Promax Cable Ranger+ User Manual page 34

3 System measurement: It shows the demodulation system for the channel/
frequency selected. When pressing on it, it shows the data obtained after
signal demodulation for digital channels or additional measurements for
analogue signals.
4 Marker for selected channel / frequency. Bandwidth of the selected channel
is delimited by two continuous and vertical lines.
5 Span upper frequency.
6 Bandwidth resolution.
7 Arrows to increase / decrease span. Current span.
8 Span lower frequency.
9 Arrows to change reference level.
Options Menu
►
There are some options at the bottom of the screen:
: Screenshot.
CLEAR: It clears spectrum trace (this options is available if trace was hold
previously).
DBG SCAN: It opens the DBG SCAN function (see next section).
SCAN CM: It opens the CABLE MODEM SCAN function (see next section).
RANGING (only for CABLE): It enables the RANGING function (see next
section).
Settings Menu
►
Click on the
menu. The DOCSIS DOWNSTREAM SPECTRUM ANALYZER function has
these options:
Edit channel plan: It allows you to edit a channel plan and DBG (refer to
"Edit Channel Plan" chapter).
Units: It allows you to select measurement unit for power (dBuV, dBmV,
dBm).
Reference Line: It allows you to select the reference line by numbers
(-60 dBmV to +70 dBmv). Reference line allows you to define criteria in
order to quickly accept or refuse channels levels.
Trace: It allows you to select holding type of trace (maximal, minimum).
CTB/CSO: It allows you to set parameters to measure intermodulation
distortion CTB/CSO (Composite Triple Beat / Composite Second Order)
that has a big influence on the net quality.
Chapter 3: MEASUREMENT
MENU icon at the upper right corner to access the Settings
29 March 2020