BM-500GE / BB-500GE
49
LVAL_sync timing
Fig. 31 Pulse width control LVAL sync.
LVAL_async timing
Fig.32 Pulse Width control LVAL a-sync
10.2.4 Auto-detect LVAL-sync / a-sync. accumulation
This function replaces the manual setting found in older JAI cameras. Whether accumulation
is synchronous or a-synchronous in relationship to LVAL depends on the timing of the trigger
input.
When trigger is received while FVAL is high (during readout), the camera works in LVAL-
synchronous mode, preventing reset feed trough in the video signal. There is a maximum
jitter of one LVAL period from issuing a trigger and accumulation start.
When trigger is received when FVAL is low, the cameras works in LVAL-asynchronous mode,
(no delay) mode.
This applies to both pre-select (PS) trigger mode and pulse width trigger (PW) mode.
Trig
CCD Exposure
Exposure
EEN
FVAL
1L to 2L
2L
2 L(Min.)
1L(Max)
LVAL
LVAL SYNC Mode Setting
Trigger input whthin FVAL HIGH Period
5.37
μs ±
1
μs
2 L(Min.)
CCD exposure
Trig
2L to 3L
EEN
FVAL
Exposure
1L
Trigger input during FVAL LOW period
LVAL a-SYNC mode setting
Summary of Contents for BB-500 GE
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