40 NED
XCM
4085TLCT6
UME-0062-01
4.8.2
External Trigger
Exposure Mode (
External trigger edge
)
In external trigger exposure mode (Trigger Edge), the exposure time is
determined by the setting through the serial communication, each exposure starts
with the rising edge and the line period is determined by the time from rising edge
to rising edge of the trigger pulse. The range of programmable exposure time, the
timing chart of the exposure and the readout are shown below.
Table 4-8-2-1 Programmable Exposure Time
Item
symbol
XCM4085TLCT6
Programmable exposure time
P
22.12 ~ 23373.17
Readout time
R
Data output at each colour
at 85MHz 2taps
：
24.10
at 85MHz 1tap
：
48.19
at 40MHz 2taps
：
50.73
at 40MHz 1tap
：
101.45
Trigger pulse H time
T1
≧
1.50
Trigger pulse L time
T2
≧
2.86
Trigger pulse cycle(Scan rate)
T3
≧
P + 2.86
But the scan rate must be as follows.
Data output at each colour
at 85MHz 1tap
：
≧
49.22
at 40MHz 2taps
：
≧
52.79
at 40MHz 1tap
：
≧
103.44
(unit
：
μs)
Figure 4-8-2-1 External Trigger (Trigger Edge) Exposure Mode
外部トリガ信号
入力(CC1)
T1
T2
T3
露光
読み出し
LVAL
R
P
Exposure
Readout
LVAL
External
Trigger Signal
Input(CC1)
