HP 423A Service manual
HP423A
HP
8470A
423A
8470A
CRYSTAL
DETECTOR
HEWLETT
PACKARD
Printed:
JULY
1976
©
Hewlett
Packard
Co.
1976
HP423A
HP
8470A
Page
2
Model
423A/8470A
1.
GENERAL
INFORMATION
2.
This
manual
contains
operating
instructions
for
the
Hewlett-Packard
Model
423A
and
8470A
Crys¬
tal
Detectors.
Included
in
the
manual
is
the
inform¬
ation
required
to
install
and
test
the
crystal
detectors.
3.
On
the
rear
cover
of
this
manual,
below
the
manual
part
number,
is
a
“Microfiche”,
part
num¬
ber.
This
number
may
be
used
to
order
a
4
x
6-
inch
microfilm
transparency
of
the
manual.
4.
Specifications
5.
Instrument
specifications
are
listed
in
Table
1.
These
specifications
are
the
performance
standards,
or
limits
against
which
the
instrument
may
be
tested.
6.
Description
7.
The
Hewlett-Packard
Model
423A
and
8470A
Crystal
Detectors
are
5012
(nominal)
devices
de¬
signed
for
measurement
use
in
coaxial
systems.
The
instruments
convert
RF
power
levels
applied
to
the
50ft
input
connector
into
proportional
values
of
dc
voltage.
The
instruments
measure
relative
power
up
to
100
mW
and
have
a
BNC
female
connector
for
the
output
jack
which
allows
the
detected
out¬
put
to
be
connected
to
a
SWR
meter.
The
output
voltage
polarity
is
negative,
unless
Option
003
is
selected.
The
frequency
range
of
the
423A
is
10
MHz
to
12.4
GHz.
The
8470A’s
frequency
range
extends
from
10
MHz
to
18
GHz.
8.
Options
9.
The
423A
and
8470A
Crystal
Detectors
are
available
with
the
following
options
(see
Table
1
for
further
descriptions):
Option
001:
Matched
pair
of
detectors
Option
002:
Furnished
with
matched
load
re¬
sistor
(HP
11523A)
for
optimum
square
law
characteristics
Option
003:
Positive
polarity
output
Option
012:
Furnished
with
stainless
steel
type
N
male
connectors
(8470A
only).
Option
013:
Furnished
with
stainless
steel
type
N
female
connectors
(8470A
only).
10.
INSTALLATION
11.
Initial
Inspection
12.
Inspect
the
shipping
container
for
damage.
If
the
shipping
container
or
cushioning
material
is
damaged,
it
should
be
kept
until
the
contents
of
the
shipment
have
been
checked
for
completeness
and
the
instrument
has
been
checked
mechanically
and
electrically.
13.
The
procedures
for
checking
electrical
perfor¬
mance
are
given
under
PERFORMANCE
TESTS.
If
the
contents
are
incomplete,
if
there
is
mechanical
damage
or
defect,
or
if
the
instrument
does
not
pass
the
electrical
performance
test,
notify
the
nearest
Hewlett-Packard
office.
If
the
shipping
container
is
damaged,
or
the
cushioning
material
shows
signs
of
stress,
notify
the
carrier
as
well
as
the
Hewlett-
Packard
office.
Keep
the
shipping
materials
for
the
carrier’s
inspection.
The
HP
office
will
arrange
for
repair
or
replacement
at
HP’s
option
without
wait¬
ing
for
claim
settlement.
14.
Mating
Connectors
15.
The
8470A
(standard)
RF
input
connector
must
be
an
APC-7
type
connector.
The
mating
RF
input
connectors
used
with
the
423A
and
8470A
Option
012
must
be
Type
N
female
connec¬
tors
which
comply
with
U.S.
military
standard
MIL-C-39012.
The
mating
RF
input
connector
used
with
the
8470A
Option
013
must
be
Type
N
male
connector
which
complies
with
MIL-C-39012.
16.
Operating
Environment
17.
The
operating
environment
of
the
crystal
de¬
tectors
should
be
within
the
following
limitations:
a.
Temperature:
0°
to
+55°C
b.
Altitude:
<
4572
metres
(15,000
feet)
c.
Humidity:
<95%
relative.
18.
STORAGE
AND
SHIPMENT
19.
Environment.
The
instrument
should
be
stored
in
a
clean,
dry
environment.
