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453: Difference between revisions
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screen dimensions are X*Y cm not cm-squared
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Vintage dave (talk | contribs) (screen dimensions are X*Y cm not cm-squared) |
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The 453 is almost entirely solid-state, even in its first version, except for the [[5642]] HV rectifiers and CRT. | The 453 is almost entirely solid-state, even in its first version, except for the [[5642]] HV rectifiers and CRT. | ||
Early 453's (below serial number 20,000) used six [[8393]] Nuvistor triode tubes (two of them paired). | Early 453's (below serial number 20,000) used six [[8393]] Nuvistor triode tubes (two of them paired). | ||
The 453A, [[introduced in 1971]], was fully transistorized, with extended bandwidth to 60 MHz, increased the graticule from | The 453A, [[introduced in 1971]], was fully transistorized, with extended bandwidth to 60 MHz, increased the graticule from 6 × 10 cm to 8 × 10 cm, and introduced a mixed-sweep mode. | ||
Mixed-sweep mode starts the sweep at the "A" time/div rate and then, after a delay set by a ten-turn vernier dial, continues at the "B" sweep time/div rate. | Mixed-sweep mode starts the sweep at the "A" time/div rate and then, after a delay set by a ten-turn vernier dial, continues at the "B" sweep time/div rate. | ||