Oscilloscope - Tek 2465A, HP 54112D Any experience - Page 2 - diyAudio
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Old 25th September 2002, 04:54 PM   #11
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Default i agree with Dice

don't try to economize with inexpensive probes, the inexpensive ones will lead you to mistrust either your scope or your eyes.

the least expensive "new" tek scope is about $1,100 in the US, perhaps a bit less over there in Sweden.

I have had no problems with my Tek7704A, but it takes up a huge amount of room.
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Old 26th September 2002, 09:18 AM   #12
hifiZen is offline hifiZen  Canada
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Beware also that probe BW goes down when you use them in 10x mode... not obvious when the probe is marked "200MHz" or whatnot. So, good probes are a worthwhile investment (not that I've actually followed my own advice on that one! hehe). Of course, if you're measuring tube circuits, the 10x circuit gives you a much larger input voltage range. Also, at higher voltages, differential amplifiers / inputs are nice. I used to have an <i>ancient</i> Tek analog storage scope (model 645?), and it's vertical amp module had differential input which came in handy several times. Apart from it's enormous size and weight, and a severe bandwidth problem, it was a super scope! Actually, I still have it packed away somewhere... I should dig it up.
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