ATL Telecom AM2048 - Manual (Page 14)

ascom
telecom USER GUIDE AM768A/AM2048A
14
Issue 8
4. Installation
This chapter describes the basic steps that are required to set up a system involving the DSL Modem.
4.1 Connection of Protective Earth
If it is required to connect the G.703 port to a circuit that is defined as TNV, then a protective earth
must be connected to the earth bond stud on the rear panel. See the Compliance Notes and Safety
Instructions inside the front cover.
If the unit is power fed then a functional earth must be connected to the earth bond stud on the rear
panel to provide a discharge path to ground for ESD protection. See the Compliance Notes and
Safety Instructions inside the front cover.
4.2 Power On Sequence
With no DTE or line connected to the DSLU on power up, the following LED sequence will be
displayed:
Urgent
Non-Urgent
Test
Power
1 2 3 4 5 6 7 8 9 10
Prior to the sequence starting, a random pattern may appear momentarily.
During sequence 1 to 7 the LEDs are illuminated in turn as an LED confidence test.
During stage 8 the test LED flashes as the internal self-test sequence is completed. The flashing will
normally last for about 4 seconds, however, if a new application has been loaded this time will be
extended by about 10 seconds while a backup copy of the application is made.
With no external connections the unit will sense the loss of external signals, raise the urgent alarm
and stop at stage 9.
When the system has been installed and is working correctly, the unit should move to stage 10.
4.3 Logging On
Connect a VT100 terminal (or PC running a VT100 emulation program) to the 9-way serial port on the
rear of the unit. The log on screen should appear automatically once the DSLU detects the terminal.
Type ‘C’ to select Configuration, then press ‘Enter’
Type ‘ascom’ the default password setting, then press ‘Enter’
The top level menu system displays the sub-menus available.
For a full description of the menu system, refer to the ‘VT100 Management User Guide’.