1240
The Tektronix 1240 is a logic analyzer. The 1241 is the same device but with a color-shutter CRT.
The power supply is a switch-mode supply that mainly generates 5 V at up to 45 A. It requires a minimum load of 11.6 A. Additionally it generates 3 V at up to 8 A with no minimum load and several other voltages that are derived from linear post regulators.
Pictures
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Tektronix 1240, front view
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Rear panel (note second power switch)
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Side with probe panel
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Tek 155-0270-00 probe data interface hybrid (one of three)
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A06 CRT drive board (also includes comms pack interface)
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A06 CRT drive board (rear side)
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A07 Power supply
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A07 Power supply (rear side)
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A07 Power supply low voltage regulators
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A08 Interface board
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A08 Interface board (rear side)
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A09 Control processor board
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A09 Control processor board (rear side)
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A10 I/O processor board
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A10 I/O processor board (rear side)
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A11 Display generator board
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A11 Display generator board (rear side)
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A14 Trigger board
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A14 Trigger board (rear side)
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A15 9 channel board
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A15 9 channel board (rear side)
