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1401: Difference between revisions
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[[Image:Tek1401a-front.JPG|thumb|600px|right|Tektronix 1401A Spectrum Analyzer Module]] | |||
It covers the frequency range from 1MHz to 500MHz. | It covers the frequency range from 1MHz to 500MHz. | ||
It uses an external oscilloscope, | It uses an external oscilloscope, | ||
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as a display. | as a display. | ||
The 1401A can be operated on batteries or 12V or wall power. | The 1401A can be operated on batteries or 12V or wall power. | ||
See TekScope January 1972 pages 14-15 for some servicing notes that | |||
Tek wrote after the manual was published. | |||
There is one tunnel diode found in the external trigger circuit. | |||
It is a 152-0402-00, a 2mA, 25pF tunnel diode in a DO-17 package. | |||
It's only necessary if you use the external trigger input. | |||
The input attenuator is a fairly custom part due to the IF gain pot | |||
that is concentric with the RF atten control. Dissassembly of the | |||
attenuator is easy after removing it from the 1401A. Note that the | |||
IF gain pot is removed via two allen setscrews. To bench test the | |||
attenuator with DC, use a 50 ohm terminator | |||
* [[List of manuals that are needed|Manual needed]] | * [[List of manuals that are needed|Manual needed]] | ||