Grundig PHDQ 2002 BC User Manual

A

CLASS

KLASSE

Grundig SAT SystEms

Assembly Instructions

A

CLASS

KLASSE

HDTV Digital QAM

PHDQ 2002 BC
PHDQ 3002 BC

PHDQ 4002 BC
PHDQ 5002 BC

A

A

KLASSE

KLASSE

CLASS

CLASS

GSS
Grundig SAT Systems GmbH

Assembly Instructions

English

Beuthener Straße 43
D-90471 Nuremberg

Phone: +49 (0) 911 / 703 8877
Fax: +49 (0) 911 / 703 9210
Email: [e-mail]
Internet: http://www.gss.tv

- 2 -

Contents

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

2 General information ............................................................................................3

2.1 Packing contents .................................................................................... 3

2.2 Technical data ....................................................................................... 4

2.3 Description ........................................................................................... 5

2.3.1 Manual display of the software version .......................................... 6

2.3.2 How the TP module works ............................................................ 6

2.3.3 Explanation of the term “symbol rate” ............................................ 7

3 Assembly ............................................................................................................ 8

3.1 Installing the Cassette ............................................................................. 8

3.2 Connecting the Cassette ......................................................................... 8

4 The operator control panel at a glance ................................................................. 9

4.1 Menu items ........................................................................................... 9

4.2 Operator control panel ........................................................................... 9

5 Programming .................................................................................................... 10

5.1 Preparation ..........................................................................................10

5.2 The menus at a glance ..........................................................................11

5.2.1 The menu of channel strip B .........................................................12

5.3 Cassette programming ..........................................................................13

Selecting the Cassette ...........................................................................13

Switching the channel strip.....................................................................13

To query software versions: ...................................................................14

Setting the output channel (only Bx…A) ...................................................14

Modulator settings (only Bx…A) .............................................................16

Setting output level of the channel strips (only Bx…A) ................................16

Producing a QAM signal for testing (only Bx…A) .....................................17

Inverting the user signal (only Bx…A) ......................................................17

QAM monitoring (only Bx…A) ...............................................................18

Setting the LNB oscillator frequency ........................................................18

Setting the input symbol rate and the DVB mode ......................................19

Setting the input frequency (transponder frequency) ................................. 20

Setting the QAM modulation value (only Bx…A) ......................................21

Setting the stuffing (only Bx…A) ............................................................. 22

Saving settings .................................................................................... 23

- 2 -

- 3 -

1 Safety regulations

Important

• Assembly, installation and servicing must be carried out by an authorised
electrician.

• Switch off operating voltage before the start of assembly or service work or
pull out the mains plug.

• Install the system …

- in a dust-free, dry environment

-

so that it is protected from moisture, vapours, splashing water and damp

- somewhere protected from direct sunlight

- away from the immediate vicinity of heat sources

- at an ambient temperature of < 50 °C.

•

Make sure the device is adequately ventilated.

Do not cover the ventilation slots.

• Beware of short circuits!

• No liability is accepted for damage caused by faulty connection or inexpert
handling.

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

•

Earth the SAT receiver using the equipotential bonding rail in accordance with

DIN EN 50083 and VDE 0855.

• Do not perform installation and service work during thunderstorms.

Take action to prevent static discharge when working on the device.

2 General information

2.1 Packing contents

1 Cassette PHDQ 2002 BC or PHDQ 3002 BC or PHDQ 4002 BC or
PHDQ 5002 BC
2 HF connection cables
1 Assembly instructions (on CD)
1 Measuring log

- 3 -

- 4 -

2.2 Technical data

The devices meet the following EU directives:

73/23/EEC, 89/336/EEC

The product fulfils the guidelines and standards for CE labelling.

