LQ-200CL
17
6.2.4 Shutter-Select mode with external trigger
This mode allows the user to have full control of the exposure time, by programming a timing
generator, while the line rate is controlled by an external trigger signal. The camera can accept
an external trigger through the Camera Link connector or though the 12-pin Hirose connector.
To use this mode:
Set function
Trigger
TR=1
Trigger origin, external
TG=1
Individual R, G and B exposure
EI=0(individual)
EI=1(tracking with G)
Programmable exposure
PER/PEG/PEB/PEIR=2 to 2150400 (in 25ns
steps)
Important note:
If using individual exposure, the EEN signal represents the channel with the longest exposure time
The trigger interval is more than 52.6μs.
If one-push auto white balance is used, using the shutter (command AH) or using the gain
(Command AW) depends on applications. If the auto white balance switch located on the rear
panel is used, only the gain is effective.
When the one-push white balance has been initiated and the rear panel LED shows orange, the
camera must receive continuous external trigger pulses corresponding to the frequency and
duty cycle used in the application.
The maximum trigger period is the interval of the input trigger.
Fig. 15 Shutter-Select mode with external trigger (and individual exposure)
φ H2
φ H1
DM
0
DM
1
DM
2
Dat a
φ PG
φ TG
LVAL
DVAL
EEN
φ AB_Rch
φ AB_Gch
φ AB_Bch
DM
21
DM
20
DM
19
Is
o0
Is
o1
Is
o2
OB
0
OB
1
OB
2
OB
3
OB
4
OB
5
OB
6
OB
7
OB
8
OB
9
TP
0
TP
1
AP
0
AP
1
AP
2
AP
3
AP
4
AP
5
AP
6
AP
7
AP
8
AP
9
AP
10
AP
11
AP
12
AP
20
47
AP
20
46
AP
20
45
AP
20
44
AP
20
43
AP
20
42
AP
20
41
AP
20
40
AP
20
39
AP
20
38
AP
20
37
AP
20
36
TP
2
TP
3
TRI GGER
T1 (Rch)
T1 (Gch)
T1 (Bch)
30ck以内
30ck
30ck
30ck
Effectice Video
2048
Clearer timing diagram
required. No need to show
internal clock signals.