User's Manual Part 2

Tech-X Flex User Guide - Firmware v06.50 Tech-X Flex
®
(NG2)
8-14
Intro
Overview
Wi-Fi
Ethernet
System
IP/Video
MoCA
RF
Specs
• These graphs include a configurable Reference Level, shown as Ref Lvl (dBmV) in the previous
example. This value sets largest value for the y-axis and allows you to shift the range up and down to
get a better view of the measurement data. In some results screens, the reference level includes the
choice of Auto, with which the unit attempts to center the data automatically.
• Some graphs also include a configurable Division setting, indicated by the 10 dB/div label in the
previous example. This setting indicates the number of respective units in each shaded division on
the graph. In the previous example, the graph contains 6 divisions of 10 dB each, allowing the graph
to span 60 dB. A different Division setting would increase or reduce that span.
The other type of bar graph provides a simple graphical representation of power levels. Above a bar, the
measured power (in dBmV) for the respective signal is displayed. On each bar, a “bracket” provides a
rough estimation of the threshold range configured for the respective power level (see Thresholds on
page 8-23).
Figure 8-10 Bar graph notations
Note that in all cases, the unit is designed to accurately measure power down to -30 dBmV. In some
cases, if a signal below this level is detected and can be measured, the unit will display a value below -
30. If this occurs, it should be noted that the measurement may not be accurate. Furthermore, for very
low measurements, it is possible that the unit is measuring noise on the line, rather than a broadcast
video signal.
Preliminary issue - Limited distribution only!