Operation Manual Part 3

Digital Liquid Cooled UHF
TV Equipment
Description / Test points / Location of units
9946 V1
45321648.01 104 A E
preliminary
107 / 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.
POWER
SUPPLY
1
PAL
(2)
(1)
UC
( )
02/041b (e)
( )
(*)
HYDRAULIC
CABINET
(1) : AD_UB < 0…10 > is an 11-way multiplexed serial signal which defines a variable value
throughout the equipment,
signal RW_UB identifies a read or write cycle for the CPU board,
signal CS_UB (serial),
signal DN_INF_UC on 1 wire for reading a logic signal,
signal DN_INF_UC on 1 wire for reading an analogue signal,
(∆) :
signal DN_COM_UB.
(2) : signal AD_BA < 0…3 > uses 4 wires for identifying an equipment unit parameter, i.e. a total of 16
parameters,
signal CS_BA selects an equipment unit (1 wire for each equipment unit).
(*) : signal DN_INF_UC on 1 wire for reading a logic signal,
(
•) :
signal DN_INF_UC on 1 wire for reading an analogue signal,
signal DN_COM_BA.
Read Cycle
The CPU sends signal AD_UB < 0…10 > and checks that the read cycle has started via signal
RW_UB ; it validates signal CS_UB before sending validation confirmation to the multiplex board.
The multiplex board decodes the number within the signal AD_UB < 0…10 > via the PAL unit and
generates the following signals:
♦ AD_BA < 0…3 > (identification of an equipment unit parameter),
♦ CS_BA (selection of equipment unit).
The address AD_BA < 0…3 > is sent to all the equipment units, but only the equipment unit selected
by the signal CS_BA will reply with a readout.