Attenuator Menu
Calculator: internal DSP calculator mode.
Input: select input stage to enable LNA or Attenuator -
only in PLUS models
Top dBm: Visual max amplitude on screen.
Bottom dBm: Visual min amplitude on screen.
Iterations: Internal DSP calculator iterations.
Offset dB: external dB attenuation or gain value to compensate for external devices, such as
attenuators or amplifiers.
Units: dBm or dBuV.
Note you may need to navigate all the way to the bottom for the menu to show
this last option on screen
.
The selected Top and Bottom dBm are visual limits, not real internal limits.
The internal DSP optionally performs advanced calculations in order to configure the analyzer for the required
measurement:
Calculator offers multiple modes to display data, to change mode click on [Enter] key:
o
Max: Peak values are used from the last sweep Iterations (see menu option at the bottom).
This is the standard mode you will want to use to detect rapidly changing DSS signals or find
for worst case channel occupancy.
o
Max Hold: Capture all activity in the band including the Max signal envelope mode with
vector graphics and real-time activity with vertical bars. Use this mode anytime you want to
detect activity for a long period of time. It is a very powerful mode to detect activity in busy
bands such as 2.4 GHz. As this is a cumulative mode, while on Spectrum Analyzer screen you
can clear the spectrum anytime with the RETURN button.
o
Average: Arithmetic media average is calculated over the last sweep Iterations. This is the
best possible choice to remove unwanted white noise from screen, particularly useful in
constant wave (CW) and channel signals display.
o
Normal: No calculation is done, just raw data as result of the realtime sweep.
o
Overwrite: Useful to track unlimited activity in the band. Darker areas will point to high
activity signal. You can clear the spectrum anytime with the RETURN button.
Iterations: The number of sweep data iterations to perform calculations on. It goes from 1 to 16. As
an example, a value of 5 with Calculator: Average means the DSP will use 5 complete accumulated
sweeps to average data.
Note: Selecting a higher or lower Top dBm value
is a very frequent workflow, as you typically want to zoom
in
or out based on signal power being measured.
The handheld
Spectrum Analyzer main screen offers two
keyboard shortcuts: [Up] and [Down] arrow keys can be used to increase
or decrease Top dBm respectively
www.latnex.com/spa
www.emrss.com/latnex-analyzers
Toll-free number 1(855)267-2582
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