3-14 Measurements Menu EVDO Signal Analyzer
3-26 PN: 10580-00235 Rev. D 3GPP2 MG
RF Measurement Menus
Key Sequence: Measurements > RF Measurements
Channel Spectrum: Pressing this submenu key displays the channel
spectrum of the input signal (2.5 MHz span). The screen also displays
numeric values of Channel Power in dBm and watts, Peak to Average power
in dB, and Occupied Bandwidth (Occ BW). The Ch Spectrum submenu
allows OBW Span to toggle between 2.5 MHz and 1.35 MHz.
Power vs. Time: Pressing this submenu key displays a power versus time
measurement. This view shows the time domain view of an EVDO half-slot.
The Slot Type selection in the Setup menu determines the priority of which
slot is displayed. Below the measurement display, numerical values are
included for:
Pilot and Mac Power in dBm
Freq Error in Hz and PPM
Channel Power in dBm
ON/OFF Ratio: Power ratio (in dB) of Pilot and MAC power to the data
power in an idle slot
Idle Activity: Percentage of idle slots relative to total slots in the
captured signal
ACPR: Pressing this submenu key displays the Adjacent Channel Power
Ratio (ACPR). The instrument displays one or more main channels and two
adjacent channels on each side of the main channel. A data window below
the channel measurement display indicates the power in each channel.
When this submenu key is active (an arrow on the key symbol indicates that
a sub menu is available), another key press opens the “ACPR Menu” on
page 3-27.
Spurious Emission: Pressing this submenu key displays the received
signal and the mask, based upon received signal strength.
RF Summary: Displays a summary table of all the RF numerical
measurement results.
Back: Returns to the “Measurements Menu” on page 3-25.
Figure 3-21. EVDO RF Measurement Menu
Power vs. Time
ACPR
RF
Summary
Spurious
Emission
Channel
Spectrum
Back
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