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2.5.3 System Integration
The SR-LEDW/SR-UL2/SR-UL1R/SR-3AR can be integrated with a system. For example, it is
loaded on a mobile XY stage and is moved as measuring.
Refer to the following references for system integration:
Communication specifications
☞ ‘4 Communication with Personal Computer’
Attachment reference
☞
‘6Appendix: External Dimension Diagram’
2.5.4 Measuring a Frequency Light Source
Use the following procedure to measure the frequency light samples.
■ The measurement with FREQ and FIX FREQ mode
In case of knowing the frequency of a measuring object, set the measurement mode to FREQ or FIX
FREQ mode, enter the value of frequency and start measuring.
☞
‘3.3 Measurement Mode’
In FREQ and FIX FREQ mode, the integral time is automatically set to an integer multiple of the
cycle to eliminate error.
■ The measurement with AUTO mode
The followings cases will result in measurement errors.
1. When measuring a light source with high duty ratio as well as high intensity
2. When periodically-changing light sources include very low intensity such as black
3. When cycles of a light source which are measured within the given integral time are not enough
Increasing the integral time is effective in decreasing the error. The integral time delay function can
be used to increase the integration time, to allow stable measurements.
☞
‘3.4 Integral Time Delay Function’
Set the measurement mode to AUTO mode, turn on the integral time delay function and set a delay
time. We recommend at least 100 cycles for the delay time.
Example: For a 10 % error per cycle:
∙ Measure with an integral time of 10 cycles (t: 1 cycle time)
Error = 0.1 t/10 t = 1 %
∙ Measure with an integral time of 100 cycles
Error = 0.1 t/100 t = 0.1 %
In this manner, a longer integral time can be set to decrease error.
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