3. Operation

Table 3-4. Data Port LEDs

Name

Color

Meaning

 

 

 

DTR

Green

Monitors the state of interchange circuit CD (CCITT 108/1, /2)

 

 

Data Terminal Ready received from the synchronous data DTE.

 

 

ON: DTR is being asserted by the synchronous data DTE.

 

 

OFF: DTR is not being asserted.

 

 

 

TXD

Yellow

Monitors activity on interchange circuit BA (CCITT 103)

 

 

Transmitted Data. This is the data sent from the synchronous

 

 

data DTE to the data port on the DSU/CSU.

 

 

ON: Ones are being received from the synchronous data DTE.

 

 

OFF: Zeros are being received from the synchronous data DTE.

 

 

CYCLING: Both ones and zeros are being received from the

 

 

synchronous data DTE.

 

 

 

RXD

Yellow

Monitors activity on interchange circuit BB (CCITT 104)

 

 

Received Data. This is data sent to the synchronous data DTE

 

 

from the data port on the DSU/CSU.

 

 

ON: Ones are being sent to the synchronous data DTE.

 

 

OFF: Zeros are being sent to the synchronous data DTE.

 

 

CYCLING: Both ones and zeros are being sent to the

 

 

synchronous data DTE.

 

 

 

CTS

Yellow

Monitors the state of interchange circuit CB (CCITT 106)

 

 

Clear-to-Send sent to the synchronous data DTE.

 

 

ON: CTS is being asserted by the DSU/CSU.

 

 

OFF: CTS is not being asserted.

 

 

 

RTS

Yellow

Monitors the state of interchange circuit CA (CCITT 105)

 

 

Request-to-Send received from the synchronous data DTE.

 

 

ON: RTS is being asserted by the synchronous data DTE.

 

 

OFF: RTS is not being asserted.

 

 

 

3-8

February 2001

3160-A2-GB21-90

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Image 42
Paradyne 3160-A3, 3165-A2, 3164-A2, 3161-B3 manual Data Port LEDs Name Color Meaning, Dtr