Fastus D4RF Series, User Manual

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Basic Usage
Frequently Used Functions
z
Peak or Bottom
These modes display either the peak value from times when the received light amount exceeds the threshold
or the bottom value from times when the received light amount drops below the threshold.
The peak or bottom level is updated each time the received light amount exceeds or drops below the
threshold, respectively.
<Peak>
Received light
amount
Time
➀ Sampling in
progress
Sampling in
progress
➁
Peak level
(hold display)
➂ Sampling
in progress
➃ Peak level
(hold display)
Threshold
Output
(Light on)
ON
OFF
① When the received light amount exceeds the threshold, peak level sampling starts.
② When the received light amount returns to the threshold, the peak level is displayed.
③ When the received light amount exceeds the threshold again, peak level sampling starts.
④ When the received light amount returns to the threshold, the peak level is updated.
The peak level is updated each time the received light amount exceeds the threshold.
<Bottom>
Received light
amount
Time
➀ Sampling in
progress
Sampling in
progress
➂ Sampling in
progress
Threshold
Output
(Light on)
ON
OFF
➃ Bottom level
(hold display)
➁ Bottom level
(hold display)
① When the received light amount drops below the threshold, bottom level sampling starts.
② When the received light amount returns to the threshold, the bottom level is displayed.
③ When the received light amount drops below the threshold again, bottom level sampling starts.
④ When the received light amount returns to the threshold, the bottom level is updated.
The bottom level is updated each time the received light amount drops below the threshold.