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6.4.3
Characteristics of optical interface
The relationship of the input signal to the output signal through the optical interface is as follows.
Characteristics of user output circuit
R4= 330ΩPULL_UP
Time Delay Rise TDR (us)
Rise Time RT (us)
Time Delay Fall TDF (us)
Fall Time FT (us)
6.4.4
Opt In Filter Selector function
As for the surge protection of the optical input, the filter can be selected from 5 steps which are
10 µs (Typical), 100 µs, 500 µs, 1 ms and 10 ms. If the filter is set, a pulse with a shorter width than
the filter setting value cannot be accepted.
6.5
Pulse Generator
The GO-5000-USB has a frequency divider using the pixel clock as the basic clock and a pulse
generator. In each Pulse Generator, various Clear settings are connected to GPIO.
The following shows Pulse Generator default settings.
GO-5000M-USB / GO-5000C-USB
User Power
（Vcc）
3.3v
0.78
4.1
0.26
1.3
Fig.10
Optical interface characteristics
Fig.10
Optical interface characteristics
- 18 -
5.0v
12v
24v
0.82
1.8
2.65
4.7
6.1
9.1
0.48
0.56
0.78
1.6
3.1
4.8
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