Mod on horizontal plug-in 7B80
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On Sun, Dec 9, 2018 at 04:17 AM, Gary Robert Bosworth wrote:
This is a tough one. I have a Tek Plug-In number 7B80. It is mod GB. I see noIt should be quite obvious if compared to an unmodified 7B80. This is what the mod manual insert says: // 7B80 MOD GB This manual insert describes MOD GB as it applies to the Tektronix Time Base plug-in unit. MOD GB increases X2 the horizontal preamplifier gain to extend the top sweep rate to 5 ns/div and to 0.5 ns/div, magnified. Rates slower than 10 us/div have been deleted, limiting the TIME/DIV switch to 11 positions and the front-panel HOLDOFF control has been deleted, and internal circuits wired to provide minimum holdoff for all ranges. // /H?kan |
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Thank you H?kan. I am so happy to see vital information. I wanted to know
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the extent of the modifications. I do still wonder why Tektronix made the Modification. I am happy to have extended horizontal sweep which can be used in my 7104. Perhaps they did it as a special Mod for one particular customer. There is only slight cost reduction in the manufacture, since the slower sweep rates have been eliminated. If anyone knows of more "inside" information about the rationale, please fill me in. Gary On Sun, Dec 9, 2018 at 2:08 AM zenith5106 <hahi@...> wrote:
On Sun, Dec 9, 2018 at 04:17 AM, Gary Robert Bosworth wrote:This is a tough one. I have a Tek Plug-In number 7B80. It is mod GB. Isee nomention of this modification in the manuals.It should be quite obvious if compared to an unmodified 7B80. --
Gary Robert Bosworth grbosworth@... Tel: 310-317-2247 |
Gary Robert Bosworth
zenith5106