IPC-TM-650 EN 2022 试验方法--.pdf - 第802页

Figure 1 Right Angle Connector Fixture (Suggested) Figure 2 Parallel Connector Fixture (S uggested) IPC-TM-650 Page 2 of 6 Number 3.12 Subject Vibration, Connectors Date 7/75 Revision A Fixture may be multiple type I PC-…

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Sinusoidal
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Page 1 of 6
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ASSOCIATION
CONNECTING
/
ELECTRONICS
INDUSTRIES
2215
Sanders
Road
Northbrook,
IL
60062-6135
IPC-TM-650
TEST
METHODS
MANUAL
1
.0
Scope
1
.1
To
determine
the
effect
on
the
connector
of
the
stresses
produced
by
mechanical
vibration
within
the
predominant
fre¬
quency
ranges
and
of
amplitudes
that
may
be
encountered
during
field
service;
two
input
vibration
types
are
provided:
—
Used
to
determine
critical
frequencies,
modes
of
vibration,
and
other
data
necessary
for
planning
protective
steps
against
the
effects
of
undue
vibration.
The
simple
har¬
monic
motion
provided
by
this
method
is
not
representative
of
most
vibration
encountered
during
field
service.
—
Used
to
provide
a
closer
approximation
to
the
complex,
non-periodic
vibration
encountered
during
field
ser¬
vice.
2
.0
Reference
Documents
2.1
Information
in
this
section
is
intended
to
parallel
the
test
method
described
in
EIA-RS-364/TP-28.
3
.0
Test
Specimen
3.1
A
connector
(plug
and
receptacle)
complete
with
appli¬
cable
guide,
keying,
and
engaging
hardware
or
a
card
-edge
receptacle
and
mating
nominal-thickness
printed
circuit
board.
3.2
Mounting
and
Termination
3.2.1
Right
Angle,
Two-Piece
Connector
The
receptacle
shall
be
mounted
and
terminated
normally
during
this
test;
receptacles
designed
for
mounting
on
non-rigid
bases
(e.g.,
motherboards,
metal-plate
back
panels,
etc.)
shall
be
mounted
on
the
smallest
section
of
such
a
base
that
will
accommodate
the
test
specimen.
The
plug
shall
be
termi¬
nated
normally
during
this
test
and
shall
be
mounted
on
a
nominal-thickness
printed
circuit
board
extending
the
full
width
of
the
plug;
the
board
shall
extend
a
minimum
of
four
inches
from
the
receptacle
when
the
connector
is
mated.
3.2.2
Card-Edge
Receptacle
The
receptacle
shall
be
mounted
and
terminated
normally
during
this
test
(see
3.2.1
).
The
mating
printed
circuit
board
shall
extend
the
full
width
of
the
receptacle
and
shall
extend
a
minimum
of
four
inches
from
the
receptacle
when
mated.
Number
3.12
Subject
Vibration,
Connectors
Date
7/75
Revision
A
Originating
Task
Group
N/A
3.2.3
Parallel,
Two-Piece
Connector
The
receptacle
and
plug
shall
be
terminated
normally
during
this
test;
both
com¬
ponents
shall
be
mounted
on
nominal-thickness
printed
circuit
boards
extending
the
full
width
of
each.
The
printed
circuit
boards
shall
extend
a
minimum
of
four
inches
from
each
com¬
ponent
when
the
connector
is
mated.
3.3
Fixturing
3.3.1
Right
Angle
Connector
The
test
specimen
shall
be
held
in
an
adequate
resonant
free
fixture.
(Figure
1
,
Reference
example.)
3.3.2
Parallel
Connector
The
test
specimen
shall
be
held
in
an
adequate
resonant
free
fixture.
(Figure
2,
Reference
example.)
3.4
The
connector
shall
be
wired
(or
printed
circuit
boards
designed)
such
that
a
continuous
electrical
circuit
(comprising
all
contacts
in
series)
is
formed
when
the
plug
(or
board)
and
receptacle
are
mated.
4
.0
Apparatus
4.1
An
electrodynamics
vibration
system
and
associated
instrumentation
capable
of
producing
the
vibration
indicated
in
Table
1
and
Figures
3
and
4
as
specified
in
the
individual
con¬
nector
specification.
The
system
shall
be
capable
of
maintain¬
ing
the
vibratory
input
within
the
following
tolerances:
Displacement
-
土
1
0%
Acceleration
-
±
1
0%
Power
Spectral
Density
-
土
3.0
DB
(50
Hz
maximum
filter
bandwidth)
Frequency
-
±
2%
4.2
A
circuit
monitor
capable
of
supplying
a
continuous
cur¬
rent
of
1
00
milliamperes
and
of
detecting
discontinuities
in
this
current
greater
than
1
microsecond.
