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Actually, a 7S11/7T11 combo will give you pretty accurate measurements of RF signals (typically better than a power meter). The signal needs to be large enough though, if you talking 0dBm that's

Hi Mark, thanks for the link. I'll have a good read through it. As for further failed tantalums, that could well be the case as the video amplifier is still not running correctly. Fortunately

Hello Mike, Thanks for your reply. I did some checks on some regulated voltages indeed in terms of voltage level and ripple or other nasty oscillation issues and all looked clean. However, not really

Hi all, I've been trying to troubleshoot an amplitude problem on my new 492, which has had multiple other little problems along the way. At this point, I can get a stable display and frequency is OK,

I prefer to use vintage equipment to calibrate my oscilloscopes, mainly because I enjoy the challenge. I just hate to see these golden age of electronics jewels going to the scrap and being

In the aforementioned link to enable options, follow the process as usual, but instead of sending the command 'WORDCONSTANT:ATPUT 327690, 1'. send 'WORDCONSTANT:ATPUT 327690, 0' (without quotation

James, I do not know if the 494XX type is the same or not in its guts. This site may help: http://www.ke5fx.com/49x_notes.pdf. Page 9 may be of help. The resistors he mentions should be increased to

Wilfred: All of the capacitors that you mention are part of the power supply, and their ripple is not specified, as they are part of pre-regulator circuitry.? Can you check the regulated DC voltages

Hello again, It's been a while since I wrote and had to say goodbye to my 465 oscilloscope, but I managed to find another one and luckily without any issues. The serial number is 109003, which is I

ricky covell <hypomnnqn@...?subject=Re:%20Salvage%20yard%20rescue%3A%20Tektronix%20TU-50.%20Some%20questions%20from%20a%20non-tech> wrote: Date: Tue, 11 Mar 2025 21:29:54 PDT (The leveler)

Hi. I have this 492 which was working. Last week a friend donated a largely stripped 492 whose remaining parts I thought could be tested in the working unit. First thing to test was the

HI Bill, You said " but it quickly turned back to monochrome within a few seconds." Was that with the LCD screen fed from the VGA signals from the rear panel as I assumed (foolishly) that an external

Hii all, the PSU is now ok. After adjusting the DIP Switches the SA is starting and I can see the 100 MHz signal I injected. But I think the Signal is not locked. Down to 100 kHz ResBW the signal is

In the 22xx scope's power supply the 8.6V rail acts as a reference for all other voltages, so if 8.6V is low, all other rails will also be dragged down.

The possible options are only the ones which are listed in the datasheet! For example the number of sampling points can not be increased in a TDS6xx because of the other sampling technology of the

Yes, color Proc boards are different from monochrome. Thay have additional color video schematics. Regarding 1M and 2M, If we look inside the oscilloscope, we can see which type of memory is being

Yeah, shame about the probe for sure. I had the same schematic up and it seems quite do-able, just a handful of resistors, a cap, and a 6110. I'm not familiar with the plug type so maybe that's

As far as I know, the VGA output provides exactly the same image as on the CRT. So a monochrome scope will output a monochrome image via VGA. As for enabling options, the link provided above by

Speedy reply from VintageTek Museum, unfortunately it's: "We no longer have the volunteers who had the time to look for parts and ship worldwide. Sorry we can’t assist in these kinds of parts

Hey all, I picked up a RM15 (rackmount 515) a few weeks ago and aside from missing most of its tubes it is in impeccable condition. What's peculiar is next to the s/n is a plate that says MOD 801C.