Dalsa Spyder3 SC-30-02K80-00-R, User Manual

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Spyder3 Color Manual 33
DALSA 03-032-20059-01
to the maximum time (line period – line transfer time – pixel reset time) for that line
rate when a new line rate requiring reduced exposure time is entered.

When setting the exposure time (using the
set
command), line time will be
increased, if necessary, to accommodate the exposure time. Under this condition, the
line time will equal the exposure time + line transfer time.
Example 1: Exposure Time Less than Line Period
Readout
Waiting Exposure Time
Readout
Waiting CR Exposure Time
Programmable Period (set command)
Programmable Period
CR
Line Period
Line Period
Programmable Period (ssf command) Programmable Period
CR = Charge Reset
Mode 3: External Trigger with Maximum Exposure
Line rate is set by the period of the external trigger pulses. The falling edge of the external
trigger marks the beginning of the exposure.
Example 2: Line Rate is set by External Trigger Pulses.
Line Period Line Period
Readout Readout
Exposure Time
Exposure Time
EXSYNC
Falling edge ignored
during readout
Falling edge ignored
during readout
Mode 4: Smart EXSYNC, External Line Rate and Exposure Time
In this mode, EXSYNC sets both the line period and the exposure time. The rising edge of
EXSYNC marks the beginning of the exposure and the falling edge initiates readout.
Example 3: Trigger Period is Repetitive and Greater than Read Out Time.
Line Period Line Period
Readout
Waiting Exposure Time
CR
Waiting
Readout
Exposure Time
CR
EXSYNC
CR = Charge Reset
EXSYNC falling edge
ignored during readout
EXSYNC falling edge
ignored during readout