The
following
environ¬
mental
limitations
apply
to
both
storage
and
shipment:
a.
Temperature:
—
20°C
to+55°C
b.
Altitude:
<7620
metres
(25,000
feet)
c.
Humidity:
<95%
relative.
Page
3
Model
423A/8470A
<sr>
Table
1.
Specifications
Frequency
Range:
423A:
10
MHz
to
12.4
GHz
847
0A:
10
MHz
to
18
GHz
NOTE
RF
may
leak
through
the
output
connector,
especially
below
1
GHz.
It
can
be
reduced,
if
objectionable,
with
a
suitable
low
pass
filter.
Frequency
Response:
1
423A:
±0.2
dB
over
any
octave
10
MHz
to
8
GHz;
±0.5
dB
10
MHz
to
12.4
GHz.
8470A:
±0.2
dB
over
any
octave
10
MHz
to
8GHz;
±0.5
dB
10
MHz
to
12.4
GHz;
±1.0
dB
10
MHz
to
18
GHz.
Maximum
Operating
input
Power:
100
mW,
peak
or
average.
Maximum
Short
Term
Input
Power:
100
mW
(typi¬
cal)
peak
or
average
for
<
1
minute.
Sensitivity
at
25°C:
High
Level:
<
0.35
mW
produces
100
mV
output.
Low
Level:
>0.4
mVdc//±W
CW.
Output
decreases
with
increasing
temperture.
Typically
0.015
dB/°C
from
0°C
to
55°C.
SWR:
423A
and
8470A:
10
MHz
to
4.5
GHz,
1.20;
4.5
GHz
to
7.0
GHz,
1.35;
7.0
GHz
to
12.4
GHz,
1.50.
8470A:
12.4
GHz
to
18.0
GHz,
1.70.
input
Impedance:
500
(nominal)
Output
Impedance:
<
15
ktt
shunted
by
10
pF.
Output
Polarity:
Negative
(refer
to
options
for
posi¬
tive
polarity
units).
Detector
Element:
Supplied
(refer
to
Table
2
for
re¬
placement
assemblies).
Bias:
Not
required.
Noise:
<200
gV
p-p,
with
CW
applied
to
produce
100
mVdc
output.
1
As
read
on
a
meter
calibrated
for
square-law
detectors
(such
as
HP
415E
SWR
Meter).
Options:
423A:
Option
001:
Matched
pair.
Frequency
response
characteristics
(exclusive
of
basic
sensitivity)
track
within
±0.2
dB
over
any
octave
from
10
MHz
to
8
GHz,
±0.3
dB
from
8
to
12.4
GHz.
Option
002:
Furnished
with
matched
load
resis¬
tor
(11523A)
for
optimum
square
law
character¬
istics
at
24°C
(75°F),
<
±0.5
dB
variation
from
square
law
over
a
range
of
at
least
30
dB
up
to
50
mV
peak
output
working
into
an
external
load
>75
kLL
Sensitivity
typically
>
0.1
mV/^uW
when
load
resistor
is
used.
Overall
length
144
mm
(4.5
in.).
Option
003:
Positive
polarity
output.
8470A:
Option
001:
Matched
pair.
Frequency
response
characteristics
(exclusive
of
basic
sensitivity)
track
within
±0.2
dB
over
any
octave
from
10
MHz
to
8
GHz,
±0.3
dB
from
8
to
12.4
GHz,
±0.6
dB
from
12.4
to
18
GHz.
Option
002:
Furnished
with
matched
load
resis¬
tor
(11523A)
for
optimum
square
law
character¬
istics
at
24°C
(75°F),
<
±0.5
dB
variation
from
square
law
over
a
range
of
at
least
30
dB
up
to
50
mV
peak
output
working
into
an
external
load
>75
kill.
Sensitivity
typically
>0.1
mV/jUW
when
load
resistor
is
used.
Overall
length
144
mm
(4.5
in.).
Option
003:
Positive
polarity
output.
Option
012:
Furnished
with
stainless
steel
type
N
male
connector.
Option
013:
Furnished
with
stainless
steel
type
N
female
connector.
General:
Weight:
Net
114
g
(4
oz.)
423A
and
8470A
Dimensions:
423A:
63
mm
long,
20
mm
diameter
(2.46
in.
long,
0.78
in.
diameter).
