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RMV Operations Manual Revision Copyright illunis LLC, 2014
Page 52
4.1.1: Exposure: Free Run Modes
FRM: Free Run Mode
In Free Run Mode the camera generates all
timing signals to the CCD and to the camera link
port. The trigger signal is ignored. The exposure is
set with the ERASURE register A minimum ERAS-
URE value of 1 results in the maximum exposure
time. The maximum ERASURE value, dependent on
the CCD used, sets the minimum exposure time.
Serial Commands
Target
Index
Command
R/W
Description
04
03
Readout Mode Select
W
0x0000 = Free Run Exposure
02
02
Set Free Run ms
W
Set FR time in milliseconds * 100
02
03
Set Free Run us
W
Set FR time in us
02
02
Get Free Run ms
R
Return actual time in milliseconds * 100
02
03
Get Free Run us
R
Return actual time in us (0xFFFF = to large).
Quick FAQ’s:
►FRM is sometimes called continuous mode.
►In FRM the exposure and readout are overlapped.
►FRM exposure is set in units of line timing
►The strobe signal can be used to determine frame
timing.
►
The exposure detector can be used to measure the
exact exposure in free run mode.
FVAL
Read Out N-2
Read Out N-1
Read Out N
Read Out N + 1
Exposure N-1
Exposure N
Exposure N + 1
Exposure N
Exposure
Read Out
ERASURE
Strobe