Monitoring the DSU
6-4
7610-A2-GB20-00
November 1996
Port LEDs
TXD – Transmitted Data:
ON
– Receiving all 1’s from the DTE.
OFF
– Receiving all 0’s from the DTE.
Blinking – User data is being transferred.
RXD – Received Data:
ON
– Sending all 1’s to the DTE.
OFF
– Sending all 0’s to the DTE.
Blinking – User data is being transferred.
RTS – Request to Send:
ON – DTE is activating a control signal to
indicate readiness to transmit data.
CTS – Clear to Send:
ON – DSU is activating a control signal to
indicate to the DTE that it can start
sending data.
DTR – Data Terminal Ready:
ON – DTE is activating a control signal to
indicate readiness for operation.