8470A:
64
mm
long,
19
mm
diameter
(2.50
in.
long,
0.75
in.
diameter).
Page
4
Model
423A/8470A
20.
Original
Packaging
.
Containers
and
materials
identical
to
those
used
in
factory
packaging
are
available
through
Hewlett-Packard
offices.
If
the
instrument
is
being
returned
to
Hewlett-Packard
for
servicing,
attach
a
tag
indicating
the
type
of
service
required,
return
address,
model
number,
and
serial
number.
Also,
mark
the
container
FRA¬
GILE
to
assure
careful
handling.
In
any
corres¬
pondence,
refer
to
the
instrument
by
model
num¬
ber
and
serial
number.
21.
OPERATION
CAUTION
Static
discharge
can
damage
the
detector
element.
A
100
pF
capacitor
(1.2
m[4
ft.]
of
coax
cable)
charged
to
14
volts
stores
0.1
erg,
the
maximum
pulse
rating
of
the
detector
element.
Connect
cables
to
test
equipment
and
discharge
the
cen¬
ter
conductor,
before
connecting
to
the
detector.
DO
NOT
NEEDLESSL
Y
HANDLE
DE¬
TECTOR
ELEMENT
USED
IN
CR
YS-
TAL
DETECTOR.
Static
electricity
which
builds
up
on
a
person,
especial¬
ly
on
a
cold
dry
day,
must
never
be
allowed
to
discharge
through
the
crys¬
tal
detector.
Avoid
exposed
leads
to
or
from
the
crystal
detector,
since
these
are
often
touched
accidentally.
22.
Operating
Information
23.
The
crystal
detector
can
be
used
as
a
demodu¬
lator
to
obtain
a
pulse
envelope
which
can
then
be
observed
on
an
oscilloscope.
It
can
also
be
used
as
a
general
purpose
detector.
24.
When
using
the
crystal
detector
with
an
oscil¬
loscope,
and
the
waveshapes
to
be
observed
have
rise
times
of
less
than
5
ps,
the
coaxial
cable
con¬
necting
oscilloscope
and
detector
should
be
as
short
as
possible
and
shunted
with
a
resistor.
Ideal¬
ly,
this
resistor
should
be
50S2
to
terminate
the
coaxial
cable
properly.
However,
with
5012
resis¬
tance,
the
output
video
pulse
may
be
too
small
to
drive
some
oscilloscopes.
Therefore,
the
cable
should
be
shunted
with
the
smallest
value
of
resis¬
tance
that
will
obtain
suitable
deflection
on
the
oscilloscope;
typically
the
value
will
lie
between
5012
and
2
k!2.
The
larger
the
resistance
the
more
degradation
of
rise
time.
25.
The
power
applied
to
the
detector
can
be
either
modulated
or
continuous
wave
(CW).
If
modulated
at
a
1000
Hz
rate,
an
SWR
meter
can
be
used
as
an
indicator.
For
CW
detection,
a
dc
milliammeter
or
millivoltmeter
can
be
used
as
the
indicator.
26.
Operator's
Checks
27.
Peak
Power
Measurement.
The
arrangement
of
equipment
for
peak
power
measurement
is
shown
in
Figure
1.
The
procedure
involves
calibration
of
an
oscilloscope
which,
in
turn,
is
used
to
calibrate
a
CW
generator.
The
output
of
the
calibrated
CW
generator
is
measure
with
a
power
meter;
the
peak
power
of
a
pulse
is
thereby
measured.
The
proce¬
dure
is
as
follows:
a.
Connect
equipment
as
shown
in
Figure
1,
step
a.
Observe
pulse
on
a
dc-coupled
oscilloscope.
Using
a
marking
pencil,
mark
on
the
graticule
the
base-to-peak
amplitude
of
the
pulse
envelope.
b.
Replace
the
pulse
source
with
a
CW
gen¬
erator.
While
observing
the
oscilloscope
trace,
ad¬
just
amplitude
of
CW
generator
output
to
make
de¬
tector’s
output
equal
to
that
of
pulse
generator,
as
indicated
by
markings
on
graticule
(step
a).
c.
Leave
CW
generator
at
setting
obtained
in
step
b.
Disconnect
detector
from
CW
generator.
STEP
(a)
Figure
1.
Peak
Power
Measurement
Model
423A/8470A
Connect
output
of
CW
generator
to
power
meter.
