PTW DIAMENTOR E2 - Basic Device Settings (Setup Menu)

DIAMENTOR E2
First Time Operation
16 D651.131.00/05 en
4.5 Basic Device Settings (Setup
Menu)
General information
The setup menu will be activated by pressing the
TEST and RESET buttons simultaneously for about
2 seconds In the menu mode the buttons are used
for cursor control, to change and confirm settings
and to quit a menu.
All adjustments performed in the setup menu are
saved to the non-volatile memory.
Selecting a measuring quantity
When the setup menu is called up, the current set-
tings for the measuring quantity are shown. The
settings available for the measuring quantity are
− dose area product doSE
− dose area product rate doSEr
− During irradiation display
of the detected dose area
product rate; after irradiation
display of the total dose
area product Auto
Use the TEST (→) button to toggle between the
available settings. Confirm the selected setting with
RESET (↵). After confirmation, the menu item for
setting the chamber calibration factor will be called
up automatically.
Entering the chamber calibration factor
Check the setting for the chamber calibration factor.
The original chamber factor K
G
is indicated on the
chamber housing.
Each time you connect another chamber, you
should enter the new chamber calibration factor as
described below.
To change the chamber calibration factor confirm
the setting for the measuring quantity with RESET
(
↵). The menu item for setting the chamber calibra-
tion factor CHAF will be called up automatically.
The current setting for the chamber calibration fac-
tor will be displayed. Change the current digit with
PRINT (↑) and move to the next digit with TEST
(→).Chamber calibration factors can be set in the
range (0.01 ... 9.99).
Confirm the selected setting with RESET (↵). After
confirmation, the measuring mode will be entered
automatically. The print mode can be switched on /
off with TEST button (display Prn on / Prn off).
PC can be connected only with disabled print mode.
If the print mode is set to ”Prn off” the print function
of PRINT button is inactive. To obtain a printout of
the measured values, first activate print mode.
NOTE
Ionization chambers calibrated by PTW-
Freiburg are suitable for over couch tubes and
under couch tubes. To compensate for the cali-
bration error inherent in the system, the cham-
ber calibration factor may be multiplied by a cor-
rection factor. The correction factor for over
couch tubes is 1.10, for under couch tubes,
0.95 (refer to section 7).
We recommend to have the system calibrated
annually or every 2 years by specially trained
staff on site or in our calibration laboratory of
PTW-Freiburg.