![JAI CM-030GE-RH Скачать руководство пользователя страница 26](http://html.mh-extra.com/html/jai/cm-030ge-rh/cm-030ge-rh_user-manual_631458026.webp)
CM-030GE-RH
26
8.3.4 Auto-detect LVAL-sync / async accumulation
This function replaces the manual setting found in older JAI cameras. Whether accumulation
is synchronous or asynchronous in relation to LVAL depends on the timing of the trigger input.
When a trigger is received while FVAL is high (during readout), the camera works in LVAL-
synchronous mode, preventing reset feed-through in the video signal. There is a maximum
jitter of one LVAL period from issuing a trigger and accumulation start.
When a trigger is received during FVAL low, the camera works in LVAL-asynchronous mode (no
delay) mode.
This applies to both Edge Pre-select (EPS) trigger mode and Pulse Width Control (PWC) trigger
mode.
Ext. trigger
FVAL
(1)
(3)
(1) In this period camera executes trigger at next LVAL (prevents feed-through noise)
(2) Avoid trigger at FVAL transition (+/- 1 LVAL period), as the function may randomly switch
between "next LVAL" and "immediate".
(3) In this period camera executes trigger immediately (no delay)
(2)
Fig. 15 Auto-detect LVAL sync /async accumulation