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Tubetechie105
Member
Joined: 29 Jul 2009
Posts: 74
Location: Kennesaw Gerogia
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| Posted: Nov Sat 07, 2009 8:53 pm |
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I recently bought a Tek 545 Scope and I have 3 things I need to ask:
1) do I need to test the resistors and recap the whole machine?
2) what plug-ins do I need?/ can I use with the machine? and
3) since the tek 570 is almost nonexistent how can I make the meter run Transconductance curves? |
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Dean Huster
Member
Joined: 01 Jan 1970
Posts: 2306
Location: Harviell MO USA 63945 (12 miles S of Poplar Bluff)
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| Posted: Nov Sat 07, 2009 9:38 pm |
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1) I'd certainly check all the E-caps and probably replace them if the 545 has been dormant for a long time. Don't worry about resistors unless you find that it won't pass a calibration check.
2) The 545 will work with any letter- or 1-series plug-in. The CA was the most-popular dual-trace plug-in while the L is a great single-trace unit. A 1A2 is another good and newer dual-trace plug-in.
3) I don't understand this question at all.
_________________
Dean, Electronics Curmudgeon
Contributing editor emeritus of the "Q&A" column in Poptronics magazine, R.I.P. |
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Alan Douglas
Member
Joined: 01 Jan 1970
Posts: 14979
Location: Pocasset, Cape Cod, MA
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| Posted: Nov Sat 07, 2009 10:01 pm |
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| You can use the scope (or any scope) as the display for a curve tracer, but it takes extra equipment. See pages 17 to 19 of my test-gear book for a couple of possibilities. |
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Burnt Fingers
Member
Joined: 20 Oct 2007
Posts: 5173
Location: New Hampshire
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| Posted: Nov Sat 07, 2009 11:45 pm |
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Whats your view on the Tek 575 and TV-7 marriage in ER Magazine Alan? I have a 575 with Mod 122C.
Carl |
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Cdoose
Member
Joined: 01 Jan 1970
Posts: 765
Location: Hinsdale, IL, USA
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| Posted: Nov Sun 08, 2009 2:20 pm |
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| Burnt Fingers wrote: | Whats your view on the Tek 575 and TV-7 marriage in ER Magazine Alan? I have a 575 with Mod 122C.
Carl |
Carl,
Could you tell me which issue ER has the curve tracer article please? I guess with a 575 you have to design an amp for the step voltage since stock it's limited to 0.2V/step? Also the stock collector supply is limited to 200V. What are the voltage and current limits with the Mod 122C?
Thanks,
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Chuck D. KB9UMF |
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Alan Douglas
Member
Joined: 01 Jan 1970
Posts: 14979
Location: Pocasset, Cape Cod, MA
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| Posted: Nov Sun 08, 2009 3:55 pm |
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ERs are stacked up here but I don't recall which one had that article.
The 122C goes to 400V, and 10V worth of steps. |
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