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| Tektronix 2247a 100mhz scope not working right on times/div |
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| powerstroke7.3:
--- Quote from: tggzzz on September 03, 2022, 07:12:07 pm --- --- Quote from: powerstroke7.3 on September 03, 2022, 06:20:13 pm --- --- Quote from: tggzzz on September 02, 2022, 07:45:42 am --- --- Quote from: powerstroke7.3 on September 02, 2022, 06:47:14 am --- --- Quote from: tautech on September 01, 2022, 08:08:08 pm --- --- Quote from: powerstroke7.3 on September 01, 2022, 07:55:31 pm ---yeah i have the service manual. I swear these era of scopes are more complicated than newer ones --- End quote --- Granted, 100 milli Hertz scopes are certainly a rarity. --- End quote --- all i see for sale are similar ones or even older 3 digit model #s --- End quote --- No, you see 100 mega Hertz (MHz) scopes for sale. In a similar vein, synthesised oscillators often have specs like 50MHz range with 100mHz resolution. BTW, please don't make the mistake of measuring time in units of conductance, i.e. Siemens (S) vs seconds (s). But back to your point. I'm not familiar with the 22xx scopes, you'll need to RTFM. However, the 24xx scopes have a cal out signal where the frequency changes with the timebase so there are 5(?) cycles visible on the display. Nobody thinks that misfeature was a good idea. --- End quote --- you went right over my head there. I'm just a dumb ham operator with a extra license. Seriously though I don't understand a bit of what you said. I'm not very advanced at all with any this. --- End quote --- My first two paragraphs are stuff I learned in school physics lessons, several years before I went to university. https://studyrocket.co.uk/revision/a-level-physics-aqa/measurements-their-errors/use-of-si-units-their-prefixes (S Siemens conductance a.k.a. inverse resistance, mhos is another derived unit, less commonly used than the ones mentioned in that link. A FET's principal parameter is its transconductance gm, in the same way as a BJT's have current gain hfe. The last paragraph is specific to a range of scopes. RTFM for more information. If you don't have the FM, get it at https://w140.com/tekwiki/wiki/2247 --- End quote --- you might as well be talking Greek to me. Thanks though, I think. |
| tautech:
--- Quote from: powerstroke7.3 on September 03, 2022, 10:35:33 pm ---you might as well be talking Greek to me. Thanks though, I think. --- End quote --- Very simply in English as you don't understand Greek......FFS get you multipliers correct as this is an engineering forum. ;) |
| tggzzz:
--- Quote from: powerstroke7.3 on September 03, 2022, 10:35:33 pm --- --- Quote from: tggzzz on September 03, 2022, 07:12:07 pm --- --- Quote from: powerstroke7.3 on September 03, 2022, 06:20:13 pm --- --- Quote from: tggzzz on September 02, 2022, 07:45:42 am --- --- Quote from: powerstroke7.3 on September 02, 2022, 06:47:14 am --- --- Quote from: tautech on September 01, 2022, 08:08:08 pm --- --- Quote from: powerstroke7.3 on September 01, 2022, 07:55:31 pm ---yeah i have the service manual. I swear these era of scopes are more complicated than newer ones --- End quote --- Granted, 100 milli Hertz scopes are certainly a rarity. --- End quote --- all i see for sale are similar ones or even older 3 digit model #s --- End quote --- No, you see 100 mega Hertz (MHz) scopes for sale. In a similar vein, synthesised oscillators often have specs like 50MHz range with 100mHz resolution. BTW, please don't make the mistake of measuring time in units of conductance, i.e. Siemens (S) vs seconds (s). But back to your point. I'm not familiar with the 22xx scopes, you'll need to RTFM. However, the 24xx scopes have a cal out signal where the frequency changes with the timebase so there are 5(?) cycles visible on the display. Nobody thinks that misfeature was a good idea. --- End quote --- you went right over my head there. I'm just a dumb ham operator with a extra license. Seriously though I don't understand a bit of what you said. I'm not very advanced at all with any this. --- End quote --- My first two paragraphs are stuff I learned in school physics lessons, several years before I went to university. https://studyrocket.co.uk/revision/a-level-physics-aqa/measurements-their-errors/use-of-si-units-their-prefixes (S Siemens conductance a.k.a. inverse resistance, mhos is another derived unit, less commonly used than the ones mentioned in that link. A FET's principal parameter is its transconductance gm, in the same way as a BJT's have current gain hfe. The last paragraph is specific to a range of scopes. RTFM for more information. If you don't have the FM, get it at https://w140.com/tekwiki/wiki/2247 --- End quote --- you might as well be talking Greek to me. Thanks though, I think. --- End quote --- I'm beginning to wonder if you see the difference between 0.001 and 1,000,000. I'm beginning to wonder if you can follow a link and understand the schoolchild level stuff it contains. (A-level physics is for 16-18yo kids) I'm beginning to wonder if you have heard of a wonderful new tool at google.com |
| powerstroke7.3:
