JDS Uniphase IP Video Test Option HST-3000, User Manual

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Appendix A Test Results
Error Stats results
302
HST-3000 Ethernet Testing User’s Guide
OoS Frames A count of each instance where the
HST detects out of sequence Acterna
test frames. For example, if the HST
detects sequence numbers: 1, 2, 3, 6,
7, 8, (frame 6 is detected immediately
following frame 3), the out of sequence
count is incremented by one, resulting
in a count of one instance of out of
sequence frames. If the HST then
detects sequence numbers 9, 10, 14,
15, 16 (frame 14 is detected immedi-
ately following frame 10), the out of
sequence number is incremented again
by one, resulting in a total count of two
instances of out of sequence frames.
Runts A count of frames under the minimum
64 byte frame length containing Frame
Check Sequence (FCS) errors.
Rx Collisions A count of the number of times the HST
has received a jam signal while it was
not transmitting frames. This result only
appears for half-duplex 10/100 Ether-
net tests.
Tx Collisions A count of the number of times the HST
has transmitted a frame, and then
received a jam signal in the time slot for
the frame. This result only appears for
half-duplex 10/100/1G electrical Ether-
net tests.
Tx Defers A count of the number of times the
transmitter prepared to send traffic, and
then was forced to defer based on link
activity. This result only appears for
half-duplex 10/100/1G electrical Ether-
net tests.
Undersized A count of frames under the minimum
64 byte frame length.
Table 37 Error Stats test results (Continued)
Result Description