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RMV Operations Manual Revision Copyright illunis LLC, 2014
Page 54
4.1.3: Exposure:Free Run Modes
Set Free Run Exposure Time
The free run exposure time is set In lines of eras-
ure. The resolution of the exposure is in horizontal line
times. Two commands are provided for calculating the
free run time from a specified time variable
(milliseconds or microseconds).
The closest availa-
ble time is selected and set in the internal time var-
iable.
The maximum free run time is dependent on
the sensor, readout mode, and pixel clock speed. The
millisecond variable is set as ms*100 to give more res-
olution to the command. This results in a maximum
possible exposure of 655ms although the value is sen-
sor dependant.
Serial Commands
Target
Index
Command
R/W
Description
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:
►
The strobe signal can be found on the RMV power
connector and is a 3.3V LVTTL signal.
►
Minimum exposure time is set by the photodiode
transfer to vertical CCD clock sequence.
►
Maximum exposure time is set by the sensor size
and line timing.
►
Note
:
The exposure time must be resent if you
change single/dual tap mode.
Example:
Set free run time to 10 ms
{w020203E815} 0x3E8 = dec 1000 = 10ms * 100
{w02032710C9} 0x2710 = dec 10000us = 10ms