Hirschmann PAL 1 HU User Manual
Manual
PAL modulator 1 HU
version: 1. 2
print: March 96/BH_1760E
Hirschmann ü
Index
Introduction
1 - 1
General Notes
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2
Technical modifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2
Guarantee and Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2
Co p y righ t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2
Explanation of the warning and note symbols
. . . . . . . . . . . . . . . . . . . 1 - 2
Operation
2 - 1
Fun ct i on al d es cr i pti on
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 2
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 2
Block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 3
Video pro cessor VP 501/ 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 5
Vision/Sou nd m odulator BTM 501/ 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 7
Sound2 modulator T2M 501/ 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 9
IF matching unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 10
Interfaces
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 11
Module f rontside . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 11
Module r ear side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 12
Putti ng th e modu lator in to oper atio n
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1 3
Help with problems
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1 4
Video pro cessor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 14
Vision/sound modulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 14
Sound2 modulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 15
Index
Manual
0 - 2
PAL modulator 1 HU
ü
Service
3 - 1
Warn ing N ote
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2
Adjustments
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Functional check
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2
Han dlin g
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Equipment
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 3
Custom er Ser vic e
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Data sh ee ts
4 - 1
Data sheet index
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Data sheet identi fication
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 2
Index
Manual
ü
PAL modul ator 1 H U
0 - 3
Index
Manual
0 - 4
PAL modulator 1 HU
ü
Introduction
Introduction
Manual
ü
PAL modul ator 1 H U
1 - 1
General Notes
CAUTIO N:
Keep the manual handy all the time.
Technical modifications
The information contained i n this manual is subject to change at any time.
Guarantee and Warranty
The Hirschmann Company assum es no liability whatsoever (liability for material
defects, legal warrant y, guarantee for marketability, violation of existing pat ent
rights) with the exception of the guarantees indicat ing in this manual.
Copyright
This manual covers informat ion protected by copyright. All rights are reserved.
No part of this manual may be photocopied, otherwise reproduced or translated
into another language without the prior writte n consent of Hirschmann.
Explanation of the warning and note sy mbols
WARNING:
Indicates that non compliance with the cautionar y
measures listed could result in personal injury or
equipment damage.
CAUT IO N:
Indicates that non compliance with the cautionar y
measures listed could result in equipment damage.
NOTE:
Comments giving usefu l tips and information on
practical app lication.
Int rod uction
Manual
1 - 2
PAL modulator 1 HU
ü
Operation
Operation
Manual
ü
PAL modul ator 1 H U
2 - 1
Functional description
General
The PAL modulator is used in headend systems. It processes a scrambled
video signal and supplies the following IF signals:
l
IF vision carrier
l
IF so und carrier 1 (IF SC 1)
l
IF so und carrier 2 (IF SC 2)
l
IF so und carrier 1+ 2 (IF SC1 +2)
It can be used for stereo/2sound and mono transmission.
The PAL modulator functional group consists of:
l
Assy video processor
l
Assy vision/s ound modulator
l
Assy sound2 modulator
l
IF mat ching unit
l
IF locking
l
AUX assy
l
Re mot e re cor d int erf ac e
l
Rear panel assy
l
Data processor
Arrangement All of t he terminals of t he m odul e ar e located on the back of t he main f r ame.
The monitoring outputs and the interface for the Data processor (PC monitoring) are located in front of it. Adj ustm ent ele ments f or t uning are on the f r ont
panel and inside the module. The IF matching unit and the power supply are attached to the rear side of the main frame.
Monito ring Check of the most important par am eters can be made vi a t he PC m onit oring
software. Therefor a Dataprocessor DP 501-1 is nessesary, witch handle the
data communication between t he PAL modulator and the PC.
The following signals are availabl e on the rear side of the main frame on
connector "S TATUS"
l
video si gnal on the vi deo main sync. input is present
l
summary fault
Operation
Manual
2 - 2
PAL modulator 1 HU
ü
Block diagram
Block diagram of overall PAL modulator 1 HU
Oper ati on
Manual
ü
PAL modul ator 1 H U
2 - 3
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