11
10
Exposure Sequence
To learn more about the capabilities of the iXU-RS/iXU-R/iXU
camera, consult the industrial.phaseone.com website and the
documents, which are found on the USB drive that comes with
the camera.
Understanding the Exposure Sequence
There are three signals that are used to communicate with
and control the iXU-RS/iXU-R/iXU exposure sequence:
• Trigger in: The Flight Management System (FMS) signals
the iXU-RS/iXU-R/iXU to take an image.
• System ready: Camera ready/busy signal.
• Mid-exposure pulse: A signal indicates the midpoint of the
exposure time.
Trigger In
System
Ready
Mid-
exposure
Pulse
T4
T1
T2
T3
Figure 1: Exposure Sequence
Table 1 – Exposure sequence
3. Preflight Planning
Typical Values
Schneider-Kreuznach FS
Rodenstock Lenses
RS lenses
T1
Trigger IN – SysRdy (Low)
2 mSec
2 mSec
2 mSec
T2
Trigger IN – Mid Exposure
~50 mSec + 1/2 Exp. Time
~50 mSec + 1/2 Exp. Time
~20 mSec + 1/2 Exp. Time
T3
Mid Exposure Width
1/2 Exp. Time + 1.1 mSec
1/2 Exp. Time + 1.1 mSec
1/2 Exp. Time + 1.1 mSec
T4 (iXU 1000)
Trigger IN – SysRdy (High)
950 mSec
850 mSec
600 mSec
T4 (iXU 180)
Trigger IN – SysRdy (High)
1600 mSec
1250 mSec
1250 mSec
T4 (iXU 160/160 Achromatic)
Trigger IN – SysRdy (High)
1450 mSec
1100 mSec
1100 mSec
T4 (iXU 150)
Trigger IN – SysRdy (High)
850 mSec