HF input:
Frequency range: 950 … 2150 MHz

Frequency raster: 1 MHz
Level range: 35 dBµV … 80 dBµV
DVB-S modes: DVB-S 1/2 , 2/3 , 3/4 , 5/6 , 7/8
DVB-S2 modes: QPSK 1/2 , 3/5 , 2/3 , 3/4 , 4/5 , 5/6 , 8/9 , 9/
8PSK

3

/5 , 2/3 , 3/4 , 5/6 , 8/9 , 9/
Symbol rate DVB-S: QPSK: 2 … 45 MSymb/s
Symbol rate DVB-S2: QPSK: 10 … 30 MSymb/s
8PSK: 10 … 31 MSymb/s

HF output:
PHDQ 2002 BC

Frequency range: 60 MHz … 86 MHz

PHDQ 3002 BC

Frequency range: 112 MHz … 306 MHz

10

,

10

PHDQ 4002 BC

Channels: S21 … S41
Frequency range: 306 MHz … 466 MHz
Channel raster: 8 MHz

PHDQ 5002 BC
Channels: C21 … C69

Frequency range: 474 MHz … 858 MHz
Channel raster: 8 MHz

Output level: Typ. 90 dBµV
Output impedance: 75 Ω, nominal

- 4 -

- 5 -

Connections:

SAT inputs: 2 F-connectors
HF output: 1 IEC socket, female
Connection strip (10-pin):
Socket RS 232:

For supply voltages and control circuits
Update interface

2.3 Description

The Cassettes convert two QPSK
lated data flow.

The Cassettes are controlled via the head end. Each Cassette

-modulated data flows into one QAM-modu-

has two inputs and one HF output, as well as an integrated multi-transport flow
processor for stuffing, PID pass, drop and service filtering.
For these Cassettes, information from a barker channel can be added or ex­changed with a transport flow (MTP function, Drop- and service filter). For this
purpose, there are two autonomous reception tuners and one modulator on
which the modified transport flow can be transmitted as a QAM-modulated
signal.
The SDT and PAT tables are automatically generated. All data relevant to the
operation of the Cassette is registered in a logbook with a maximum of 500
entries.
The operating software of the Cassette can be actualised via an external 9-pin
SUB-D-socket, using a PC or notebook, (software “

BE-Flash

”) or settings in the
channel strips “A” (service channel) and “B” (barker channel) of the Cassette
(PC software “
rent operating software of the Cassettes on the website “

MTP

”, component of software PSW 1000).

You can find the cur-

http://www.gss.tv

”.
The prepared input signals are transmitted to the HF output collector of the head
end via the HF output socket. The output level of the Cassettes can be set with the
level regulator (max. –20 dB) at the output collector of the head end.
After the head end has been switched on, the software version of the control
unit is displayed briefly in the two-line LC display and afterwards the type of
Cassette of the first slot.
Approximately five minutes after the last button has been pressed, the software
version of the control unit is displayed.
The Cassettes are designed for use in the following head ends:
– PSU 12
– PSU 8
– PGT 8

- 5 -

- 6 -

2.3.1 Manual display of the software version

If necessary, you can call up the display of the software version of the control
unit manually:

• Hold down any two keys of the control unit simultaneously until the display

goes dark and

the software version, e.g. “

V. 34

”, is displayed.

2.3.2 How the TP module works

When converting the QPSK-modulated signal to a QAM-modulated cable signal,
the demodulated data stream can be accessed via the integrated TP module. This
data stream, also called transport stream, contains several stations with all their
components (video, audio, data and service information), which can be changed
using the TP module.

The individual functions
Station filter

Individual stations can be deleted. This reduces the data rate and, consequently,
the output symbol rate.

Stuffing

The transport stream is padded out using what is known as zero data. This
increases the data rate and, consequently, the output symbol rate. Changing
the output symbol rate suitably alters the bandwidth used (halving the output
symbol rate roughly halves the bandwidth at the output).

Changing service information

The transport stream contains data in the form of tables which the receivers eval­uate and require for convenient use. The TP module can change the “Network
Information Table” (NIT). The NIT contains data which the set-top box needs for
the automatic search function.

- 6 -

- 7 -

2.3.3 Explanation of the term “symbol rate”

High-quality modulation methods like QPSK and QAM can encrypt several
bits as a single transferred and received symbol. The user data stream contains
the audio and video signals of a station and is thus permanently assigned. If
the value of the modulation and therefore the number of bits per symbol is in­creased, the symbol rate falls compared to the user bit rate.
Formulae for calculating the output symbol rate “SR (A)” at a fixed input symbol
rate “SR (E)” and “FEC”.

