Troubleshooting
0.5
V/GHz Output
Errors
Error
Group
Description
6
=
2
F
ailure
at 1.0
GHz
6
=
8
F
ailure
at
3.0
GHz
6
=20
F
ailure at
6.0 GHz
6
=
80
F
ailure
at
9.0
GHz
6
=
200
F
ailure
at
12.0
GHz
6
=800
F
ailure at
15.0 GHz
6
=
2000
F
ailure
at
18.0
GHz
6
=
8000
F
ailure
at
20.0
GHz
7
=
2
F
ailure
at
0.01 GHz
1.
Connect
a
voltmeter
to
pin 5
of J1
on the
microprocessor assembly
(A3)
(connect
the
voltmeter
ground
lead
to
A3TP4).
2.
Set
the
synthesizer
output
frequency
to
the
frequency
specied
in
the
error
message
(if
more
than
one
frequency
point
failed,
set
the
output
frequency
to
the
lowest
frequency
specied).
3.
Verify
that the
voltage
at
J1
is
within
the
tolerance
shown
in
the
following
table
.
Frequency V
oltage
1.0
GHz
0.5
V
6
0.50 V
3.0 GHz 1.5 V
6
0.50
V
6.0
GHz
3.0
V
6
0.50
V
9.0
GHz
4.5
V
6
0.50
V
12.0
GHz
6.0
V
6
0.50
V
15.0
GHz
7.5
V
6
0.50
V
18.0
GHz
9.0
V
6
0.50
V
20.0
GHz
10
V
6
0.50
V
0.01
GHz
5
mV
6
0.5 V
If
the
voltage
is within
tolerance,
check the
continuity of
W8
between
J1
pin
5
and
the
0.5V/GHz
output connector
and replace
it if
necessary.
If the
voltage is
out of
tolerance
,
continue
with
the
next
step
.
4. P
erform the adjustment procedure \0.5 V/GHz Output A
djustment" in the Calibration Guide
.
If the 0.5 V/GHz output cannot be adjusted using the procedure or the self test still fails
,
replace the microprocessor assembly
. If it can be adjusted successfully
, rerun the self test to
ensure
that the 0.5 V/GHz output is functioning at all tested frequencies
.
1-10 Troubleshooting
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