Measure
adjusted
levels
(set
in
step
b)
of
CW
gener¬
ator
output.
The
peak
power
of
the
pulse
envelope
observed
in
step
a
is
equal
to
the
output
power
of
the
CW
generator.
28.
Reflectometer
Application.
For
information
about
reflectometer
systems
and
measurements,
see
HP
Application
Note
Index,
copies
of
which
are
available
upon
request.
29.
Harmonic
Frequency
Comparison
Measure¬
ment
Application.
The
detector
can
be
used
as
a
mixer
in
harmonic-frequency
comparison
measure¬
ments
(see
HP
Application
Note
Index
for
further
information).
30.
PERFORMANCE
TESTS
31.
The
following
paragraphs
suggest
methods
to
use
for
testing
detector
specifications.
For
these
tests
refer
to
the
manuals
of
the
equipment
involved
for
operating
instructions.
32.
Frequency
Response
Test
a.
Using
signal
sources
covering
10
MHz
to
18
GHz
with
a
10
dB
isolating
attenuator
and
a
power
meter,
connect
power
sensor
to
attenuator.
Adjust
RF
power
level
to
—20
dBm
input
to
power
sensor.
b.
Without
changing
RF
power
level
of
sig¬
nal
source,
disconnect
power
sensor.
c.
Connect
detector
to
attenuator.
Measure
dc
voltage
output
from
detector
and
record
meas¬
urement.
d.
Change
frequency
of
signal
source
and
re¬
peat
steps
a
through
c.
e.
Since
the
detector
follows
a
square-law
response
at
this
power
level,
its
output
is
propor¬
tional
to
power
(P^g
=
10
log
V
Q
).
Total
variation
of
detector
readings
should
meet
specifications
(see
Table
1)
for
all
frequencies
of
interest
across
the
band.
NOTE
Multiple
mismatch
errors
caused
by
atten¬
uator
SWR,
power
meter
SWR,
and
detec¬
tor
SWR
should
be
taken
into
account
,
as
well
as
the
accuracy
of
the
indicator
used
to
measure
the
detector’s
output.
Page
5
33.
High
Level
Sensitivity
Test
a.
Using
signal
sources
covering
10
MHz
to
18
GHz
and
a
dc
voltmeter
or
oscilloscope
as
the
indicator,
connect
detector
to
signal
source.
Ad¬
just
RF
power
level
for
a
100
mV
detected
output
from
detector.
b.
Disconnect
detector
from
signal
source
and
measure
RF
output
level.
The
RF
output
level
should
be
<
0.35
mW.
c.
Repeat
steps
a
and
b
for
all
frequencies
of
interest
across
the
band.
34.
Low
Level
Sensitivity
Test
a.
Using
a
signal
source
(covering
100
MHz
to
1
GHz),
a
10
dB
attenuator,
and
a
power
meter,
connect
attenuator
to
signal
source
and
power
sen¬
sor
to
attenuator.
Adjust
RF
power
level
for
—20
dBm
output
from
attenuator.
Verify
the
am¬
bient
temperature.
b.
Disconnect
power
sensor
from
attenuator
and
connect
detector.
Measure
dc
voltage
output
from
detector.
The
output
should
be
>
4.0
mV
at
25°
C.
The
sensitivity
slope
is
typically
-0.015
dB/°C
from
0°C
to
+55°
C.
NOTE
Multiple
mismatch
errors
caused
by
atten¬
uator
SWR,
power
meter
SWR,
and
detec¬
tor
SWR
sould
be
taken
into
account,
as
well
as
accuracy
of
indicator
used
to
meas¬
ure
detector's
output.
35.
Match
Test
(SWR)
36.
To
verify
the
detector’s
SWR
specifications,
use
any
system
whose
measurement
accuracies
for
SWR
(residual
SWR)
are
known.
37.
ADJUSTMENTS
38.
The
detectors
have
no
internal
adjustments.
39.
REPLACEABLE
PARTS
40.
The
succeeding
paragraphs
contain
informa¬
tion
pertaining
to
replaceable
parts
(see
Table
2)
and
the
ordering
of
replaceable
parts
for
the
Models
423A,
8470A,
and
11523A.
41.
To
order
a
replacement
part,
address
order
or
inquiry
to
the
nearest
Hewlett-Packard
office
(see
Page
6
list
in
back
of
manual.)
