MAMMOMAT 3000 Modular
Register 5
SPB7-230.092.11
Page 4 of 8
Siemens-Elema AB
Service
Rev. 01
04.98
SPS-UD
Solna, Sweden
3 - 4
Installation
Panel programming
3
1.
Reprogram the fourth fixed program according to the procedure described in the
operating instructions.
2.
The fourth program should have the following parameters (unless the customer
has other wishes):
- 26 kV
- Iontomat H
- Film density adjustment 0.0
- Anode filter combination W/Rh
Adjusting the bias voltage
3
1.
Attach a magnification table (small focus is selected).
2.
Select the W/Rh anode/filter combination.
3.
Connect digital voltmeter to H3(-) and G(+) at the tube housing filament
connections.
4.
Adjust R4 on D706 to the voltage stated in the test certificate for the tube
(tungsten focus).
Adapting the filament heating
3
In the test certificate for the X-ray tube you can find the filament current values for all
focuses.
1.
In the service program choose “Main menu” then “Configuration” and then
“filament” enter the values for small and large tungsten focus reduced by 200 (e.g.
if the test certificate states a filament current of 7000, you shall enter 6800).
2.
Save the values with <F2>.
Large focus W/Rh
3
1.
Mount an 18
8
24 table.
2.
In the service program choose “Main menu” then “Configuration” and then
“Filament”.
3.
Place the marker on “Large focus tungsten”.
4.
Press <F3> (learn).
5.
The message “Please wait. Adjusting data on control panel” is shown on the
screen, then the message “CAUTION!!! Pressing <ALT> + <F6> releases
exposure. Protect yourself.” is shown.
6.
Press <ALT> + <F6> to release exposure.
7.
After the exposure the divergence (%) from the correct adaptation value is shown.
Be sure not to expose surrounding people to radiation. Protect
yourself.
NOTICE