Measurements Configuration; Itu-T J.83/B (Qam Annex-B) Digital Channel Configuration - Promax US TV EXPLORER II Manual De Uso

When the instrument completes the exploration, a new channel plan is generated
based on the active channel plan. This new channel plan contains only the channels
that have been identified and the rest are removed. The equipment offers the possibility
of saving in memory the channel plan generated to use later. If the new channel plan is
not saved it will remain active until the instrument is powered off or some other plan is
loaded.
5.13

Measurements configuration

With the aim of taking the measurements of all types of signals some times could
be necessary that user enters parameters relative to particular characteristics of these
signals, whether an automatic detection has not been possible, or these parameters
differ from the standard corresponding ones.
Press the Measurements Configuration
CONFIGURATION menu and turn the rotary selector
which are modifiable by the user.

5.13.1 ITU-T J.83/B (QAM Annex-B) Digital Channel Configuration

Press the Measurements Configuration
CONFIGURATION menu and turn the rotary selector
Annex-B signals parameters, which can be defined by user and are described below:
1) Spectral inversion
If necessary, activates the Spectral inversion (On). If the spectral inversion is
not correctly selected, reception will not be correct.
2) Modulations
It defines the modulation type. When selecting this function and pressing the
rotary selector
permits to choose one of the following modulations: 64 or 256.
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[1] a multiple-choice menu will appear on the screen, this menu
USER'S MANUAL. US TV EXPLORER
[17] key to access to the
[1] to access the parameters,
[17] key to access the
[1] to access the QAM
II
11/2013