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4M30 Camera User's Manual
•
The register settings required for each mode are defined in Table 17: Integration/Trigger
Modes.
Table 17: Integration/Trigger Modes
Mode
Programmed Integration/Free Running
Programmed Integration/SMA Trigger
Programmed Integration/Serial Trigger
External Integration/SMA Trigger
External Integration/Serial Trigger
Whenever the Integrate Mode or External Trigger Mode bits are set the MODE LED on
the right side of the rear cover will light to indicate that an externally synchronized mode
is active.
Free Running (Programmed Integration):
The camera speed is controlled by writing a 3-byte integration time value (in µs) to the
three Integration Time registers. These three bytes are then combined to form a 24 bit
integration time. The number represents the integer number of microseconds the camera
will collect light. The number programmed in the three registers should not be below 10
PS (0000Ah). The camera will run at maximum speed for the programmed integration
time.
Example: Set integration time to 10ms
With an internal integration time of 10 ms, the camera will operate at 23.6 fps.
1.
2.
DALSA
External Integration/Serial Trigger: The camera will integrate as long as the Serial
Trigger signal is held high. The integration time is effectively the input pulse width.
In this mode, the serial signal also controls the frame rate. Due to variation in the host
operating system, this mode is generally used only for camera setup and functional
testing.
1/Frame Rate
= 10 ms + 32.35 ms
= 42.35 ms
Using the command 82h, set bit [7] of the data byte to 0 (Integration Mode = Internal)
and bit [3] of the data byte to 0 (Trigger Mode = Internal).
NOTE:
All bits within the register are written at one time. Ensure the correct value for
all bits are used when changing camera modes.
Use commands 8Ah, 8Bh, 8Ch to set the 24-bit integration time value.
Value
= 10 ms
= 10000 µs
= 002710h
Control Register
Bit [7]
INTEGRATE
0
0
0
1
1
27
Control Register
Bit [3]
EXT Trigger
0
1
1
1
1
03-32-10030-03
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