RMV Operations Manual Revision Copyright illunis LLC, 2014
Page 114
8.3 Camera Link
Camera Link Valids
The RMV samples and processes the en-
tire area of the image sensor. In the standard oper-
ating mode only the active image area is output on
the camera link as valid data. The LVAL/FVAL sig-
nals, which define the valid pixel data, can be pro-
grammed to output any part of the image including
the optical black clamping areas. FVAL start/stop
are specified in lines. LVAL start is in pixels plus
the overhead of the CCD vertical clocks. LVAL
stop is specified as the same as LVAL start with the
exception of its maximum value is 1. VALID starts
and stop changes are not stored on system save
and must be reprogrammed each time they are
Serial Commands
Target
Index
Command
R/W
Description
04
1b
System Registers
R
0x0008 = LVAL Start
0x0009 = LVAL Stop
0x000a = FVAL Start
0x000b = FVAL Stop
04
27
System Registers
W
0x0008 = LVAL Start
0x0009 = LVAL Stop
0x000a = FVAL Start
0x000b = FVAL Stop
Quick FAQ’s:
►LVAL = Line VALid: This Camera Link signal indi-
cates when pixel data is valid with a line.
►FVAL = Frame VALid: This Camera Link signal
indicates when line data is valid with a Frame.
►LVAL start and stop define a lines active pixels and
are in some weird internal FPGA counting unit.
►FVAL start and stop define a frames active lines
and are directly related to the sensor design.
►The SNR detectors operate on the optical black
areas of the sensor and you must change LVAL
start and stop to display them.
Active Area
LV
A
L
S
ta
rt
FV
A
L
LVAL
LV
A
L
S
to
p
FVAL Start
FVAL Stop