Promax TV EXPLORER HD+ Manual De Instrucciones página 196

The horizontal lines define the signal level, the broken lines being separated a
distance equals to 10 dB. The level of the top line (70 dBμV in previous figure), named
Reference Level, can be altered using the vertical cursors
60 dBμV to 130 dBμV by steps (from 70 dBμV to 130 dBμV in satellite band). The vertical
measurement range changes to 5 dB/div by holding pressed the lower arrow cursor key
[6] and changes to 10 dB/div by holding pressed the upper arrow cursor key
The signal level for each frequency is displayed vertically, the lower frequencies
appear at the left of the screen and the higher ones at the right. The amplitude of the
lobes is calibrated. In the example in previous figure the noise level is at around 25 dBμV
and the lobe with the highest signal level (third from the right) is at 70 dBμV.
In the case that the equipment detects saturation on RF input due to an excess of
signal, it will appear the icon
SYNC: FAIL in the TV mode to indicate this situation. The user must increase the
Reference Level in order to activate an additional attenuator and to avoid the input
saturation.
Speed of sweep can be modified for terrestrial TV signals. To that end, press
shortly the key [17] MEASUREMENT CONFIGURATION. On the menu "Configuration"
it will appear the option "Sweep". Entering in this option you can switch between "Fast"
for a quick sweep of the spectrum or "Accurate" for a slower sweep. This option will only
appear when you're working with terrestrial TV signals, therefore the led "T" on the front
panel must be lighted.
Page 72
Figure 51.- Spectrum analyser mode.
in the Spectrum Analyser mode and the message
USER'S MANUAL. TV EXPLORER HD+
[6] key over a range from
[6].
11/2013