Promax RANGER Neo 2, User Manual

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October 2021 97 Chapter 5: TOOLS
Long Term Evolution is a new standard for mobile networks. This mobile
communication standard uses a frequency band close to the bands used by
television. For this reason it can cause interferences.
The equipment allows you to use an LTE external filter to put on the RF input
connector. This filter can be enabled to check if the quality of the TV signal
reception improves, when much of the LTE band has been attenuated by the
filter. With this tool you can measure the MER of a DTT channel, presumably
affected by an LTE signal, and evaluate the effects of enabling an LTE filter.
To be clarified that these filters cannot completely remove the LTE band signals.
Especially for the TV channels close to 790 MHz, where is the end for the current
UHF. If we are close to a LTE station with low downlink channels, a filter cannot
be a sufficient solution.
Other options to better mitigate the LTE signals can be considered, such as a
change in the location of the TV antenna or a passive shield in the way between
the two antennas (TV and LTE).
For more information, refer to application note “LTE Digital Dividend” available
on the PROMAX website .
The LTE Ingress Test is available to all digital terrestrial signals.
►
Settings
1 Press the "Installation manager" key for one second to access "Preferences"
settings.
2 Go to "Tools" tab and edit the LTE filter settings:
„
LTE Filter F. Min.: Select the minimum frequency for the external LTE
filter.
„
LTE Filter F. Max.: Select the maximum frequency for the external LTE
filter.
5.3 LTE Ingress Test
5.3.1 Description
LTE ingress test
S
C
A
N
5.3.2 Operation