User guide

VMS Network Configuration

3-12 VMS User Guide

Setting the Alarm Masks

Network alarms must be set to insure an alarm alerts the operator to an actual

problem. If there are spurious alarms, or alarms which have no operational

meaning the operator will become desensitized and critical network failures can

be missed. This section addresses masking alarms that represent normal

network conditions. VMS allows the masking of these nuisance alarms. Do not

skip this step if you want your operators to manage the network pro-actively and

respond quickly to alarms.

In a Vipersat network, there are burst controllers that are locking and unlocking

multiple times per second, and expansion units whose normal parked or quies-

cent state is to be unlocked. Perform the following procedure for all network

units that function as either a Burst Controller or an Expansion unit.

Note: On SLM-5650A modems, masking is pre-configured when set to Hub

and Selective TDMA is enabled.

From the Tree View, select the unit and open the Properties window as shown

in figure 3-10.

For CDM-570/570L and CDD-56X units, right-click on the unit icon and

select Properties from the drop-down menu.

For SLM-5650A units, right-click on the demodulator icon and select

Properties from the drop-down menu.

2. Select Mask Unlock Alarm, then click on OK.

3. Right-click on the unit’s icon again and select Force Registration to activate

the flag.

NOTE