-2
6
-
SECTION 7 : INITIAL SETTING
[ 1 ] SPEED SETTING FOR FILM AND DIGITAL IMAGING
A. FILM SPEED
Prior to shipment of the x-ray from the factory, the following two film speeds are programmed
to
be selected by the Film Speed Selection Switch.
a = Film speed F.09 (equivalent to ISO speed group "D", or Kodak Ultra-speed Film)
b = Film speed F.05 (equivalent to ISO speed group "F/E", or Kodak InSight Film)
In addition to these two speeds, PHOT-X IIs 505 x-ray can provide 16 different film
speeds
(F.00 ~ F.15) and any two of them can be programmed for easy selection. If the doctor
uses
a different film speed, or prefers darker (or lighter) radiographs, the new speed can be
programmed as follows. Higher speed settings make films darker. If film speed is increased
by 1, exposure time becomes 25 % longer.
1. Keep the kV selection switch and mA selection switch depressed simultaneously for more than
3 seconds. Release the switches if the ready light starts to flash.
2. Push F switch momentarily until the "a" light above the F switch illuminates. The exposure
time display window shows the present film speed for "a" setting. (The factory default setting,
F.09 should be displayed.) By depressing
or
switch, increase or decrease film speed
number until desired number for "a" setting is displayed.
3. To change the "b" setting from the factory default, F.05, push F switch momentarily until the
"b" light illuminates. By depressing
or
switch, increase or decrease film speed until the
desired number for "b" setting is displayed.
4. Press
T1 switch
to store these settings, then turn the main power switch off.
B. SPEED FOR DIGITAL IMAGING
PHOT-XIIs 505 x-ray has 16 speeds for digital imaging (d.00 ~ d.15). The factory
setting is
d.
10
and with this setting the exposure time becomes half of F.
10
setting.
As the sensitivity is different according to each manufacturer of digital imaging sensors, this
setting should be adjusted. To get a darker image, increase the speed setting and to get a lighter
image, decrease the speed setting. If the speed setting is increased by 1, exposure time becomes
12 % longer.
1. Keep kV selection switch and mA selection switch depressed simultaneously for more than
3 seconds. Release the switches if the ready light starts to flash.
2. Push D switch momentarily until the light above the D switch illuminates and the exposure
time display window shows the present speed setting. (The factory default setting d.
10
should
be displayed.)
3. By depressing
or
switch, increase or decrease speed until the desired number is
displayed.
4. Press
T1 switch
to store these settings, then turn the main power switch off.
Summary of Contents for PHOT-X IIs 505
Page 2: ......
Page 35: ...NOTE...
