SOFTWARE
93
TABLE OF DETECTED SIGNALS
The table of detected signals (Fig. 71, item 1) displays:
1.
number of detected signal,
2.
the frequency of the detected signal,
3.
detected signal level,
4.
number of pairs of wires in which a signal is detected at this frequency. When testing
power mains, this parameter is "1", since only one pair is tested.
To tune to the frequency of the detected signal, click on the corresponding row of the table.
The oscillogram of the demodulated signal (Fig. 71, item 10) will be displayed on the screen.
By changing the scanning step and controlling the marker, you can adjust the frequency of the
signal under analysis. To turn off the mode, click
(Fig.71, item 9).
If AUTOMATED mode is later turned on (provided that the signals were previously detected),
the screen will display a request:
When confirming ("Yes"), the information in the table about previously detected signals will
updated. In other case ("No"), a table with previously received data will displayed on the screen.
8.3.8. FEATURES OF TESTING LOW-VOLTAGE LINES
Low-voltage cables, as a rule, are multi-wire cables. All combinations of wires must be tested.
Algorithm for testing a low-current line:
1.
Select the type of cable to be tested
low-current" cable. After that, the
Switch control features will become available.
2.
Configure the Switch
3.
4.
Set the gain
5.
Click
The Analyzer will test all pairs of connected wires one by one. The Switch
table displays information about the number of detected signals in each pair (total number
of signals and the number of "unique" signals).
6.
Set the cursor on the first connected pair. Analyze signals with a SPECTRUM ANALYZER
and OSCILLOSCOPE.
7.
If necessary, turn on AUTOMATED mode
and analyze the table of detected
signals.
In accordance with this algorithm, it is necessary to examine all connected pairs.
Attention!
When testing low-voltage cables in the AUTOMATED mode table, it is possible to
mark signals in red or green.
Usually, hazardous and suspicious signals are marked in red, and non-hazardous signals in
green. Signals at the same frequencies detected in other pairs are automatically marked with the
same color.
