Nokia 7000 Series, 6800 Series operation manual User Interface, Indicators and Controls, Function

Chapter 2: DNH-6800 DigiNet Hub Module User Interface

User Interface

Indicators and Controls

When a signal collision occurs, the DNH-6800 briefly jams all the nodes from transmitting.

The nodes then begin re- transmitting the packets at randomized intervals.

The user interface consists of LEDs that indicate various states or activities, a jumper for disabling Channel 0, and a Reset button. These are described in the table below and shown in Figure 2-5 on page 21.

Indicators	Function
and Controls
Power LED	The green power LED indicates that the DNH-6800 is
	powered on.
Channel LEDs	Each channel has a pair of LEDs, one green and one
	red.
	• The green LED lights when signal transmission is
	occurring on that channel.
	• The red LED briefly lights when a signal collision
	occurs on that channel.
Jamming LED	The jamming process occurs in conjunction with the
	collision detection feature and is indicated by a red
	LED.
Channel 0 Disable	Channel 0 is disabled with this jumper.
Jumper	This allows each DNH-6800 module within a single
	frame to act independently.
Configuration LED	In the event of a configuration failure, this LED
	remains continuously lit.
Reset Button	The Reset button is used to reset the DNH-6800
	module after a configuration failure.

20 6800/7000 Series - Distribution and Routing Products Installation and Opertion Manual