22

The Tektronix Model 22 and successor 22A are time base plug-ins for the 555 dual-beam scope.

Tektronix Type 22
Time base plug-in Tek 22 front Compatible with 555 Produced from 1959 to (?) Manuals Type 21 and 22 Factory Calibration Procedure (PDF, OCR) 21A and 22A section of 555 manual (PDF) 21A and 22A section of 555 manual (PDF, OCR, bad-OCR) (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

Type 22 is suggested as the lower beam time base, as it contains delayed trigger circuitry, and only the lower beam horizontal section is provided with delayed trigger pickup circuitry. The Delay multiplier control pot is also provided on the lower beam section.

Key Specifications

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Pictures

Type 22

22 front
22 top
22 bottom
Type 21 and 22

Type 22A

22A front
22A TD trigger board
22A top
22A bottom