6 Filament
MAMMOMAT Balance
SPB7-115.831.01 Page 14 of 22
Siemens AG
Maintenance Instructions
Rev.01 05.04
Medical Solutions
6 Filament
PMF Anode current check
Before entering any calibration mode, it’s necessary to select the manual mode and 40
mAs
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
01-170
To access
mAH
current calibration
•
Set to ON
DIP2
SW1
of PCB
01-170
To 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….
mAH I
f
4,710
A
90 I
a
90,1
mA
mAs
40