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Using a 7CT1N
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n4buq
I purchased a 7514 which came with, among other plugins, a 7CT1N. After cleaning some of the dirty switches (still need to clean the leaf switches), I'm able to get a set of traces for a 2N3904 and/or 2N3906; however, I'm unclear on exactly how this is to be used in a vertical slot and an associated time-base.
If I understand correctly, when using it in a vertical slot, it's necessary to use a time-base that has an amplifier function, ensure the time-base is actually in amplifier mode, and adjust the amplifier gain to get the desired traces. Is that correct? I ask because I don't exactly find that in the manual. It lists some of the time-bases that are suitable for this but I don't see where it goes into detail on exactly how to configure the time-base. I presume using the time-base in amplifier mode is correct because I get a set of traces that are somewhat comparable to the ones I get when using the tracer in a vertical slot and plugging the cable into an amplifier's input. Thanks, Barry - N4BUQ
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Harvey White
Interleaved:
On 5/16/2022 11:30 AM, n4buq wrote: I purchased a 7514 which came with, among other plugins, a 7CT1N. After cleaning some of the dirty switches (still need to clean the leaf switches), I'm able to get a set of traces for a 2N3904 and/or 2N3906; however, I'm unclear on exactly how this is to be used in a vertical slot and an associated time-base.7CT1N's are quite nice. Yes, correct. You could also put a vertical plugin in a horizontal slot and use it. If in a horizontal slot, you use a vertical plugin. You do need to change the setting to reflect which kind of slot the plugin is in. All you're doing is using the plugin as a feedthrough to the horizontal channels. A vertical plugin (however simple, if it has the right attenuation) will work. Harvey Thanks,
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NigelP
I use a 7B50 for this; it has a BNC external input socket exactly suitable for this mode and interfaces with the waggley connector coming out of the front of the 7CT1N.
Regards Nigel
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n4buq
Okay, that makes sense. Essentially, it's an X-Y type of operation.
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Thanks, Barry - N4BUQ
----- Original Message -----
From: "Harvey White" <madyn@...> Interleaved:
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n4buq
Yes, I was just testing it with a 7B50 and that works. I was foolishly trying this with a time-base without a source input and using the cable inserted into the trigger input. That will produce a set of traces but they're nothing like what they're supposed to be. It then occurred to me why I was getting such odd results...
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Thanks, Barry - N4BUQ
----- Original Message -----
From: "NigelP" <nigel-pritchard@...> I use a 7B50 for this; it has a BNC external input socket exactly suitable for
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Barry,
I use my 7CT1N in a 7633 mainframe with a 7A15AN in the horizontal bay, and a 7M13 in the other vertical bay (to label curves). I found that getting the correct attenuation was easier to do with a vertical amplifier than it was with a time base. I specifically use a 7A15AN so that the display is not cluttered with extraneous readout. -- Jeff Dutky
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n4buq
Jeff,
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I think I like using the 7CT1N with an amplifier plugin as opposed to using the time-base's amplifier function as well. Thanks, Barry - N4BUQ
----- Original Message -----
From: "Jeff Dutky" <jeff.dutky@...> Barry,
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