This is the list of the X-Ray tube's tracked data. It includes all the
tube parameters that can be measured by the Generator. All these parameters
should be reset to zero each time we change the tube.
Filament aging corrections for small filament
Unit: Filament Amps
Difference between Heater current consign value at end of exposure
(last autocalibration value) and theoretical Heater current value defined
with JEDI HP software database emission curve parameters.
This parameter is logged in the TnT log file at end of preparation.
Filament aging corrections for large filament
Unit: Filament Amps
Difference between Heater current consign value at end of exposure
(last autocalibration value) and theoretical Heater current value defined
with JEDI HP software database emission curve parameters.
This parameter is logged in the TnT log file at end of preparation.
Total number of spits
Unit: None
Spit software counter (large filament + small filament): Cathode +
kV regulation spits.
This counter is logged in the TnT log file at end of preparation.
Cathode spits
Unit: None
Spit software counter (large filament + small filament): Cathode spits.
Cathode spits are defined as actual tube spits.
This counter is logged in the TnT log file at end of preparation.
kV regulation spits
Unit: None
Spit software counter (LF + SF): kV regulation spits. A kV regulation
spit is defined by a kV regulation error.
This counter is logged in the TnT log file at end of preparation.
Number of exposures on small filament
Unit: None
Small filament exposures software counter.
This counter is logged in the TnT log file at end of preparation.
Number of exposures on large filament
Unit: None
Large filament exposures software counter.
This counter is logged in the TnT log file at end of preparation.
Total exposures number
Unit: None
Small filament + Large filament exposures software counter.
This counter is logged in the TnT log file at end of preparation.
Number of anode accelerations
Unit: None
Preparation command counter
This counter is logged in the TnT log file at end of preparation.
Cumulated energy on small filament
Unit: Joules
Measured (multiply kV measured by mAs measured): small focus.
This measurement is logged in the TnT log file at end of preparation.
Cumulated energy on large filament
Unit: Joules
Measured (multiply kV measured by mAs measured): large focus.
This measurement is logged in the TnT log file at end of preparation.
Cumulated Rad exposure time on small focus
Unit: Seconds
Cumulated time measured while the measured actual kV is over 75% of
the requested kV: small focus.
This measurement is logged in the TnT log file at end of preparation.
Cumulated Rad exposure time on large focus
Unit: Seconds
Cumulated time measured while the measured actual kV is over 75% of
the requested kV: large focus.
This measurement is logged in the TnT log file at end of preparation.
Cumulated mAs
Unit: mAs
mAs measured for each exposure and added to the last value.
This measurement is logged in the TnT log file at end of preparation.
Rotation PWM duty cycle
Unit: Volts
Value given by the rotor board firmware at end of acceleration.
This measurement is logged in the TnT log file at end of rotor acceleration.
This value is the voltage required by the rotation drive to rotate
the anode. Not enough data to determine normal operating range.
Table 1. Example TnT log file Data type X-ray Tube Tube
Filament aging corrections for small filament
0.00E+00
Filament Amps
Tube
Filament aging corrections for large filament
1.46E-01
Filament Amps
Tube
Total number of spits
6.50E+01
None
Tube
Cathode spits
45
None
Tube
kV regulation spits
20
None
Tube
Number of exposures on small filament
0.00E+00
None
Tube
Number of exposures on large filament
1.32E+04
None
Tube
Total exposures number
1.32E+04
None
Tube
Number of anode accelerations
1214
None
Tube
Cumulated energy on small filament
0.00E+00
Joules
Tube
Cumulated energy on large filament
7.45E+08
Joules
Tube
Cumulated Rad exposure time on small focus
0.00E+00
Seconds
Tube
Cumulated Rad exposure time on large focus
4.18E+04
Seconds
Tube
Cumulated mAs
5.93E+06
mAs
Tube
Rotation PWM duty cycle
8.00E+01
%