HP 3162 manual Data Port LEDs Name Color Meaning

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.

3-4 August 2000 3162-A2-GB20-40