User manual

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2.2 Data stream conﬁ guration

In the Basic Settings | Data stream area the basic settings for the processing of the transport stream of a channel unit

can be conﬁ gured. The channel ﬁ lter and PID ﬁ lter function can be switched on and off at the corresponding selection

boxes.

NIT

The NIT text box shows that the NIT (Network Information Table) has been taken over unchanged (NIT

Original).

CAT

There is the option to replace the CAT. The CAT (Conditional Access Table) is generally taken from

the satellite transport stream. In special cases, such as for provider KabelKiosk, it can be necessary to

replace the CAT Operator ID in the transport stream (mark the checkbox replace Operator ID in CAT).

The new value for the CAT Operator ID can be changed manually (ﬁ eld Operator ID) and is then

inserted into the transport stream in place of the original ID.

In the Loading text box the current and peak loads of the output are shown in %. The measured value

for peak loading can be reset with the button to the right.

If the loading reaches values of over 90 % the text colour changes to red. This indicates that any fur-

ther loading through additional channels would exceed the capacity of the output channels.

2.3 DVB-C-QAM output conﬁ guration

In the Basic Settings | Output area the QAM output of the head-unit can be conﬁ gured.

HF output

Using the HF Output selection box the HF output of the channel unit can be switched on and off.

Channel

The Channel selection box describes a normal cable standard channel grid of K21-K69 and S21-S41

in steps of 8 MHz.

Frequency

A ﬁ ne setting of the frequency can be done manually in the text box in steps of 0.25 MHz.

Symbol rate

The ﬁ ne setting of the symbol rates can be done manually in the corresponding text box in steps of 1

KS/s.

Level

Using the Level selection box the signal strength of the output signal can be set in 40 steps from maxi-

mum (0) to minimum (-40).

Constellation

The selection box Constellation speciﬁ es the QAM constellation (QAM16, QAM32, …, QAM256).

Mode

The selection box Mode allows the HF output to be modulated with various output signals, for exam-

ple, for measuring and analysis purposes:

1. In the normal operating mode the transmodulated satellite signal is output.

2. PRBS: Test mode. The QAM signal is modulated with the PRBS-23 sequence. Normal mode is

unavailable in this setting.

3. CW: Test mode. Sine-wave signal for levelling using simple signal meters. Normal mode is unavail-

able in this setting.