GE_OEC_9600_C-Arms

Generator Calibration 27
5R ENTRANCE EXPOSURE CALIBRATION
Use this procedure to change the mA Limit File data within the generator software.
Editing the mA Limit File
1. With the system completely booted, insert the OEC service access disk in the
Workstation. Then press SETUP OPTIONS.
2. Select Access Level 2. Then select Access Mainframe Menu.
3. Select E - mA Limit File Editor. The following menu appears.
_____ mA Limit File Editor _____
MM/DD/YEAR malimit.dat loaded
kVp Maximum mA
40 5.0 A. Fill with constant
41 5.0 B. Clear mA to zero
42 5.0 C. Interpolate Table
43 5.0 D. Set mA high limit
44 5.0 E. Restore Original
45 5.0 F. Edit mA Table
46 5.0
47 5.0 ESC - QUIT
48 5.0
49 5.0
50 5.0 ENTER CHOICE (A,B, . .):
4. Select A. Fill with constant. Enter a value of 5.0. This allows you to temporarily
exceed the 4.63 R/min limit to find the maximum mA allowed for several kV
settings.
5. Press ESC. Then press Y to save changes.
6. Select A - Run Applications. Then press ESC twice to clear the right monitor.
7. In increments of 5 kVp from 40 kVp to 120 kVp determine the mA needed to
produce 4.63 R/minute. Use the worksheet on the following page and record the
maximum mA values which allow the system to approach but not exceed 4.63
R/min.