502: Difference between revisions
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The '''Tektronix 502''' is a dual-beam oscilloscope [[introduced in 1958]], followed by the 502A in 1963. | The '''Tektronix 502''' is a dual-beam oscilloscope [[introduced in 1958]], followed by the 502A in 1963. | ||
There is also a rack-mount model, the RM502A | There is also a rack-mount model, the RM502A. | ||
Both beams have differential inputs. The horizontal deflection plates are common to both beams. | Both beams have differential inputs. The horizontal deflection plates are common to both beams. | ||
Mod 104 on a 502 provides single sweep lockout. | Mod 104 on a 502 provides single sweep lockout. This feature is standard on the 502A, which also has beam finder switches for each channel. | ||
A recessed switch in the left side panel allows the upper beam amplifier to be connected to the horizontal deflection plates for single-beam X-Y operation, providing a differential X input with the same sensitivity as the Y channel. The upper beam is positioned off screen in this mode. | A recessed switch in the left side panel allows the upper beam amplifier to be connected to the horizontal deflection plates for single-beam X-Y operation, providing a differential X input with the same sensitivity as the Y channel. The upper beam is positioned off screen in this mode. | ||