1240: Difference between revisions
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{{Oscilloscope Sidebar| | {{Oscilloscope Sidebar| | ||
title=Tektronix 1240| | title=Tektronix 1240| | ||
image= | image=Tek1241 front.jpg| | ||
caption=Tektronix | caption=Tektronix 1241 | | ||
introduced=1983 | | introduced=1983 | | ||
discontinued=(?) | | discontinued=(?) | | ||
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Tektronix_1240_front_panel.jpeg | Tektronix 1240, front view | Tektronix_1240_front_panel.jpeg | Tektronix 1240, front view | ||
Tektronix_1240_rear_panel.jpeg | Rear panel (note second power switch) | Tektronix_1240_rear_panel.jpeg | Rear panel (note second power switch) | ||
Tek1241 front.jpg | Tektronix 1241 display | |||
Tek 1241 front.jpg | Tektronix 1241, front view | Tek 1241 front.jpg | Tektronix 1241, front view | ||
Tek 1241 rear.jpg | Tektronix 1241, rear view | Tek 1241 rear.jpg | Tektronix 1241, rear view | ||
Revision as of 22:26, 11 April 2018
The Tektronix 1240 is a logic analyzer. The 1241 is the same device but with a color-shutter CRT.
Specifications
The 1240/1241 accommodate one to four acquisition boards of type 1240D1 with 9 channels or 1240D2 with 18 channels for a total of up to 72 acquisition channels. Acquisition speeds reach up to 100 MHz asynchronous or 50 MHz synchronous. The 1240/41 provides 14 levels of triggering with conditional branching.
Exchangeable ROM cartridges allow for mnemonic disassembly and state analysis of most microprocessors of the time.
An optional "Comm Pack" provides a serial port including remote control capabilities.
Internals
The 1240 is built around an Intel 8088 as the control processor with 64K DRAM, and firmware in a bank of EPROMs. A separate I/O processor board is powered by a Z80A CPU. The display controller is built from individual TTL and ECL ICs.
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.
Boards are two to six layers.
Links
- Tektronix 1240 / 1241 / 1240D2 @ barrytech.com
- Video showing basic operation
- Video showing GPIB implementation
Pictures
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Tektronix 1240, front view
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Rear panel (note second power switch)
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Tektronix 1241 display
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Tektronix 1241, front view
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Tektronix 1241, rear view
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Side with probe panel
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1240 self test display
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1240 state table view
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1240 timing diagram view
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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 1240D1 9-channel board
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A15 1240D1 9-channel board (rear side)
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1241 State Table View
