Basler scout GigE, User Manual, Page: 58 / 374

Basler Network Drivers and Parameters AW00011916000
48 Basler scout GigE
General Parameters
Enable Resend - Enables the packet resend mechanisms.
If the Enable Resend parameter is set to false, the resend mechanisms are disabled. The
performance driver will not check for missing packets and will not send resend requests to the
camera.
If the Enable Resend parameter is set to true, the resend mechanisms are enabled. The
performance driver will check for missing packets. Depending on the parameter settings and the
resend response, the driver will send one or several resend requests to the camera.
Receive Window Size - Sets the size of the receive window.
Threshold Resend Mechanism Parameters
The threshold resend request mechanism is illustrated in Figure 28 where the following
assumptions are made:

Packets 997, 998, and 999 are missing from the stream of packets.

Packet 1002 is missing from the stream of packets.
(1) Front end of the receive window. Missing packets are detected here.
(2) Stream of packets. Gray indicates that the status was checked as the packet entered the
receive window. White indicates that the status has not yet been checked.
(3) Receive window of the performance driver.
(4) Threshold for sending resend requests (resend request threshold).
(5) A separate resend request is sent for each packets 997, 998, and 999.
(6) Threshold for batching resend requests for consecutive missing packets (resend request
batching threshold). Only one resend request will be sent for the consecutive missing
packets.
993 994 995 996 1000 1001 1003 1004 1005 1006 1007 992 991 990 989
988
987 986 985
Time
DIAGRAM IS NOT DRAWN TO SCALE
Fig. 28: Example of a Receive Window with Resend Request Threshold & Resend Request Batching Threshold
(6) (5) (3) (2) (1) (4)