Quantum ODYSSEY HF Series User Manual

Chapter 3 Calibration
Revision W HF Series X-ray Generators - Service Manual
3-42 Quantum Medical Imaging, LLC
8. When measured mA is 75, or when waveform is sufficiently flat, press the
key next to the Small Filament field. The large filament calibration
screen is displayed:
Figure 3-34. Filament Calibration Screen (Large Filament)
9. Take an exposure at the setting indicated in the center display box of the
Filament Calibration Screen (i.e., 70 kVp, 300L mA, 15 msec).
If using an
oscilloscope, set time to 50 msec
.
10. On the Dynalyzer Digital Display or mAs meter, observe the measured
current value. (Ideally, this value should be 300 mA or 4.5 mAs.)
11. If not 300 mA, or if waveform is not flat, adjust the large filament offset
value in the Large Filament field up or down (up increases mA, down
decreases mA).
12. Re-take exposure at same settings and adjust large filament offset value
if necessary. Repeat this step until measured mA is 300, or until wave-
form is relatively flat.
13. When measured mA is 300, filament calibration is complete.
14. To proceed to mA calibration, press the key next to the Next Calibra-
tion field.
Note: An error message appears if the filament
current is set too low, which indicates the fila-
ment offset value for the filament being cali-
brated is set too high. If this occurs, increase the
filament current by lowering the filament offset
value (i.e., by pressing the Filament Small or Fila-
ment Large up arrow key).
INCREASE/
DECREASE
FILAMENT
CURRENT
KEYS
SAVE LARGE
FILAMENT
CALIBRATION

Quantum ODYSSEY HF Series Specifications

General

Brand	Quantum
Model	ODYSSEY HF Series
Category	Medical Equipment
Language	English