Include
the
following
in¬
formation
for
each
part:
model
number,
Hewlett-
Packard
part
number,
and
description.
42.
SERVICE
43.
The
succeeding
paragraphs
give
instructions
for
repair
of
the
Model
423A
and
8470A
Crystal
Detectors
and
the
Option
002
Load
Resistor,
Model
11523A.
Additional
maintenance
informa¬
tion
can
be
obtained
from
the
local
Hewlett-Packard
office.
Part
numbers
for
replaceable
parts
are
given
in
Table
2.
44.
Detector
Element
Replacement
45.
The
detector
element
assembly
includes
only
a
detector
element,
unless
an
Option
002
is
ordered,
then
a
replacement
load
resistor
for
the
11523A
is
included.
The
resistor
is
to
load
the
diode
for
square-
law
operation.
The
special
detector
element
(see
Figure
4)
contained
in
the
detector
can
be
damaged
in
handling
,
removal,
or
installation
if
cer¬
tain
precautions
are
not
taken.
Then
hand¬
ling
precautions
which
follow
should
be
read
before
performance
of
any
operation
with
the
detector
element
when
it
is
out
of
either
the
housing
or
the
detector
ele¬
ment
shipping
container.
a.
Before
installing
diode
into
mount,
touch
exposed
metal
on
mount
with
your
hand
to
dis¬
charge
static
electricity.
Then
insert
diode
into
mount.
b.
When
handing
diode
to
another
person,
touch
hands
first
to
ensure
there
is
no
difference
in
static
electricity
potential
between
you.
c.
Ohmmeters
should
not
be
used
to
meas¬
ure
forward-
and
back-resistance
since
it
is
easy
to
damage
these
diodes.
The
difficulty
arises
because
of
the
ohmmeter’s
open-circuit
voltages
and
short-
circuit
currents.
40.
Replacing
Detector
Element
47.
P
arts
mentioned
in
the
following
procedure
are
identified
in
Figure
4.
a.
R
emove
connector
cap
from
body.
To
Model
423A/8470A
remove
connector
cap,
use
a
pair
of
gas
pliers
with
plastic
teeth
or
protect
body
with
heavy
paper
or
tape.
b.
Remove
old
detector
element,
capsule
spacer,
and
capacitive
washer,
and
discard
them.
c.
Install
the
new
capacitivie
washer,
capsule
spacer,
and
detector
element.
Install
the
washer
first,
the
spacer
with
its
polyiron
side
against
the
washer.
Finally,
install
the
detector
element
by
inserting
the
resistive
end
into
the
center
contact
inside
the
detector
body.
|
CAUTION
1
When
inserting
the
detector
element
,
do
not
force
the
tip
(resistive
end)
into
the
center
conductor
in
the
body
as
the
fin¬
gers
of
the
center
conductor
might
be
damaged
,
if
the
detector
element
is
not
centered.
d.
R
eplace
connector
cap
and
TIGHTEN
FIRMLY.
NOTE
The
Option
002
Detector
Element
Assem¬
bly
includes
a
detector
element
and
a
re¬
sistor.
The
resistor
is
for
use
in
the
Model
11523A
and
must
be
installed
to
match
it
to
the
detector.
48.
Replacement
of
Load
Resistor
(11523A)
Parts
49.
Parts
mentioned
in
the
following
procedure
are
identified
in
Figures
2
and
3.
50.
R
eplacing
Male
RNC
Connector
a.
Remove
male
BNC
connector
and
lock
washer
from
housing.
To
remove
BNC
connector,
use
a
3/8-inch
open-end
wrench
and
hold
the
hous¬
ing
either
in
a
vise
or
with
pliers.
Before
using
the
vise
or
pliers,
protect
the
housing
of
the
11523A
with
material
such
as
heavy
paper
or
tape
or
use
plastic
jaws
on
the
vise
or
pliers.
b.
Unsolder
resistor.
,
c.
S
older
resistor
to
new
BNC
connector.
Model
423A/847.QA
d.
Let
resistor
cool
and
then
check
resistance
from
male
BNC
pin
through
resistor;
resistance
meas-
sured
should
be
±10%
that
indicated
by
the
color
coding.
e.
Replace
lockwasher
and
male
BNC
con¬
nector.
51.
