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The Tektronix T5 aka T551  (P/N 154-0186-00, 154-0160-00, 154-0210-00, 154-0189-00, 154-0143-00) is a dual-beam CRT used in the 551 below S/N 2032. Later models used the T5511 tube.

It has two electron guns and two pairs of vertical deflection plates, but common horizontal deflection plates.

The improvement added in the T5511 was to support a horizontal beam registration circuit that allows to compensate for stray fields in order to make the starting times of both beams coincide.



Part numbers

Service Scope No.27, August 1964
Phosphor Part No.
P1 154-186
P2 154-160
P5 154-210
P7 154-189
P11 154-143