Expose_Ok Output Signal; Figure 13 User_Sync & Expose_Ok Signals - Varex Imaging PaxScan 1313DXT-I Manual

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.
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
Note
window, additional noise or stripe artifacts may occur.
Figure 13 User_Sync & Expose_OK Signals
20
1313DXT-I/1515DXT-I/2520DX-I/3030DX-I X-ray Detectors
www.vareximaging.com