R
eplacing
Female
BNC
Connector
a.
Remove
female
BNC
connector.
To
re¬
move
or
install
BNC
connector,
use
a
BNC
wrench
or
use
a
male
BNC
connector
as
a
wrench
to
pre¬
vent
damage
to
the
connector.
b.
Unsolder
contact
spring.
c.
Prepare
replacement
female
BNC
connector:
(1)
Cut
center
conductor
lead
to
approx¬
imately
0.79
mm
(1/32
in.)
(2)
With
flat
file,
smooth
end
of
lead;
remove
burr
with
tweezers
or
simi¬
lar
metal
instrument.
d.
Slip
contact
spring
over
center
conductor
lead,
and
solder.
Use
solder
sparingly
or
it
will
creep
back
on
spring.
Solder
on
spring
destroys
its
usefulness
and
is
difficult
to
remove.
e.
L
et
contact
spring
cool
and
then
screw
connector
into
mount.
52.
R
eplacement
of
APC-7
Connector
Center
Contact
The
disassembly
and
assembly
instructions
for
the
APC-7
connecotr
is
covered
in
Figure
6.
53.
T
he
replacement
procedure
for
the
APC-7
connector
center
contact
is
covered
in
Figure
5.
55.
The
critical
dimensions
for
the
type
N
connec¬
tor
are
covered
in
Figure
7.
Page
8
Model
423A/8470A
Figure
5.
APC-7
Connector
Model
423A/8470A
Page
9
Table
2.
Replaceable
Parts,
Models
423A,
8470A,
and
11523A
Description
Stock
Wo.
423A
Assembly
Connector,
Female
BNC
1250-0251
Connector,
Cap
5020-0210
Connector
Assembly,
Female
BNC,
00423-600
including
contact
assembly
Body
Assembly,
423A
00423-601
Includes
the
following:
Type
N
Male
Connector
Outer
1250-0014
Conductor
Type
N
Male
Nut
Rubber
Gasket
1250-0015
Type
N
Nut
Retaining
Ring
1250-0016
Type
N
Male
Nut
1250-0918
Type
N
Male
Connector
Bead
5020-0207
Type
N
Male
Connector
Center
00423-201
Conductor
Body,
Crystal
Mount
00423-202
423A
Diode
Replacement
Assemblies
1
Single
Diode
Negative
Polarity
00423-802
Single
Diode
Positive
Polarity
(Opt
003)
00423-803
Single
Diode
Negative
Polarity
with
Matching
Load
Resistor
(Opt
002)
00423-800
Single
Diode
Positive
Polarity
with
00423-801
Matching
Load
Resistor
(Opt
002
and
003)
Matched
Pair
Diodes
Negative
Polarity
00423-605
(Opt
001)
Matched
Pair
Diodes
Positive
Polarity
00423-606
(Opt
001,
003)
Matched
Pair
Diodes
with
Load
Resis-
00423-603
tor
Negative
Polarity
(Opt
001,
002)
Matched
Pair
Diode
with
Load
Resis-
00423-604
tor
Positive
Polarity
(Opt
001,
002,
and
003)
11523A
Load
Resistor
Assembly
1
Connector,
Male
BNC
1250-0045
Connector,
Female
BNC
1250-0251
Spring,
Contact
5000-0234
Housing
5020-3215
8470A
APC-7
Connector
Assembly
Inner
Conductor
Contact
Mechanism
1250-0816
(assemblied
contact
and
outer
body)
Coupling
Sleeve
1250-0820
Inner
Conductor
Contact
1250-0907
Outer
Conductor
1250-1183
Coupling
Nut
1250-1465
Support
Bead
5040-0306
Description
8470A
APC-7
Connector
Assembly
(Cont'd)
Tools:
2
APC-7
Contact
Extractor
APC-7
Spanner
Wrench
Open-end
Wrench
847QA
Assembly
Resistor,
Tubular
Ring,
RF
Connector
(Opt
012)
Connector,
Female
BNC
Connector,
RF
APC-N
Female
(Opt
013)
Contact,
RF
Connector
Female
(Opt.
