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545: Difference between revisions
Shorting the vertical amp burns out the termination resistors not the delay line. Mod Kit 040-227 for early production,
(Bob Shand did mechanical design on the 540B series) |
Vintage dave (talk | contribs) (Shorting the vertical amp burns out the termination resistors not the delay line. Mod Kit 040-227 for early production,) |
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The 545 uses the [[154-098]] CRT. With the limited CRT technology available at the time, the higher bandwidth of the 541 and 545 came with a tradeoff. | The 545 uses the [[154-098]] CRT. With the limited CRT technology available at the time, the higher bandwidth of the 541 and 545 came with a tradeoff. | ||
The vertical scale is only 4 divisions, 2 above and 2 below the graticule center line. The lower bandwidth 531/[[Type 533|533]]/535 retained the 6 vertical divisions, as used in most other Tektronix scopes. | The vertical scale is only 4 divisions, 2 above and 2 below the graticule center line. The lower bandwidth 531/[[Type 533|533]]/535 retained the 6 vertical divisions, as used in most other Tektronix scopes. | ||
Shorting the outputs of the vertical amplifier to ground can cause expensive damage by burning out the termination resistor network. | |||
Shorting the outputs of the vertical amplifier to ground can cause | Starting at Type 545A serial number 29960, there is a 150 mA fuse, F1054, to prevent that failure. This change was made available for instruments already built, in Modification Kit 040-227. | ||
=== 545B Vertical Path === | === 545B Vertical Path === | ||