ALLIED Vision Technologies Bonito CL-400 200 fps - Manual (Page 42)

Parameters and commands
Bonito Technical Manual V2.3.0
42
Related Parameters D, F, K, M, N and S.
Frame duration must always be greater than exposure time.
Example 1 K=53 (0x53 = 84), sets prescaler tick length to 84 clock cycles, which
corresponds to 1.5 μs
E=6BE (0x6BE = 1726), sets exposure time to 1726 prescaler ticks
F=FA0 (0xFA0 = 4000), sets frame duration to 4000 prescaler ticks
M=3 activate free-running exposure mode using E and F
Result:
exposure time = 1726 * 1.5 μs = 2589 μs
frame duration = 4000 * 1.5 μs = 6000 μs
Example 2 K=A7 (0xA7 = 167), sets prescaler tick length to 167 clock cycles, which
corresponds to 3 μs
E=50000 (0x50000 = 327680), sets exposure time to 327680 prescaler ticks
F=50001 (0x50001 = 327681), sets frame duration to 327681 prescaler
ticks (greater than exposure time)
M=3 activate free-running exposure mode using E and F
Result:
exposure time = 327680 * 3 μs = 983040 μs = approx. 1 s
frame duration = 327681 * 3 μs = 983043 μs
Frame duration (F)
The frame duration is a 32-bit value. Its time resolution depends on the
prescaler value
K. For detailed information see chapter Timer prescaler value
(K) on page 45.
Range From 2 to FFFFFFFF, depending on K, M and N. Observe meeting the respec-
tive minimum
Default 6BF
Related Parameters D, E, K, M, N and S
Example S=3 enable dual channel Camera Link with grabber compatibility
Note

The exposure time control using this value is only active if the
trigger mode
M is set to the values of 2 or 3.
This parameter will be ignored if the Permanent Exposure
mode, or PIV mode, or Enhanced Full Well mode, is activated.
However, even if one of the above mentioned modes are set, it
may be necessary to set this parameter to get a correct internal
timing sequence.
For more information see chapter Exposure control mode (M)
on page 45.