BM-500
CL / BB-500
CL
- 12 -
6.1.5.
Rear panel indicator.
The rear panel mounted LED provides the following information:
Amber: Power connected - initiating
Steady green: Camera is operating in Continuous mode
Flashing green: The camera is receiving external trigger
6.1.6.
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 during FVAL 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.
FVAL
(1)
(3)
(1) In this period camera executes trigger at next LVAL (prevents feed-through noise)
(2) Avoid trigger at FVAL transition (+/- LVAL period), as the function may randomly
switch between “ next LVAL ” and “ immediate ”.
(2)
External Trigger
+/- 1 LVAL
(3) In this period, camera executes trigger immediately ( no delay).
Fig.9 Auto-detect LVAL sync/a-sync accumulation
6.1.7.
Starting pixel - Bayer color mosaic
The BB-500CL is a color camera based on a CCD sensor
with a Bayer color mosaic.
The color image reconstruction is done in the host PC.
The color sequence in the video signal is the same for
any scanning modes except the programmable partial.
The right hand drawing shows the color sequence at
the image start.
The starting line number is shown from LVAL.
The first active pixel starts from LVAL, when DVAL rises.
Even lines starts with GBG.
Odd lines starts with RGR
See also chapter 6.1.8 Partial Scan
Fig. 10. Bayer color mosaic
DC IN/ TRIG
DIGITAL I / O
POWER/ TRIG
DC IN/ TRIG
DIGITA
I / O
POWER/ TRIG
FVAL Timing
LVAL
DVAL
1
177
263
305
119
9
Full
2/3 Partial
1/2 Partial
1/4 Partial
1/8 Partial
1
Line # from FVAL raising edge
G B
R
G
R
G B
R G
G
R
Actual V Line #
1
343
515
773
901
G B
R G
G
R
G B
R G
G
R
40 ck
G B
R G
G
R
G B
R G
G
R