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545: Difference between revisions
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Type 545 was [[introduced in 1955|introduced February 7th, 1955]] along with the Type [[541]], and superseded in 1959 by the Type 545A, which was in turn superseded in 1964 by the Type 545B, which was produced until 1973. | Type 545 was [[introduced in 1955|introduced February 7th, 1955]] along with the Type [[541]], and superseded in 1959 by the Type 545A, which was in turn superseded in 1964 by the Type 545B, which was produced until 1973. | ||
The difference between the 545A and 545 is the control ergonomics, not any major circuit design changes. | |||
The difference between the 545A and 545 is the control ergonomics, not any major circuit design changes. | |||
The main improvement was to replace a pair of switches for the time base (8-position Time/Div and 6-position multiplier) | |||
with a single 24-position switch, freeing up front panel space for a Time Base B Trigger Mode rotary switch. | |||
Additionally, the delaying timebase on the 545A supports delays up to 10 seconds while the 545 supports delays only up to 100 milliseconds. | |||
The older 545 uses the [[T54|T54 / 5BHP2]] CRT, P2 [[phosphor]] was standard. | The older 545 uses the [[T54|T54 / 5BHP2]] CRT, P2 [[phosphor]] was standard. | ||