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"PWR A/B" LED:
It is on when power is present at PWR A/B connector on rear panel.
"VCC" LED:
It is on when adequate power is being derived from the power source.
"RS-485" LED:*
It is on when the TC3420 is set for RS-485. (Internal SW2-8, On)
It is off when the TC3420 is set for RS-422. (Internal SW2-8, Off)
"Alarm" LED:
It will light or flash under the following conditions.
1.
Solidly lit when no Ethernet signal is detected. "LNK" LED will also flash.
2.
Flashing when either the LOCLB, RMTLB or SIG GEN diagnostic mode is enabled.
"Link" LED:
It is on when proper Ethernet signal is detected at the RJ-45 port. Flashing when no
Ethernet signal is detected at the RJ-45 port.
"ACT" LED (Activity):
that the "ACT" LED will blink occasionally.
"DHCP" LED:*
The DHCP option is available for slave unit only. The LED will flash when the unit is
getting the network information from the DHCP server and it is On when the unit gets the
information. The LED is Off for the master unit or when DHCP option is not set.
"LOCLB" LED (Local loopback):
"RMTLB" LED (Remote loopback):
"DRV" LED: *
It is on when the TC3420 is in "drive mode.
It is off when the TC3420 is in "receive mode.
"SERIAL" LED:
It is on when the unit is set to Serial Tunnel mode.
"TELNET" LED: *
It is on when the unit is set to Telnet Gateway or Reverse Telnet
mode.
*Note: Not used, for future release.
It will flash when data traffic is detected at the Ethernet port. It is normal
It flashes when the local loop back function is turn On.
It flashes when the remote loop back function is turn On.
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