2
To turn on the Spectrum Compact, slide the power switch at the top of the
device towards the red dot (•). Operation time with a fully charged battery is
up to 3 hours for the 24-40 GHz model, and up to 4 hours for all other models.
The screen is divided into two sections – the graph and the control buttons.
The graph is mapped on a grid with 10 horizontal divisions and 4 ½ vertical
divisions. The horizontal axis represents a linear frequency scale that increases
from left to right. The vertical axis represents a logarithmic power scale that
increases from bottom to top. The spectrum curve is displayed in this graph.
The touchscreen has the following conguration buttons:
SWEEP CONT – start or stop the sweeping of spectrum (the button is green
when spectrum is being swept continuously and grey if the sweeping is
stopped)
SAVE – save the current spectrum curve for later review
FREQUENCY – select the centre, start, and stop frequencies
SPAN – change the displayed frequency range (difference between the start
and stop frequencies)
MARKER – set a marker at a selected frequency
HIGH CONTRAST – change the colour scheme of the interface to improve
visibility in direct sunlight
TRACE MODE – change the trace mode
NORMAL – default trace mode showing currently detected power levels
MAXHOLD – displays a blue trace in addition to the NORMAL trace showing
the highest detected power levels
CUMULATIVE – displays all the detected frequency points since the sweeping
started
