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{{Oscilloscope Sidebar|
{{Instrument Sidebar
title=Tektronix 1240|
|class=Logic Analyzer
image=Tektronix_1240_front_panel.jpeg|
|manufacturer=Tektronix  
caption=Tektronix 1240|
|model=1240
introduced=? |
|summary=Modular Logic Analyzer
discontinued=? |
|image=Tek1241 front.jpg
summary=modular logic analyzer|
|caption=Tektronix 1241
manuals=
|introduced=1984
* [http://w140.com/070-4342-01_1240svcVol1_Jan87.pdf 1240svcVol1]
|discontinued=1993
* [http://w140.com/070-4717-01_1240svcVol2_Oct88.pdf 1240svcVol2]
|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:070-4717-01.pdf|1240 Service Manual Vol.2]]
* [[Media:070-5378-00.pdf|1241 Service Manual addendum]]
* [[Media:062-6926-00|1240 Seminar Workbook]]
* [[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. 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.  


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.
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.
 
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]] (general purpose) or [[P6462]] (TTL) 9-channel probes.
==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 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.
 
Boards are two to six layers.
 
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==
* [http://www.barrytech.com/tektronix/logic_analyzers/tek1240.html Tektronix 1240] / [http://www.barrytech.com/tektronix/logic_analyzers/tek1241.html 1241] / [http://www.barrytech.com/tektronix/logic_analyzers/tek1240_d2.html 1240D2] @ barrytech.com
* [https://www.youtube.com/watch?v=HzD1hGxzYII Using a 1240] to analyse an 8bit micro.
* [https://www.youtube.com/watch?v=wKR-EUWTZDc Video] showing basic operation  of 1241
* [https://www.youtube.com/watch?v=jq-5DeFpxUM Video] showing GPIB implementation
* [https://spurtikus.de/posts/inside_and_teardown/tektronix-1241-la/ Teardown of a 1241] nice pictures, but the site is in German.


== Pictures ==
== Pictures ==


<gallery>
<gallery>
File:Tektronix_1240_front_panel.jpeg  | Tektronix 1240, front view
Tektronix_1240_front_panel.jpeg  | Tektronix 1240, front view
File:Tektronix_1240_rear_panel.jpeg  | Rear panel (note second power switch)
Tektronix_1240_rear_panel.jpeg  | Rear panel (note second power switch)
File:Tektronix_1240_probe_panel.jpeg  | Side with probe panel
Tek1241 front.jpg                | Tektronix 1241 display
File:Tek 155-0270-00 from 1240.jpg    | Tek 155-0270-00 probe data interface hybrid (one of three)
Tek 1241 front.jpg              | Tektronix 1241, front view
File:Tek 1240 A06 CRT Drive.jpg      | A06 CRT drive board (also includes comms pack interface)
Tek 1241 rear.jpg                | Tektronix 1241, rear  view
File:Tek 1240 A06 CRT Drive back.jpg  | A06 CRT drive board (rear side)
 
File:Tek 1240 PSU.jpg                | A07 Power supply
Tektronix_1240_probe_panel.jpeg  | Side with probe panel
File:Tek 1240 PSU back.jpg            | A07 Power supply (rear side)
 
File:Tek 1240 PSU LV Regulators.jpg  | A07 Power supply low voltage regulators
Tek 1240 selftest.jpg            | 1240 self test display
File:Tek 1240 A08.jpg                | A08 Interface board
Tek 1240 state view.jpg          | 1240 state table view
File:Tek 1240 A08 back.jpg            | A08 Interface board (rear side)
Tek 1240 timing diagram view.jpg | 1240 timing diagram view
File:Tek 1240 A09.jpg                | A09 Control processor board
65021240.JPG                    | 6502 Disassembly
File:Tek 1240 A09 back.jpg            | A09 Control processor board (rear side)
 
