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{{Plugin Sidebar | | {{Plugin Sidebar | ||
manufacturer=Tektronix | type=7L12 | | |manufacturer=Tektronix | ||
summary=1.8 GHz Spectrum Analyzer | | |series=7000-series scopes | ||
image=Tek-7l12-led-front.jpg | | |type=7L12 | ||
caption=Tektronix 7L12 (later model) | | |summary=1.8 GHz Spectrum Analyzer | ||
introduced=1971 | | |image=Tek-7l12-led-front.jpg | ||
discontinued=1988 | | |caption=Tektronix 7L12 (later model) | ||
|introduced=1971 | |||
manuals= | |discontinued=1988 | ||
* [ | |designers=Morris Engelson;Linley Gumm;Gene Kauffman;Larry Lockwood;Gordon Long;Steve Morton;Paul Parks;Fred Telewski;Neal Broadbent;Jack Doyle;Al Huegli;Steve Skidmore;Leighton Whitsett;Judy Hanson; Robert Holmes;Carolyn Moore;Rena Randle | ||
* [ | |manuals= | ||
* [https://w140.com/7l12_foldouts_sm.pdf Tektronix 7L12 Schematics | * [[Media:070-1298-01.pdf|Tektronix 7L12 Instruction Manual -01]] / ''[[Media:070-1298-01.pdf|Alternate copy]] (OCR)'' | ||
* [[Media:070-1298-02.pdf|Tektronix 7L12 Instruction Manual -02]] | |||
* [https://w140.com/7l12_foldouts_sm.pdf Tektronix 7L12 Schematics] | |||
* [[Media:Tek 7L12 factory cal december 1972.pdf|Tektronix 7L12 Factory Calibration Procedure]] | * [[Media:Tek 7L12 factory cal december 1972.pdf|Tektronix 7L12 Factory Calibration Procedure]] | ||
* [[Media:26W-4889.pdf|No Loose Ends - Brochure for using the spectrum analyzer for CATV]] | * [[Media:26W-4889.pdf|No Loose Ends - Brochure for using the spectrum analyzer for CATV]] | ||
* [[Media:26AX-3582-3.pdf|FM Broadcast Measurements Using the Spectrum Analyzer]] | * [[Media:26AX-3582-3.pdf|FM Broadcast Measurements Using the Spectrum Analyzer]] | ||
}} | }} | ||
The '''Tektronix 7L12''' is a 1.8 GHz Spectrum Analyzer plug-in for [[7000-series scopes]]. | The '''Tektronix 7L12''' is a 1.8 GHz Spectrum Analyzer plug-in for [[7000-series scopes]]. | ||
It is a double-width plugin to be installed in the right vertical and left (or only) horizontal bay. | It is a double-width plugin to be installed in the right vertical and left (or only) horizontal bay. | ||
Early models had a mechanical reference level readout. Later, front panel outputs for 1st and 2nd LO were added to allow connecting a [[TR501]] or [[TR502]] tracking generator. | Early models had a mechanical reference level readout. Later, front panel outputs for 1st and 2nd LO were added to allow connecting a [[TR501]] or [[TR502]] tracking generator. Late models had LED reference level readout. | ||
Late models had LED reference level readout. | |||
The 7L12 does not have the UNCAL indicator typical for spectrum analyzers that alerts the operator when the sweep speed is too fast for the given resolution. | The 7L12 does not have the UNCAL indicator typical for spectrum analyzers that alerts the operator when the sweep speed is too fast for the given resolution. | ||
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The Tek catalogs suggested the [[7603]] Opt.06 or [[7613]] Opt.06 as suitable mainframes. | The Tek catalogs suggested the [[7603]] Opt.06 or [[7613]] Opt.06 as suitable mainframes. | ||
According to [[Media:Tekscope_1972_V4_N1_Jan_1972.pdf|Tekscope Vol.4 No.1 Jan 1972]], the design teams included: ''Electrical Engineering – [[Morris Engelson]], [[Linley Gumm]], [[Gene Kauffman]], [[Larry Lockwood]], [[Gordon Long]], [[Steve Morton]], [[Paul Parks]], [[Fred Telewski]]. Mechanical Engineering – [[Neal Broadbent]], [[Jack Doyle]], [[Al Huegli]], [[Steve Skidmore]], [[Leighton Whitsett]]. Integrated Circuits – [[Judy Hanson]], [[Robert Holmes]], [[Carolyn Moore]], [[Rena Randle]]''. | |||
{{BeginSpecs}} | {{BeginSpecs}} | ||
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|} | |} | ||
According to an [[Media:Tek Schottky Diodes Memo rot.pdf|internal memo]], in 1979 annual sales were estimated at 365 units. | |||
==Mods== | ==Mods== | ||
* [ | * [https://w140.com/Tek7L12-139U.pdf Tektronix 7L12 Mod 139U Increases Bandwidth to 2.5 GHz] | ||
==Links== | ==Links== | ||
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* [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_special/spectrumanalyzer_7L12.htm Tek 7L12 @ amplifier.cd] | * [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_special/spectrumanalyzer_7L12.htm Tek 7L12 @ amplifier.cd] | ||
* [http://www.barrytech.com/tektronix/tek7000/tek7l12.html Tek 7L12 @ barrytech.com] | * [http://www.barrytech.com/tektronix/tek7000/tek7l12.html Tek 7L12 @ barrytech.com] | ||
* [https://www.youtube.com/watch?v=f02rCpkjs8Q 7L12 repair] by vintageTek Museum @ YouTube (shows how to pull out the center board) | |||
* 7L12 videos: [https://youtube.com/watch?v=eEsL9443Rt8 #1] / [https://youtube.com/watch?v=a5-IXJEqMbM #2] / [https://youtube.com/watch?v=ctL8NuEvQhk #3] / [https://youtube.com/watch?v=oZA2Fa78_00 #4] [https://youtu.be/f02rCpkjs8Q #5] | * 7L12 videos: [https://youtube.com/watch?v=eEsL9443Rt8 #1] / [https://youtube.com/watch?v=a5-IXJEqMbM #2] / [https://youtube.com/watch?v=ctL8NuEvQhk #3] / [https://youtube.com/watch?v=oZA2Fa78_00 #4] [https://youtu.be/f02rCpkjs8Q #5] | ||