AlarmNet 7845C Manual de usuario descargar pdf (Pagina 26)

Modulation Error This feature is currently not available.

Multiple nodes

down

This message is similar to the “Redundant supervision warning” except that it concerns more

than one network node. The specifics and conditions relating to the “Redundant supervision

warning” apply to this message as well, as does the method of identifying the node in question

and which subscribers it affects. See “Redundant supervision warning”

Network Alert

Message

Tells the C/S to refer to their fax machine for further instructions

This message is part of an automated method of informing the central station of Network related

issues that may impact it and/or its radio subscribers. Such issues may include conditions such as

a tower out of service for remedial or scheduled maintenance, or other unforeseeable performance

degradations that might result in missed or false signals.

This process consists of two parts. When an alert condition is triggered, the message shown will

be sent. At the same time this message is sent, a fax and/or e-mail transmission will be sent to the

central station, at a pre-determined number and/or e-mail address. The purpose of the “Network

Alert” message is to direct the operator or central station manager to refer to this fax or e-mail

transmission. The transmission contains important details about the “Network Alert”.

The receipt of this message should require the central station operator to refer to their fax

and/or e-mail for further information and instructions from AlarmNet. The faxed or e-mail

transmission should be read by an appropriately responsible Central Station Supervisor as it

contains critical information that may pertain to the safety of your subscribers, and will require

necessary action.

Pass-Fail An enhancement that allows the central station to verify the installation quality for AlarmNet-A

One-Way radio transmitters based on the radio’s signal strength and consistency as heard by the

network. When an installer triggers the test signal on the radio the central station will receive an

“A” or an “F” contained in an F-Type Diagnostic message. The letter “A” (“Acceptable”)

indicates the Repeat Count and the Signal Strength meet the minimum acceptable requirement. If

the Repeat Count or Signal Strength are lower then the minimum requirements the letter “F”

(“Fail”) will be displayed. This feature can be activated upon request for AlarmNet-A network

central stations only.

When a One-Way radio sends a test message, it typically generates 30 pairs of transmissions over

a 90 second period, producing a total of 60 messages. Once a network node hears the first

transmission, it begins to track and count them for an additional 90 seconds. For any node to

perform the Pass/Fail evaluation, it must hear at least one such transmission. The Repeat Count

is the number of messages heard of the 60 transmissions sent. The Signal Strength is an

average of those messages put on a scale of 1 – 10, where 10 is the best signal strength.

Unless the central station requests differently, the minimum acceptable levels of signal

strength and repeat count used in the evaluation are set to AlarmNet’s defaults, which are:

1) Repeat Count should be at least 30 transmissions (of 60)

2) Signal Strength must be 3 or greater (of 10)

3) Signals must be heard within the specified 90-second time frame.

Note that at the request of the central station, the default criteria can be changed to suit their needs

When a network node evaluates a set of transmissions for Pass-Fail, unless 30 or more total are

heard from the account within the 90-second time period, the radio will be failed, regardless of

AlarmNet Messages Page 26

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