CPI Indico 100 Series Service And Installation Manual page 124

3C
Programming the Generator
3C.5.1 Tube Selection (cont)
•
MAX SF MA
•
ANODE HU WARNING
•
ANODE HU LIMIT
•
SF STANDBY
•
LF STANDBY
•
SF MAX
•
LF MAX
•
FIL BOOST
•
FIL PREHEAT
Typically, the boost time should be between 200 and 250 msec, and the preheat time should be in the
range of 700 - 800 ms.
If in doubt, monitor the filament feedback and be sure the filament is not being over or under driven during
an exposure.
Standby current must be below the emission point. If the standby current is too high, the lower
fluoro mA may not calibrate properly resulting in a high mA fault error during fluoro operation.
If the maximum filament current is increased, be careful not to exceed the tube manufacturer's
specifications.
Use these steps to modify the tube defaults.
Step
1.
2.
3.
4.
Page 3C-10
Use the >>, <<, and RETURN buttons to navigate through the TUBE
DEFAULTS screens.
Select the appropriate default value to change. Refer to the definitions on the
previous page.
Use the + and - buttons to change the selected values. Pressing the TUBE
SPEED button toggles the selection between LOW, HIGH and DUAL speed
(generators with dual speed starter only).
When finished altering the tube default values, press the <<, RETURN or EXIT
button(s) as required to return to the TUBE SELECTION menu (two tube
generators) or GEN CONFIGURATION menu (one tube generators).
Rev. B Millenia / Indico 100 Series Service Manual
Sets the maximum mA in small focus. This should be set as
low as possible to preserve the focal spot track wear and focal
spot blooming.
Sets the limit at which the anode heat warning message is
displayed.
Sets the limit at which exposures will be inhibited. If the present
anode heating is under the threshold, the exposure will be
inhibited if the next exposure is calculated to exceed the anode
HU limit.
Sets the small focus standby filament current. The required
value should be obtained from the X-ray tube data sheets.
As above but for large focus.
Sets the small focus maximum filament current.
As above but for large focus.
Sets the filament rapid boost duration in order to quickly raise
the filament temperature. In installations where a spot film or
equivalent device is used, default boost and preheat values
may be decreased if needed to allow for one second R/F
change over time.
The time that the filament is held at the required emission level
before an exposure is permitted
Action
CPI Canada Inc.
Ch # 740904-05