43
NED
XCM2080SAT4
/
XCM2040SAT4
UME-0006-04
Figure 4-9-2-1 External Trigger (Trigger Edge) Exposure Mode
Notes:
2) The timing of reading out does one scanning delay from the exposure.
2) See 4.9.1.1 for the value of P and S
4.9.3
External Trigger Exposure Mode (Trigger Level)
In external trigger exposure mode (Trigger Level), the exposure time is determined
by the setting for the line period parameter, each exposure starts with the rising edge
and the line period is determined by high trigger pulse time. The range of
programmable exposure time, the timing chart of the exposure and the readout are
shown below.
Table 4-9-3-1 Programmable Exposure Time (Trigger Level)
Item
Symbol
XCM2080SAT4
XCM2040SAT4
Readout time
R
6.4(2K 4TAP, 1K 2TAP)
12.8(2K 2TAP)
12.8(2K 4TAP, 1K 2TAP)
25.6(2K 2TAP)
Trigger pulse H
time
(Exposure Time)
T1
≧
6.7(4TAP)
≧
13.4(2TAP)
≧
13.4(4TAP)
≧
26.8(2TAP)
Trigger pulse L time
T2
≧
1.3
≧
2.6
Trigger pulse cycle
(Scan Rate)
T3
≧
8(4TAP)
≧
14.7(2TAP)
≧
16(4TAP)
≧
29.4(2TAP)
(unit::
μs)
①
②
③
External Trigger
Signal Input(CC1)
T1
T2
T3
Exposure
①
②
③
Readout
LVAL
R
P
S
①
②