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Todd, Go to ftp://bama.sbc.edu/downloads/tek/464/ Download the manual. If you don't have the viewer, Go to Lizardtech. Check the power supply voltages. Look in the manual for troubleshooting

I think their frequency response is somewhat limited (kHz), and of course they are nonlinear and lack sensitivity at the beginning of the travel, but otherwise they are great. I keep several for

iron vane meters are still being manufactured for panel meter applications. "simpson electric and other manufactures" they are genuine true rms responding. a simpson 260 multimeter is not true rms

Hi Arthur, It isn't really what I believe that counts here. I was just repeating what Tektronix has written in the service manual for 555 required equipment. I think they specify an Iron vane movement

check to see if it will work in x/y mode "don t burn the tube"

Well, To make a long story short, I"ve been trying to get a newly aquired 464 up and running which now has no sweep. I recieved the scope last month and seemed to function perfectly until last week

That's a bit surprising; do you have an operator's manual for it? I'll look around on my shelf and see what I have in the way of 2750-series docs, but I'm not immediately optimistic. 200 Hz. This is

Hello, I have the following Tektronix Catalogs for sale: 1967, 1969, 1970, 1971, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1991, 1993, 1994.

my error sir

Doesn't matter. The 2754 doesn't use the filter as its minimum span/div is 200 Hz (see my below answers to John's questions). Thanks, Eric

wouldnt a shorted pass transistor cause the filter can to be elevated far beyond normal operating temperature?? that might cause more of a fc shift then if the heater was not operating at all. "i used

if the heater is shot in the filter you might be able to carefully unsolder the can seam and fix it. maybe deane kidd has replacement filters. that unit probably has a heated yig too the 7l12 dosent

Hi John, - What, specifically, suggests an unlocked first LO? Are you getting specific error messages during self-calibration, or is it just hanging in a loop? <Eric> The offset displayed during all

Happy new year to you all. After quite a number of positive replies to the issue of 492BP chassis heat, I am satisfied that it is fine. John, thanks. I did see the thermal switch today, it is also 103

protection internally "thermostat" Yes, there's a thermal cutout in series with the line. It calls a halt to the festivities at 103 degrees C. -- john, KE5FX

Agreed, the older ones do feel more robust. The problem is really the weight of the SA itself. If the whole thing isn't secured inside its shipping box, then almost any off-center force can pop the

unless the front cover is captive like on a 2336 scope they often become "lost" if one really wanted to make a replacement maybe it could be done with some hardwood plywood and gasketing material. or

Hi John: I would like to take issue with you about the covers for the 49x analyzers. The original cover has two toggle actuated fingers that fit into the front flange of the instrument and hold the

i wonder if the analyzers have some sort of high temp protection internally "thermostat" alot of underhood automotive electronics is designed to run hot. "it does decrease its mtbf i dont care what

Hi, Gerald -- I just tried waving an IR thermometer around the back of my 494AP after about two hours of operation, and the peak temperature I saw was 58C. Ambient temperature was approx. 27C in the