Promax TV Explorer HD Manual De Usuario página 164

In order to change the measurement mode press
screen like the following one:
Figure 22.- Analogue signal level measurement in terrestrial band.
Turn the rotary selector
[12] key to select the type of measurement to highlight on the monitor.
The available types of measurements are:
LEVEL:
C/N:
V/A:
FM Deviation:
When at the RF input appear an important number of carriers with a high level the tuning
circuit may become out of control, giving as a result wrong level measurements. To be
able to determinate the equivalent level of a carrier group (with similar levels) at the RF
input, it is possible to use the expression:
L t =L + 10 log N
L t : equivalent total level
L: average level of the carriers group
N: number of carriers
Page 48
[1] to change the tuning channel/frequency. Press the
Level indication on the upper part of the screen (analogue
bar).
Carrier/Noise ratio measurement.
Video/Audio ratio measurement.
Measure the frequency peak deviation for any modulated
analogue carrier in FM.
USER'S MANUAL. TV EXPLORER HD / HD
[12] key, it will appear a
LE
WARNING
05/2011