514: Difference between revisions

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Prior to the 514, customers had to choose between an instrument with
Prior to the 514, customers had to choose between an instrument with
10MHz bandwidth (the [[511]]) or an instrument with DC response (the [[512]]).
10MHz bandwidth (the [[511]]) or an instrument with DC response (the [[512]]).
The 514 provides DC response and 10MHz bandwidth.   
The 514 provides DC response and 10MHz bandwidth.  It weighs 60 pounds and
consumes 360 watts.  The 514 uses a [[5CPA]] CRT with a total accelerating
voltage of 3000 volts.  The deflection sensitivity of the CRT is approximately
27V/cm vertical and 32V/cm horizontal.


A 514D model exists, which has a lumped L-C [[delay line]].   
The power supply is regulated based on a -140V reference produced by a [[OD3]]
gas regulator tube.
 
A 514D model exists, which has a 24-section 250ns lumped L-C [[delay line]].   
There is also a 514AD.  How does the 514AD differ from the 514D?
There is also a 514AD.  How does the 514AD differ from the 514D?



Revision as of 16:56, 5 June 2012

The Tektronix 514 is a monolithic general-purpose oscilloscope introduced in 1949 or 1950. It was designed by Tektronix engineers Bob Davis and Dick Rhiger. Using a three-section distributed distributed amplifier, it provides frequency response from DC to 10MHz. Prior to the 514, customers had to choose between an instrument with 10MHz bandwidth (the 511) or an instrument with DC response (the 512). The 514 provides DC response and 10MHz bandwidth. It weighs 60 pounds and consumes 360 watts. The 514 uses a 5CPA CRT with a total accelerating voltage of 3000 volts. The deflection sensitivity of the CRT is approximately 27V/cm vertical and 32V/cm horizontal.

The power supply is regulated based on a -140V reference produced by a OD3 gas regulator tube.

A 514D model exists, which has a 24-section 250ns lumped L-C delay line. There is also a 514AD. How does the 514AD differ from the 514D?

It has no thermal cutoff.