JAI CB-141MCL - Manual (Page 20)

CM-141MCL/PMCL/-RA / CB-141MCL/PMCL/-RA
17
0
100% Level 700
200
A
n
a
l
o
g
O
u
t
[
m
V
]
CCD Out [mV] 265
930
6.1.5 Auto-Iris Lens video output (12-pin Hirose connector)
This analogue signal is available at pin 4 of 12-pin Hirose connector. It can be used for lens
iris control in continuous mode and RCT mode only. This output is always effective.
As the signal is taken after the CCD sensor output passes through the gain circuit, the gain
setting is influenced. The video output is with sync signal. The level is 1.0V. PMCL models do
not have this function.
Fig. 15. Iris Video
6.1.6 Auto-detect LVAL-sync / async accumulation
This function replaces the manual setting found in older JAI cameras. Whether accumulation
is synchronous or asynchronous in relationship 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 while FVAL is low, the camera works in LVAL-asynchronous mode,
(no delay) mode.
This applies to both edge pre-select (EPS) trigger mode and pulse width trigger (PWC) mode.
Fig. 16. Auto-detect LVAL sync / async accumulation
(1) (2) (3)
Ext. Trigger
FVAL
(1) In this period camera executes trigger at the next LVAL. (Prevents feed-through
noise)
(2) Avoid trigger at FVAL transition (+ / - 1 LVAL period), as the function may randomly
switch between “next” and “immediate”.
(3) In this period camera executes trigger immediately. (No delay)