Calculation Formula Of Frame Rate (In Continuous Trigger Operation) - IAI SP-20000C-USB User Manual

7.1.4.2

Calculation formula of Frame Rate (In Continuous Trigger operation)

Table – 21 Calculation of frame rate Raw in Continuous Trigger
Camera Settings
Pixel Binning
Format Vertical
8 bit 1 (Off)
Mono
chrome
/
8bit
Bayer
2 (On)
10/12 1 (Off)
bit
Mono
chrome
/
10/12
bit
Bayer
2 (On)
SP-20000M-USB / SP-20000C-USB
Minimum Value Setting Calculation Formula
[Unit：us]
The maximum band width of USB is:
[USB Limit] = 5120 x 3840 x 8bit x 16.00 fps = 2516582400 bps
The data rate by ROI setting is
[USB Rate] = [Width] x [Height] x 8 ÷ ((([Height] x 641) + 38580) ÷ 40MHz)
Then as comparing with [USB Limit] and [USB Rate]
(1) IF [USB Limit] < [USB Rate]
[Frame Rate ] = [USB Limit] ÷ [Width] ÷ [Height] ÷ 8
(2) IF [USB Limit] > [USB Rate]
[Frame Rate] = 1/((([Height] x 641) + 38580) ÷ 40MHz)
[Frame Rate Raw] = 1/ [Frame Rate]
The Data rate by ROI setting is :
[USB Rate] = [Width] x [Height] x 8 ÷ ((([Height] x 1282) + 38580) ÷ 40MHz)
Then as comparing with [USB Limit] and [USB Rate]
(1) IF [USB Limit] < [USB Rate]
[Trigger Rate] = [USB Limit] ÷ [Width] ÷ ([Height] x 2) ÷ 8
(2) IF [USB Limit] > [USB Rate]
[Frame Rate] = 1/((([Height] x 1282) + 38580) ÷ 40MHz)
[Frame Rate Raw] = 1/ [Frame Rate]
The maximum band width of USB is:
[USB Limit] = 5120 x 3840 x 8bit x 16.00 fps = 2516582400 bps
The Data rate by ROI setting is :
[USB Rate] = [Width] x [Height] x 8 ÷ ((([Height] x 641) + 38580) ÷ 40MHz) x 2
Then as comparing with [USB Limit] and [USB Rate]
(1) IF [USB Limit] < [USB Rate]
[Frame Rate] = [USB Limit] ÷ [Width] ÷ [Height] ÷ 8 ÷ 2
(2) IF [USB Limit] > [USB Rate]
[Frame Rate] = ((([Height] x 641) + 38580) ÷ 40MHz)
[Frame Rate Raw] = 1/ [Trigger Rate]
The Data rate by ROI setting is :
[USB Rate] = [Width] x [Height] x 8 ÷ ((([Height] x 1282) + 12205) ÷ 40MHz) x 2
Then as comparing with [USB Limit] and [USB Rate]
(1) IF [USB Limit] < [USB Rate]
[Frame Rate] = [USB Limit] ÷ [Width] ÷ ([Height] x 2) ÷ 8 ÷ 2
(2) IF [USB Limit] > [USB Rate]
[Frame Rate] = 1/((([Height] x 1282) + 38580) ÷ 40MHz)
[Frame Rate Raw] = 1/ [Frame Rate]
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