CV-M2CL and CV-M8CL
6.2.8. LVAL a-synchronous accumulation
With LS=1, the accumulation will start after the trigger leading edge.
The exposure start delay will be 151 clk. pulses after the trigger. It is 3.76
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. Tri g
0. 5L
SUB
114ck
37ck
SG
Exposure
Peri od
Vi rtual SUB
Equi val ence
Pul se
Data-out del ay:
0. 5L to 1. 5L
Exposure del ay:
151ck( 3. 76us)
FVAL
Speci f i ed Number of LVALs
by shutter set
Actual Exposure Peri od
DATA OUT
OB
OB
Fig. 22. LVAL a-synchronous accumulation in EPS mode
LVAL
Ext. Tri g
0. 5L
SUB
114ck
37ck
SG
Exposure
Peri od
Vi rtual SUB
Equi val ence
Pul se
Data-out del ay:
0. 5L to 1. 5L
Exposure del ay:
151ck( 3. 764us)
FVAL
Actual Exposure Peri od
DATA OUT
OB
OB
Fig. 23. LVAL a-synchronous accumulation in PWC mode
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