Operation Manual Part 1

Digital Liquid Cooled UHF
TV Equipment
Detailed operational description
9946 V1
45321648.01 104 A E
preliminary
30 / 131
Numéro / Number Doc. Rev. Lan
g
u.
16/06/2006
Pa
g
e
Information contained is this document is confidential, is THOMSON property and cannot be disclosed in whatever form without prior written authorization of THOMSON.
2.4. User interface operation
2.4.1. Outline
The operator can operate the transmitter from two locations:
♦ locally by using:
• a local control panel (PCL) which is positioned in the front panel of the main cabinet and
consists of:
- a screen in which various windows with transmitter commands and operational data are
displayed,
- indicator lamps which show operational status conditions,
- an LED system for showing the RF power level.
Note : Commands from the PCL can be locked (disabled) by using a password,
• an override switch (on/off) which is situated on the EXCITER/CPU interconnection mother
board.
♦ a remote location using a user interface which can be:
- a screen terminal connected via a serial link to the CPU card and which can display windows
on its screen which can be the same as or different from those on the PCL,
- a terminal consisting of status indicators for transmitter operation and commands which is
hard wired to the CPU card.
This user interface is positioned a few metres away from the transmitter (it can be about ten metres
away in the case of a serial link while it can be up to about 100 metres away in the case of a
hardwired connection).
A terminal can be connected to the Central Processing Unit and this provides facilities for examining
the transmitter log book.
2.4.2. Display control system
2.4.2.1. Outline
The "Display control system" controls:
♦ the display of data and messages on the windows of the PCL and of the remote user interface (in
the case of a serial link),
♦ the operation of the indicator lamps on the Local Control Panel (PCL),
♦ the status signals to the remote user interface (in the case of a hardwired connection).
The display control system receives all new status data and operator command data from the following
system operations: "polling of events", "polling of operator commands" and "command control
system".
The command control system receives manual commands from:
♦ the PCL, when the system is in local control and when the screen is unlocked, i.e. enabled by using
a password,
♦ the remote user interface when the system is in remote control mode.