Operation Manual Part 3

Digital Liquid Cooled UHF
TV Equipment
Operating modes and Control modes
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preliminary
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Numéro / Number Doc. Rev. Lan
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16/06/2006
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Information contained is this document is confidential, is THOMSON property and cannot be disclosed in whatever form without prior written authorization of THOMSON.
The following table illustrates how the status of an exciter changes after both a manual changeover
and an automatic changeover:
STATUS OF EXCITER AFTER A CHANGEOVER
MANUAL CHANGEOVER (SELECTED
EXCITER IS CHANGED)
AUTOMATIC CHANGEOVER (FAULT ON
SELECTED EXCITER CHANNEL)
SELECTED AND ON-
AIR
Reserve Selected and off-air
SELECTED AND OFF-
AIR
Reserve No change
RESERVE
Selected and on-air Not selected and on-air
INITIAL
STATE
OF
EXCITER
NOT SELECTED AND
ON-AIR
Selected and on-air No change
4.6. Transmitter control modes
The transmitter can be controlled either (a) in local control mode from a Local Control Panel (PCL), or
(b) in remote control mode from a remote user interface:
♦ in local control mode, only commands from the PCL will be recognised by the system. The remote
user interface is not enabled.
Note
: Commands from the PCL can be locked (disabled) by using a password.
♦ in remote control mode, only commands from the remote user interface will be recognised by the
system. The PCL interface is not enabled.