Polytron PCU 4111, Руководство пользователя

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8.3.6. NIT-processing ( N etwork I nformation T able)

NIT stands for a transponder table which includes information for direct reception of digital programmes.

NIT-processing requires advanced skills of DVB-standards!

The combined NIT includes all relevant data of all connected devices and contains information about all
receivable programmes in the network.

Important: Place output channels within a combined NIT onto the lower frequency range, if possible. Many
receivers start scanning at the lower end of the band ensuring that the combined NIT is found at
first. This is particularly the case if existing systems with devices from other manufacturers will
be upgraded and the combined NIT is missing.

Important: The skilled employee should create a precise system and programming plan before
installation/programming.

Important: If service-remapping should be applied, this adjustment has to be done before
creating the combined NIT.
Process scheme:
Changes to the NIT table(s) first become effective after closing the PC software.
Please wait approx. 1 min. after closing the PC software until the changes become
effective in all relevant systems.
2. create a combined
NIT using the
individual device
parameters
3. upload the
combined NIT upon
all devices,
separately
4. in case of later changes:
- set all devices separately
- create a new combined NIT
- upload the combined NIT
upon all devices, separately
1. set all devices
separately, store the
parameters and
document them
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