1313DXT-I/1515DXT-I/2520DX-I/3030DX-I X-ray Detectors
20
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U
SER
M
ANUAL
8.8.2
Expose_OK Output Signal
The output from the detector is the
Expose_OK
signal which can be used to trigger the
generator.
•
Expose_OK is active-low (octo-coupler on) when the detector is not being read-out.
•
Duration of Expose_OK is: Frame Time
minus
Read-out Time.
•
Read-out Time varies according to the mode.
•
Maximum sink current is 50mA.
•
Maximum Vceo is 80V.
•
Maximum collector power dissipation is 150mW.
Figure 13
User_Sync & Expose_OK Signals
Note
For pulsed X-ray beam application, X-ray pulses must be delivered when
Expose_OK
is active-low. If the exposure pulse exceeds the
Expose_OK
window, additional noise or stripe artifacts may occur.
