Tektronix Type 3B3 Time Base Plug-In Instruction Manual

Tektronix Instruction Service Manual Type 3B3 Plug In Unit

Original Tektronix Instruction Manual for the 3B3 Plugin

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TEKTRONIX Type 3B3 Timebase Plug-in Instruction and Technical Manual

Tektronix Type 3B3 Plug-In Unit Instruction Manual 070-0365-01

Original Tektronix Instruction (later) Manual for the 3B3 Plugin