5
.0
Procedure
5.1
Calibration
5.1.1
The
vibration
system
shall
be
set
up
to
provide
the
sinusoidal
or
random
vibratory
input
in
accordance
with
Figure 1 Right Angle Connector Fixture (Suggested)
Figure 2 Parallel Connector Fixture (Suggested)
IPC-TM-650
Page 2 of 6
Number
3.12
Subject
Vibration,
Connectors
Date
7/75
Revision
A
Fixture
may
be
multiple
type
I
PC-3-1
2-a
FIXTURE
MAY
BE
A
MULTIPLE
TYPE
IPC-3-12-2
Table 1 Test Conditions
Test
Condition
Peak Acceleration
(Gravity Units)
Frequency
Range
Approx. Traverse
Time
1
Traverses
Per Axis
Duration
Per Axis
IPC-TM-650
Page 3 of 6
Number
3.12
Subject
Vibration,
Connectors
Date
7/75
Revision
A
Table
1
and
Figure
3
or
4
as
specified
in
the
individual
con¬
nector
specification;
if
no
test
is
specified,
Test
Condition
D
shall
apply.
5.1.2
The
fixtured
test
sample
or
a
suitable
dummy
load
shall
be
mounted
on
the
vibration
exciter
during
the
calibration
procedure.
Any
dummy
load
shall
have
the
mass
and
center
of
gravity
as
that
of
the
test
sample
and
shall
be
fixtured
in
a
similar
manner
(a
reject
connector
provides
an
ideal
dummy
load).
5.1.3
The
control
transducer
shall
be
mounted
on
the
test
fixture
immediately
adjacent
to
the
test
specimen
or
dummy
load.
The
displacement-acceleration
curve
of
the
sinusoidal
input
or
the
equalized
random
input
shall
fall
within,
the
speci¬
fied
tolerances.
5.2
Sinusoidal
Vibration
Test
5.2.1
The
dummy
load
shall
be
replaced
with
the
actual
test
sample.
5.2.2
The
test
sample
shall
be
connected
to
the
discontinu¬
ity
monitor
and
a
minimum
current
of
100
milliamperes
shall
be
established
in
the
series
circuit
comprising
all
contacts
of
the
test
sample.
5.2.3
The
test
sample
shall
be
subjected
to
the
sinusoidal
test
condition
specified
in
the
individual
connector
specifica¬
tion;
the
following
details
shall
apply:
A.
Amplitude
—
The
test
sample
shall
be
subject
to
simple
harmonic
motion
at
an
amplitude
of
0.06
inch
double
amplitude
(peak-to-peak
displacement)
or
the
maximum
acceleration
specified
in
Table
1
,
whichever
is
less.
B.
Frequency
Range
—
The
vibration
frequency
shall
be
var¬
ied
logarithmically
between
the
approximate
limits
speci¬
fied
in
Table
1
;
see
6.2
for
alternate
method.
C.
Range
T
raverse
Time
and
Duration
—
The
entire
fre¬
quency
range
shall
be
traversed
in
a
time
as
specified
in
Table
1
.
The
traverse
(in
either
direction)
shall
be
per¬
formed
the
indicated
number
of
times
along
each
of
three
(3)
orthogonal
axes
for
at
least
the
indicated
total
vibration
period
per
axis.
If
the
procedure
of
Test
Condition
A
is
used
for
the
10
to
55Hz
band
of
Test
Conditions
B,
C
or
E,
the
duration
of
this
portion
shall
be
the
same
as
the
duration
for
this
band
using
logarithmic
cycling
at
the
rate
specified
for
Test
Conditions
B,
C
or
E
(approximately
1-1/3
hours
along
each
of
3
orthogonal
axes).
5.3
Random
Vibration
Test
5.3.1
The
dummy
load
shall
be
replaced
with
the
actual
test
sample.
5.3.2
The
test
sample
shall
be
connected
to
the
discontinu¬
ity
monitor
and
a
minimum
current
of
100
milliamperes
shall
be
established
in
the
series
circuit
comprising
all
contacts
of
the
test
sample.
A
10
5
to
55
Hz
0.5
min.
240
2
hrs.
B
10
10
to
500
Hz
7.5
min.
24
3
hrs
C
15
10
to
2000
Hz
10
min.
24
4
hrs.
d2/3
10
55
to
2000
Hz
40
min.
1
40
min.
E
20
10
to
2000
Hz
10
min.
24
4
hrs.
F
10.94
10
to
2000
Hz
N/A
N/A
15
min.
1
Traverse
time
is
that
time
to
go
from
the
lower
frequency
to
the
higher
frequency,
or
vice
versa.
2Test
Condition
D
shall
be
preceded
by
vibration
tests
per
Test
Condition
A.
3Test
Condition
D
is
intended
to
isolate
resonant
frequencies.
If
resonance
is
detected,
the
test
sample
shall
be
vibrated
at
each
critical
resonant
frequency
for
5
minutes;
critical
resonance
is
defined
as
a
point
on
the
test
sample
observed
to
have
a
maximum
amplitude
(or
acceleration)
more
than
twice
that
of
the
controlled
input.
40verall
root-mean-square
(RMS)
acceleration.