1L5: Difference between revisions
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{{Plugin Sidebar 2 | | |||
title=Tektronix 1L5 | | |||
summary=1 MHz Spectrum Analyzer | | |||
introduced=1967 | | |||
discontinued=1974 | | |||
manuals= | |||
* [http://bama.edebris.com/download/tek/1l5/Tek%201L5_v6.pdf Tektronix 1L5 Manual (PDF)] | |||
}} | |||
The '''Tektronix 1L5''' is a low-frequency spectrum analyzer for [[500-series scopes]]. | The '''Tektronix 1L5''' is a low-frequency spectrum analyzer for [[500-series scopes]]. | ||
It is very similar to the [[3L5]]. | It is very similar to the [[3L5]]. | ||
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<nowiki>*</nowiki> [[531]]/[[535]]/[[541]]/[[545]] need a wiring mod | <nowiki>*</nowiki> [[531]]/[[535]]/[[541]]/[[545]] need a wiring mod | ||
to alleviate vertical amp instability. | to alleviate vertical amp instability. | ||
==Pictures== | ==Pictures== | ||
Revision as of 14:52, 21 August 2014
Template:Plugin Sidebar 2 The Tektronix 1L5 is a low-frequency spectrum analyzer for 500-series scopes. It is very similar to the 3L5.
Its center frequency is set on a trio of rotary switches and can range from 50 Hz to 990 kHz. Minimum resolution bandwidth is 10 Hz. It has a 1 MΩ input resistance.
Type 1L5 was sold from 1967 or 1968 until the end of the classic plug-in scope line after 1974. Not particularly accurate in either frequency, bandwidth, or amplitude, it was no match for HP's 141T/8556A/8552B combination in performance, but it was a small fraction of the price.
Although Type 1L5 can operate in any classic plug-in scope*, it is most useful by far in the Type 549 storage mainframe which allows slow sweeps needed to match the narrower resolution bandwidths.
In conjunction with the 015-0107-00 "Swept Frequency Generator" (tracking generator), the 1L5 can also measure frequency response.
* 531/535/541/545 need a wiring mod to alleviate vertical amp instability.
Pictures
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549 works fine with 1L5
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top
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right
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rear
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left
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front
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bottom
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1L5
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Block Diagram
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Attenuators and Input
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Center Frequency Switching
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Swept Frequency Generator
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Variable Resolution Amplifier
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Dispertion Warning Light
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Output Amplifier
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Calibrator
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Interconnecting Plug and Power Distribution
