JAI CV-M2, Operation Manual

Page: 16 / 35

CV-M2
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6.2.8. LVAL a-synchronous accumulation
With LS=1, the accumulation will start immediately after the trigger leading edge.
The exposure start delay will be 156 clk. pulses after the trigger. It is 3.9
µ
sec.
In EPS mode the exposure stops 0.5 L after the selected shutter time, (in number of LVAL).
In PWC mode the exposure stops 0.5 L after the trigger trailing edge.
A new trigger must not be applied before the previous frame is read out. (FVAL is low).
The minimum trigger interval should be longer than the exposure time + 1 FVAL+3 LVAL.
Important notes on using this mode.
In LVAL a-synchronous PWC mode there is no exposure jitter.
LVAL
Ext . Tr i g
0. 5L
Mi n. : 2L
SUB
104ck
52ck
SG
Exposur e
Per i od
Vi r t ual SUB
Equi val ence
Pul se
Dat a- out del ay:
0. 5L t o 1. 5L
Exposur e del ay:
156ck( 3. 9us)
FVAL
Speci f i ed Number of LVALs
by shut t er set
Act ual Exposur e Per i od
DATA OUT
OB OB
Fig. 22. LVAL a-synchronous accumulation in EPS mode
LVAL
Ext . Tr i g
0. 5L
SUB
104ck
52ck
SG
Exposur e
Per i od
Vi r t ual SUB
Equi val ence
Pul se
Dat a- out del ay:
0. 5L t o 1. 5L
Exposur e del ay:
156ck( 3. 9us)
FVAL
Act ual Exposur e Per i od
DATA OUT
OB OB
Fig. 22A. LVAL a-synchronous accumulation in PWC mode