User's Manual Part 2

Use of Ports Section 1

Element Management System (EMS) 4.0 User Manual

1.7 Use of Ports

EMS uses a DB-9 port with an RS-232 DCE interface, identified in the software

as the “EMS/Host/Remote Comm Port,” to communicate with LRCS network

elements. This port is used by the Maintenance Interface. It also provides the

information available in the NOC-NEM window within the Maintenance

Interface. A second serial port, identified in the software as the “NOC Comm

Port,” can optionally be used to provide NOC-NEM access to a remote terminal or

to a remote computer running a terminal emulator program. Figure 11 provides a

schematic of the ports from the perspective of the EMS software.

Physically the ports have the following requirements:

• EMS/Host/Remote Comm Port—This port connects to the PC-

compatible receptor on one end of the straight-through RS-232 cable

provided with the Digivance system. The DB-9 plug on the other end

of the cable, in a working system, connects to a DB-9 receptor either

on a Host Network Card (in a BTS server) or on an ADC remote unit.

When connected directly to a remote unit, the EMS system is used for

a single, collocated host/remote pair.

Define RF logical channels For each logical RF channel, you can select modulation

type and FCC channel number.

Check RF signal levels You can check signal levels of RF forward and reverse

path signals as measured on the PCIx card. Alarm indi-

cators provide details on any states preventing normal

signal transport.

Enter RF signal gain and for-

ward path attenuation

You can enter signal gain settings for RF forward path,

reverse path, and diversity path (if present) for any log-

ical RF channel. You can adjust forward path attenua-

tion affecting the strength of the RF analog signal

transmitted from the remote unit antenna.

Download controller and

FPGA files

Using the Prg Load window, you can download pro-

gram files to the host unit or remote unit. For each unit,

these files include a control program and a Field Pro-

grammable Gate Array (FPGA).

Table 1: Summary of EMS Tasks (Continued)

TASK DESCRIPTION