1

256-QAM: SR (A) = FEC x

/4 x SR (E)

128 -Q A M: 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- QA M: SR (A) = FEC x 1/2 x SR (E)
4-QAM: SR (A) = FEC x 1/1 x SR (E)

Example:

Output symbol rate 64-QAM,

FEC= 3/4,

Input symbol rate SR (E) = 27,500 kilosymbols per second

SR (A)

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

SR (A)

=

6,875 kilosymbols/s

Note:

If no “FEC” is stated in the station lists, it can be assumed to be
“FEC = 3/4”.

Reception from a transponder with a very low symbol rate
(SCPC station)

The extremely low data rate means that the output symbol rate is very low. If
there are reception problems with different digital receivers, set QAM modula­tion with stuffing to a higher value.

Defined symbol rates

Some cable operators specify a fixed symbol rate (e.g. 6,900 kilosymbols per
second).

- 7 -

- 8 -

3 Assembly

+24

BREITBA

3.1 Installing the Cassette

Warning

Before inserting or changing Cassettes, pull the mains plug of the head end

out of the mains socket.

Unscrew the fastening screws from the bracket in the head end.

•

• Insert the Cassette into a free slot and push it into the housing.

• Align the Cassette and gently make it contact with the connections of the

circuit board and the HF bus bar.

• Fasten the Cassette with the 1 screws.



C101

L104

L100

L101

L103

C100

LNC-

+18V

ROT

GRUEN

+18V

Anschl.

CASSETTE

CASSETTE

CASSETTE

CASSETTE

CASSETTE

CASSETTE

CASSETTE

CASSETTE

CASSETTE

CASSETTE

CASSETTE

CASSETTE



INPUT OUTPUT OUTPUT INPUT

3.2 Connecting the Cassette

•

Connect the HF input cable with the input sockets “

(channel strip A) and “

•

Connect the head end to the mains power supply.

—> The Cassette is now ready for operation.

INPUT B

INPUT A

” 1 (channel strip B).

 *1/Ê



- 8 -

 *1/Ê



” 2

,-ÓÎÓ



- 9 -

Note:

The operating software of the Cassette can be updated via the socket

“RS 232” 3 (9-Pin-Sub-D) by means of a PC or notebook.

Use the “BE-Flash” software as the update software. You can make drop

and pass filter settings in the channel strip “B” using the “MTP” PC software.
You can find the current operating software of the Cassettes on the website
“

http://www.gss.tv

”.

4 The operator control panel at a glance

4.1 Menu items

Program the Cassette using the keys on the head end control unit. The two-line
display of the control unit then shows the menus.
You can select the following main menu items

with the

– Cassette and channel strip
– Output channel
– LNB oscillator frequency
– Symbol rate
– Input frequency
– QAM modulation
– Stuffing

button:

BE–Remote

PROFESSIONAL

V. 3 4

4.2 Operator control panel

You can individually select the menus and menu items step-by-step using the

key pad of the head end:

AUDIO

◀

/

scrolls forward through the menu

scrolls backward through the menu

▶

select parameters in the menus

set values, initiate actions

selects sub-menus

M saves all entries

The parameters to be set are displayed underlined (cursor).

- 9 -

- 10 -

5 Programming

+24

BREITBA

+24

BREITBA

The following examples show how the

PHDQ 4002 BC

Cassette is programmed;
the output channels can be set from S21 … S41. Set the other Cassettes listed
in the same way.

5.1 Preparation

Notes:

“

Using the menu

LEVEL CONTROL” the Cassette generates an equally powerful

HF carrier on the video carrier frequency of the channel. In this way, the Cas­sette‘s level can also be set with an analogue TV test receiver set to the video
carrier frequency of the channel. In order to prevent interference within the
head end and the cable system, the output level of the digital Cassettes must
be lowered by approx. 10 dB at 64 QAM and by approx. 4 dB at 256 QAM
compared to analogue Cassettes.

• Connect the test receiver to the “TEST OUTPUT” 1 of the
head end.

• Set the output channel of the Cassette (see page 14) and

adjust the TV test receiver to this channel.

• Switch on the modulator if necessary.

• Measure the output level of the analogue Cassettes and, if

necessary, tune them to a uniform output level.

•

Check the output level of the digital DVB-MTP Cassettes.
Lower the output level of the appropriate Cassette in re­lation to the analogue Cassettes at 64 QAM by approx.
10 dB and at 256 QAM by approx. 4 dB with the level
adjuster to the right of the Cassette.

