Rohde & Schwarz Inc NV830X Benutzerhandbuch
Chapter 8
Service
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E-1
8
Harmonics Filter
In this transmitter family the harmonics filter is built into the RF line.
8.1
Replacing Harmonics Filter
Note
The harmonics filter is lacquered in order to reduce the surface temperature, but high tem-
peratures are nevertheless to be expected.
peratures are nevertheless to be expected.
8.1.1
Removing Harmonics Filter
Note
The harmonics filter is connected to the RF chain by means of two rigid line brackets. So
that the inner line of the lower rigid line (into the bandpass) stays fixed in place, the tension-
ing clamp of the lower rigid line bracket should be opened first.
that the inner line of the lower rigid line (into the bandpass) stays fixed in place, the tension-
ing clamp of the lower rigid line bracket should be opened first.
To remove the harmonics filter proceed as follows:
1. Open the tensioning clamp of the lower rigid line bracket on the rigid connection of the
combiner.
2. Open the tensioning clamp of the upper rigid line bracket using an open-end wrench
No. 7 or a Phillips screwdriver No. 2.
3. Pull the harmonics filter of the combiner rigid line down and to the right.
4. Pull the harmonics filter downward from the upper rigid line bracket.
WARNING!
Always make sure that the power supply is disconnected before commencing any service
work on the transmitter rack. This will prevent injury due to electric shock and avoid dam-
age to the instruments.
work on the transmitter rack. This will prevent injury due to electric shock and avoid dam-
age to the instruments.