HP 460A Operating Manual
HP Archive
This vintage Hewlett Packard document was preserved
and distributed by
www. hparchive.com
Please visit us on the web !
On-line curator: Glenn Robb
This document is for FREE distribution only!
INSTRUCTION
AND
OPERATING
MANUAL
FOR
MODEL
460A
WIDE
BAND
AMPLIFIER
Serial
1996
and
Above
..
HEWLETT-PACKARD
COMPANY
275
PAGE
MILL
ROAD,
PALO
ALTO,
CALIFORNIA,
U.S.A.
#460A004
General
Description
The
Model
460A
Wide
Band
Amplifier
is
designed
to
faithfully
am-
plify
extremely
short
pulses
without
objectionable
ringing
or
over-
shoot.
The
high
frequency
response
matches
the
Gaussian
curve.
A
gain
of
20
db
is
obtained
with
this
amplifier
0
Up
to
five
ampli-
fiers
may
be
cascaded
for
additional
amplification.
The
Model
460A
is
useful
asageneral
laboratory
amplifier,
to
increase
voltmeter
and
oscilloscope
sensitivity,
and
in
television
work.
Parts
Substitutions
Difficulties
in
procuring
some
of
the
parts
used
in
this
instrument
may
cause
the
electrical
or
physical
values
to
deviate
from
those
shown
in
this
instruction
manual.
These
substitutions
have
been
made
so
as
not
to
impair
the
performance
of
this
instrument
o
Whenever
replacement
of
any
of
these
parts
is
necessary,
either
the
substitute
value
or
the
original
value
may
be
used.
SPECIFICATIONS
FOR
c§j)
MODEL
460A
WIDE
BAND
AMPLIFIER
FREQUENCY
RESPONSE:
GAIN:
OUTPUT:
INPUT
IMPEDANCE:
NOISE
FACTOR:
DELAY
CHARACT
ERISTICS:
RISE
TIME:
POWER
SUPPLY:
SIZE:
WEIGHT:
High
Frequency
-
closely
matches
Gaussian
curve
when
operating
into
a
lOO-ohm
resistive
load.
3
db
point
is
140
mc.
Low
Frequency
-
when
operating
from
a
200-ohm
source
and
O.
1
~f
blocking
condenser.
frequency
response
off
3
db
at3kc
into
an
open
circuit
or
succeeding
amplifier.
When
operat-
ing
intoa200
-ohm
load,
off3db
at
100
kc.
With
c§j)410B
VTVM
-
when
used
with
c§j)
46A
-95D
Adapter.
response
i:1
db.
ZOO
KC
to
200
MC.
Approximately
ZO
db
into
ZOO-ohm
load.
Gain
control
has
range
of6db.
Five
amplIfiers
may
be
cascaded.
Approx.
8 v
peak
open
circuit.
Output
impedance,
300
ohms.
ZOO
ohms.
Less
than
10
db.
Approx.
.0
14~sec.
Approx.
.
00z6
~
sec.
(10%
to
90%
amplitude).
No
appreciable
over-
shoot.
115/Z30
v
±10%.
50/1000
CPSD
35
watts.
19"
relay
rack
panel.
5-1/4"
high;
6-3/4"
deep.
11
pounds.
i
SECTION
I
OPERATING
INSTRUCTIONS
1-1
INSPECTION
This
instrument
has
been
thoroughly
tested
and
inspected
before
being
shipped
and
is
ready
for
use
when
received.
After
the
instrument
is
unpacked
a
it
should
be
carefully
inspected
for
damage
received
in
transit.
If
any
shipping
damage
is
found
a
follow
the
procedure
outlined
in
the
"Claim
for
Damage
in
Ship-
ment"
page
at
the
back
of
this
instruction
book.
1-2
CONTROLS
AND
TERMINALS
ON
This
toggle
switch
controls
all
the
power
supplied
to
the
instru-
ment
from
the
powerline.
Q)
:>
0
.g
"d
s::
cd
-.J:)
0"0"-
....
