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Falcon2 4M, 8M, and 12M Camera User's Manual
03-032-20107-03
Teledyne DALSA
External Frame Rate, Programmable Exposure Time
In this m od e, the fram e rate is set externally w ith the fa lling ed ge of EXSYN C generating the rising ed ge
of a p rogram m able exp osu re tim e.
Camera Features:
TriggerMode = On
ExposureMode = Timed
ExposureTime = 10000 (for example)
Figure 15: External Frame Rate, Programmable Exposure Time
Exposure Time
Exp osu re tim e is the am ou nt of tim e that the sensor is allow ed to accu m u late ch arge before bei ng read .
The u ser can set the exp osu re tim e w hen the
ExposureM ode
featu re is set to
Timed
. The lim itations on the
m axim u m exp osu re tim e are listed below :
External Exposure Time: 20 µs (min) to 1 second (max).
Internal Exposure Time: (1 / frame rate) – X
Table 7: Exposure time padding
Pixel Size
Value of
”X”
8 bits p er p ixel
50
9 bits p er p ixel
30
10 bits p er p ixel
30
Note: The maximum exposure time is dependent on the frame rate. To increase maximum exposure time,
decrease the frame rate.
Frame Time
Frame Time
Readout Time
Exposure Time
Programmable
User Exsync
FVAL
Exposure Time
Programmable
Internally-generated Exsync