File:Tek 1240 A10.jpg                | A10 I/O processor board
Tek 155-0270-00 from 1240.jpg    | Tek [[155-0270-00]] probe data interface hybrid (one of three)
File:Tek 1240 A10 back.jpg            | A10 I/O processor board (rear side)
Tek 1240 A06 CRT Drive.jpg      | A06 CRT drive board (also includes comms pack interface)
File:Tek 1240 A11.jpg                | A10 Display generator board
Tek 1240 A06 CRT Drive back.jpg  | A06 CRT drive board (rear side)
File:Tek 1240 A11 back.jpg            | A10 Display generator board (rear side)
Tek 1240 PSU.jpg                | A07 Power supply
File:Tek 1240 A14.jpg                | A14 Trigger board
Tek 1240 PSU back.jpg            | A07 Power supply (rear side)
File:Tek 1240 A14 back.jpg            | A14 Trigger board (rear side)
Tek 1240 PSU LV Regulators.jpg  | A07 Power supply low voltage regulators
File:Tek 1240 A15 D1.jpg              | A15 9 channel board
Tek 1240 A08.jpg                | A08 Interface board
File:Tek 1240 A15 D1 back.jpg        | A15 9 channel board (rear side)
Tek 1240 A08 back.jpg            | A08 Interface board (rear side)
Tek 1240 A09.jpg                | A09 Control processor board
Tek 1240 A09 back.jpg            | A09 Control processor board (rear side)
Tek 1240 A10.jpg                | A10 I/O processor board
Tek 1240 A10 back.jpg            | A10 I/O processor board (rear side)
Tek 1240 A11.jpg                | A11 Display generator board
Tek 1240 A11 back.jpg            | A11 Display generator board (rear side)
Tek 1240 A14.jpg                | A14 Trigger board
Tek 1240 A14 back.jpg            | A14 Trigger board (rear side)
Tek 1240 A15 D1.jpg              | A15 1240D1 9-channel board
Tek 1240 A15 D1 back.jpg        | A15 1240D1 9-channel board (rear side)
Tek 1240 D2.JPG                  | 1240D2
Tek1240-1200C02.jpg              | 1200C02 GPIB COMM PACK
Tek1240-rompack.jpg              | ROM PACK
Tek 1241 state view.jpg          | 1241 State Table View
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        |
1240 Workbook 062-6926-00 front page.jpg | 1240 Workbook
</gallery>
</gallery>


[[Category:Logic Analyzers]]
==Components==
{{Parts|1240}}
 
==Plugins==
{{Plugins|1240}}
 
[[Category:Logic analyzers]]
[[Category:Introduced in 1984]]
[[Category:Parallel printer interface]]
[[Category:RS-232 interface]]
[[Category:GPIB interface]]

Revision as of 07:04, 22 February 2024

Tektronix 1240
Modular Logic Analyzer
Tektronix 1241

Produced from 1984 to 1993

Manuals
Manuals – Specifications – Links – Pictures

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.

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.

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.

There is a design for a multipurpose RAM/ROM pack, called SuperPack by Pavel Korensky. Note the errata in the README file.

It uses either P6460 (general purpose) or P6462 (TTL) 9-channel probes.

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 Z-80A 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.

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

Links

Pictures

  • Tektronix 1240, front view

    Tektronix 1240, front view

  • Rear panel (note second power switch)

    Rear panel (note second power switch)

  • Tektronix 1241 display

    Tektronix 1241 display

  • Tektronix 1241, front view

    Tektronix 1241, front view

  • Tektronix 1241, rear view

    Tektronix 1241, rear view

  • Side with probe panel

    Side with probe panel

  • 1240 self test display

    1240 self test display

  • 1240 state table view

    1240 state table view

  • 1240 timing diagram view

    1240 timing diagram view

  • 6502 Disassembly

    6502 Disassembly

  • Tek 155-0270-00 probe data interface hybrid (one of three)

    Tek 155-0270-00 probe data interface hybrid (one of three)

  • A06 CRT drive board (also includes comms pack interface)

    A06 CRT drive board (also includes comms pack interface)

  • A06 CRT drive board (rear side)

    A06 CRT drive board (rear side)

  • A07 Power supply

    A07 Power supply

  • A07 Power supply (rear side)

    A07 Power supply (rear side)

  • A07 Power supply low voltage regulators

    A07 Power supply low voltage regulators

  • A08 Interface board

    A08 Interface board

  • A08 Interface board (rear side)

    A08 Interface board (rear side)

  • A09 Control processor board

    A09 Control processor board

  • A09 Control processor board (rear side)

    A09 Control processor board (rear side)

  • A10 I/O processor board

    A10 I/O processor board

  • A10 I/O processor board (rear side)

    A10 I/O processor board (rear side)

  • A11 Display generator board

    A11 Display generator board

  • A11 Display generator board (rear side)

    A11 Display generator board (rear side)

  • A14 Trigger board

    A14 Trigger board

  • A14 Trigger board (rear side)

    A14 Trigger board (rear side)

  • A15 1240D1 9-channel board

    A15 1240D1 9-channel board

  • A15 1240D1 9-channel board (rear side)

