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Re: Asking for Help with Verifying Genuineness of 2465B from Ebay
Trace rotation can change if you bang the scope around....
But more likely is that "calibrated and tested" means that
it was calibrated and tested at some point in its life.
I would expect an A to
Trace rotation can change if you bang the scope around....
But more likely is that "calibrated and tested" means that
it was calibrated and tested at some point in its life.
I would expect an A to
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By
Chuck Harris
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#175212
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Re: How much does 106 of Peter Keller's CRT books weigh?
Dennis-
I have done similar and See, no good deed goes unpunished.
Do enjoy the journey...you were able too see and old friend.
You are greatly appreciated for all you do.
May you and your family have
Dennis-
I have done similar and See, no good deed goes unpunished.
Do enjoy the journey...you were able too see and old friend.
You are greatly appreciated for all you do.
May you and your family have
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By
Renée
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#175211
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Re: How much does 106 of Peter Keller's CRT books weigh?
C'mon Dennis, I'd love to have my book soon but please wait until things won't be as busy! You may have to wait half a day until it's your turn, only to be sent away because they're too
C'mon Dennis, I'd love to have my book soon but please wait until things won't be as busy! You may have to wait half a day until it's your turn, only to be sent away because they're too
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By
Raymond Domp Frank
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#175210
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How much does 106 of Peter Keller's CRT books weigh?
My original idea if I got orders for 10 to 15 of Peter Keller's CRT books
was to have him ship them to me and I would mail them out to the individuals
who ordered them.
(Please feel free to form a
My original idea if I got orders for 10 to 15 of Peter Keller's CRT books
was to have him ship them to me and I would mail them out to the individuals
who ordered them.
(Please feel free to form a
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By
Dennis Tillman W7pF
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#175209
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Re: Asking for Help with Verifying Genuineness of 2465B from Ebay
Any of the above (whether 350 or 400) should be better than my 300 MHz 2465 that has a rise time measured at 0.91 nsec.
Any of the above (whether 350 or 400) should be better than my 300 MHz 2465 that has a rise time measured at 0.91 nsec.
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By
TomC
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#175208
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Re: Thoughts About Modern Tek Scopes
two things that you'll lose over the chinese scopes that you mentioned are size/weight and record length. These TDS5000 series are pretty bulky and "loud" (like TDS7000 I assume) and the record length
two things that you'll lose over the chinese scopes that you mentioned are size/weight and record length. These TDS5000 series are pretty bulky and "loud" (like TDS7000 I assume) and the record length
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By
amirb
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#175207
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Re: Thoughts About Modern Tek Scopes
I won't comment, for fear of price increases
Price just came back down, unless a PSU issue.
Raymond
I won't comment, for fear of price increases
Price just came back down, unless a PSU issue.
Raymond
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By
Raymond Domp Frank
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#175206
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Re: Thoughts About Modern Tek Scopes
A lot can happen in 6 days on Ebay. My guess is it won't go for less than 1000.00USD... which is a lot more than a Chinese manufactured oscilloscope, sold by a Chinese company.
A lot can happen in 6 days on Ebay. My guess is it won't go for less than 1000.00USD... which is a lot more than a Chinese manufactured oscilloscope, sold by a Chinese company.
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By
Roy Thistle
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#175205
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Re: Thoughts About Modern Tek Scopes
I second that but did he post a link? i dont think so. He has a good and valid question
I second that but did he post a link? i dont think so. He has a good and valid question
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By
amirb
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#175204
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Re: SUCCESS! The "sick" 475A is now the "fixed" 475A!
Jeff,
Just some thoughts from looking at the schematics:
Can you verify the effect of X-Y Time/Div setting on the emitter of Q1338? The entire circuitry around Q1338: wasn't your original issue with
Jeff,
Just some thoughts from looking at the schematics:
Can you verify the effect of X-Y Time/Div setting on the emitter of Q1338? The entire circuitry around Q1338: wasn't your original issue with
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By
Dave Peterson
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#175203
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Re: Thoughts About Modern Tek Scopes
I not saying someone can't, or shouldn't ... but, I wish people wouldn't post links to Tek stuff for sale on Ebay... it probably causes someone I'd like to pay more... and someone I wouldn't like to
I not saying someone can't, or shouldn't ... but, I wish people wouldn't post links to Tek stuff for sale on Ebay... it probably causes someone I'd like to pay more... and someone I wouldn't like to
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By
Roy Thistle
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#175202
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Re: Asking for Help with Verifying Genuineness of 2465B from Ebay
I love this! As has been written before, "calibrating" in its pure sense means nothing more than comparing against something considered a standard. Without specifying the results, i.e. deviations, it
I love this! As has been written before, "calibrating" in its pure sense means nothing more than comparing against something considered a standard. Without specifying the results, i.e. deviations, it
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By
Raymond Domp Frank
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#175201
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Re: Asking for Help with Verifying Genuineness of 2465B from Ebay
I've found the automatic parametric tests in this family inaccurate and varying in their results.
