Basler A640F, Руководство пользователя

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Smart Features
6-36
BASLER A640
f
DRAFT
6.7.14 Strobe Time Base
The strobe time base smart feature can be used to change the delay time base and the duration
time base for the strobe control feature (see Section
3.7 ).
Changing the Strobe Delay Time Base
As described in Section 3.7 , the delay for any one of the strobe signals is determined by a
combination of two values. The first is the setting in the Delay Value field of the corresponding
Strobe Control register (see page
4-50 ). The second is the Strobe Delay Time Base. For example,
the Strobe 0 delay will be determined by the product of these two parameters:
Strobe 0 Delay = (Strobe 0 Delay Value Setting) x (Strobe Delay Time Base)
The strobe delay time base is fixed at 1/1024 ms by default and the strobe delay time is normally
adjusted by changing the setting in the Delay Value field of the corresponding Strobe Control
register. However, if you require a delay that is longer than what you can achieve by changing the
strobe delay value alone, the Strobe Time Base CSR can be used to change the strobe delay time
base.
To change the strobe delay time base:
• Set the Delay Time Base field in the Strobe Time Base CSR to your desired time base value
Example
Assume that you have set the Delay Value field of the Strobe 0 control register to 186. Also
assume that you have set the Delay Time Base field in the Strobe Time Base CSR to 14. In this
case:
Strobe 0 Delay = (Strobe 0 Delay Value Setting) x (Strobe Delay Time Base)
Strobe 0 Delay = (186) x (14/1024 ms)
Strobe 0 Delay = 2.54 ms
Changing the Strobe Duration Time Base
As described in Section 3.7 , the duration for any one of the strobe signals is determined by a
combination of two values. The first is the setting in the Duration Value field of the corresponding
Strobe Control register (see page
4-50 ). The second is the Strobe Duration Time Base. For
example, the Strobe 0 duration will be determined by the product of these two parameters:
Strobe 0 Duration = (Strobe 0 Duration Value Setting) x (Strobe Duration Time Base)
The strobe duration time base is fixed at 1/1024 ms by default and the strobe duration is normally
adjusted by changing the setting in the Duration Value field of the corresponding Strobe Control
register. However, if you require a duration that is longer than what you can achieve by changing
the strobe duration value alone, the Strobe Time Base CSR can be used to change the strobe
duration time base.
To change the strobe duration time base:
• Set the Duration Time Base field in the Strobe Time Base CSR to your desired time base
value