    A15 1240D1 9-channel board (rear side)

  • 1240D2

    1240D2

  • 1200C02 GPIB COMM PACK

    1200C02 GPIB COMM PACK

  • ROM PACK

    ROM PACK

  • 1241 State Table View

    1241 State Table View

  • 1240D1

    1240D1

  • 1240D2

    1240D2

  • 1240 Workbook

    1240 Workbook

Components

Some Parts Used in the 1240

Part Part Number(s) Class Description Used in
155-0270-00 155-0270-00 Hybrid integrated circuit probe data interface 1240
Intel 8086 Monolithic integrated circuit 16-bit microprocessor 1240 • 2220 • 2221 • 2230 • 2246 • 2232 • 2245A • 4114 • 4115


Plugins

Some Plugins compatible with 1240

Page Manufacturer Model Description Introduced Discontinued
1200C01 Tektronix 1200C01 RS-232 Comm Pack (interface) (?) (?)
1200C02 Tektronix 1200C2 GPIB Comm Pack (interface) (?) (?)
1200C11 Tektronix 1200C11 Parallel Printer Comm Pack (interface) (?) (?)
1240D1 Tektronix 1240/D1 9-channel input card (?) (?)
1240D2 Tektronix 1240D2 18-channel input card (?) (?)
12R01 Tektronix 12R01 Performance Analysis ROM Pack (?) (?)
12RC01 Tektronix 1200C11 Printer Support ROM Pack (?) (?)
12RM01 Tektronix 12RM01 Disassembler ROM Pack (Intel 8080) (?) (?)
12RM02 Tektronix 12RM02 Disassembler ROM Pack (Intel 8085) (?) (?)
12RM03 Tektronix 12RM03 Disassembler ROM Pack (Intel 8086) (?) (?)
12RM04 Tektronix 12RM04 Disassembler ROM Pack (Intel 8088) (?) (?)
12RM05 Tektronix 12RM05 Disassembler ROM Pack (Intel 80186) (?) (?)
12RM06 Tektronix 12RM06 Disassembler ROM Pack (Intel 80188) (?) (?)
12RM08 Tektronix 12RM08 Disassembler ROM Pack (Intel 80286) (?) (?)
12RM21 Tektronix 12RM21 Disassembler ROM Pack (Motorola 6800) (?) (?)
12RM22 Tektronix 12RM22 Disassembler ROM Pack (Motorola 6802) (?) (?)
12RM23 Tektronix 12RM23 Disassembler ROM Pack (Motorola 6808) (?) (?)
12RM24 Tektronix 12RM24 Disassembler ROM Pack (Motorola 6809) (?) (?)
12RM25 Tektronix 12RM25 Disassembler ROM Pack (Motorola 68000) (?) (?)
12RM26 Tektronix 12RM26 Disassembler ROM Pack (Motorola 68008) (?) (?)
12RM27 Tektronix 12RM27 Disassembler ROM Pack (Motorola 68010) (?) (?)
12RM31 Tektronix 12RM31 Disassembler ROM Pack (Motorola 68020) (?) (?)
12RM33 Tektronix 12RM33 Disassembler ROM Pack (Motorola 68030) (?) (?)
12RM41 Tektronix 12RM41 Disassembler ROM Pack (Zilog Z-80) (?) (?)
12RM42 Tektronix 12RM42 Disassembler ROM Pack (Zilog Z8001) (?) (?)
12RM43 Tektronix 12RM43 Disassembler ROM Pack (Zilog Z8002) (?) (?)
12RM62A Tektronix 12RM62A Disassembler ROM Pack (Fairchild F9450) (?) (?)
12RM63 Tektronix 12RM63 Disassembler ROM Pack (MOS Technology 6502) (?) (?)
12RM71 Tektronix 12RM71 Disassembler ROM Pack (National Semiconductor NSC800) (?) (?)
12RM99 Tektronix 12RM99 Disassembler ROM Pack (?) (?)
12RS01 Tektronix 12RS01 8K RAM Pack (?) (?)
PM201 Tektronix PM201 Intel 8086/8088 personality module (?) (?)
PM202 Tektronix PM202 Intel 80186/80188 personality module (?) (?)
PM203 Tektronix PM203 Motorola 68000/08/10 personality module (?) (?)
PM204 Tektronix PM204 Intel 80286 personality module 1985 (?)
PM205 Tektronix PM205 Motorola 68020 personality module (?) (?)
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