Hamamatsu Photonics C9300-124, Instruction Manual

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C9300-124 Ver.1.4
16
(2) Exposure time setting: Electronic Shutter ............................ NMD S, SHT n
Exposure and readout repeat along with the operation of the electronic shutter
according to the sequence set internally. The exposure time is set with the SHT n
command. This setting is made in units of one horizontal scan cycle for each scan
mode. Exposure timing and exposure time is as following.
[Exposure timing]
CCD exposure
Readout signal
from CCD chip
Digital data
output
Exposure time = SHT n
Readout period
Electrical
shutter signal
[Exposure time at each readout mode]
Scan mode Single output Dual output
Normal readout
199.3 µs + (n-1)
×
149.3 µs
(n = 1 to 6698)
131.4 µs + (n-1)
×
81.4 µs
(n = 1 to 12 285)
(3) Exposure time setting: Absolute Time .......................... NMD T, AET ss.xxx
Exposure and readout repeat along with the operation of the electronic shutter
according to the sequence set internally. The exposure time is set with the AET ss.xxx
command (where s = seconds, x = milliseconds). The actual length of exposure time is
the specified time taken as a value expressed in horizontal scan units. Exposure time
longer than 1 s is not possible.