Both the response and the noise of the detectors have been characterized
as function of signal strength. Tab. 
summarizes the
overall properties of the detectors.
For sensitivity calculations, the noise per reset interval may be summarized as
with 
the signal in 
V/s and 
dimensionless (happens to be equal to
the reset time in seconds).
The empirically determined noise parameters 
(read noise, in V/s)
(dark current noise, in V/s), and 
(signal shot noise,
V
/s)
have been obtained by
forcing a fit through this function, and are summarized in
Tab. .
For the SW grating and the FP detectors the function works well up to a
sec.
For the LW grating detectors the function does not work well in
describing the dependency, and the resulting values are not
necessarily directly to be associated with read noise and dark noise.
Parameter values are chosen in such a way that they give the best
description for the short reset intervals.
For Band 4, test measurements show consistently a very poor increase
of SNR for 
sec.
The parameters listed apply to = 1 sec and = 2 sec. For
longer no improvement in noise should be expected, but the
function still applies.
Table: Summary of SWS-FM detector properties for a reset time
sec
