Triax CGS-2 764 C Assembly Instructions Manual

Head-End Digital Modulator

4 x QAM

CGS-2 764 C

Art. No. 325029 GB

Assembly Instructions

As well as this supplementary Assembly Instructions,
the Assembly Instructions for the CSE2800 apply.

TRIAX - your ultimate connection

Contents

1 Safety regulations ..............................................................................................3

2 General information ..........................................................................................4

2.1 Scope of delivery ............................................................................... 4

2.2 Meaning of the symbols used ............................................................... 4

2.3 Technical data.................................................................................... 5

2.4 Description ........................................................................................ 6

2.5 How the TPS module works .................................................................. 7

Station filter ....................................................................................... 7

Changing the Transport stream and ORGNET-ID .................................... 7

Changing the NIT ............................................................................... 7

2.6 Explanation of the term "symbol rate" ................................................... 7

Transponder with a very low symbol rate (SCPC station) ......................... 8

Defined symbol rates .......................................................................... 8

3 Installation ........................................................................................................8

3.1 Retrofitting a CA module ..................................................................... 9

3.2 Installing the QAM module ................................................................ 10

3.3 Connecting the QAM module ............................................................ 11

4 The control panel at a glance ........................................................................... 12

4.1 Functions of the control panel buttons .................................................. 12

4.2 Menu items ...................................................................................... 12

5 Programming ..................................................................................................13

5.1 Preparation...................................................................................... 13

5.2 Notes on level setting ........................................................................ 13

5.3 Programming procedure .................................................................... 14

5.4 Programming the QAM module .......................................................... 16

Selecting the module / channel strip ................................................... 17

Output settings ................................................................................. 17

Modulator on/off, Level ............................................................... 18

Channel / Frequency .................................................................. 18

Output symbol rate, QAM modulation

Substitute signal in the case of an incorrect input signal ................... 21

Input settings .................................................................................... 22

LNB oscillator frequency, Input ...................................................... 22

Input symbol rate, DVB mode ....................................................... 23

Input frequency ........................................................................... 23

Operation with a CA module ....................................................... 25

Station filter ................................................................................ 25

PID monitoring ............................................................................ 26

CA module ................................................................................. 27

Economize descrambling capacity ................................................ 28

.............................................20

- 2 - CGS-2 764 C

Option settings ................................................................................. 29

Transport stream ID and ORGNET-ID ............................................. 29

BAT/SDT-OTHER tables ................................................................ 30

Deleting a PID ............................................................................ 30

Renaming a PID .......................................................................... 31

Output data rate .............................................................................. 32

Network Information Table (NIT) ......................................................... 32

Factory reset .................................................................................... 34

Saving data ..................................................................................... 35

6 Final procedures .............................................................................................. 36

7 Channel and frequency tables ..........................................................................37

1 safety regulat i o n s

• The standards EN/DIN EN 50083 resp. IEC/EN/DIN EN 60728 must be
observed.

• Do not perform installation and service work during thunderstorms.

• Assembly, installation and servicing should be carried out by authorised
electricians.

• Switch off the operating voltage of the system before beginning with assem­bly or service work.

• Avoid short circuits!

• Observe the relevant standards, regulations and guidelines on the installa­tion and operation of antenna systems.

• To ensure electromagnetic compatibility, make sure all connections are tight
and the covers are screwed on securely.

• No liability is accepted for damage caused by faulty connections or inap­propriate handling of the device.

Check the head-end station CSE 2800 according to the safety instructions

listed in their assembly instruction.

Take precautions to prevent static discharge when working on the device!

Electronic devices should never be disposed of in the household rubbish. In

accordance with directive 2002/96/EC of the European Parliament and the
European Council from January 27, 2003 which addresses old electronic and
electrical devices, such devices must be disposed of at a designated collection
facility. At the end of its service life, please take your device to one of these
public collection facilities for proper disposal.

- 3 - CGS-2 764 C

2 general infor m a t i on

2.1 sCo pe of d elivery

1 Head-end Digital Modulator QAM "CGS-2 764 C"
1 RF connection cable
1 CD (assembly instructions)
1 Brief Assembly Instructions

2.2 meani ng of th e sym b o l s used

Important note

—> General note

–
–

• Performing works

/
/

Optional use of the buttons

- 4 - CGS-2 764 C

2.3 teChniCal dat a

The requirements of the following EU directives are met:
2006/95/EC, 2004/108/EC

The product fulfils the guidelines and standards for CE labelling.

Unless otherwise noted all values are specified as "typical".

