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{{ | {{Instrument Sidebar | ||
|class=Logic Analyzer | |||
image=Tek1241 front.jpg| | |manufacturer=Tektronix | ||
caption=Tektronix 1241 | | |model=1240 | ||
introduced=1984 | | |summary=Modular Logic Analyzer | ||
discontinued=1993 | | |image=Tek1241 front.jpg | ||
|caption=Tektronix 1241 | |||
manuals= | |introduced=1984 (1240), 1986 (1241) | ||
* [[Media:070-4641-00.pdf|1240 quick start guide | |discontinued=1993 | ||
* [[Media:070-4340-01.pdf|1240 and 1241 Operator's manual | |designers= | ||
|manuals= | |||
* [[Media:070-4641-00.pdf|1240 quick start guide]] | |||
* [[Media:070-4340-01.pdf|1240 and 1241 Operator's manual -01]] | |||
* [[Media:070-4340-00.pdf|1240 and 1241 Operator's manual -00]] | |||
* [[Media:070-4342-01.pdf|1240 Service Manual Vol.1]] | * [[Media:070-4342-01.pdf|1240 Service Manual Vol.1]] | ||
* [[Media:070-4717-01.pdf|1240 Service Manual Vol.2]] | * [[Media:070-4717-01.pdf|1240 Service Manual Vol.2]] | ||
* [[Media:070-5378-00.pdf |1241 Service Manual addendum | * [[Media:070-5378-00.pdf|1241 Service Manual addendum]] | ||
* [[ROM images#1240|ROM images]] | * [[ROM images#1240|ROM images]] | ||
}} | }} | ||
The '''Tektronix 1240''' is a logic analyzer, introduced in 1984. The '''1241''' is the same device but with a color-shutter CRT, it was introduced in 1986. | The '''Tektronix 1240''' is a logic analyzer, introduced in 1984. The '''1241''' is the same device but with a color-shutter CRT, it was introduced in 1986. | ||
| Line 22: | Line 25: | ||
The 1240/41 provides 14 levels of triggering with conditional branching. | The 1240/41 provides 14 levels of triggering with conditional branching. | ||
There are two cartridge interfaces. | There are two cartridge interfaces. | ||
The rear slot is for I/O devices; three were produced. The [[1200C01]] is the RS232C Comm pack. The [[1200C02]] is the GPIB comm pack. The [[1200C11]] is the parallel printer comm pack. It required the [[12RC01]] Printer Support ROM pack. | |||
The cartridge slot interface on the side of the instrument was memory specific and was for ROM and RAM packs. Both 8K and 64K RAM packs with battery backup were made, note that the battery is a potential HazMat made by Catalyst Research and may destroy the cartridge when it leaks. There were also ROM packs (12RMXX series) that allow for mnemonic disassembly and state analysis of most microprocessors of the time. The ROM packs were made with a generic PCB that had two socketed ROMs and jumpers to select the size. | |||
See the [[Microprocessor support table]] for processor configuration options. | See the [[Microprocessor support table]] for processor configuration options. | ||
There is a design for a multipurpose RAM/ROM pack, called SuperPack by Pavel Korensky | There is a design for a multipurpose RAM/ROM pack, called [[Making_1200_series_cartridges|SuperPack]] by Pavel Korensky. Note the errata in the [[Media:Tek1240-SPDesign10.ZIP|README file]]. | ||
It uses either [[P6460]] or [[P6462]] 9-channel probes | It uses either [[P6460]] (general purpose) or [[P6462]] (TTL) 9-channel probes. | ||
==Internals== | ==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 [[Zilog | 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 [[Zilog Z-80]]A 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. | 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. | Boards are two to six layers. | ||
The CPU board has battery backed up RAM to save the current configuration and one user | The CPU board has battery backed up RAM to save the current configuration and one user configuration. | ||
This battery is a lithium iodide cell. It will eventually fail and leak, damaging the PCB. | |||
The battery is visible on the picture for the A09 processor board. | |||
==See Also== | |||
* [[Time Stamp]] | |||
==Links== | ==Links== | ||
| Line 42: | Line 57: | ||
* [https://www.youtube.com/watch?v=wKR-EUWTZDc Video] showing basic operation | * [https://www.youtube.com/watch?v=wKR-EUWTZDc Video] showing basic operation | ||
* [https://www.youtube.com/watch?v=jq-5DeFpxUM Video] showing GPIB implementation | * [https://www.youtube.com/watch?v=jq-5DeFpxUM Video] showing GPIB implementation | ||
* [http://spurtikus.de/2016/03/30/der-logik-analysator-tektronix-1241/ Teardown of a 1241] nice pictures, but the site is in German. | |||
== Pictures == | == Pictures == | ||
| Line 82: | Line 98: | ||
Tek 1241 state view.jpg | 1241 State Table View | Tek 1241 state view.jpg | 1241 State Table View | ||
1240D1.jpg | 1240D1 | 1240D1.jpg | 1240D1 | ||
1240D2.jpg | 1240D2 | |||
Tek 1240 accessory 1.jpg | | |||
Tek 1240 accessory 2.jpg | | |||
Tek 1240 accessory 3.jpg | | |||
Tek 1240 accessory 4.jpg | | |||
Tek 1240 accessory 5.jpg | | |||
</gallery> | </gallery> | ||
[[Category:Logic | {{Plugins|1240}} | ||
[[Category:Logic analyzers]] | |||
[[Category:Introduced in 1984]] | |||
[[Category:Parallel printer interface]] | |||
[[Category:RS-232 interface]] | |||
[[Category:GPIB interface]] | |||