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2.
Troubleshoot
the
A50
DC-DC
Converter
Figure
5-9.
A50
DC-DC
Converter
Troubleshooting
Setup
a.
Turn
the
analyzer
power
o.
b.
Disconnect
cables
from
the
A50J2
and
A50J3.
The
connector
locations
are
shown
in
Figure
5-9
c.
Connect
the
pulse
generator
to
the
A50J2
as
shown
in
Figure
5-9.
The
pulse
generator
is
used
to
feed
the
substitute
of
the
F
AN
LOCK
signal
to
the
A50
DC-DC
converter
.
This
purposes
not
to
shut
down
the
A50
DC-DC
converter
.
d.
Turn
the
pulse
generator
power
on.
Set
the
controls
as
follows:
W
ave
F
orm
Square
Frequency
Approximately
30
Hz
Amplitude
+7.8
V
e.
Connect
a
resister
(appoximately
680ohms
,
125mW)
between
the
A50J2
pin
5
(+7.8
V)
and
pin
4(GND)
as
shown
in
Figure
5-9.
f.
Turn
the
analyzer
power
on.
g.
Measure
all
power
supply
voltages
on
A50J2
and
A50J3
using
a
voltmeter
with
a
small
probe
.
See
the
T
able
5-1
for
power
lines
,
connector
pins
,
and
limits
.
P
ower
Supply
T
roubleshooting
5-13
Содержание 4352B
Страница 11: ......
Страница 31: ......
Страница 73: ......
Страница 80: ...Figure 3 4 List Box Menu Adjustments and Correction Constants 3 7 ...
Страница 82: ...Figure 3 6 Reference Frequency Adjustment Location Adjustments and Correction Constants 3 9 ...
Страница 85: ...Figure 3 9 Third IF AMP GAIN Adjustment Location 3 12 Adjustments and Correction Constants ...
Страница 103: ...Figure 4 1 Troubleshooting Organization 4 2 Overall T roubleshooting ...
Страница 113: ......
Страница 130: ...Figure 5 11 Power Supply Block Diagram 1 Power Supply T roubleshooting 5 17 ...
Страница 131: ...Figure 5 12 Power Supply Block Diagram 2 5 18 Power Supply T roubleshooting ...
Страница 132: ...Figure 5 13 Power Supply Block Diagram 3 Power Supply T roubleshooting 5 19 ...
Страница 133: ......
Страница 135: ...Figure 6 1 Digital Control Group Simpli ed Block Diagram 6 2 Digital Control T roubleshooting ...
Страница 146: ...Figure 7 2 Source Group Troubleshooting Flow Source Group T roubleshooting 7 3 ...
Страница 154: ...Figure 8 2 Receiver Group Troubleshooting Flow Receiver Group T roubleshooting 8 3 ...
Страница 198: ...Figure 10 1 Power Supply Functional Group Simpli ed Block Diagram Theory of Operation 10 3 ...
Страница 203: ...Figure 10 3 Digital Control Group Simpli ed Block Diagram 10 8 Theory of Operation ...
Страница 269: ......
Страница 272: ...Figure B 1 Power Cable Supplied Power Requirement B 3 ...
Страница 273: ......
Страница 293: ...Error Messages Numerical Order 0400 Query error 0410 Query INTERRUPTED 0420 Query UNTERMINATED Messages 20 ...