RaySafe Xi - Manual (Page 12)

Pulses pulses
Frame rate frames/s
Dose per frame Gy or r
mAs mas (requires raysafe Xi base unit with mas)
mA ma (requires raysafe Xi base unit with mas)
3. SETUP MENU
press SELECT to enter the SETUP MENU (from MEASURE MODE) and STEP to step between setup
parameters.
all values are stored in a non-volatile memory and are valid until manually changed. at start up (after the
battery status information), valid trig delay, kVp delay and Calc. delay are displayed in sequence.
(factory settings in bold.)
Trig delay a delay in ms after the normal trig of the raysafe Xi. utilize when an unwanted part
of an exposure, such as a pre-pulse, should be excluded from the measurement. no
measurements are performed during the trig delay. (0, 5, 10, 50, 100, 200, 500, 1000,
2000 ms)
Trig level use trig level to measure correct exposure time on waveforms with slowly increasing
output, such as with single phase dental. the default setting is a low value, that depends
on the selected sensor; see specifications. Can be set to 25, 50 or 75 % of the peak
value of the previous exposure. use it with the same generator settings and fdd. not
selectable before the first exposure or at low dose rates.
kVp delay defined as the delay in ms, after the trig delay, but before the kVp measurement (and
waveform) window begins. use a kVp delay on machines with slow rising output, such
as single phase intra oral machines and fluoroscopy systems. (0, 2, 5, 10, 50, 150, 300,
1000, 1200, 1500, 1700, 2000 ms)
Calc. delay defined as the dead time after end trig, before data is calculated. default is 0.5 s but it is
recommended to use a longer delay when measuring on pulsed fluoroscopy where the
time between pulses may exceed 0.5 s. (0.5, 2, 4, 6, 7 s)
12
raysafe Xi user Manual – r/f Measurement