Tektronix 2215 Instruction Manual page 257

DIAGRAMS AND CIRCUIT BOARD ILLUSTRATIONS
Symbols
Y14.15, 1966
Graphic symbols and class designation letters are
Y14.2, 1973
based on ANSI Standard Y32.2-1975.
Y10.5, 1968
Logic symbology is based on ANSI Y32.14-1973 in
terms of positive logic. Logic symbols depict the logic
function performed and may differ from the manufac­
American National Standard Institute
turer's data.
New York, New York 10018
The overline on a signal name indicates that the signal
Component Values
performs its intended function when it is in the low state.
Electrical components shown on the diagrams are in
the following units unless noted otherwise:
Abbreviations are based on ANSI Y1.1-1972.
Capacitors = Values one or greater are in picofarads (pF).
Values less than one are in microfarads
Other ANSI standards that are used in the preparation
m .
of diagrams by Tektronix, Inc. are: Resistors = Ohms (Q).
The information and special symbols below may appear in this manual.
Assembly Numbers and Grid Coordinates
The schematic diagram and circuit board component
location illustration have grids. A lookup table with the
Each assembly in the instrument is assigned an
grid coordinates is provided for ease of locating the
assembly number (e.g., A20). The assembly number
component. Only the components illustrated on thefacing
appears on the circuit board outline on the diagram, in the
diagram are listed in the lookup table. When more than
title for the circuit board component location illustration,
one schematic diagram is used to illustrate the circuitry on
and in the lookup table for the schematic diagram and
corresponding component locator illustration. The a circuit board, the circuit board illustration may only
Replaceable Electrical Parts list is arranged by assemblies appear opposite the first diagram on which it was il­
in numerical sequence; the components are listed by lustrated; the lookup table will list the diagram number of
component number *(see following illustration for other diagrams that the circuitry of the circuit board
constructing a component number). appears on.
A B C D
Function Block Title
Internal
Screwdriver
Adjustment
Cam Switch
Closure Chart
(Dot indicates
switch closure)
Etched Circuit Board
Outlined in Black
Refer to Waveform
Function Block
Outline
1C type
Test Voltage
Heat Sink
Board Name
P/O — Part of
circuit board
Assembly Number
Tektronix Part No.
for circuit boards
I o l R e p l a c
Drafting Practices.
Line Conventions and Lettering.
Letter Symbols for Quantities Used in
Electrical Science and Electrical
Engineering.
1430 Broadway
( ^
and 3 — 1st, 2nd, and 3rd significant figures
(m ) —multiplier —tolerance
(TCj) —temperature coefficient
—polarity and voltage rating
COLOR S IG N IF IC A N T
FIGURES
Modified Component—See
Parts List (Depicted in grey,
or with grey outline) BLACK
0
BROWN 1
Strap or Link
RED 2
ORANGE
3
Plug to E.C. Board
YELLO W 4
I Box I - Identifies Panel
Controls, Connectors and GREEN 5
Indicators
BLUE 6
Coaxial connectors:
male
V IO L E T
female 7
Plug Index; signifies pin No. 1
GRAY 8
External Screwdriver Adj.
W HITE 9
Shielding
GOLD -
Selected value, see Parts List
and Maintenance Section for
SILVER
Selection Criteria -
NONE
-
Decoupled or Filtered
Voltage
Refer to Diagram Number
Schematic Name
and Number
COLOR CODE
and/or color code may not be present
on some capacitors
RESISTORS CAPACITORS
T A N T A L U M
TO LERA NCE
M U L T IP L IE R TO LERA NCE M U LT IP L IE R
under 10 pF
over 10 pF
1 ±2 pF
— 1 ±20%
10 ± i% ±0.1 pF
10 ±1%
102 or 100 ±2% 102 or 100 ±2% —
103 or 1 K ±3% 103 or 1000 ±3% —
104 or 10 K
±4% 104 or 10,000 +100% - 9 % —
10s or 100 K ±%% 10S or 100,000 ±0.5 pF
±5%
106 or 1 M • ±54% 106 or 1,000,000 —
—
— il/1 0 % — — —
±0.25 pF
— — 10'2 or 0.01 +80% -2 0 %
— — 1 0 '1 or 0.1 ±1 pF
±10%
1 0 " 1 or 0.1 ±5% — — —
10"2 or 0.01 ±10% — — —
±1 pF
— ±20% — ±10%
( 1 8 6 1 - 2 0 A ) 2 6 6 2 - 4 8
Figure 9-1. Color codes for resistors and capacitors.
DIPPED
V O L TA G E
R A TIN G
4 VDC
6 VDC
10 VDC
15 VDC
20 VDC
25 VDC
35 VDC
50 VDC
—
3 VDC
—
—
—
Figure 9-2. Semiconductor lead configurations.
Section 9-Diagrams—2215 Service