•

After programming the Cassette check the output level of
the Cassette again and if necessary set it again.

.

L100

L100

L101

L101

L103

L103

C100

C100

LNC-

LNC-

+18V

+18V

ROT

GRUEN

ROT

GRUEN

+18V

+18V

Anschl.

Anschl.

1

1

CASSETTE

CASSETTE

CASSETTE

CASSETTE

CASSETTE

CASSETTE

- 10 -

- 11 -

5.2 The menus at a glance

Ein/On

Kanalzug

Channel strip

A / B

BE–Remote

PROFESSIONAL

t > 10 s

Box 1

S21-S41

Bx 1A

S21-S41

V.3 4

DVB-MTP

***

S21

DVB-MTP

***

S21

Mit * ) gekennzeichnete Funktionen sind
nur im Kanalzug ”A“ möglich

Functions marked by a star * ) are only
possible in the channel strip ”A“

Bx 1A

Böx 4

Box 2

+

C5-12,S3-24

C5-12,S3-24

S21-S41

Bx 1A

PHDQ 4002

TWIN-SAT

TWIN-SAT

TWIN-QAM

C07

***

S23

VERSION:

V3

C07




* )

Bx 1A

S21

OUTPUT:

(306.00)

t > 2 s * )

Bx 1A

TP-Modul:

Bx 1A

▶

▶

S21 0

VERSION:

MTP15

OUTPUT:

(306.00)

-64 … +64

!!

* )

Bx 1A

Modulator:

* )

Bx 1A

LEVEL HF OUT:

* )

Bx 1A

LEVEL CONTROL

* )

Bx 1A

RANDOM 6900

* )

Bx 1A

Spectrum

OUTPUT:

on

OUTPUT:

OUTPUT:

OUTPUT:

kBd

OUTPUT:

normal

on / off

0 … -7

0

normal / inverse

* )

Bx 1A

- 11 -

MODE:

Ueberwachung

Überwachung

Monitoring

/

KDG

- 12 -

S

D

P

S21

K

g

C

A / B





Bx 1A

f = 10600 MHz

LNB-Freq.:

◀

▶

/

◀

▶

/

+

/

Bx 1A

27500

Bx 1A

–

f=11836

* )

* )

Bx 1A

256-QAM

* )

Bx 1A

SR=6900 (6531)

INPUT:

DVB-S

INPUT:

-0.4

QAM-MODE:

STUFFING:

◀

+

+

◀

+

5.2.1 The menu of channel strip B

+

Kanalzug

analzu

hannel strip

Channel strip

A / B

Bx 1A

Bx1A

21-S41

S21-S41

DVB-MTP

***

VB-MT

S21

▶

/

–

/

Bx 1A

14.6 dB

M

–

/

▶

/

–

/

M

Kanalzug B

Channel strip B

Kanalzug A

Channel strip A

C/N

(+ 9.6)OK












0

6

LNB-Freq.:

MHz

INPUT:

DVB-S

INPUT:

-0.4

◀

▶

/

◀

▶

/

–

+

/

Bx 1B

14.6 dB

M

- 12 -

C/N

(+ 9.6)OK





Bx 1B

f = 10600

Bx 1B

2750

Bx 1B

◀

▶

/

–

f=1183

+

/

- 13 -

5.3 Cassette programming





Bx 1A

C5-12,S3-24

TWIN-SAT

C07

Böx 4

C5-12,S3-24

TWIN-SAT

C07

Box 2

S21-S41

***

TWIN-QAM

S23

Mit * ) gekennzeichnete Funktionen sind
nur im Kanalzug ”A“ möglich

Functions marked by a star * ) are only
possible in the channel strip ”A“

+

t > 10 s

Ein/On

BE–Remote

PROFESSIONAL

V.34

Box 1

S21-S41

DVB-MTP

***

S21

Bx 1A

TP-Modul:

VERSION:

MTP15

Bx 1A

S21-S41

DVB-MTP

***

S21





Kanalzug

Channel strip

A / B

Bx 1A

PHDQ 4002

VERSION:

V3

• Switch on the head end.
—> The display shows the software version of the head

end (e.g. V.34).

—>

The processor reads the Cassettes‘ data (approx. 10 s

Selecting the Cassette

• If necessary select the Cassette you want to program

(Box…) by repeatedly pressing the button

• By pressing , activate channel strip “A”.