Of course, rise time measured depends on overshoot. Accepting 3% - 5% overshoot during rise time
I've found the automatic parametric tests in this family inaccurate and varying in their results.
Of course, rise time measured depends on overshoot. Accepting 3% - 5% overshoot during rise time
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By
Raymond Domp Frank
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#175200
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Re: Asking for Help with Verifying Genuineness of 2465B from Ebay
Jeff,
That's very interesting, I had no idea that the local magnetic field would have such an impact. But that completely makes sense why its an operator control. Thanks for that info.
I will say
Jeff,
That's very interesting, I had no idea that the local magnetic field would have such an impact. But that completely makes sense why its an operator control. Thanks for that info.
I will say
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By
Mr. Eric
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#175199
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Re: Asking for Help with Verifying Genuineness of 2465B from Ebay
Gravity is a factor. Placing it vertically/horizontally makes a difference. Magnetism would be a very important factor were it not for the mu-metal shield around the CRT. Whether it deserves to be
Gravity is a factor. Placing it vertically/horizontally makes a difference. Magnetism would be a very important factor were it not for the mu-metal shield around the CRT. Whether it deserves to be
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By
Raymond Domp Frank
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#175198
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Re: Asking for Help with Verifying Genuineness of 2465B from Ebay
Using Leo Bodnar's pulse generator, my 2465 (no A or B) measures 0.91 nsec. So there seems to be something not right with your 2465A. It should be better than my 2465. And your 2467 should certainly
Using Leo Bodnar's pulse generator, my 2465 (no A or B) measures 0.91 nsec. So there seems to be something not right with your 2465A. It should be better than my 2465. And your 2467 should certainly
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By
TomC
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#175197
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Re: Asking for Help with Verifying Genuineness of 2465B from Ebay
To Jeff: The TEK CRTs have a fine MuMetal CoNetic shield and are NOT affected by earht or other ext mag fiedls of normal gauss level.
To Eric: >>trace rotation was wayyyy off and the geometry
To Jeff: The TEK CRTs have a fine MuMetal CoNetic shield and are NOT affected by earht or other ext mag fiedls of normal gauss level.
To Eric: >>trace rotation was wayyyy off and the geometry
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By
Jean-Paul
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#175196
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Re: TEK176 fixing a shorted wet tatalum capacitor
The 546A used a tiny current transformer (shaped and shielded to be z-axis directed?)
This Bee thing... They claim to be using a Honeywell Z-axis anisotropic magnetostritive sensor (not a coil based
The 546A used a tiny current transformer (shaped and shielded to be z-axis directed?)
This Bee thing... They claim to be using a Honeywell Z-axis anisotropic magnetostritive sensor (not a coil based
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By
Roy Thistle
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#175195
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Re: Asking for Help with Verifying Genuineness of 2465B from Ebay
Eric wrote:
My impression (please correct me if I'm wrong) is that trace rotation is a correction for the local magnetic field, which is why it is an operator control. If the scope was calibrated (or
Eric wrote:
My impression (please correct me if I'm wrong) is that trace rotation is a correction for the local magnetic field, which is why it is an operator control. If the scope was calibrated (or
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By
Jeff Dutky
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#175194
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Re: TEK176 fixing a shorted wet tatalum capacitor
"The wet hermetic variety, if it even existed then..." Regarding the existence and use of "hermetically sealed, wet tantalum capacitors...I suppose if one contextualizes the discussion in terms of
"The wet hermetic variety, if it even existed then..." Regarding the existence and use of "hermetically sealed, wet tantalum capacitors...I suppose if one contextualizes the discussion in terms of
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By
Roy Thistle
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#175193
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