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EL-2800M-GE2 / EL-2800C-GE2
- 38 -
5.5.3
Characteristics of optical interface
The relationship of the input signal to the output signal through the optical interface is as follows.
270Ω
User Power
(
VCC
)
3.3V
5V
12V
24V
Time Delay Rise
TDR (us)
0.54
0.54
0.62
0.68
Rise Time
RT (us)
1.2
1.2
2
3
Time Delay Fall
TDF (us)
1.5
1.5
2.4
2.1
Fall Time
FT (us)
3.6
3.4
4.5
6.8
Fig.10 Optical interface characteristics
5.6 Pulse Generator
The EL-2800-GE2 has a frequency divider using the internal pixel clock as the basic clock and four
pulse generators. In each Pulse Generator, various Clear settings are connected to GPIO. The
following shows Pulse Generator default settings.
Table - 10 Pulse Generator default settings
Display Name
Value
Clock Pre-scaler
1
Pulse Generator
Selector
Pulse Generator
Length
Start
Point
End
Point
Repeat
Count
Clear
Source
Clear
Inverter
Clear
Activation
Clear
Sync
Mode
-
Pulse Generator 0
1
0
1
0
Off
True
Off
Async Mode
-
Pulse Generator 1
1
0
1
0
Off
True
Off
Async Mode
-
Pulse Generator 2
1
0
1
0
Off
True
Off
Async Mode
-
Pulse Generator 3
1
0
1
0
Off
True
Off
Async Mode
Note:
When Pulse Generator Repeat Count is set to “0”, the camera is operating in Free Running mode.
However, based on the above default settings (Length=1, Start Point=0 and End Point=1), Pulse Generator stops at
High output. Therefore, if Start Point=0 and End Point=1 are configured, Length should be
“
2
”
as the minimum active
width.
EL-2800-GE2
270
Ω
User
Power
Output line
Voltage