504: Difference between revisions

504 (view source)

553 bytes added , 15 March 2011

added similarity with 503 and lack of delay line

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-The Tektronix 504 is a monolithic oscilloscope with a bandwidth of 450kHz [[introduced in 1960]].
+The Tektronix 504 is a monolithic oscilloscope with a bandwidth of 450kHz [[introduced in 1960]]. It was introduced at the same time as the 503, and is mechanically and electrically identical, other than the vertical amplifier.  The 503 incorporates two identical phase matched amplifiers with true differential inputs to support X-Y operation, whereas the 504 contains a simple ground referenced vertical amplifier.  Due to the low bandwidth and need to keep the selling price low, neither the 503 or 504 include delay lines in the vertical signal path.
+Both scopes use the same CRTs.  The CRT circuit uses a single [[5642]] to generate the -3000V cathode voltage.
+There is no post-deflection acceleration.
 Triggering is done using a multivibrator made of a [[6DJ8]] tube.
 The vertical signal path has a [[6DJ8]] first stage,
 a BJT second stage, followed by the the output stage.
 The vertical and horizontal output stages uses pairs of [[6CB6]] tubes.
-The CRT circuit uses a single [[5642]] to generate the -3000V cathode voltage.
-There is no post-deflection acceleration.
+The 504 was also offered in a rack mount version, the RM504.
+.
 * [http://bama.edebris.com/download/tek/504/tek%20504.v6.pdf Tektronix 504 Manual (PDF)]