360

The Tektronix Type 360 is the "indicator unit" of the 160 Series system. It contains a 3WP CRT, vertical amplifier, and horizontal amplifier, and CRT circuit. It does not contain the low-voltage power supply, which is a separate component in the 160 system.

The vertical signal path is a switched compensated attenuator, followed by a 6AU6 differential amplifier stage, followed by a second 6AU6 differential stage. The horizontal amplifier uses a 6AN8 common-cathode gain stage followed by a 6AU6 common-cathode amplifier as a phase splitter to differentially drive the CRT horizontal deflection plates.

The CRT circuit in the Type 360 uses a 6AQ5-based power oscillator to drive two 5642 high-voltage rectifier tubes, one for the CRT grid voltage, and one for the CRT cathode voltage. The high-voltage regulator feedback amplifier is made from two cascaded common-cathode amplifiers, each made from one half of a 12AT7 dual triode.

Open-frame construction allows the 360 to operate without fan cooling.

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  360 front view

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  The BNC connectors are a modification.

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