Filament - Siemens MAMMOMAT Maintenance Instruction

6 Filament

PMF Anode current check
Before entering any calibration mode, it's necessary to select the manual mode and 40mAs for 0.3
mm focus or 13mAs for 0.1 mm focus.
In calibration mode, the following keys are active:
•
Focal spot selection
•
kV selection
•
filament current adjustment by mAs + / - push buttons.
With reference to the tube calibration report:
•
Set to ON DIP1 SW1 of PCB 01-170To access mAH current calibration
•
Set to ON DIP2 SW1 of PCB 01-170To access mAL current calibration
In the mAs window of the display, the following parameters will appear:
•
mAH or mAL, filament current If in Ampere;
•
selected mAs
•
after each exposure the expected anode current value and effective anode current in mA.
PMF Control LED
LED1 Bright in normal conditions.
LED3 Bright if small focus is selected
LED4 Bright if Filament is ON
LED5 Bright during x-ray exposure. Brightness is proportional to tube anode current.
More details can be found in Service Instruction SPB7-115.840.01....
MAMMOMAT Balance
Maintenance Instructions
4,710
mAH I
f
90,1
90 I
a
40
mAs
SPB7-115.831.01
Rev.01
A
mA
Page 14 of 22
05.04
6 Filament
Siemens AG
Medical Solutions