Tektronix MR 501 Instruction Manual page 12

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Servicing Information—MR 501
DIAGRAMS, PARTS LISTS, AND ILLUSTRATIONS
Symbols and Reference Designators
Electrical components shown on the diagrams are in the following units unless noted otherwise:
Capacitors = Values one or greater are in picofarads (pF).
Values less than one are in microfarads (uF).
Ohms (02)
Symbols used on the diagrams are based on ANSI Y32.2 — 1970.
Logic symbology is based on MIL-STD-806B in terms of positive logic. Logic symbols depict the logic function performed
The following special symbols are used on the diagrams:
7
External Screwdriver adjustment.
External control or connector.
Clockwise control rotation tn direction of arrow.
Refer to diagram number indicated in diamond.
Refer to waveform number indicated in hexagon.
~~ Connection soldered to circuit board.
Connection made to circuit board with interconnecting pin.
Blue tint encloses components located on circuit board.