MASTER STC
USER MANUAL
42
QAM CATV SIGNAL ANALYZER
13 TUNING QAM CATV SIGNALS
The patented ROVER Autodiscovery feature is capable to automatically detect both the
modulation type and the standard of the received signal. Thus no need for the user to operate
any specific setup in order to perform measurements on CATV signals, both analogue and
digital (QAM) ones.
To perform measurements on QAM signals just procede as described in Chapter 0 “
THE SELECTED CHANNEL CARRIES ON A QAM (CATV) SIGNAL
” at page 33.
14 CABLE SYSTEM MEASUREMENTS
14.1 INGRESS MODE (MEASUREMENTS ON THE FREQUENCY
RANGE 4 ÷ 66 MHz)
Press and release the INGRESS [2] key to enter the Ingress Mode.
The LCD will display the real time spectrum monitoring in the frequency band 4 ÷ 66 MHz.
A dotted vertical line (marker) displays the frequency value whose signal level is currently
displayed in the LCD bottom row (MRK) together with the relevant measurement unit. In the
top right edge the LCD displays frequency value corresponding to the current marker position
(F
, highlighted in the above screenshot, in MHz) An horizontal dotted line shows the real time
signal level value at the current marker position (current frequency value).
MOVING THE MARKER (FREQUENCY VALUE)
Using the standard navigation mode, highlight the current frequency value and modify the
marker position (current frequency value). The meter displays will at any time display the
current frequency value (first row, top right) and the relevant signal level measurement
(bottom row, MRK
). Please note: while in INGRESS Mode you cannot set up a
specific frequency using the Direct Frequency input
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