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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]]. | |||
Its center frequency is set on a trio of rotary switches and can range from 50Hz to | Its center frequency is set on a trio of rotary switches and can range from 50Hz to | ||
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Although Type 1L5 can operate in any classic plug-in scope*, it is most useful by far | Although Type 1L5 can operate in any classic plug-in scope*, it is most useful by far | ||
in the Type [[549]] storage mainframe, where it's possible to | in the Type [[549]] storage mainframe, where it's possible to | ||
sweep slowly with the narrower resolution bandwidths. | sweep slowly with the narrower resolution bandwidths. | ||
<nowiki>*</nowiki> [[531]]/[[535]]/[[541]]/[[545]] need a wiring mod | <nowiki>*</nowiki> [[531]]/[[535]]/[[541]]/[[545]] need a wiring mod |