013)
Connector,
RF
APC-N
Male
(Opt
012)
Contact,
RF
Connector
Male
(Opt
012)
Nut,
RF
Connector
(Opt
012)
Washer,
Lock,
Internal
Contact,
Spring
Cap,
Connector
Insulator
Washer,
Compression
Washer,
Fiber
Body,
Crystal
Mount
Conductor,
Center
8470A
Diode
Replacement
Assemblies
1
Single
Diode
Negative
Polarity
Single
Diode
Positive
Polarity
(Opt
003)
Single
Diode
Negative
Polarity
with
Matching
Load
Resistor
(Opt
002)
Single
Diode
Positive
Polarity
with
Matching
Load
Resistor
(Opt
002,003)
Matched
Pair
Diodes
Negative
Polarity
(Opt
001)
Matched
Pair
Diodes
Positive
Polarity
(Opt
001,
003)
Matched
Pair
Diodes
with
Load
Resis¬
tor
Negative
Polarity
(Opt
001,
002)
Matched
Pair
Diode
with
Load
Resistor
Positive
Polarity
(Opt
001, 002,
and
003)
Stock
Wo.
5060-0236
5060-0237
8710-0877
0727-1033
1250-0016
1250-0251
1250-0914
1250-0915
1250-0916
1250-0917
1250-0918
2190-0016
5000-0234
5020-0210
5040-0306
08470-0001
08470-0002
08470-2000
08470-2001
08470-6001
08470-6002
08470-6003
08470-6004
08470-6005
08470-6006
08470-6007
08470-6008
Refer
to
Table
1
for
description
of
options.
'Part
of
HP
Model
11591A
APC-7
Connector
Tool
Kit.
Model
423A/8470A
USE
To
Connect:
1.
On
one
connector,
retract
the
coupling
sleeve
by
turning
the
coupling
nut
counterclockwise
until
the
sleeve
and
nut
disengage.
2.
On
the
other
connector,
fully
extend
the
coupling
sleeve
by
turning
the
coupling
nut
clockwise.
To
engage
coupling
sleeve
and
coupling
nut
when
the
sleeve
is
fully
retracted,
press
back
lightly
on
the
nut
while
turning
it
clockwise.
3.
Push
the
connectors
firmly
together,
and
thread
the
coupling
nut
of
the
connector
with
retracted
sleeve
over
the
extended
sleeve.
4.
Close
the
gap
between
coupling
nuts
with
the
nut
on
the
extended-sleeve
connector.
CARE
1.
K
eep
contacting
surfaces
smooth
and
clean.
Irreg¬
ularities
and
foreign
particles
can
degrade
electrical
performance.
COUPLING
NUT
INNER
CONDUCTOR
CONTACT
COUPLING
SLEEVE
To
Disconnect:
1.
Loosen
the
coupling
nut
of
the
connector
showing
the
wider
gold
band.
WIDER
BAND
2.
I
MPORTANT:
Part
the
connectors
carefully
to
pre¬
vent
striking
the
inner
conductor
contact.
2.
Protect
the
contacting
surfaces
when
the
connector
is
not
in
use
by
leaving
the
coupling
sleeve
extended.
3.
Use
lintless
material
and/or
firm-bristled
brush
such
as
a
tooth
brush
for
cleaning.
If
a
cleaning
fluid
is
needed
use
isopropyl
alcohol.
IMPORTANT:
Do
not
use
aromatic
or
chlorinated
hydrocarbons,
es¬
ters,
ethers,
terpenes,
higher
alcohols,
ketones,
or
ether-alcohols
such
as
benzene,
toluene,
turpentine,
dioxane,
gasoline,
cellosolve
acetate,
or
carbon
tetrachloride.
Keep
exposure
of
the
connector
parts
to
both
the
cleaning
fluid
and
its
vapors
as
brief
as
possible.
Figure
6.
AFC-7
Connectors
Model
423A/8470A
Hewlett-Packard
Company
certifies
that
this
product
met
its
published
specifications
at
the
time
of
shipment
from
the
factory.
Hewlett-Packard
further
certifies
that
its
calibration
measurements
are
traceable
to
the
United
States
National
Bureau
of
Standards,
to
the
extent
allowed
by
the
Bureau's
calibration
facility,
and
to
the
calibration
facilities
of
other
International
Standards
Organization
members.
This
Hewlett-Packard
instrument
product
is
warranted
against
defects
in
material
and
workmanship
for
a
period
of
one
year
from
date
of
shipment.
During
the
warranty
period,
Hewlett-Packard
Company
will,
at
its
option,
either
repair
or
replace
products
which
prove
to
be
defective.