Switching the channel strip

—> The display shows e.g. the menu “Bx 1A DVB-MTP”.

“Bx“ Cassette (box)
“1” Cassette 1
”A” Channel strip A
”S21-S41” Adjustable channel range
”

” Functions of the MTP module

***

”S21” Set channel

).

.

• Select the desired channel strip “A” or “B” with .

- 13 -

- 14 -

To query software versions:

/

- Software version and type of the Cassette:
Press the

button once.

- Software version of the TP module:
Press the button twice.

- Return to main menu:
Press the

button again.

• Press the button.
—> The “OUTPUT” menu is activated.

Setting the output channel (only Bx…A)

* )

Bx 1A

S21

OUTPUT:

(306.00)

t > 2 s * )

▶

▶

Bx 1A

S21 0

OUTPUT:

(306.00)

-64 … +64

!!

• By pressing , set the desired output channel.
—> The channel range that can be set depends on the

type of Cassette used.

Frequency offset (fine tuning)

• Press and hold down the

▶

button until “0” also appears

in the display.

• Use the keys to set the offset (-64 … +64).

• If necessary, use the

◀

key to return to the channel

setting.

Note:
Using the Cassette PHDQ 2002 BC and PHDQ 3002 BC

the menu “Frequency setting” appears instead of “Channel
setting”.

- 14 -

- 15 -

▶

/

–

/

Bx 1A

112.0000 MHz

◀

+

OUTPUT:

Bx 1A

Modulator:

OUTPUT:

on

The QAM signal is transmitted with a bandwidth of 8 MHz.

This means that you can only use the channel centre fre­quency of the existing channel raster in the range of chan­nels S21 … C69 (frequency raster 8 MHz). The frequency
raster is 7 MHz in the range of the lower channel ranges
(≤ channel S20)

. If one uses the existing channel raster here,
this will result in interference (overlapping) of the 8 MHz
QAM signal packages and thus transmission problems.
For programming in this channel range, we recommend to
calculate the output frequency of the QAM modulator,

… starting with the upper output frequency of the Cas-

sette listed in the “Specifications” going back in steps
of 8 MHz, or

… starting with the lower output frequency of the Cas-

sette listed in the “Specifications” mov

ing up in steps

of 8 MHz.

Channel

S 21 306.00
S 22 314.00
S 23 322.00
S 24 330.00
S 25 338.00
S 26 346.00
S 27 354.00
S 28 362.00
S 29 370.00
S 30 378.00
S 31 386.00
S 32 394.00
S 33 402.00
S 34 410.00

frequency

Channel centre

]

[MHz

S 35 418.00
S 36 426.00
S 37 434.00
S 38 442.00
S 39 450.00
S 40 458.00
S 41 466.00
C 21 474.00
C 22 482.00
C 23 490.00
C 24 498.00
C 25 506.00
C 26 514.00
C 27 522.00

Channel

]

[MHz

frequency

Channel centre

C 28 530.00
C 29 538.00
C 30 546.00
C 31 554.00
C 32 562.00
C 33 570.00
C 34 578.00
C 35 586.00
C 36 594.00
C 37 602.00
C 38 610.00
C 39 618.00
C 40 626.00
C 41 634.00

- 15 -

Channel

]

[MHz

frequency

Channel centre

C 42 642.00
C 43 650.00
C 44 658.00
C 45 666.00
C 46 674.00
C 47 682.00
C 48 690.00
C 49 698.00
C 50 706.00
C 51 714.00
C 52 722.00
C 53 730.00
C 54 738.00
C 55 746.00

Channel

]

[MHz

frequency

Channel centre

C 56 754.00
C 57 762.00
C 58 770.00
C 59 778.00
C 60 786.00
C 61 794.00
C 62 802.00
C 63 810.00
C 64 818.00
C 65 826.00
C 66 834.00
C 67 842.00
C 68 850.00
C 69 858.00

Channel

]

[MHz

frequency

Channel centre

- 16 -

Press the button.
—> The menu “Setting the LNB oscillator frequency”
– “LNB-Freq.:” is activated (page 18).
or

• Press the

button.
—> The sub menu “Modulator settings”
– “

OUTPUT:

Modulator” is activated.

