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BELL SYSTEM TECHNICAL JOURNAL 



Fig. 17. Rear view of part of the collector (bottom panel), ajnipressor, and two coders. 



digit holes during the sweep are caught by the pulse plate, forming pulses 

 which are amplified, gated and lengthened in the pulse regenerator to con- 

 stitute the desired PCM signals. Retrace of the sweep occurs while the 



