TDS 310, TDS 320 & TDS 350 Service Manual 9Ć1
Diagrams and Circuit Board IllustrationsThis section contains circuit board illustrations, component locator tables,
waveform illustrations, and schematic diagrams for this oscilloscope.
Graphic symbols and class designation letters are based on ANSI Standard
Y32.2Ć1975. Abbreviations are based on ANSI Y1.1Ć1972.
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:
HTektronixStandard 062Ć2476 Symbols and Practices for Schematic
Drafting
HANSI Y14.159Ć1971 Interconnection Diagrams
HANSI Y32.16Ć1975 Reference Designations for Electronic Equipment
HMILĆHDBKĆ63038Ć1AMilitary Standard Technical Manual Writing HandĆ
book
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 (mF).
Resistors: Values are in Ohms (W).
Each assembly in the instrument has an assembly identifier (for example,
MAIN or A5). The assembly identifier appears on the circuit board outline on
the diagram (see Figure 9Ć1), in the title for the circuit board component
location illustration, and in the lookup table for the schematic diagram and
corresponding component locator illustration. The Replaceable Electrical
Parts list is arranged by assemblies in numerical sequence; the components
are listed by component number.