HP 5245L - MALFUNCTION AT TURN ON; MALFUNCTION DURING SELF CHECK; MALFUNCTION DURING OPERATION

Section
VI
Paragraphs
6-34
to 6-37
6-34.
MALFUNCTION
DURING
SELF
C
H E
C
K.
If
counter
malfunctions
in
some,
but
not
all,
check
func-
tions,
see Table
6-8
for
probable
cause.
If
counter
will
not
self-check
for
any
function,
see
Trouble-
shooting
"Tree, "
Table
6-7.
6-35.
MALFUNCTION
DURING
OPERATION.
If
the
counter
will
turn
on,
but malfunctions
when
operation
is
attempted,
switch
to Self
Check
for
the function
and
time
base
desired.
If
Counter
will
Self
Check
but
will
not
function
with
an
external
signal,
check
setting
of
SENSITIVITY
and LEVEL
controls,
input
signal
level,
and
connections
to
counter.
Model
5245L
6-36.
If
counter
will
function
in FREQUENCy
mode
but
not
in PERIOD
(betow
1
MHz)
check
control
gate
b
(A21
cR5,
cR11).
If
counter
will function
in
pERIoD
but
not in FREQUENcY,
check
control
gate
z
(AzlcR3,
CRg).
rf
counter
malfunctions
in
both
pERIoD
and
FREQUENCY,
but
self
checks
in
both functions,
check
input
attenuator
and
input
amplifier.
6-37.
If
counter
malfunctions
when
operation
is
at-
tempted
and
fails
to
self-check
in
thefunctiondesired
(see
Paragraph
6-34).
213
1,
2.
3.
4.
5.
Turn
SAMPLE
RATE
contror
cloclnvise
from
POWER
OFF
position
to
turn
counter
on.
Set
SENSITIVITY
switch
to
CHECK.
Set
LEVEL
control
to PRESET.
Set
FUNCTION
switch
to FREeUENCY.
see
table
below
for
proper
display
(r
r count)
for
each
position
of
TIME
BASE
switch.
6. Set FUNCTION
switch
to
MAITUAL
START.
Counter
should
count
continuously
at fre-
quency
selected
on TIME
BASE
switch.
set
FUNCTION
switchto
1
PERIOD
AVERAGE.
See
table
below
for
proper
display
(r1
count)
for
each
PERIOD
AVERAGE position
of
the
'l .
8.
TIME
BASE
1ps
10
i/
s
.1ms
1ms
10
ms
.Ls
1s
10
s
DISPLAY
00000010.
MHz
0000010.
0 MHz
000010.
00 MHz
00010000.
kHz
0010000.
0
kHz
010000.00
kHz
10000.
000
kH.z
0000.
0000
kHz
FUNCTION
switch.
PERIOD
AVERAGE
DISPLAY
00000001
000000
1
0
00000
1
00
0000
1
000
0001
0000
00
1
00000
1
10
100
1K
10K
100K
4,6,7
Figure
6-1.
Self
Check
02349-
1
o5245-8-tl
6-4