1L5: Difference between revisions

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It is very similar to the [[3L5]].
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
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.
990 kHz.  Minimum resolution bandwidth is 10 Hz.  It has a 1 MΩ input resistance.


Type 1L5 was sold from 1967 until the end of the classic plug-in scope
Type 1L5 was [[introduced in 1967|sold from 1967]] until the end of the classic plug-in scope line.   
line.  Not particularly accurate in either frequency, bandwidth,
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.
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 500-series scope*,
Although Type 1L5 can operate in any 500-series scope*, it is most useful by far in the Type [[549]] storage mainframe which allows slow sweeps needed to match the narrower resolution bandwidths.   
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 Converter (tracking generator),
In conjunction with the [[015-0107-00]] Swept Frequency Converter (tracking generator), the 1L5 can also measure frequency response.   
the 1L5 can also measure frequency response.   


<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.
{{MissingSpecs}}
 
==Links==
{{Documents|Link=1L5}}


==Pictures==
==Pictures==
'''External'''
<gallery>
<gallery>
Tek 1L5 bottom2.jpeg ‎
Tek 1L5 front2.jpeg ‎| Front panel
Tek 1L5 front2.jpeg ‎
Tek 1l5 front.JPG
Tek 1L5 left2.jpeg ‎
Tek 1l5 2409.jpg
Tek 1L5 rear2.jpeg ‎
Tek 1L5 right2.jpeg ‎
Tek 1L5 top2.jpeg
Tek 1l5 1.jpg
Tek 1l5 1.jpg
Tek 1l5 2.jpg
Tek 1l5 2.jpg
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Tek 1l5 4.jpg
Tek 1l5 4.jpg
Tek 1l5 5.jpg
Tek 1l5 5.jpg
549_1L5.JPG| 549 works fine with 1L5
Tek 1l5 rear.JPG | Rear
Tek 1L5 rear2.jpeg ‎
</gallery>
 
'''Internal'''
<gallery>
Tek 1L5 bottom2.jpeg ‎
Tek 1L5 left2.jpeg ‎
Tek 1L5 right2.jpeg ‎
Tek 1L5 top2.jpeg
Tek 1l5 top2.JPG|top
Tek 1l5 top2.JPG|top
Tek 1l5 right.JPG|right
Tek 1l5 right.JPG|right
Tek 1l5 rear.JPG|rear
Tek 1l5 left.JPG|left
Tek 1l5 left.JPG|left
Tek 1l5 front.JPG|front
Tek 1l5 bottom.JPG|bottom
Tek 1l5 bottom.JPG|bottom
Tek 1l5 2409.jpg|1L5
</gallery>
 
'''Pre-production unit'''
<gallery>
Preproduction incomplete 1L5.jpg|Preproduction 1L5 (serial A01)
Preproduction incomplete 1L5 left.jpg|Preproduction 1L5 (serial A01)
Preproduction incomplete 1L5 right.jpg|Preproduction 1L5 (serial A01)
</gallery>
 
'''Measurements, Diagrams'''
<gallery>
549_1L5.JPG | 1L5 works fine in [[549]]
Tek 1L5 3MHz filter response 10db div.jpg|Measured frequency response of 3 MHz filter from P90 to P280 with Q290 removed to disable 3.1 MHz oscillator, but powered up. 10 dB/div.
Tek 1L5 3MHz filter response 1db div.jpg|Measured frequency response of 3 MHz filter. 1 dB/div.
Tek 1l5 block diagram.png|Block Diagram
Tek 1l5 block diagram.png|Block Diagram
Tek 1l5 attenuators and input.png|Attenuators and Input
Tek 1l5 attenuators and input.png|Attenuators and Input
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Tek 1l5 calibrator.png|Calibrator
Tek 1l5 calibrator.png|Calibrator
Tek 1l5 plug and power.png|Interconnecting Plug and Power Distribution
Tek 1l5 plug and power.png|Interconnecting Plug and Power Distribution
Preproduction incomplete 1L5.jpg|Preproduction 1L5 (serial A01)
Preproduction incomplete 1L5 left.jpg|Preproduction 1L5 (serial A01)
Preproduction incomplete 1L5 right.jpg|Preproduction 1L5 (serial A01)
Tek 1L5 3MHz filter response 10db div.jpg|Measured frequency response of 3 MHz filter from P90 to P280 with Q290 removed to disable 3.1 MHz oscillator, but powered up. 10 dB/div.
Tek 1L5 3MHz filter response 1db div.jpg|Measured frequency response of 3 MHz filter. 1 dB/div.
</gallery>
</gallery>