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6.2.3 Optical Interface Specifications
The relation of the input signal and the output signal through the optical interface is as
follows.
Time Delay Rising
Rising Time
Falling Delay Time
Falling Time
6.3. Iris video output
This signal can be used for lens iris control in Continuous
and pre-dump modes.
The signal is 1.0 V p-p (with H-sync) from 75 without
termination.
The iris video signal is composed to average the video level in the center area of each frame
and can be output as a composite signal with H-sync. As shown in the following figure, each
frame has its own video level which is averaged.
AM-800GE / AB-800GE
TDR(µs)
RT(µs)
FDR(µs)
FT(µs)
Fig.12 Optical Interface Performance
Fig.14
Iris signal details
- 17 -
User Power (VCC)
3.3V
5V
0.54
0.54
1.2
1.2
1.5
1.5
3.6
3.4
＋５Ｖ
０．１μ
DA IN
DAC
Iris Sync
Fig. 13
12V
24V
0.62
0.68
2.0
3.0
2.4
2.1
4.5
6.8
12K
IRIS Video Out
12K
１Ｋ
１μ
10K
Iris video output.
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