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HP 654 A Series User Manual

HP 654 A Series
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Table
3-2.
Checking
the
Current
Functions
(continued)
Press
(Protect
1
OC
Indicates
the
overcurrent
protection
circuit
has
tripped,
(see
“Supplemental
Chziracteristics”
in
Chapter
1).
Press
(
■
*—)
Press
(Output
On/Off]
Meter
mode
Dis
annunciator
comes
on.
Press
fOCP]
You
have
disabled
the
overcurrent
protection
circuit.
The
OCP
anunciator
goes
off.
Press
1
Shift
f
ProtectV
You
have
cleared
the
OC
protection
circuit.
The
Prot
annunciator
goes
off.
Press
I
Output
On/Off
1
Dis
annunciator
goes
off
and
the
CC
annuniator
comes
on.
AKPS
shows
some
current.
Press
(Current
12
!
5
1
Enter)
26.000
•“IMPS
increases
to
maximum
output.
Press
^Output
On/Off)
Dis
annimciator
comes
on
^uld
AMPS
reading
drops
to
near
zero.
Turn
off
the
power
supply
and
remove
the
short
from
the
output
terminals.
*
[Shift]
key
is
the
unfabled
blue
key.
*“
Maximum
current
value
is
for
HP
6552A.
See
“Output
Ratings”
in
“PerfoiiTumce
Specifications”
of
Chapter
1
for
your
specific
model.
POWER-ON
CHECKOUT
1.
Connect
the
power
cord
to
the
power
source.
2.
Turn
the
front
panel
power
switch
to
ON
(1).
3.
Check
that
the
power
supply
fan
is
on
by
placing
your
hand
near
the
rear
grill
to
feel
the
air
flow.
You
may
also
be
able
to
hear
the
fan
operating.
The
power
supply
undergoes
a
self-test
when
you
turn
it
on.
If
the
test
is
normal,
the
following
sequence
appears
on
the
LCD:
1.
A
brief
star-burst
pattern
2.
PWR
ON
INIT
for
a
few
seconds
(Series
657xA
supplies
only).
3.
The
display
goes
into
the
meter
mode
with
the
Dis
annunciator
on
and
all
other
off.
“Meter
mode”
means
that
the
VOLTS
digits
indicate
the
output
voltage
and
the
AMPS
digits
indicate
the
output
current.
These
values
will
be
at
or
near
zero.
Note
If
the
power
supply
detects
an
error
during
self-test,
the
display
will
show
an
error
message.
Go
to
“In
Case
of
Trouble”
at
the
end
of
this
chapter.
4.
P
ress
[Outout
on/ofr)
once.
The
Dis
annunciator
will
go
off
and
the
CV
annunciator
will
go
on.
OUTPUT
CHECKOUT
Shifted
Keys
Some
of
the
front
panel
keys
perform
two
functions,
one
labled
in
black
and
the
other
in
blue.
You
access
the
blue
function
by
first
pressing
the
blue
(Shift]
key,
which
is
not
labeled.
When
the
Shift
annunciator
is
on,
you
will
know
you
have
access
to
the
key’s
shifted
(blue)
function.
Checkout
Procedures
Turn-On
Checkout
3-3

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HP 654 A Series Specifications

General IconGeneral
BrandHP
Model654 A Series
CategoryPower Supply
LanguageEnglish

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