Promax PRODIG-3 Manual Del Usaurio página 116

In order to change the measurement mode press
screen like the following one:
Figure 19.- Analogue signal level measurement in terrestrial band.
Turn the rotary selector [1] to change the tuning channel/frequency. Press the
[12] key to select the type of measurement to visualise on the monitor.
The available types of measurements are:
LEVEL:
C/N:
V/A:
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 40
10 30 50 70
FREQ: 168.25 MHz
S10
CH:
Level indication on the upper part of the screen (analogue
bar).
Carrier/Noise ratio measurement.
Video/Audio ratio measurement.
USER'S MANUAL. PRODIG-3
[12] key, it will appear a
90 110 130
» LEVEL: 79.2 dBµV
C/N: 40.1 dB
V/A: 16.2 dB
WARNING
03/2008