP606B. I understand that one can use an HP 355 outboard of the generator but I'd prefer to have the assembly to restore my unit to

It's simple, transistors got a lot faster. If the basic circuit is fast enough, you don't need any such compensation. PIN diodes are inherently slow devices, so their applications are completely

The important characteristic of a tunnel diode is it's negative resistance region. This provides a switch action that can snap on far faster than anything else available at the time. Tunnel diodes are

A tunnel diode is a low power high frequency negative resistance device. They were used at a time in the late 50s and early 60s before silicon planar devices became readily availably to produce

For tunnel diode and GR lovers, I just scanned what I consider a gem: the manual of GR 1167-B 500 MHz scaler. I bought it with a pristine GR 1192 counter and all the original manuals at