HF Series Generators
Calibration
CA-1036R2
15
For High mA stations (from 100 mA) (E05 Memory Location):
1. Enter in Auto-calibration mode by pressing the “Auto Calibration” button
on the GSM menu and select the E05 Memory Location. Confirm all the
following screens.
2. When Auto-calibration is activated, “Auto Calibration” button is lighted
and the “7.75 mAs” v alue is shown on the screen.
3. Perform the following steps:
a. Make an exposure (technique parameters are pre-programmed at
80 kV, 125 mA and 64 ms (
or 63 ms or 65 ms depending on Generator)
and they can be shown when pressing the “Prep” button).
b. Read the mAs measured on the mAs Meter.
c. Read the Filament Current Number shown on the calibration
panel.
d. Increase or decrease the Filament Current Number (by pressing
the “Increase” or “Decrease” buttons) to determine the correction
needed to obtain a value between 7.00 and 8.50 mAs in the mAs
Meter after making a new exposure.
e. Repeat the above steps until a proper mAs value is obtained in the
mAs Meter.
4. Enter the mAs value read in the mAs Meter (it must be a value between
7.00 and 8.50 mAs) in the mAs Display pressing the “mAs Increase”or
“mAs Decrease” buttons.
5. Exit from Auto-calibration mode pressing the “Auto Calibration” button.
At this moment, the Generator will calculate and store the new value in
E05 Memory Location. Auto-calibration is deactivated and the p rocess
is finished when the screen shows the GSM menu.
6. Press the “ Manual Calibration” button. Select an available workstation
(WS) and press the “ OK” button. Then, select the E05 Memory Location
and read its new value on the Calibration Display. Record this value in
the Data Book.
7. Exit calibration mode.
8. After calibration of E03 and E05 Memory Locations:
G Switch the Generator power OFF.
G Disconnect the mAs Meter to the banana plug connections.
G Re-install the link between the banana plug connections on the HV
Transformer.
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