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Signal Handling
TM-4100GE Software
4
Signal Handling
This section briefly describes the signal handling of the GE cameras in the following sections:
•
“Camera Inputs” on page 19
•
“GPIO Control Block” on page 20
•
“GPIO Look-Up Table” on page 22
•
“GPIO Label Tables” on page 22
•
“Pulse Generators” on page 24
Refer to the
Cam2Net User’s Manual
for additional details.
4.1 Camera Inputs
For information on the polarity and type of the signals required to support specific camera functions,
refer to “Asynchronous Reset” on page 39.
The TM4100GE has four externally controllable standard signals:
•
Trigger (VINIT or EXT_TRIG) (CC1 equivalent)
•
Integration Control (INTEG/ROI) (CC2 equivalent)
•
VD in (EXT_VD) (CC3 equivalent)
•
HD in (EXT_HD) (CC4 equivalent)
The labels for these signals in the GPIO Control Block programming language are:
•
I0, for VINIT (must be configured as EXT_TRIG)
•
I1, for VD in (must be configured as EXT_VD)
•
I2, for HD in (must be configured as EXT_HD)
•
I4, for Integration control (must be configured as INT)
For normal exposure operation, the INTEG signal must be high. In the GPIO lookup table language:
Q5=1. When it is low, the CCD readout is inhibited. To use the Integration Control, set Q5=I3 in the
GPIO lookup table.
4.2 Camera Outputs
When the Asynchronous Trigger is used, the strobe output indicates the exposure period.
•
I-4 for strobe output (must be configured as CAM_STROBE)
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