## FU - mA adaptation results

##### Adaptation Results |  |
Select Adaptation Table for Reading |  | Only possible with an adapted filament
focus: |  | type in filament number, see table ‘focus number FU-mA’
U [kV]: |  | type in a kV value between 40...150kV (or whatever the limit is)
Read Previously Selected Adaptation Table |  | Displays tables of different sizes (kV stage dependent) after the filament has successfully been adapted. Screen (or value line) 1/xx always displays the individual standby filament current at 100uA. Screen xx/xx displays a filament current which is just one step above the limit filament current.
If [mA] : |  | filament current lowest value highest value | = = | standby filament current upper filament current limit + a little bit on top
|  | table size depends on the filament current mA steps (individual for every kV stage)
Ie [uA] : |  | emission current at the given filament current
boost time [ms] : |  | how long it takes to boost up from a specific emission current (filament temperature) to a higher emission current (higher temperature) with the boost current = max filament current + 2A (positive boost)
blank time [ms] : |  | how long it takes for the filament to ‘cool down’ from a specific emission current to a lower emission current (negative boost)
|  | to get to a lower mA value the filament current goes down to 0.5A (0.5A is required as lowest current to feed a grid switch unit, if present)
|  | typically the negative boost time is 2-3 times positive boost time