AlarmNet 7845C Manual de usuario descargar pdf (Pagina 27)

the signal strengths involved. If 30 or more transmissions are heard within the specific time

period, they will then be evaluated based on the average strength of the received signals. If it is

equal to or greater than the specified threshold of 3, the account will be passed.

To use the Pass/Fail to evaluate the transmission strength of a radio, first verify that the central

station is equipped for the Pass/Fail evaluation. Next, place a No. 7720 One-Way radio in “test”

using either of the following methods:

1) With the No. 7720 Programming Tool

Connect the No. 7720 Programming Tool to the jack on the No. 7720. Press Shift + T (the

TEST command) to initiate the radio’s production of 60 test messages.

Note: If it is desired to end the test transmissions before the conclusion of the cycle, simply

press Shift + T again. Note that doing so will likely cause the account to be failed in the

resulting Field-Triggered Diagnostic message(s) if the required Repeat Count has not been

met.

b) Manually Triggered Test

With the radio producing no transmissions (its green LED will be OFF), momentarily connect

a wire jumper between its +DC CHARGING VOLTAGE terminal and its TEST INPUT

terminal to initiate the sequence of 60 test messages.

Note 1: Be sure that the radio’s test input is programmed for normal (not inverted) operation.

Note 2: Before initiating the test message, be sure the radio’s yellow LED is the only LED lit

and is flashing once per second, indicating that the radio is ready to transmit. Slower flashing

typically indicates an uncharged battery.

The technician should contact either the central station or AlarmNet to obtain the results. Note

that any test process, is not a priority within the network and it may take several minutes (or

more), before the network will deliver the resulting F-Type Diagnostic message.

Note: The Pass-Fail feature will not work for the model 7620 One Way radios since these radios

transmit an insufficient number of such messages within the specified “time window” required for

the evaluation.

See also “F-Type Diagnostics”

Power-on reset This message reports that the radio has lost both AC and battery power and then had either the

AC or the battery restored, causing the radio to reset.

The only time that this message is normal is when:

 The account is a new install and the installation personnel are still on premise.

 Service personnel are on premise and the account has been put on test.

 The loss of all power was due to an explainable and verifiable event that can be immediately

confirmed.

For ‘A’ radios, it is possible that a legitimate radio may have been removed from service and

replaced with another radio programmed to the same subscriber ID number. Such a new radio

may or may not be connected to the alarm control at the subscriber’s premises. If an illegitimate

radio that is not connected to the alarm is used to replace a legitimate radio, strictly for the

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AlarmNet 7845C Manual de usuario Pagina 27