0: Auto. Clears dark current below ~
45% of the maximum line rate. (1k and
2k camera models only.)
1: Dark current clear. Always clears
dark. Reduces the maximum line rate.
(1k and 2k camera models only.)
2: Immediate readout. Does not clear
dark current. (Default mode.)
Modes 0 and 1 are not available to the 4k camera
model.
The vertical transfer gates collect dark current
during the line period. This collected current is
added to the pixel charge. The middle two red
taps have more vertical transfer gates and,
therefore, more charge. This additional charge is
especially noticeable at slower line rates.
If the user is in sem 2 or 7 and srm 2, with
ssf at 45% of the maximum, and then srm 1 is
selected, the following warning will be
displayed, but the ssf value will not be changed:
Warning 09: Internal line rate inconsistent with
readout time> The effect in both internal and
external line rate modes is that an EXSYNC is
skipped and, therefore, the output will be at
least twice as bright.
This value is saved with the camera settings.
This value may be viewed using either the gcp
command or the get srm command.