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R&S FSP
Troubleshooting
1164.4556.82 3.83
E-1
Temperature Measurement on IF Filter
Normal action
Error and error cause
The
temperature
is measured, first. If the
temperature violates the permitted range from
0°
to 70°C, the following warning is output:
WARNING!
IF-FILTER: Operating Temperature xx °C -
out of range
Check the temperature data to plausibility.
The fan might be defective or the ventilation
slots might be covered.
If the temperature data indicated are not
reasonable, e.g., if the temperature of the
instrument is indicated to be 120° C, the
temperature sensor or the selftest may be
faulty.
If , in the following, the
first
operating voltage
(or all operating voltages under service level
1) is measured incorrectly, the selftest will
obviously be defective.
Channel Nominal
voltage
Designation,
name which occurs
in the error message
74
- 5 V
UREF-5
77 +2.5
V
UREF+2.5
76
+3.3 V
+3.3 V
73
+5 V
+5 V
72 +10.6
V
+10
V
71
-5 V
-5 V
70 -10.6
V
-10
V
75
+5 V
+5 VR
The IF filter board must be replaced in any
case, if an error message occurs which refers
to these operating voltages or the
temperature (if not plausible).
The voltage of the temperature sensor is
used for temperature compensation of the
filters. Thus, a faulty temperature sensor may
detune the filters such that subsequent errors
are likely to occur.
Содержание 1164.4391.03
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