Siemens AG SPB7-250.841.01.04.02 MAMMOMAT Novation DR
05.05 CS SD 24
Generator 59
Page 59 of 64
Medical Solutions
Fig. 36: Generator data
The "anode rotation frequency" value is ten times the rotation frequency of the last expo-
sure in Hz (Fig. 36 / p. 59).
Fig. 37: Tube power supply
The frequency of the rotating anode must be > 148 Hz. If this is not the case, it can be set
at the potentiometer "anode drive freq." (1/Fig. 37 / p. 59).
Additional requirements for replacing the tube power supply module:
Adjusting the grid voltage
1. Turn wing 1 toward the front, install the magnification table, and set a magnification of
1.8.
2. Set the digital multimeter to VDC and connect to cathode connections of the X-ray tube
(- to "h3", + to “G”). The document supplied with the X-ray tube contains the necessary
grid voltage values (= reference values).
3. Select Mo/Mo on the console.
4. Set the grid voltage for Mo/Mo to the reference value by adjusting the potentiometer
marked “Bias MO” on the left side of the tube power supply module.
5. Select W/Rh on the console.
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