Hamamatsu Photonics C15550-20UP, Instruction Manual

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qCMOS Camera C15550-20UP / C15550-20UP01 Instruction manual_Ver.1.3
36
11-1-5 CONFIGURING EXPOSURE TIME
The exposure time setting can be done by the units of seconds.
The actual exposure time setting is defined by the following formula, and the camera automatically
calculates a longer and closest value from the specified exposure time setting.
(1) Standard scan
Exp1 = 7.2 µs to 1800 s (input in units of seconds)
1H = 7.2 µs
Exp2 = ROUNDUP (Exp1 / 1H) * Round up to integer
Calculation formula Exp2 × 1H
(2) Ultra quiet scan
Vn1 = Number of vertical lines (Binning OFF)
Vn2 = (Vn1 / 2) + 5
1H = 172.8 µs
Conditions Exp1 (input in units of seconds)
Free running mode
External trigger mode
(Edge trigger / Level trigger)
Vn2 × 1H to 1800 s
External trigger mode
(Global reset edge trigger / Global reset level trigger)
172.8 µs to 1800 s
External trigger mode
(Synchronous readout trigger)
(Vn2 + 2) × 1H to 1800 s
Exp2 = ROUNDUP (Exp1 / 1H) * Round up to integer
Calculation formula Exp2 × 1H
Available setting range of the exposure time is the following.
Scan speed Trigger mode Available setting range of the exposure time
Standard scan -
7.2 µs to 1800 s
(7.2 µs step)
Ultra quiet scan
Free running mode
External trigger mode
(Edge trigger / Level trigger)
199.9 ms to 1800 s
(172.8 µs step)
External trigger mode
(Global reset edge trigger /
Global reset level trigger)
172.8 µs to 1800 s
(172.8 µs step)
External trigger mode
(Synchronous readout trigger)
200.2 ms to 1800 s
(172.8 µs step)
• Ultra quiet mode is used for the Photon number resolving mode.