561: Difference between revisions

561 (view source)

206 bytes added , 24 April 2013

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 A special 561S was introduced as a special product,
 modified from a 561A.
-The product did not appear in a Tek catalog.
+It did not appear in any Tek catalog.
 With special modified amplifier and time base ([[3A1S]] and [[3B1S]]),
-it achieved a higher 25 MHz system bandwidth.
+and a special CRT (T5033),
-These were the only plug-ins which could be used in the 561S,
+it achieved a 25 MHz system bandwidth,
-as the design uses a special CRT with higher deflection sensitivity
+which is 2.5x the bandwidth of a 561A.
-to minimize the plug-in voltage swings.
+The 3A1S and 3B1S were the only plug-ins that could be used in the 561S
+because the T5033 CRT has higher deflection sensitivity than the CRT used in
+the 561, 561A, and 561B.  The vertical deflection sensitivity of the
+T5033 is 11.7 volts/cm. The 561A has the T561 CRT which has vertical
+deflection sensitivity of 19.5 volts/cm.
 The higher BW of the 561S came at the expense of
 trading off some of the advances gained in the original 561A.