User manual
Art. 55-106 M101
Rev. 0 03.2019
pag.
26
Offel s.r.l.
Via Lato di Mezzo, 32 48022 Lugo RA - Italy Tel. +39 0545/22542 [email protected]
www.offel.it
An ERROR indication will appear in the small box at the bottom right when the signal values are insufficient and an
OK indication when the signal values are correct.
Note: it is possible to quickly switch to the other menus related to the measured signal by selecting the items SHIFT,
CONSTELLATION or SEARCH at the bottom of the screen.
8.2 SPECTRUM ANALYSIS MENU
Press the MENU button and go to the TERRESTRIAL MENU screen. To start measuring, select SPECTRUM (fig.
141). The device will display all the ANALOG and DIGITAL signals within the span (frequency range) when it is set to
the SPECTRUM measurement mode.
Fig. 141
Fig. 142
Select the type of ANALOGUE or DIGITAL frequency, the WIDTH (SPAN), the REFERENCE (upper measurement
point) and the RANGE (the interval between the upper and lower measurement points).
Since there may be some amplifiers on the terrestrial TV antennas, it is possible in this case to select a supply voltage
of 5V, 12V, 20V at the output (fig. 142).
Fig. 143
Fig. 144
Fig. 145
Analog and digital signals can be displayed in different forms on the spectrum screen depending on bandwidth and
power levels (fig. 143-145).
By clicking on the MENU button:
When in the Spectrum screen click on the MENU button, the screen appears in fig. 146.
Fig. 146
AUTO RANGE: determines the highest and lowest values of the signal level
and establishes the interval of the screen indicator according to this.
FULL / EMPTY: shows the image of the empty or full spectrum.
MASK SAVE: records the image of the spectrum on the screen, to be able
to recall it later and compare it with the last measurement performed.
SAVE TO USB: makes it possible to record the image data of the spectrum
on the monitor on the USB memory card.
