Hamamatsu Photonics C15550-20UP, Instruction Manual

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qCMOS Camera C15550-20UP / C15550-20UP01 Instruction manual_Ver.1.3
31
11-1-4 FRAME RATE CALCULATION
(1) Standard scan: CoaXPress
Exp1 = 7.2 µs to 1800 s (input in units of seconds)
1H = 7.2 µs
Exp2 = ROUNDUP (Exp1 / 1H) * Round up to integer
Vn1 = Number of vertical lines
Vn2 = (Vn1 / 2) + 5
Conditions Vn3
Exp2 < 13 889
Exp2 < Vn2 0
Exp2
≥
Vn2 Exp2 - Vn2 + 1
Exp2
≥
13 889 0
Vn4 = MAX (Vn2 + 2, Exp2)
Operation modes Calculation formula Horizontal Vertical Max frame rate (fps)
Free running mode
If (Exp2 < 13 889):
1 / (Vn2 + Vn3) / 1H
Others: 1 / Exp2 / 1H
4096
2304 120
2048 134
1024 268
512 532
256 1044
8 15 432
4 19 841
External trigger mode
(Edge trigger / Level trigger /
Global reset edge trigger /
Global reset level trigger)
1 / (Vn2 + Exp2 +3) / 1H 4096
2304 119
2048 134
1024 266
512 524
256 1013
8 10 683
4 12 626
External trigger mode
(Synchronous readout trigger) 1 / (Vn4 + 1) / 1H
4096
2304 119
2048 134
1024 267
512 526
256 1021
8 11 574
4 13 888
• The frame rate value is valid 3 digits and rounded down to 4th digit.
• The calculation formula and the frame rate value of Start trigger mode (External trigger mode) are
same as Free running mode. About this mode, refer to 11-1-6-3 “Start trigger mode”.
• The calculation formula and the frame rate value do not depend on the bit depth of digital output.
• Ultra quiet mode is used for the Photon number resolving mode.