Tektronix 442, Инструкция по эксплуатации

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442 Service
LIST OF ILLUSTRATIONS
Fig-
No. Page
442 O scilloscope....................................... viii
1- 1 442 Oscilloscope dimensions.................... 1-6
2- 1 Commonly used power plugs ................. 2-2
2-2 Power switch locations on bottom of the
442 ............................................................ 2-2
2-3 Power input fuse location on the 442 back
panel.......................................................... 2-3
2-4 Crt Display and Power front panel controls
and connectors ....................................... 2-3
2-5 External Z AXIS INPUT connector on the
back panel of the 442 .............................. 2-4
2-6 Controls and switches accessible through
the bottom of the 442 c a b in e t................ 2-5
2-7 Vertical system c o n tro ls .......................... 2-5
2-8 Horizontal system c o n tro ls ..................... 2-6
2-9 Triggering system c o n tro ls ..................... 2-7
2-10 Probe Compensation . ............................ 2-9
2-11 Display of 0.5 V PROBE ADJ output signal 2-10
2-12 Measuring peak-to-peak voltage of a
waveform................................................... 2-11
2-13 Measuring instantaneous dc voltage with
respect to a reference v o lta g e ................ 2-11
2-14 Measuring the time duration between
points on a w aveform .............................. 2-14
2-15 Measuring rise t i m e ................................. 2-15
2-16 Measuring time difference between two
p ulses....................................................... 2-15
2-17 Measuring phase difference...................... 2-16
2- 18 Phase difference measurement with an X-Y
display ..................................................... 2-17
3- 1 Sweep generator and sweep gate timing
diagram ..................................................... 3-9
3- 2 Foldback circuit a c tio n ............................. 3-10
4- 1 Vertical deflection accuracy test setup . . 4-5
4-2 Bandwidth check test setup...................... 4-7
4-3 Triggering and Z-Axis input.check test
setup......................................................... 4-9
4-4 Timing accuracy check test s e tu p .......... 4-11
4-5 442 cabinet rem oval................................. 4-13
4-6 Moving Interface board to adjustment
access position ....................................... 4-15
4-7 Low-voltage power supply adjustment
location..................................................... 4-17
Fig.
No.
Page
4-8 Interface board adjustment locations
(board shown in access position)........... 4-18
4-9 Vertical attenuator, preamplifier, delay line
driver, and CH 2 dc trigger level adjustment
loca tion s................................................... 4-21
4-10 Display of correct (idealized) attenuator
compensation .......................................... 4-21
4-11 Horizontal adjustment locations on A14
Horizontal Output b o a rd .......................... 4-23
4-12 Horizontal adjustment locations on A12
Horizontal board and A ll Trigger Switch
board ....................................................... 4-24
4- 13 Triggering and X-Axis adjustment locations
on the A11 Trigger Switch b o a rd ............ 4-26
5- 1 Cabinet removal........................................ 5-1
5-2 Moving Interface board to access position 5-3
5-3 Color codes............................................... 5-5
5-4 Semiconductor lead configuration.......... 5-6
5-5 Multi-pin connector holder indexing . . . . 5-7
5-6 Pin connector re-installation in multi-pin
h o ld e rs ..................................................... 5-15
5-7 Shaft-knob assembly removal ................. 5-17
5-8 Attenuators, Attenuator Shift, Horizontal
Output, and Power Supply assembly
rem oval..................................................... 5-17
5-9 Interface, Trigger Switch, Horizontal, and
Timing (SEC/DIV switch) assemblies
rem oval..................................................... 5-19
The following illustrations are located on foldout
pages in Section 7 Diagrams and Circuit Board
Illustrations.
7-1 A6—CH 1 Attenuator circuit board
component locations
7-2 A7—CH 2 Attenuator circuit board
component locations
7-3 Attenuator circuit board locations
7-4 442 Oscilloscope block diagram
7-5 A8—Vertical circuit board component
locations
7-6 Vertical circuit board location
ii
REV A MAY 1980