Ericsson TT1222 Guia do Utilizador descarregar pdf (Página 196)

Using the TT1222 with the Director System

E.2 Response to Over-air Commands

E.2.1 Scope of This Section

This section describes the receiver’s response to a selection of over-air commands.

E.2.2 Display On-screen Display (OSD) Messages

Displays a text string on the LCD front panel. The display will show the NCP

MESSAGE. The message is displayed for a set time or until cleared from the head-

end.

Note: The viewing Monitor does NOT display messages. All user interaction is via

the front panel.

E.2.3 Store Carrier Data

Stores a particular service as a preset. Subsequently, the head-end can force a

service selection from this preset. Director presets are different to those set up in

LOCAL ONLY mode. They are not visible to the user on the front panel LCD.

E.2.4 Set Power up Carrier

Set’s the receiver Power up service. If the Power Up Carrier has been defined and

the receiver is in OAC control mode, these will be the service parameters used after

power up. If this is not defined or the control mode is not OAC, then the current

service parameters used when the receiver was last powered on will be used.

If the service fails to decode, the receiver will tune to the Emergency Home Carrier

if valid.

E.2.5 Force Carrier Retune

Force’s the receiver to tune to a different frequency and service. The command

requires the service selection, frequency, LNB, symbol rate and other tuning

parameters, or this could be a service previously stored by the Store Carrier Data

command.

The timeouts allow the receiver to revert back to the previous service after the

timeout has expired. Use a timeout of at least 15 seconds to allow the receiver to

successfully tune and decode the new service. Where the timeout is 0 seconds, the

receiver will permanently tune to the new service and not revert back to the previous

service.

If the service fails to decode, the receiver will tune to the Emergency Home Carrier

if valid.

EN/LZT 790 0002/2 R1A

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Ericsson TT1222 Guia do Utilizador Página 196