RF input

Frequency range: ....................................................... 910 … 2150 MHz

Level range: ............................................................ 60 dBμV … 80 dBμV

DVB-S modes: ............................................ QPSK 1/2 , 2/3 , 3/4 , 5/6 , 7/

DVB-S2 modes: ...................QPSK 1/2 , 3/5 , 2/3 , 3/4 , 4/5 , 5/6 , 8/9 , 9/10

8PSK 3/5 , 2/3 , 3/4 , 5/6 , 8/9 , 9/

Symbol rate DVB-S: .......................................... QPSK: 1 … 45 MSymb/s

Symbol rate DVB-S2: ....................................... QPSK: 4.5 … 45 MSymb/s

8PSK: 4.5 … 45 MSymb/s

LNC 12V supply/input .........................................................max. 300mA

RF output

Frequency range: ............................................. 42.0 MHz … 868.0 MHz

Channels: ............................................................................ S21 … C69

Output level: ............................................................................. 83 dBμV

Output impedance: .........................................................................75 Ω

8

10

Connections:

SAT inputs: ............................................................................ 2 F sockets

RF output: .............................................................................. 1 F socket

Connection strip (20-pin): .......................f

or supply voltages and control circuits

Common Interfaces: .....................2 (several channels can be descrambled).

- 5 - CGS-2 764 C

2.4 des Cription

The Head-end Digital Transmodulator QAM

called QAM module converts four DVB-S/DVB-S2
four DVB-C (

QAM)

modulated data streams.

"CGS-2 764 C"

, in the following

modulated data streams into

The

QAM module

has two SAT-IF

inputs and one RF output.

The

QAM

module is equipped with four channel strips ("A" … "D"). The chan­nel strips consist of the digital SAT tuners, the digital signal processing levels
and an output converter. For channel strips A/B resp. C/D adjacent channel
setting is fixed.

Using adequate CA modules scrambled channels can be descrambled via

channel strips "A" and "C". The control of the module takes place via the con­trol unit of the

head-end station.

Four LEDs indicate if the respective channel strip is switched on (LED illumi-

nates) or off, and also provide an indication of the signal quality based on their
colour.

The integrated TPS module (Transport Stream Processing) processes the data

from the demodulated transport streams.

Channel as well as frequency setting is possible for modulators "A" and "C".

The modulators "B" and "D" work at a spacing of + 8 MHz to modulators"A"
and "C". Herein only frequency setting (frequency spacing of channel strips
"A <–> B" and "C <–> D") is possible to reduce the bandwidth at signals of
low data rates.

The QAM modulated RF output signals are sent through the RF output of the

QAM module

to the output collector.

When the head-end station is switched on, the two-line LC display shows the

"SETUP" menu and the software version of the control unit. The head-end sta­tion output level can be adjusted in this menu.

To operate the

station) must be "V 10" or higher. The operating software of the
and the

QAM module

the software version of the control unit (head-end

QAM module

head-end station can be updated using a PC or notebook and the
software "BE-Flash" via the 9-pin D-SUB socket on the head-end station. You
can find the current operating software for the head-end station
module,

the software "BE-Flash"

and the current assembly instructions

and the QAM

on the

website "www.triax.com".

The

QAM module

is designed exclusively for use in the CSE 2800 head-end

station.

- 6 - CGS-2 764 C

2.5 how the tps module w o rks

After decoding QPSK- or 8PSK-modulated signals, the demodulated data

streams can be accessed via the integrated TPS module. These data streams,
also called transport streams, contain several stations with all their compo­nents (video, audio, data and service information), which can be changed
using the TPS module.

station fi lte r

Individual stations can be deleted. This reduces the data rate and, conse-

quently, the output data rate.

Ch a n ging the tr ansport s t ream and orgnet-id

The transport stream ID can be changed. If the stations of a transponder are

split into the transport streams of different channel strips, a new identification
must be allocated to the "new" transport streams to realise the channel search
of the settop boxes connected without mistakes.

If the ORGNET-ID is changed a new NIT must be generated.

Ch a n ging the nit

The transport stream contains data in the form of tables which the receivers

evaluate and require for convenient use. The TPS module can adjust the "Net­work Information Table" (NIT) to accommodate the new stations output data
(incl. LCN). The "NIT" contains data which is required by the set-top boxes
connected to the cable network for the automatic search feature.

2.6 exp l anat i o n of the term "symb ol rat e"

Modulation schemes such as QPSK and QAM transmit multiple bits simultane-

ously. These are referred to as symbols. In addition to the user data flow which
transmits video and audio information, error correction bits are transferred.
The FEC number states the ratio of user bits to the complete transmitted bits.
The output symbol rate is calculated as follows:

256-QAM: SR (A) = FEC x 1/4 x SR (E)
128-QAM: SR (A) = FEC x 2/7 x SR (E)
64-QAM: SR (A) = FEC x 1/3 x SR (E)
32-QAM: SR (A) = FEC x 2/5 x SR (E)

16-QAM: SR (A) = FEC x 1/2 x SR (E)
4-QAM: SR (A) = FEC x 1/1 x SR (E)

- 7 - CGS-2 764 C

Example:

Output symbol rate SR (A) 64-QAM,
Input symbol rate SR (E) = 27,500

kSymb/s

FEC= 3/4,

SR (A)

transponde r with a very l ow symbol rat e (sCpC station)

The extremely low data rate means that the output symbol rate is very low. If

de fined s ymbo l rat es

Some cable operators specify a fixed symbol rate (e.g. 6,900 kSymb/s).

