Dalsa Piranha ES Series, Руководство пользователя

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Piranha ES-xx User Manual
Teledyne DALSA 03-032-20070-02
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2.3 Camera Link Video Timing
The Piranha ES-xx cam era has tw o d ifferent read ou t tim es. The first read ou t tim e is the
CCD Readout w here the camera pixels are read out into the camera’s line store. The
second read ou t is the line store read ou t w here the line store p ixels are read ou t to you r
acquisition system. The camera’s minimum readout time is dependant on w hich of these
tw o readout times are greater w here the greater readout time w ill be the camera’s
m inim u m read ou t tim e.
The figu re below illu strates cam era tim ing w hen the CCD rea d ou t is greater than the line
store read ou t.
Figure 6: Piranha ES-xx TDI Mode Timing (CCD Limited)
CCD Readout
EXSYNC
Frame Overhead
VTrans Time
HCCD Time
Linestore Start Overhead Linestore End Overhead
oLVal
Linestore Readout
N + 1
N
The follow ing figu re illu strates cam era tim ing w hen the line store read ou t is greater than
the CCD read ou t.
Figure 7: Piranha ES-xx TDI Mode Timing (Line store Limited)
CCD Readout
EXSYNC
Frame Overhead
VTrans Time
HCCD Time
Linestore Start Overhead Linestore End Overhead
oLVal
Linestore Readout
N
N
Table 8: Piranha ES-xx Timing Values
Symbol Time
HCCD Frequency 40 MHz (ES-80-04k40, ES-80-08K80, ES-82-04k40, ES-82-04k80)
20 MHz (ES-80-08K40)
HCCD Pixels/Tap 512 (ES-80) and 256 (ES-82)