Fastus D4RF Series, Руководство пользователя

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Frequently Used Functions
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Mechanisms of Hold Display
This section explains the display mechanism for each type of hold display.
MEMO
• The peak and bottom levels displayed with the hold display are numeric values resulting from sampling over a period
of time. Therefore, there is a minor time lag compared to the present received light amount and output status.
• Even when the hold display is in use, detection results are output in real time, the same as with the standard display.
z
Peak/bottom
This mode displays the peak value from times when the received light amount exceeds the threshold and the
bottom value from times when the received light amount falls below the threshold.
The peak and bottom values are updated each time the received light amount exceeds or falls below the
threshold, respectively.
Received light
amount
Time
➀ Sampling in
progress
➁ Peak level
(hold display)
Sampling in
progress
➂ Sampling in
progress
Sampling in progress
Peak level
(hold display)
Bottom level
(hold display)
Threshold
Output status
(Light on)
ON
OFF
➃ Bottom level
(hold display)
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 drops below the threshold, bottom level sampling starts.
④ When the received light amount returns to the threshold, the bottom level is displayed.
The peak and bottom values are updated each time the received light amount exceeds or drops below the
threshold, respectively.