= 3/4 x 1/3 x 27,500

—> If no "FEC" is stated in the station lists, it can be assumed to be

"FEC = 3/4".

there are reception problems with different digital receivers, set output symbol
rate to a higher value.

kSymb/s

=

6,875 kSymb/s

3 installation

– Ensure the head-end station is mounted so it will not be able to vibrate.

Avoid, for example, mounting the head-end station onto a lift shaft or any
other wall or floor construction that vibrates in a similar way.

– Before installing or changing a module, switch off the head-end station or

unplug the power cable from the mains power socket.

– Take measures to protect against ESD!

• Open the housing of the head-end station in accordance with the assembly
instructions for the CSE 2800.

- 8 - CGS-2 764 C

3.1 retr o f itting a Ca module

The cassette is equipped with two common interfaces. This allows you to con-

nect two CA modules for various scrambling systems and service providers.
Scrambled channels can only be descrambled with a CA module suitable for
the scrambling system and the corresponding smart card. The smart card con­tains all the information for authorisation, descrambling and subscription.

– Check with the distributor or manufacturer of the CA modules to be used

to ensure that they are suitable for descrambling several channels.

– The hardware and software of this cassette have been thoroughly prepared

and tested.

– Any changes made by programme provider to the structures in the pro-

gramme data might impair or even prevent this function.

– When working with the CA modules, please read the corresponding oper-

ating manuals from the respective providers.

• Insert the smart card

1 into the CA module 2 so that the chip 3

on the

smart card faces the thicker side (top) of the CA module (fig. 1).

• Push the CA module 2 without canting into the guide rails 4 of the com­mon interface 5 according to the following picture and contact it to the
common interface.

5

PCB

CI Tuner A

CI Tuner C

4
2
3
1

Fig. 1

—> If the QAM module is inserted in the head-end station, the left com-

mon interface is assigned to tuner A, the right one to tuner C.

- 9 - CGS-2 764 C

3.2 ins tal ling th e Qam module

–

Check that the plug contacts of the CA module are tightly seated in the
terminal strips on the

common

interface of the

QAM

module and make

sure there is reliable contact.

– When installing a module, make sure that it is inserted in one of the long,

numbered grooves in front of the contact strip on the board at the rear wall
of the housing.

– The shorter, non-numbered grooves without a contact strip on the board at

the rear wall of the housing are for add-on modules only.

• Open the housing of the head-end station in accordance with the assembly
instructions for the CSE 2800.

• Open the locking device 1 in the direction of the arrow (fig. 2).

1

Fig. 2

• Insert the QAM module in grooves A and B of an open slot (with contact
strip on the board at the rear wall of the housing) and gently slide it into
the head-end station until it makes contact with the board on the rear wall
(fig.3).

• After installing the QAM module close the locking device 1 in the direction
of the arrow (fig. 3).

B

A

Fig. 3

- 10 - CGS-2 764 C

1

3.3 Co nneCting t h e Qam module

C
D

E
F

G

Fig. 4

•

• After programming, connect the modulator output E to one of the input

Connect SAT-IF inputs C (input "In A") and D (input "In B") on the

module (fig. 4) to the preinstalled Fterminals in the rear wall of the head­end station via the cable inlets F using RF cables made on-site (length
approx. 80 cm) or if applicable connect each to one of the outputs of a
retrofitted SAT-IF input distributor.

sockets G of a retrofitted output collector.

QAM

- 11 - CGS-2 764 C

4 the Control p a n e l a t a g l a n C e

4.1 fu nCtions o f the Co ntrol panel b u t tons

To adjust values and
functions

S

M

To move the cursor

To save the programmed
data
To switch to the next
menu

4.2 menu i t ems

Program the

QAM

module using the buttons on the head-end station control

panel. The menus appear on the two-line display of the control panel.

The parameters and functions to be set are underlined.
With the button select the channel strip / other modules.
You can use the button to select the following menu items:

– Output signal settings:
Modulator on/off, level
Output channel (modulators A and C)
Output frequency (modulators A…D)
QAM modulation
Substitute signal
– Input signal settings:
LNB oscillator frequency
Input symbol rate
Input frequency
Station filter
CA module
Economize descrambling capacity
– Options:
Transport stream and ORGNET-ID
BAT, STD-other
Deleting a PID
Renaming a PID
– Data rate
– Network Information Table (NIT)
– Factory reset
– Save data

- 12 - CGS-2 764 C