--- Quote from: tggzzz on September 04, 2022, 12:04:10 am --- --- Quote from: powerstroke7.3 on September 03, 2022, 10:35:33 pm --- --- Quote from: tggzzz on September 03, 2022, 07:12:07 pm --- --- Quote from: powerstroke7.3 on September 03, 2022, 06:20:13 pm --- --- Quote from: tggzzz on September 02, 2022, 07:45:42 am --- --- Quote from: powerstroke7.3 on September 02, 2022, 06:47:14 am --- --- Quote from: tautech on September 01, 2022, 08:08:08 pm --- --- Quote from: powerstroke7.3 on September 01, 2022, 07:55:31 pm ---yeah i have the service manual. I swear these era of scopes are more complicated than newer ones --- End quote --- Granted, 100 milli Hertz scopes are certainly a rarity. --- End quote --- all i see for sale are similar ones or even older 3 digit model #s --- End quote --- No, you see 100 mega Hertz (MHz) scopes for sale. In a similar vein, synthesised oscillators often have specs like 50MHz range with 100mHz resolution. BTW, please don't make the mistake of measuring time in units of conductance, i.e. Siemens (S) vs seconds (s). But back to your point. I'm not familiar with the 22xx scopes, you'll need to RTFM. However, the 24xx scopes have a cal out signal where the frequency changes with the timebase so there are 5(?) cycles visible on the display. Nobody thinks that misfeature was a good idea. --- End quote --- you went right over my head there. I'm just a dumb ham operator with a extra license. Seriously though I don't understand a bit of what you said. I'm not very advanced at all with any this. --- End quote --- My first two paragraphs are stuff I learned in school physics lessons, several years before I went to university. https://studyrocket.co.uk/revision/a-level-physics-aqa/measurements-their-errors/use-of-si-units-their-prefixes (S Siemens conductance a.k.a. inverse resistance, mhos is another derived unit, less commonly used than the ones mentioned in that link. A FET's principal parameter is its transconductance gm, in the same way as a BJT's have current gain hfe. The last paragraph is specific to a range of scopes. RTFM for more information. If you don't have the FM, get it at https://w140.com/tekwiki/wiki/2247 --- End quote --- you might as well be talking Greek to me. Thanks though, I think. --- End quote --- I'm beginning to wonder if you see the difference between 0.001 and 1,000,000. I'm beginning to wonder if you can follow a link and understand the schoolchild level stuff it contains. (A-level physics is for 16-18yo kids) I'm beginning to wonder if you have heard of a wonderful new tool at google.com --- End quote --- dont you have someone else to bother? Excuse me for not capitalizing the m in mega Hertz. You knew what I meant. Now move along. Do someone else a favor not me. I don't need your help unless you know something about the scope. |
| tggzzz:
--- Quote from: powerstroke7.3 on September 04, 2022, 10:46:31 am --- --- Quote from: tggzzz on September 04, 2022, 12:04:10 am --- --- Quote from: powerstroke7.3 on September 03, 2022, 10:35:33 pm --- --- Quote from: tggzzz on September 03, 2022, 07:12:07 pm --- --- Quote from: powerstroke7.3 on September 03, 2022, 06:20:13 pm --- --- Quote from: tggzzz on September 02, 2022, 07:45:42 am --- --- Quote from: powerstroke7.3 on September 02, 2022, 06:47:14 am --- --- Quote from: tautech on September 01, 2022, 08:08:08 pm --- --- Quote from: powerstroke7.3 on September 01, 2022, 07:55:31 pm ---yeah i have the service manual. I swear these era of scopes are more complicated than newer ones --- End quote --- Granted, 100 milli Hertz scopes are certainly a rarity. --- End quote --- all i see for sale are similar ones or even older 3 digit model #s --- End quote --- No, you see 100 mega Hertz (MHz) scopes for sale. In a similar vein, synthesised oscillators often have specs like 50MHz range with 100mHz resolution. BTW, please don't make the mistake of measuring time in units of conductance, i.e. Siemens (S) vs seconds (s). But back to your point. I'm not familiar with the 22xx scopes, you'll need to RTFM. However, the 24xx scopes have a cal out signal where the frequency changes with the timebase so there are 5(?) cycles visible on the display. Nobody thinks that misfeature was a good idea. --- End quote --- you went right over my head there. I'm just a dumb ham operator with a extra license. Seriously though I don't understand a bit of what you said. I'm not very advanced at all with any this. --- End quote --- My first two paragraphs are stuff I learned in school physics lessons, several years before I went to university. https://studyrocket.co.uk/revision/a-level-physics-aqa/measurements-their-errors/use-of-si-units-their-prefixes (S Siemens conductance a.k.a. inverse resistance, mhos is another derived unit, less commonly used than the ones mentioned in that link. A FET's principal parameter is its transconductance gm, in the same way as a BJT's have current gain hfe. The last paragraph is specific to a range of scopes. RTFM for more information. If you don't have the FM, get it at https://w140.com/tekwiki/wiki/2247 --- End quote --- you might as well be talking Greek to me. Thanks though, I think. --- End quote --- I'm beginning to wonder if you see the difference between 0.001 and 1,000,000. I'm beginning to wonder if you can follow a link and understand the schoolchild level stuff it contains. (A-level physics is for 16-18yo kids) I'm beginning to wonder if you have heard of a wonderful new tool at google.com --- End quote --- dont you have someone else to bother? Excuse me for not capitalizing the m in mega Hertz. You knew what I meant. Now move along. Do someone else a favor not me. I don't need your help unless you know something about the scope. --- End quote --- I refer you to someone else's post: https://www.eevblog.com/forum/testgear/tektronix-2247a-100mhz-scope-not-working-right-on-timesdiv/msg4397824/#msg4397824 Do you actually want help or to be spoonfed? I refer you to the last paragraph of this post: https://www.eevblog.com/forum/testgear/tektronix-2247a-100mhz-scope-not-working-right-on-timesdiv/msg4397467/#msg4397467 |
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