Motorola P Series Manual de venda - Página 31

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Detailed Features/Benefits Description

When relevant activity is discovered on one of the scan list channels, the scanning process is

temporarily suspended and the radio is said to be in "Landed Scan Mode". When the scan has

"landed" on a channel, and the squelch conditions are met, the speaker unmutes and the radio user

hears the conversation on that channel.

When the conversation ends, the radio waits for further activity for a programmable period of time

(the duration of the "Scan Hang Timer"). If no further activity is discovered, the scan process is

resumed and the radio switches back into Active Scan Mode.

Scan TalkBack enables the radio user to join in with a conversation discovered during scanning. The

radio user has until the Scan Hang Timer expires to reply to a voice communication on the relevant

landed channel.

An alternative to replying on the landed channel is to specify a Designated Tx Channel using the

CPS. To help understand how this works, consider the following situation:

A radio user initiates scanning by pressing one of the programmable side buttons and the

radio lands on channel 2, where a relevant conversation is taking place.

The radio user wishes to join the conversation and pushes the PTT button. Channel 4 has

been set as the Designated Tx Channel and hence the radio user begins transmitting on

channel 4 (which would typically be the radio user's "home" or "emergency" channel)

To simplify the radio operation for your customer's staff, AutoScan can be programmed on a per-

channel basis. This feature automatically activates Scanning when the radio user switches to a

channel with AutoScan enabled.

To further enhance the scanning process, it is possible to nominate the Þrst channel in the scan list

as a Priority Scan Channel. Typically, the Priority Scan Channel is an "emergency" or "supervisor"

channel used for urgent or important communications.

If a Priority Channel has been appointed, it is checked for activity after each other member channel

is checked. ie the order in which the radio checks each Scan List channel for activity is:

Scan List Channel 1

Scan List Channel 2

Scan List Channel 1

Scan List Channel 3

Scan List Channel 1

Scan List Channel 4

Scan List Channel 1

etc

Priority Scanning ensures that your customer's important calls are received.

The Priority Scan Channel is regularly monitored, even when the radio has landed on a non-priority

channel. ie, when activity has been discovered on a non-priority channel and the conversation is

being listened to, the radio continually switches to the priority channel to check for activity.

This continual checking does, however, cause momentary breaks in the audio being received from

the non-priority channel. The time interval between checks on the Priority Channel is determined

during programming by the "Priority Sample Time"

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