....
cd
....
!-f
1-3
Q)
U)
I.!)
I.!)
-
0"-
-
N
....
-:t'
0
0
<
0
-.J:)
-:t'
GAIN
This
variable
resistor
controls
the
gain
of
the
amplifier.
FUSE
The
fuseholder
contains
a 006
ampere
cartridge
fuseo
The
fuse
may
be
replaced
by
unscrewing
the
fuseholder
cap
and
inserting
a
new
fuseo
Replacement
fuses
for
this
instrument
should
be
of
the
llslow
blow"
type
as
specified
in
the
Replaceable
Parts
Lista
INPUT.
OUTPUT
JACKS
AND
ACC
ESSORIES
The
input
and
output
jacks.
located
on
the
control
panel.
fit
special
connectors
and
cables
which
have
been
designed
for
use
with
Model
460A
because
it
is
not
possible
to
obtain
the
best
performance
with
this
type
of
device
if
standard
commercially
available
connectors
are
used
o
The
accessories
listed
below
are
not
supplied
with
the
instrument.
These
accessories
are
designed
to
solve
special
connection
problems
likely
to
be
encountered
in
the
use
of
the
Model
460A
o
The
acces-
sories
may
be
purchased
from
the
Hewlett-Packard
Companyo
cffp
MODEL
NO
o
46A-16A
DESCRIPTION
Patch
Cord
-
Special
200
ohm
cable
two
feet
in
length.
complete
with
two
No.
46A-
95B
Cable
Plugs.
for
inter-connection
of
two
amplifiers
in
cascade.
-1-
~
MODEL
NO.
46A-16B
DESCRIPT
ON
Patch
Cord
-
Same
as
No.
46A-16A
except
six
feet
in
length.
46A-95A
Panel
Jack-Special
low
capacita.nce
panel
jack
designed
for
ZOO
ohm
cable.
Mates
with
Nos.
46A-16A
and
46A-16B
Patch
Cords
or
No.
46A-95B
Cable
Plug.
Requires
1-1/8
inch
diameter
mounting
hole.
46A-95B
Cable
Plug
-
Low
capacitance
plug
de-
signed
for
use
with
ZOO
ohm
cable
o
Mates
with
No.
46A-95A
Panel
Jack
and
with
No.
46A-95E
Connector
Sleeve.
8lZ-5Z
Cable
Special
ZOO
ohm
cable
available
in
lengths
to
meet
customer
req"Girements.
The
input
circuit
of
the
Model
460A
isaterminated
transmission
line
with
a
characteristic
impedance
of
ZOO
ohms.
The
output
circuit
has
an
impedance
of
Z80
ohms
(resistive)o
The
load
impedance
determines
the
gain
of
the
amplifiero
Therefore,
it
is
not
necessary
to
match
the
load
to
the
output
of
the
amplifier
unless
the
gain
is
adversely
affected.
Shown
below
are
two
dia-
grams
for
connecting
a
matched
or
unmatched
load
to
the
Model
460A
using
a
ZOO
ohm
cable.
I-'
N
-
-.D
-
11l
11l
Adapter
for
connection
to
5XP
CRTo
50
Ohm
Adaptor
-
Provides
a
cyp~
N
con-
nection
for
coupling
a
50
ohm
transmission
line
to
the
input
ofaModel
460A
amp_i£ier~
Includes
a
terminating
resistor.
Connector
Sleeve
-
Provides
for
joining
two
Noo46A-95B
C3.ble
Plugs
in
order
to
interconnect
two
lengths
of
ZOO
ohm
cable
o
Adaptor
for
Model
410A/B
Voltmeter
Probe
-
Consists
ofabayonet
type
sleeve
with
which
a
Model
410A/B
Probe
may
be
directly
connected
to
the
output
of
a
Model
460A
Amplifier
o
Includes
the
proper
compensating
LC
components.
46A-95F
46A-95E
46A-95C
46A-95D
OPERATION
1-4
-Z
-
Loading...