1240: Difference between revisions
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* [http://w140.com/070-4342-01_1240svcVol1_Jan87.pdf 1240 Service Manual Vol.1] | * [http://w140.com/070-4342-01_1240svcVol1_Jan87.pdf 1240 Service Manual Vol.1] | ||
* [http://w140.com/070-4717-01_1240svcVol2_Oct88.pdf 1240 Service Manual Vol.2] | * [http://w140.com/070-4717-01_1240svcVol2_Oct88.pdf 1240 Service Manual Vol.2] | ||
* [http://w140.com/tek_1241_service.pdf 1241 Service Manual (PDF)] | |||
* [[ROM images#1240|ROM images]] | * [[ROM images#1240|ROM images]] | ||
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Revision as of 09:26, 1 July 2017
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
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, 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)
