Dalsa MotionVision CA-D6-0256W-ECEW, Руководство пользователя

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CA-D6-xxxxW User’s Manual
03-32-00225-06 DALSA INC.
USR_EN—Input for Multiplexing
USR_EN is an input used during camera multiplexing. When multiple cameras
share the same data bus, their digital data outputs can be placed into tri-state by
connecting USR_EN to logic LOW. Connecting USR_EN to logic HIGH activates
a camera’s outputs. USR_EN is an optional signal; if not using USR_EN, connect
it to logic HIGH and USR_ENB to logic LOW.
2.7 Timing
When exposed to light, the sensor collects charge. The EXSYNC control signal
(input from framegrabber) triggers the transfer and readout of the charge. The
FVAL output goes high to indicate a valid frame; the LVAL output goes high for
each of the lines that make up the frame. LVAL goes low between the lines of a
frame. The STROBE signal is a pixel clock; digital data is valid on its rising edge.
After a frame is read out, the FVAL signal goes low and the sensor collects charge
for the next frame.
Figure 7. CA-D6-xxxxW Overall Timing
LIN E 1 LAST LIN E
E X SY N C
LVA L
F VA L
1
2
5 3 6
8
7
N /4
3 N /4
N /2
N
N /4 + 1
N /2 + 1
3 N /4 + 1
1
S T R O B E
O S 1
O S 3
O S 2
O S 4
N O T E S :
r isin g e d ge
0 2 5 6 0 5 1 2
Po s itio n o f th e first v alid p ixe l (v a lid o n th e o f S T RO B E )
D im e n sio n s o f s in gle fra m e 4 x (2 6 0 lin e s o f 6 5 pixe ls) 4x (5 1 6 lin e s o f 1 3 3 pixe ls)
1
4 E X S Y N C to firs t v a lid p ix e l 1 5 6 4 S T RO B E s 71 5 8 S T RO B E s
5 LVA L H IG H 6 5 S T R O B Es 13 3 S T RO B E s
6 B e tw e e n lin e s: LVA L L O W 2 9 S T R O B Es 37 S T RO B E s
7 LVA L to F VA L 1 5 S T R O B Es
8 M in im um tim e be tw e e n fra m e s 1 7 1 5 S T RO B E s 74 6 1 S T RO B E s
1 5 S T RO B E s
E X S Y N C m inim u m p u ls e w id th 1 0 0 n s 10 0 n s
2 E X S Y N C to F VA L 1 5 4 2 S T RO B E s 71 3 6
3 F VA L to LVA L 2 2 S T RO B E s 2 2 S T RO B E s
↑
S T R O B E s
↑
↓ ↓
1
2
4
3
4
5
6
7
8
IMPORTANT:
This camera’s data is
valid on the
rising edge
of STROBE, unlike
previous DALSA
cameras, which used
the falling edge.