Patton electronics 2707RC User Manual

Patton electronics 2707RC User Manual Manual pdf 24 page image

245.0 OPERATIONOnce the NetLink-E1™ is installed and configured properly it is ready toplace into operation. This section describes the function of the LED indi-cators, and the use of the loopback and pattern test modes.5.1 LED DESCRIPTIONSThe NetLink-E1™ is equipped with nine LED indicators that monitor thestatus of communication. Figure 13 shows the location of the LEDs onthe NetLink-E1™ Series front panel.Figure 13. Model 2707RC front panel, showing LED indicators.TXD When the unit sends a one, the TXD LED is green. When itsends a zero, the TXD LED is yellow. Moreover, the TXDLED is active only in active DS0 channels. In inactivechannels, the TXD LED is off.RXD When the unit receives a one, the RXD LED is green.When it receives a zero, the RXD LED is yellow. Moreover,the RXD LED is active only in active DS0 channels. Ininactive channels, the RXD LED is off.Link The Link LED is green when it detects a live E1 networkconnection by the 2707RC’s E1 port. The Link LEDremains off if there is no connection to the E1 network.TM The Test Mode LED will briefly blink yellow to indicate thatthe Model 2707RC is in local loopback mode.LinkTMTXDRXDModel 2707RCLLB