When measuring channels in the satellite band or digital channels, to measure the
C/N ratio correctly, the bandwidth of the channel must be defined previously, using the
Channel BW option on the Measurements Configuration menu that appears when
pressing the
[17] key.
In order to measure digital channel C/N ratio it is indispensable to tune channel at
its central frequency.
In the case of the presence of adjacent digital channels, these could mask the noise
level measurement.
5.14.6 Digital TV: Measuring the Power of Digital Channels
The TV EXPLORER
measurement filter bandwidth and estimates total channel power assuming that spectral
density is uniform throughout channel bandwidth.
On selecting the CHANNEL POWER measurement mode, the screen displays the
following information:
Page 54
Figure 29.- NOISE cursor. C/N (MANUAL).
HD
ATSC measures digital channel power in the
USER'S MANUAL. TV EXPLORER
IMPORTANT REMARK
HD
ATSC
12/2010