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TS3 User Manual
page 108
Finding the Correct Packet Delay Value:
The correct packet delay value is one where the PC can keep up with the fl o w of incoming
packets. The use of the bu ff er will sometimes mask the act that the drive is not quite keeping up.
Referring to Table 10-5, compare the Min column (that is the minimum number of bu ff ers available
during the save) with the “Good Frames” column (the number of frames saved). You can see that as
the number of frames increases, the Min number decreases, which means that the hard drive is
not quite keeping up with the fl o w.
Note: In each instance on the table, all of the frames were successfully saved as the system
automati ally retrieves any “missed frames” at the end of the download.
The last three downloads shown on the table demonstrate that a higher Packet Delay is a little
b ett er for this system. In these last three saves, delays of 50, 35, and 25 were used. You can see that
the speed of the transfer was not really a ff ected by the increased delay times, but th a t the Min
bu ff er value was very high. For this system a Packet Delay of 40 will probably be OK, but 50 is a be
er number because the system can maintain the same transfer rate without exhausting its bu ff ers.
Duration
h:m:s:dec
Bytes Speed
MB/s
Miss-
Frames
ROI Good-
Frames
Pkt-
Size
MissPkts PktDly Bu ff er Backo ff Min Drv Ext
0:0:14:663 1179664800 80.3583 0 1280x1024 300 9000 0 40 200 100 178 K: bmp
0:0:19:266 1572886400 78.9485 0 1280x1024 400 9000 0 40 200 100 174 K: bmp
0:0:23:562 1966108000 81.5229 0 1280x1024 500 9000 0 40 200 100 168 K: bmp
0:0:28:242 2359329600 80.3583 0 1280x1024 600 9000 0 40 200 100 161 K: bmp
0:0:41:923 3538994400 82.3182 0 1280x1024 900 9000 0 40 200 100 152 K: bmp
0:0:56:45 4718659200 80.3583 0 1280x1024 1200 9000 0 40 200 100 130 K: bmp
0:1:10:535 5898324000 80.3583 0 1280x1024 1500 9000 0 40 200 100 105 K: bmp
0:1:33:768 7864432000 80.6463 0 1280x1024 2000 9000 0 40 200 100 99 K: bmp
0:2:19:27 11796648000 80.9364 0 1280x1024 3000 9000 0 40 200 100 99 K: bmp
0:5:13:731 25626251672 78.0802 1 1280x1024 6517 9000 40 40 200 100 99 K: bmp
0:5:15:858 25626251672 77.5844 0 1280x1024 6517 9000 0
50
200 100
188
K: bmp
0:5:16:5 25626251672 77.3389 0 1280x1024 6517 9000 0 35 200 100 99 K: bmp
0:5:16:338 25626251672 77.3389 0 1280x1024 6517 9000 0 25 200 100 96 K: bmp
Table 10-5: Finding the Correct Packet Delay Value