AIR
FORCE
T033A1 -13-496-1
NAVELEX
0969-LP-170-0010
General
Information
SECTION
I
INTRODUCTION AND GENERAL
INFORMATION
1-1.
INTRODUCTION
a.
Manual
Purpose. This manual provides instructions
for
operation and maintenance
of the AN/USM-425(V)1
Oscilloscope
and includes illustrated
parts breakdown
data.
The
AN/USM-425(V)1 is
a Model 465M manufac-
tured
by Tektronix, incorporated,
Beaverton,
Oregon.
b. Manual
Scope. The instructions
provided in
this
manual
are intended
to be performed
at organizational
or
intermediate level
maintenance
activities
using tools, test
equipment,
and
spare parts authorized
in their allowance
lists and supply
activities.
c.
Manual
Arrangement.
This manual
is separated into
eleven
sections
as follows:
(1
)
Section
I, Introduction
and General
Information.
Contains the
purpose, scope, and
arrangement
of the
manual
and
a
description
of
the instrument including
its
leading
particulars and
accessories.
(2)
Section II, Special
Tools and
Test Equipment.
Contains
listings
of tools, test equipment,
and
consumable
materials
needed
to maintain
the instrument.
(3)
Section
III,
Preparation for
Use and
Shipment.
Contains
instructions
for preparing
the instrument
for
initial use and
repackaging
for
shipment.
(4)
Section IV,
Operation
Instructions.
Contains
instrument
theory of
operation;
a description of
controls,
connectors,
and indicators;
special operating
instructions;
initial
turn-on and
adjustment
procedures;
normal oper-
ation
familiarization
procedures;
and
examples
of instru-
ment
applications.
(5)
Section
V, Maintenance
Instruction
s. Contains
procedures
to check out,
perform
routine
maintenance,
troubleshoot, repair,
test,
and
adjust the
instrument.
(6)
Section VI,
Diagrams.
Contains wiring
and sche-
matic
diagrams
with
associated
data referenced
in other
sections
of
the manual.
Also,
may
contain
some
illustra-
tions
to improve
operation and
maintenance of
the in-
strument.
(7)
Section VII,
I
ntroduction
to the Illustrated
Parts
Breakdown.
Contains
information
on how
to
use the il-
lustrated
parts breakdown
data in
Sections VIII
through
X.
(9)
Section
IX, Numerical
Index.
Contains
a
part
number to
figure and index
cross reference listing.
(10)
Section
X, Reference
Designation Index.
Con-
tains
a
reference
designator to figure and index, and part
number cross
reference listing.
(11)
Section
XI, Difference
Data Sheets. Provides
a
section for inserting information
about
different
models,
custom modifications, other accessories, etc., that may
not be provided as part
of
the
manual.
1-2.
USE
OF WARNING, CAUTION, AND NOTE
SYMBOLS. Symbols
are used throught the manual text
to
highlight
personnel safety
warnings, precautions
to
pre-
vent
damage
to
the instrument, and
special
notes. These
symbols
are as follows:
Personnel Safety
Warnings
)
CAUTION
^
Equipment
Damage
Precautions
NOTE
Special Notes
1-3.
GENERAL
INFORMATION
a.
Equipment Description.
The AN/USM-425(V)1 is a
solid
state, dual
channel,
100
megahertz bandwidth, de-
layed
sweep, general purpose
oscilloscope. Each vertical
channel has
ten calibrated deflection factors
from
5
milli-
volts/division to 5
volts/division selected in
a
1-2-5
se-
quence.
The horizontal
deflection
system has
calibrated
sweep rates
of
0.5
seconds/division
to
0.05 microseconds/
division in
22
steps. It also has delayed sweep rates of 50
milliseconds/division
to
0.05 microseconds/division
in
19
steps. A ten times magnifier
expands
each
horizontal sweep
rate
to a
maximum of 5
nanoseconds/division. An
X-Y
display
mode is provided through vertical mode and hori-
zontal sweep speed selection. The instrument with its de-
tachable
front
cover and
accessories is
shown in
Figure
1-0.
(8) Section
VIII,
Maintenance
Parts List.
Contains
Accessories Supplied. Figure
8-2
illustrates
and lists
the
illustrated
parts
breakdown
ilTustrations
and
parts
accessories that are shipped with
the
instrument and
descriptions. stored in its front cover.
1-1