Dalsa Spyder2 S2-2x-04K40, User Manual

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17 Spyder2 4k User’s Manual
03-032-10195-04 DALSA
Table 5: Spyder2 4K (Fixed Integration Mode)
Symbol Definition Min (ns) Max (ns)
twSYNC The minimum low width of the EXSYNC pulse
when not in SMART EXSYNC mode. 100
twSYNC
(SMART)
*
The minimum low width of the EXSYNC pulse
when in SMART EXSYNC modes to guarantee
the photosites are reset.
2,000
twSYNC_INT The minimum width of the high pulse when the
“SMART EXSYNC” feature is turned off 100
twSYNC_INT
(SMART)
*
Is the integration time when the “SMART
EXSYNC” feature is available and turned on.
Note that the minimum time is necessary to
guarantee proper operation.
2,000
tLINE PERIOD
(t
LP
)
The minimum and maximum line times made
up of tTransfer, tREADOUT plus tOVERHEAD
to meet specifications. 54,054
10
6
tTransfer The time from the reception of the falling edge of
EXSYNC to the rising edge of LVAL when
pretrigger is set to zero. Pretrigger reduces the
number of clocks to the rising edge of LVAL but
doesn’t change the time to the first valid pixel. If
the fixed integration time mode of operation is
available and selected then the integration time
is added to the specified value. 1,420 +/-50
twFixed Int. Fixed Integration Time mode of operation for
variable exsync frequency. 800 t
LP
–2,000
tREADOUT Is the number of pixels per tap times the readout
clock period. Pretrigger = 0. 51,200 (4K2T)
tOVERHEAD Is the number of pixels that must elapse after the
falling edge of LVAL before the EXSYNC signal
can be asserted. This time is used to clamp the
internal analog electronics 540+/-50
thPR Applies when the PRIN exposure control feature
is enabled . The PRIN signal must be held a
minimum time after the EXSYNC falling edge to
avoid losing the integrated charge 0
twPR_LOW Minimum Low time to assure complete
photosite reset 2,000 +/- 200
tPR_SET The nominal time that the photo sites are
integrating. Clock synchronization will lead to
integration time jitter, which is shown in the
specification as +/- values. The user should
command times greater than these to ensure
proper charge transfer from the photosites.
Failure to meet this requirement may result in
blooming in the Horizontal Shift Register. 2,000+/-200
*SMART EXSYNC refers to exposure mode 4. Refer to section 3.9 Setting Line Rate and
Exposure Mode for further information on exposure modes.