使用pci6014的计数器时，为什么老报错？
时间：12-13
整理：3721RD
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报告错误的内容：
Possible reason(s):
Some or all of the samples requested have not yet been acquired.
To wait for the samples to become available use a longer read timeout or rea
d later in your program. To make the samples available sooner, increase the
sample rate. If your task uses a start trigger, make sure that your start t
rigger is configured correctly. It is also possible that you configured the
task for external timing, and no clock was supplied. If this is the case, su
pply an external clock.
Property: RelativeTo
Corresponding Value: Current Read Position
Property: Offset
Corresponding Value: 0
Task Name: _unnamedTask<5>
请高手指点，谢谢
Possible reason(s):
Some or all of the samples requested have not yet been acquired.
To wait for the samples to become available use a longer read timeout or rea
d later in your program. To make the samples available sooner, increase the
sample rate. If your task uses a start trigger, make sure that your start t
rigger is configured correctly. It is also possible that you configured the
task for external timing, and no clock was supplied. If this is the case, su
pply an external clock.
Property: RelativeTo
Corresponding Value: Current Read Position
Property: Offset
Corresponding Value: 0
Task Name: _unnamedTask<5>
请高手指点，谢谢