FujiFilm DR-ID 1300 Service Manual page 179

 READ MODE
Sets charge accumulation time of the SE (FPD). Eight options are available and are
divided into "fixed modes" and "variable modes".
- FIXED MODE
Sets constant time irrespective of the X-ray irradiation time specified in each
exposure menu of the CL. Used when the X-ray high voltage generator is not
connected.
- VARIABLE MODE
The reading mode is changed over the FIXED MODE (200 ms), the FIXED MODE
(500 ms) and the FIXED MODE (1200 ms) depending on the X-ray irradiation time
specified in each exposure menu of the CL. Used when the X-ray high voltage
generator is connected.
u INSTRUCTION u
If the X-ray irradiation time specified by the customer in the X-ray high voltage
generator is changed, the change cannot be reflected in the mode setting as the
change is not fed back to the MC before exposure. If the X-ray irradiation time
changed by the customer is longer than the charge accumulation time specified in the
MC, the irradiation is terminated upon completion of accumulation, and images with
insufficient dose may result.
Instruct the customer not to set the charge accumulation time longer than specified in
the mode when the customer is to change the X-ray irradiation time.
REFERENCE
You can check the X-ray irradiation time specified in each exposure menu through the
user utility of the CL.
 Settings without the X-ray high voltage generator connected
Select among the fixed modes when the X-ray high voltage generator is not
connected. Ask the customer about the exposure conditions in which the longest
X-ray irradiation time is required when a fixed mode is to be used, and select the
mode with a longer charge accumulation time specified than the X-ray irradiation time.
Charge
Option accumulation
time
0: FIXED MODE 200 msec
200 msec
(200 ms) or less
1: FIXED MODE 500 msec
500 msec
(500 ms) [default] or less
2: FIXED MODE 1200 to 3800 1200 to 3800
(1200 ms) msec (*) msec
*: Charge accumulation time is set in "MODE2 EXPOSURE TIME".
018-234-04E
X-ray
irradiation Remarks
time
Select for exposures with low dose or
exposures considering throughputs such as
chest mass-screening.
Usually select this mode.
Image quality might degrade for low dose
exposures.
 Setting with the X-ray high voltage generator connected
Select among variable modes when the X-ray high voltage generator is to be
connected.
X-ray irradiation
Option time specified in the
exposure menu
200 msec or less
3: VARIABLE 201 to 500 msec
MODE (1.0)
501 msec or more
181 msec or less
4: VARIABLE 182 to 454 msec
MODE (1.1)
455 msec or more
166 msec or less
5: VARIABLE 167 to 416 msec
MODE (1.2)
417 msec or more
142 msec or less
6: VARIABLE 143 to 357 msec
MODE (1.4)
358 msec or more
117 msec or less
7: VARIABLE 118 to 294 msec
MODE (1.7)
295 msec or more
*: When selecting any of options 3 to 7, enable the X-CON setting in the DX Console, and
set the appropriate value to the irradiation time in the exposure menu.
Example) If "3" is selected, the charge accumulation time becomes 200 msec when the
irradiation time has been set to 190 msec with the exposure menu of the DX Console.
Also, the charge accumulation time becomes 500 msec when the irradiation time has
been set to 300 msec with the exposure menu.
DR-ID 1300 / DR-ID 1300PU Service Manual
Charge
accumulation Remarks
time
200 msec
Accumulation might terminate during
500 msec X-ray irradiation (irradiation is forced to
terminate at the same time), and might
1200 to 3800
result in images with insufficient dose.
msec (*)
200 msec
500 msec
1200 to 3800
msec (*)
200 msec
500 msec
Usually select this mode.
1200 to 3800
msec (*)
200 msec
500 msec
1200 to 3800
msec (*)
200 msec
500 msec
1200 to 3800
msec (*)
MU1-14
MU1-14