开云体育

Calibrating a 7704A

Neil Gruending All Messages By This Member #34818 Hi, I was just wondering if a Tek 067-0587-01 calibration fixture is really required to calibrate a 7704A. It is possible to use a calibrated 7A26 and a function generator instead? I realize that a function generator won't have the same kind of rise times, but that's the only difference I can think of. I've never used the fixture so I don't know how well it works but I think that finding a calibrated calibrator is going to cost more than what the scope is worth. Thanks, Neil
Craig Sawyers #34841 I was just wondering if a Tek 067-0587-01 calibration fixture is really required to calibrate a 7704A. It is possible to use a calibrated 7A26 and a function generator instead? The key thing about the cal fixture is that it calibrates the mainframe independent of plug ins. So you adjust horizontal and vertical gains, and trim up the rise time of both vertical and horizontal channels. It probably won't surprise you that I have one, and two of the faster 067-0587-02 too (for 7904/7904A/7104/7912 cal). I certainly would not part with mine - they don't get a whole lot of use, but when you need one it is good to have the right tool to hand. Craig
[email protected] #34847 This reminds me that I need to do a "group cal" on all my gear. I have both fixtures, but I just never get around to it. The individual scopes are all cal'd, but when I start swapping plugins, I sometimes forget what goes where. Maybe when it starts raining... I have been seeing both fixtures fairly regularly, so they shouldn't be too hard to find at a good price (at least in the SF bay area). -Dave toggle quoted message Show quoted text -------------- Original message ---------------------- From: "Craig Sawyers" <c.sawyers@...> I was just wondering if a Tek 067-0587-01 calibration fixture is really required to calibrate a 7704A. It is possible to use a calibrated 7A26 and a function generator instead? The key thing about the cal fixture is that it calibrates the mainframe independent of plug ins. So you adjust horizontal and vertical gains, and trim up the rise time of both vertical and horizontal channels. It probably won't surprise you that I have one, and two of the faster 067-0587-02 too (for 7904/7904A/7104/7912 cal). I certainly would not part with mine - they don't get a whole lot of use, but when you need one it is good to have the right tool to hand. Craig
Neil Gruending All Messages By This Member #34861 Ok, I'm starting to understand a bit better. I'm in the processor of repairing the scope and have been trying to be careful to not turn pots that don't need it. But I'm getting to the point where the vertical amp needs to set properly and it would be nice to also test the horizontal properly. Does the -02 work for slower scopes like the 7704A? If I bought one I might as well get one that can do as many scopes as possible. Does anyone have one for sale or if you live within an hour drive from Sphere here in BC I can borrow it? Thanks, Neil toggle quoted message Show quoted text On Wed, Oct 1, 2008 at 9:31 PM, <d.seiter@...> wrote: This reminds me that I need to do a "group cal" on all my gear. I have both fixtures, but I just never get around to it. The individual scopes are all cal'd, but when I start swapping plugins, I sometimes forget what goes where. Maybe when it starts raining... I have been seeing both fixtures fairly regularly, so they shouldn't be too hard to find at a good price (at least in the SF bay area). -Dave
David C. Partridge #34863 The 067-0587-02 (or -10) version is good far ANY 7000 series 'scope. The -10 version is also good for 113xx and 114xx 'scopes as well (I think). Dave toggle quoted message Show quoted text -----Original Message----- From: TekScopes@... [mailto:TekScopes@...] On Behalf Of Neil Gruending Sent: 02 October 2008 16:00 To: TekScopes@... Subject: Re: [TekScopes] Calibrating a 7704A ... Does the -02 work for slower scopes like the 7704A?
Craig Sawyers #34868 Does the -02 work for slower scopes like the 7704A? If I bought one I might as well get one that can do as many scopes as possible. An -02 will work perfectly with any Tek scope up to 1GHz B/W. With the exception of the 7854, 7612 and 11xxx series with require -10. Craig
zenith5106 Member Profile All Messages By This Member #34869 --- In TekScopes@..., "Craig Sawyers" <c.sawyers@...> wrote: An -02 will work perfectly with any Tek scope up to 1GHz B/W. With the exception of the 7854, 7612 and 11xxx series with require -10. Craig -------- Which is a -02 with only a minor mod. /H?kan
Craig Sawyers #34870 exception of the 7854, 7612 and 11xxx series with require -10. Craig -------- Which is a -02 with only a minor mod. /H???kan Absolutely - and can be retrofitted if necessary on a bit of bodge board. Craig

Previous Topic Next Topic