TDS 520A, 524A, 540A, & 544A Service Manual
9Ć1
Diagrams
This contains the block diagram and the interconnection diagram for the
TDS 520A, 524A, 540A, & 544A Digitizing Oscilloscopes.
Graphic symbols and class designation letters are based on ANSI Standard
Y32.2-1975. Abbreviations are based on ANSI Y1.1-1972.
Logic symbology is based on ANSI/IEEE Std 91Ć1984 in terms of positive
logic. Logic symbols depict the logic function performed and can differ from
the manufacturer's data.
The tilde (~) preceding a signal name indicates that the signal performs its
intended function when in the low state.
Other standards used in the preparation of diagrams by Tektronix. Inc are:
H Tektronix Standard 062-2476 Symbols and Practices for Schematic
Drafting
H ANSI Y14.159-1971 Interconnection Diagrams
H ANSI Y32.16-1975 Reference Designations for Electronic Equipment
H MIL-HDBK-63038-1A Military Standard Technical Manual Writing
Handbook
Symbols