Setup Manual

Device View Description
R&S
®
Tx9
55Operating Manual 2109.9110.02 ─ 07
Name Description Value range Access right
Reflection Indicates whether the reflection at the RF output is becoming too great.
In this case, the antenna as well as the link between the amplifiers and
the antenna via the combiners and output stage switches (if present)
must be checked.
The occurrence of reflection is stored in a nonvolatile memory. After
the reason for the reflection has been rectified, this message must be
reset manually by pressing the "Reset Faults Transmitter" button or
"Reset Faults System" button.
No, Yes (warn-
ing)
Read only
RF Power Fail Indicates that the output power of the amplifier is more than 3 dB below
the nominal value.
No, Yes (fault) Read only
Temp. Fail Indicates that the amplifier has overheated internally.
The shut‑off taps for the coolant must be checked. They must be open.
The occurrence of this message is stored in a nonvolatile memory.
After the reason for the overheating has been rectified, this message
must be reset manually by pressing the "Reset Faults Transmitter" but-
ton or "Reset Faults System" button.
No, Yes (fault) Read only
Transistor Fail Indicates that one or more driver or power transistors are defective.
NOTE: Only personnel with the relevant special service training are
permitted to change the transistors.
No, Yes Read only
BIAS Fail Indicates a fault if the quiescent current of one or more transistors can-
not be adjusted.
●
"No Error": Automatic quiescent current adjustment has been per-
formed properly.
●
Abort Adjust: Adjustment has been aborted because a constant
temperature has not settled in the amplifier. In this case, adjust-
ment should be started again immediately after the fault has
occurred.
●
"Error on PA On" or "Adjust Error": There is a technical fault in the
amplifier; the amplifier should be replaced.
No Error, Abort
Adjust, Error on
PA On, Adjust
Error
Read only
Amplifier Temp. Indicates the temperature of the amplifier. The amplifier should only be
switched on at temperatures above 0 °C.
‒30 °C to 120 °C
Read only
Frequency Fail This fault occurs if the tunit (tuning unit) used in the amplifier is not suit-
able for the RF of the exciter. The tunit is a plug-in module and is on
the top side of the amplifier. Please check that the used tunit is suitable
for the frequency which is set in the Output menu of the exciter, and
whether it has been installed in the amplifier in the "Doherty" or "Broad-
band" position corresponding to the setting in the "Basic Config" menu.
No, Yes (fault) Read only
Transmitter