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summary=1 MHz dual beam differential scope | | summary=1 MHz dual beam differential scope | | ||
image=Tek_502_front.jpg | | image=Tek_502_front.jpg | | ||
caption=Tek 502 front | | caption=Tek 502 front (with Single Sweep Mod 104)| | ||
introduced=1958 | | introduced=1958 | | ||
discontinued=1973 | | discontinued=1973 | | ||
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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. | |||
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. | ||
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There is no post-deflection acceleration. | There is no post-deflection acceleration. | ||
The CRT cathode voltage is −2900 V. | The CRT cathode voltage is −2900 V. | ||
Later 502A have solid state (include nuvistor) input stage, | Later 502A have solid state (include nuvistor) input stage, | ||
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===502=== | ===502=== | ||
<gallery> | <gallery> | ||
Tek 502 front fl2.jpg | Tek 502 front fl2.jpg | 502 without Mod 104, front | ||
Tek 502 front fl.jpg | Tek 502 front fl.jpg | 502 with Mod 104 (single sweep), front | ||
Tek_502_front.jpg|502 front view | Tek_502_front.jpg|502 front view | ||
Tek_502.jpg | Image magnified from a flyer | Tek_502.jpg | Image magnified from a flyer |