Siemens SIREMOBIL Iso-C

44 Adjustments / Programs
SIREMOBIL Iso-C SPR2-230.840.01.01.02 © Siemens, 2008
08.08 CS PS SP
Page 44 of 148
For internal use only
Dose rate adjustment 5.3
Prerequisites 0
x The "Adjustment mode" parameter in the "Doserate adjustment" parameter group has
been programmed to "semi-automatic".
Preliminary steps 0
x Switch on SIREMOBIL Iso-C.
x Connect the service PC to the serial interface of the SIREMOBIL Iso-C.
x Start the service program.
x Select the "Diagnostics..."menu.
x Select the "Monitoring..."menu.
x Select the "Doserate adjustment" menu from the Combo Box "Group 1".
x Click on the button "Update Start".
x The following is displayed on the service PC:
x Select the I.I. survey format (refer to the I.I. ZOOM STATUS).
x Insert 25 mm Al and 2.1mm Cu at the radiation exit port of the SIREPHOS.
x Center the dose measurement chamber on the I.I. input screen and attach.
x The grid remains on the I.I.
Correction factors: 0
x Grid correction factor 23 cm (9") I.I.: 1.5 / 27 cm (11") I.I.: 1.5
x Dose measurement chamber correction factor for Dali and Nomex: 1.06
AUTO REGULATION indicates the current status of the automatic adjustment.
(active / not active / manual / done)
BRIGHTNESS DEVIATION shows the difference in the actual brightness value minus the
nominal brightness value.
CONTROL CURVE shows the currently selected fluoro curve (default: S2, antiiso-
watt 5 mA)
ADJUSTMENT shows the operating control mode. (Generator / Camera Iris /
Stop)
I.I. ZOOM STATUS shows the current I.I. format (survey / zoom)
DOSERATE shows the dose rate selected. (LOW / MID / HIGH)
TV-IRIS NOMINAL VALUE shows the stored or nominal TV-iris value from the learning
phase. Note: An offset value is added to this value. For this
reason, the TV-IRIS NOMINAL VALUE and TV-IRIS ACTUAL
VALUE differ despite the correct adjustment (BRIGHTNESS
DEVIATION 0 r3).
TV-IRIS ACTUAL VALUE shows the actual TV iris value.