NI C Series Getting Started

Figure 13. Measurement with Divisor set to 3
Counter ReadCounter Armed
0 1 2 3 1
1 2 3 4 5 6 7 1
Signal to Measure
Counter Timebase
Counter Value
Current Measurement
Read Value
7 3
7 3
The following figure shows an example of Measurement Time.
Figure 14. Measurement using Measurement Time
0 1 2 3 1
1 2 3 4 5 6 7
Signal to Measure
Counter Timebase
Counter Value
Current Measurement
Read Value
7 3
7 3
Counter Armed Counter Read
Measurement Time
In the following examples, both the Divisor and Measurement Time are set for
frequency measurement.
In the following figure, the Divisor period of the input signal, in this case 3, is met
before the measurement time elapsed, thus the Divisor setting is used for the
frequency measurement.
Figure 15. Divisor completes before Measurement Time
1 2 3 4 5 6 7 8 9
Signal to Measure
Counter Timebase
Counter Value
Current Measurement
Read Value
9 3
9 3
Counter Armed Counter Read
0 1 2 3
Measurement Time
Divisor Count = 3
In the following figure, the measurement time elapsed before the 3 divisor periods
of the input signal, thus the Measurement Time setting is used for the frequency
measurement.
© National Instruments
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NI-9361 Getting Started

NI C Series Specifications

General

Brand	NI
Model	C Series
Category	Control Unit
Language	English