User`s manual

Spyder 3 GigE User Manual
03-032-10158-09 DALSA
30
tPR ns 0
twPR_LOW ns 3000
twPR_HIGH ns 3000
tPR_INT ns 3000
Table 8: tReadout Values
tREADOUT
Sensor Size # Taps Readout Time
1024 1 25600ns
1024 2 12800ns
2048 1 51200ns
2048 2 25600ns
Table 9: tOverhead Values
tOVERHEAD
Sensor Size # Taps Readout Time
1024 1 725ns
1024 2 450ns
2048 1 1400ns
2048 2 725ns
Latency Calculation
Latency = Ethernet_Aquisition_Time + LAN_Preparation_Time + LAN_Transfer_Time +
Overhead_Delay
Ethernet Acquisition Time
If pkt_payload_size equals line size use the following equation
Ethernet_Acquisition_Time = (pkt_payload_size / (clk_freq * num_taps * round_up
(pixel_width / 8))) + (interline_delay * INT (pkt_payload_size / line_size))
If pkt_payload_size does not equal line size use the following equation
Ethernet_Acquisition_Time = (pkt_payload_size / (clk_freq * num_taps * round_up
(pixel_width / 8)))
Table 10
pkt_payload_size 8128 (default)
pkt_header_size 64
clk_freq (MHz) 40
LAN_clk_freq (MHz) 33
num_taps 1 or 2
pixel_width 8 or 12
interline_delay (μs) 1k 1 tap 1600
1k 2 tap 1325
2k 1 tap 2275
2k 2 tap 1600
line_size 1024 or 2048
LAN Preparation Time