Modulator settings (only Bx…A)

• By pressing the

* )

Bx 1A

Modulator:

buttons, switch the modulator

OUTPUT:

on

(HF output) “on” (default setting).

• Press the button.
—>

The display shows “OUTPUT:

LEVEL HF OUT:

Setting output level of the channel strips (only Bx…A)

* )

Bx 1A

LEVEL HF OUT:

OUTPUT:

0

on / off

”.

0 … -7

• Press the

* )

Bx 1A

LEVEL CONTROL

button.

OUTPUT:

—> “OUTPUT: LEVEL CONTROL” appears in the display.

Note:
In this mode a digital carrier is set to the analogue pic-

ture carrier frequency of the output channel of the channel

- 16 -

- 17 -

strip. Thus you can measure the absolute output level using
a analogue test receiver.

•

Measure the output level of the channel strip using the con­nected antenna test receiver.

•

By pressing the

“OUTPUT: LEVEL HF OUT:”
crementally from “0

AUDIO

” to “

button activate the menu

and

adjust the output level in-

–7” dB

by pressi

ng .

• Press the button twice.
—> “OUTPUT: RANDOM” is shown in the display.

Producing a QAM signal for testing (only Bx…A)

* )

Bx 1A

RANDOM 6900

The Cassette generates a QAM signal for testing,

OUTPUT:

kBd

there having to be an input signal.

In the second menu line, the corresponding output symbol

rate e.g. “6900 kBd”

(=

6,900

kilosymbols per second) is shown.

• Press the button.
—> The display shows the “OUTPUT: Spectrum” menu.

Inverting the user signal (only Bx…A)

For exceptions and “older” digital cable receivers, the spec-

tral position of the user signal can be inverted.

* )

Bx 1A

Spectrum

OUTPUT:

normal

normal / inverse

without

- 17 -

- 18 -

• By pressing set the spectral position “normal” or

Überwachung

/

Monitoring

Bx 1A

MODE:

Ueberwachung

* )

“inverse”.

• Press the button.
—> The menu “QAM monitoring” –
“MODE: Ueberwachung” is activated.

QAM monitoring (only Bx…A)

In this menu the signal at the Cassettes´ output is defined if

there is no input signal available:

– “Ueberwachung” (Monitoring): Single carrier,
– “KDG”: QAM modulated data flow.
Thus an automatic monitoring of the QAM modulated out-

put signal is possible.

• Use

to select “Ueberwachung” or “KDG”.

• Press the button:
—> The menu “Setting the LNB oscillator frequency” –
“LNB-Freq.:” is activated.

Setting the LNB oscillator frequency

Bx 1A

f = 10600 MHz

LNB-Freq.:

◀

▶

/

◀

• Use the

▶

buttons to place the cursor under the number

/

to be changed and use to set the LNB oscillator
frequency.

• Press the button:
—> The menu “Setting the input symbol rate and the
DVB mode” – “INPUT SR=27500” is activated.

- 18 -

- 19 -

Setting the input symbol rate and the DVB mode

Setting the symbol rate

The symbol rate “SR” of the satellite transponder can be

found in the current transponder tables of the various satel­lite trade magazines or in the websites of the according
program providers.

Bx 1A

27500

INPUT:

DVB-S

• Use the

◀

▶

/

–

+

/

◀

▶

buttons to place the cursor under the

/

number “SR=27500” to be changed and set the symbol
rate with the buttons .

Setting the DVB mode

The Cassettes recognize the transmitted DVB mode and

switch over between the normal QPSK mode (DVB-S) and
the DVB-S2 mode. Receiving stations with DVB-S2 mode,
we suggest to preset the DVB mode to shorten the time for
searching stations.

•

Use the ▶ button to place the cursor under “DVB-S” /
“DVB-S2“ and set the DVB mode with the buttons

(s. Technical data).

• Press the button.
—> The menu “Setting the input frequency” – “INPUT” is
activated.

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- 20 -

Setting the input frequency (transponder frequency)

Notes:

If three dots “ … ” appear in the second line of the display,

–

the Cassette is in the “station search” mode.

Please wait until the process has finished.
Once the HF receiver has synchronised to the input signal,

any offset to the target frequency is displayed in MHz, e.g.
“– 0.4”.

