Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
RFL DS-562NC RFL Electronics Inc.
July 5, 2012 38 (973) 334-3100
Table 30. Auto-Negotiation/Forced Mode Combinations
Device Modes
Auto-neg
Forced 100
FD
Forced 100
HD
Forced 10
FD
Forced 10
HD
Auto-neg
Valid Link Unstable Link Valid Link Unstable Link Valid Link
Forced
100 FD
Unstable Link Valid Link False Link No Link No Link
Forced
100 HD
Valid Link False Link Valid Link No Link No Link
Forced
100 HD
Unstable Link No Link No Link Valid Link False Link
MA-428
Modes
Forced
100 HD
Valid Link No Link No Link False Link Valid Link
The Link light varies to indicate the current link state.
• Valid Link – The light is green and steadily on. The MA-428 module adapter is ready to
operate. There should be no data loss.
• No Link – The link light is not on and there should not be any data transfer.
• Unstable Link – A few of the Ethernet network interface cards (NICs) in the computer
may not be able to identify the duplex mode at the other end, because of this limitation,
auto-negotiation does not always work and the module adapter defaults to half-duplex.
• False Link – Even though the link is established, data loss occurs.
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