F. Fluoro mA curve setting (ANALOG-LF30 PCB)
At ANALOG-LF30 PCB, adjust the following potentiometers to achieve the mA curve as shown in the
figure.
A
VR 34
to increase/decrease the mA level, under 50 KV
Set to 0.3 mA
B
VR 27
to change the first knee point for mA
Set to 50 KV
C
VR 29
to increase/decrease the mA level, 50-60 KV
Set to 0.5 mA
D
VR 31
to change the second knee point for mA
Set to 60 KV
E
VR 30
to increase/decrease the mA level, 60-90 KV
Set to 4.0 mA
F
VR 32
to change the third knee point for mA
Set to 90 KV
G
VR 33
to set the mA to match the maximum dose
10 R/min
Procedures:
1.
Power OFF generator.
2.
Connect DVM to FmA3 @ ANALOG-LF30 PCB, using DC reading.
3.
Turn OFF S2-2 @ ANALOG-LF30 PCB. Set FVR mode for calibration.
4.
Turn ON generator. Select Fluoro and FVF mode. Turn OFF IBS.
5.
On the panel, set manual Fluoro KV to 50 KV. Adjust VR34 so that the DVM reads 0.3 V.
(No need to turn on fluoro)
6.
Perform all adjustments as the following figure.
7.
Power OFF generator. Turn ON S2-2 @ ANALOG-LF30 PCB.
mA
4.0
E
G
0.5
0.3
50 60 90 110 KV
B D F
UD150L30-FX/EX Installation Guide, REV_B Page 28 of 35