– If a question mark “?” appears in the second line of the

display, there is no input signal present. Check the configu­ration of the antenna system and head end as well as the
preceding settings of the Cassette in question.

◀

+

Bx 1A

▶

/

–

f=11836

/

* )

INPUT:

-0.4

•

Use the

◀

M

▶

/

Bx 1A

14.6 dB

Kanalzug B

Channel strip B

buttons to place the cursor under the

C/N

(+ 9.6)OK





number to be changed and set the input frequency with
the buttons .

•

Press

to adjust the input frequency so that the offset

is less than 1 MHz.

• Press the button.
—> The sub-menu “Testing the signal to noise ratio” –

“C/N” is activated

Testing the signal to noise ratio

In this menu you can estimate the quality of the input signal.

C/N

(+ 9.6) OK

Bx 1A

14.6 dB

  

1 Current signal to noise ratio
2 This value shows the difference between the quality

of the input signal and the threshold of the tuner at
this type of modulation.

- 20 -

- 21 -

* )

p

Bx 1A

256-QAM

Note:

At a value lower than “5” picture dropouts can occur.

3 If “OK” is shown, the signal to noise ratio is ok.

If a value < 5 is shown under 2 the display changes

from “OK” to “!!”.

button

• Press the

Note:

Setting the channel strip

button

M:

—>

Return to “Selecting the Cassette” A (page 13).

Going back to
(page 13) cancels

“Switching the channel strip”

all settings that have not been saved.

• Press the button.
—> The menu “Setting the QAM modulation value”
– “QAM-MODE” is activated.

Setting the QAM modulation value (only Bx…A)

QAM-MODE:

–

+

/

—> Return to the main menu.

“B”

store the setting by using the

B via

•

Setting the QAM mode with

—>

A higher QAM mode restricts the output symbol

.

rate (permissible value < 7,000 kilosymbols per
second).

An output QAM mode of > 64 QAM places a large

burden on the cable network. Due to noise, delay
and frequency response problems, a reception of
the converted output signal can be impeded.

• Press the button.
—> The menu “Setting the stuffing” – “STUFFING”
is activated.

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- 22 -

* )

Bx 1A

SR=6900 (6531)

Setting the stuffing (only Bx…A)

STUFFING:

◀

▶

/

–

+

/

M

Channel strip A

SR=6900 (= “number 1”):

Active output symbol rate

Kanalzug A





Bx 1A

SR=6900 (6531)

Zahl 1 Zahl 2

Number 1 Number 2

STUFFING:

(6531) (= “number 2”):

The current measured output symbol rate.
If the station filter is activated, this value is lower than

the value of the “number 1”. The value fluctuates,
since the data rates of individual stations are dynami­cally modified by the broadcasters.

◀

•

Use the

▶

buttons to place the cursor under the

/

number to be changed (“number 1”) and set the symbol
rate with the buttons .

The value set corresponds to the new output symbol rate.

Note:

• Increase the value of “number 1”

—> With the station filter “on”/ ”off”, the “number 1” can

be increased to any value up to 7,000.

• Reduce the value of “number 1”.

—> With the station filter “on”, the “number 1” can be

decreased. To do this, observe the “number 2” for
approx. 30 seconds and note the highest value.
Add roughly 10 % to this value. Do not decrease the
“number 1” lower than the value of “number 2”.

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- 23 -

Is the “number 1” lower than “number 2” exclama-

tion marks “!!” appear in the display.

Bx 1A

SR=6250 (6531) !!

STUFFING:

Saving settings

• Press the M button.

—>

Return to “Selecting the Cassette” A (page 13).

—>

The “new” settings are saved permanently.

—> If functions of the MTP module are activated, their

status is shown in the second line of the display:

Box 1

S21-S41 * * *

DVB-MTP:

S21

1.

2. 3.

1. Position: “P” – station filter on

2. Position: “i” – PSI off
“M” – PSI on
“*” – PSI and drop/pass filter off

3. Position: “N” – NIT changed

Functions that are not active are indicated by a

star “ * ”.

Notes:

–

Going back to

“Switching the channel strip”

(page 13) cancels

all settings that have not

B via

been saved.

– If necessary set channel strip “B”.

- 23 -

Alterations reserved. Technical data E. & O.E. © by GSS GmbH 26032006