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240: Difference between revisions
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[[ | {{Instrument Sidebar | ||
|manufacturer=Tektronix | |||
|model=240 | |||
|class=Controller | |||
|series= | |||
|summary=Program Control Unit | |||
|image=Tek_240_front.jpg | |||
|caption=Tek 240 front | |||
|introduced=1968 | |||
|discontinued=(?) | |||
|designers= | |||
|manuals= | |||
* [[Media:070-0749-00.pdf|Tektronix 240 Manual]] (OCR) | |||
* [https://w140.com/tek_240_r250_description.pdf 240 and R250 Description from Tektronix Automated Testing Systems book] | |||
* [[Media:Tek 240-250 fcp april 1969.pdf|Tektronix 240-250 Factory Calibration Procedure, April 1969]] (OCR) | |||
}} | |||
The '''Tektronix 240''' is a pre-[[GPIB]] "Program Control Unit" [[introduced in 1968]] for the Tektronix [[568]] scope and [[230]] readout. | The '''Tektronix 240''' is a pre-[[GPIB]] "Program Control Unit" [[introduced in 1968]] for the Tektronix [[568]] scope and [[230]] readout. | ||
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The 240 is able to advance sequentially through program steps stored on either the paper tape or disk unit, with basic program control flow (stop or branch) available, driven by the status of the limit indicators on the 230. Each test can be programmed to occur once or twice, in order to minimize the chance of errors due to transients. Each test contains the address of the next test, and a branch status simply adds one to that address. Through J302, addressing functions can be monitored and controlled; presumably more advanced program flow control could be implemented using a computer. | The 240 is able to advance sequentially through program steps stored on either the paper tape or disk unit, with basic program control flow (stop or branch) available, driven by the status of the limit indicators on the 230. Each test can be programmed to occur once or twice, in order to minimize the chance of errors due to transients. Each test contains the address of the next test, and a branch status simply adds one to that address. Through J302, addressing functions can be monitored and controlled; presumably more advanced program flow control could be implemented using a computer. | ||
The address of the test program on disc is a four-digit decimal number set by the DISC TEST ADDRESS switches on the panel of the 240. | |||
The first digit corresponds to the head number on the disc drive. | |||
The other three digits correspond to the sector number. | |||
==Links== | |||
{{Documents|Link=240}} | |||
==See Also== | ==See Also== | ||
* [[020-0025-00]] Disc for use with the Tektronix 240 and 250 | |||
* [[012-0131-00|012-0131-00 Interconnecting Cable]] | * [[012-0131-00|012-0131-00 Interconnecting Cable]] | ||
* [[012-0135-00|012-0135-00 Triangle Interconnecting Cable]] | * [[012-0135-00|012-0135-00 Triangle Interconnecting Cable]] | ||
==Pictures== | ==Pictures== | ||
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</gallery> | </gallery> | ||
[[Category:Controllers]] | [[Category:Controllers]] | ||