AlarmNet 7845C Manual de usuario descargar pdf (Pagina 21)

Glossary

Item Description

2-Way radio

internal tamper

This feature is currently not available.

AC Loss Indicates that the radio has detected a loss in its external supply line voltage through the

transformer or power supply, and is currently operating on battery backup power.

AC Loss Restore Indicates that external power to the radio has been restored.

A-Type

diagnostics

After a subscriber radio is installed, it begins to broadcast a diagnostic or check-in message at

regular intervals. These messages have two purposes:

1) When an AlarmNet-A radio is first installed, and before the radio becomes supervised, these

signals are logged by each network node that hears it and are used to determine how well the

radio is being heard by different nodes, and which one(s) should be responsible for

supervising it. The messages are also transmitted to the central station.

2) After the network has begun supervising the radio, the A-Type Diagnostics are used by the

network to supervise the radio and ensure that it is communicating properly, but are no longer

transmitted to the central station.

The A-Type Diagnostic message is sent to the Central Station at 12-hour intervals by each

network node that receives transmissions from any unsupervised subscriber. These diagnostics

will continue for as long as the subscriber remains unsupervised, and in certain instances where

assignment takes longer than usual, will even be reported over several weeks and beyond. Once

an account becomes supervised, it is no longer subject to diagnostic evaluation, and A-Type

Diagnostics will no longer be sent to the central station.

One-Way radios begin transmitting their A-Type Diagnostics soon after the radio is powered up.

They will transmit a diagnostic message either once per hour or every 15 minutes if the 6-hour

supervision option has been programmed. In order for the 6-hours supervision to work, AlarmNet

must be notified by noting so on the Contract or Request for Service for that subscriber.

Two-Way radios transmit their diagnostic message in response to polling signals transmitted by

the AlarmNet-A network. The network will transmit a polling signal for a particular radio once it

has heard a transmission from that radio. Such transmissions include the initial Power-On Reset

signals produced when the radio is first powered up and any asynchronous messages (e.g. alarms,

troubles, or “I’m not being polled” messages) generated.

Before a radio can be assigned supervision by the network, AlarmNet must

1) have a contract or request for service on file for that radio

AND

2) determine how well the radio is being heard by different network nodes.

While the radio is unsupervised, the account is said to be in a “Diagnostic Mode” and is assigned

a 12-hour Diagnostic Rate (or Diag Rate). The signals produced by the account during each 12-

hour period are evaluated in terms of their strength and consistency. During this 12-hour period,

any network node that hears transmissions from these radios will compile an A-Type Diagnostic

for delivery to the account’s Central Station. This means that the central station could receive

several A-Type Diagnostics for each newly installed subscriber account.

AlarmNet Messages Page 21

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