Difference between revisions of "1L5"

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990kHz.  Minimum resolution bandwidth is 10Hz.  It has a 1 meg input resistance.
 
990kHz.  Minimum resolution bandwidth is 10Hz.  It has a 1 meg input resistance.
  
Type 1L5 was sold from 1967 or 1968 until the end of the classic plugin scope
+
Type 1L5 was sold from 1967 or 1968 until the end of the classic plug-in scope
line after 1974.  Not particularly well calibrated in either frequency, bandwidth,
+
line after 1974.  Not particularly accurate in either frequency, bandwidth,
or amplitude, it was no match for HP's 141T/8556A/8552B combination as performance
+
or amplitude, it was no match for HP's 141T/8556A/8552B combination in performance,
was concerned, but it was a small fraction of the price.
+
but it was a small fraction of the price.
  
Although Type 1L5 can operate in any classic plugin scope*, it is by far the
+
Although Type 1L5 can operate in any classic plug-in scope*, it is most useful by far
most useful in the Type [[549]] storage mainframe, where it's possible to
+
in the Type [[549]] storage mainframe, where it's possible to
sweep slowly and take advantage of 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  

Revision as of 14:29, 16 May 2011

The Tektronix 1L5 is a low-frequency spectrum analyzer for 500-series scopes.

Its center frequency is set on a trio of rotary switches and can range from 50Hz to 990kHz. Minimum resolution bandwidth is 10Hz. It has a 1 meg 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, where it's possible to sweep slowly with the narrower resolution bandwidths.

* 531/535/541/545 need a wiring mod to alleviate vertical amp instability.