For
warranty
service
or
repair,
this
product
must
be
returned
to
a
service
facility
designated
by
HP.
Buyer
shall
prepay
shipping
charges
to
HP
and
HP
shall
pay
shipping
charges
to
return
the
product
to
Buyer.
However,
Buyer
shall
pay
all
shipping
charges,
duties,
and
taxes
for
products
returned
to
HP
from
another
country,
HP
warrants
that
its
software
and
firmware
designated
by
HP
for
use
with
an
instrument
will
execute
its
programming
instructions
when
properly
installed
on
that
instrument.
HP
does
not
warrant
that
the
operation
of
the
instrument,
or
software,
or
firmware
will
be
uninterrupted
or
error
free.
LIMITATION
OF
WARRANTY
The
foregoing
warranty
shall
not
apply
to
defects
resulting
from
improper
or
inadequate
maintenance
by
Buyer,
Buyer-supplied
software
or
interfacing,
unauthorized
modification
or
misuse,
operation
outside
of
the
environmental
specifications
for
the
product,
or
improper
site
preparation
or
maintenance.
NO
OTHER
WARRANTY
IS
EXPRESSED
OR
IMPLIED.
HP
SPECIFICALLY
DISCLAIMS
THE
IMPLIED
WARRANTIES
OF
MERCHANTABILITY
AND
FITNESS
FOR
A
PARTICULAR
PURPOSE.
THE
REMEDIES
PROVIDED
HEREIN
ARE
BUYER’S
SOLE
AND
EXCLUSIVE
REMEDIES.
HP
SHALL
NOT
BE
LIABLE
FOR
ANY
DIRECT,
INDIRECT,
SPECIAL,
INCIDENTAL,
OR
CONSEQUENTIAL
DAMAGES,
WHETHER
BASED
ON
CONTRACT,
TORT,
OR
ANY
OTHER
LEGAL
THEORY.
Product
maintenance
agreements
and
other
customer
assistance
agreements
are
available
for
Hewlett-Packard
products.
To
obtain
servicing
information,
contact
the
nearest
Hewlett-Packard
Sales
and
Service
Office
in
HP
Catalog,
or
contact
the
nearest
regional
office
listed
below.
UNITED
STATES
NO.
CALIFORNIA
(San
Francisco
Area)
333
Logue
Ave.
Ml.
View,
CA
34043
SO.
CALIFORNIA
(Los
Angeles
Area)
5400
West
Rosecrans
Blvd.
Lawndale,
CA
90260
GEORGIA
450
Interstate
N.
Parkway
Atlanta,
GA
30348
ILLINOIS
5201
Tollview
Dr.
Rolling
Meadows,
IL
60008
NEW
JERSEY
W.
120
Century
Rd.
Paramue,
NJ
07652
AUSTRALIA
Hewlett-Packard
Australia
Ltd.
31-41
Joseph
Street
Blackburn,
Victoria
3130
Hewlett-Packard
(Canada)
Ltd.
6877
Goreway
Drive
Mississauga,
Ontario
Canada
1.4
V
1M8
ITALY
Hewlett-Packard
Italiana
S.p.A.
Via
G.
Di
Vittorio,
9
20063
Corn
unco
Sul
Naviglio
(MI)
FRANCE
Hewlett-Packard
France
Quartier
de
Courtaboeuf
Boite
Postale
No.
6
F-91401
Orsay
Cedex
GERMAN
FEDERAL
REPUBLIC
Hewlett-Packard
GmbH
Vertriebszentraie
Frankfurt
Bernerstrasse
117
Postfach
560
140
D-6000
Frankfurt
56
NETHERLANDS
Hewlett-Packard
Benelux
N.V.
Van
Heuven
Doedhartlaan
121
P.O.
Box
667
NL-Amstelveen
1134
UNITED
KINGDOM
Hewlett-Packard
Ltd.
King
Street
Lane
GB-Winnersh.
Wokingham
Berks,
RGII
5AR
AFRICA.
ASIA,
CENTRAL
AND
SOUTH
AMERICA
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Intercontinental
3200
Hillview
Avenue
Palo
Alto,
CA
94304
Manual
Part
Number:
00423-90019
Microfiche
Part
Number:
00423-90021
HEWLETT
PACKARD
Printed
in
U.S.A.
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