User`s guide

36 E6651A User’s Guide
3 Base Station Emulator Mode
4
Apply a Frequency Offset: The E6651A can measure the
frequency offset of an uplink signal, and to analyze signal
performance after a frequency offset has been applied.
To apply the frequency offset in the Frequency Menu (see
also “Frequency Menu" on page 61), set to
using the Selection Menu. To analyze a signal without
frequency offset, ensure that is set to .
5 Select the Symbol Position: The E6651A can measure the
signal quality for each symbol within a frame. Press
button in the Selection Menu and use the Knob or
Numeric Keys to select the desired symbol position.
6 Perform Spectrum Measurement: During the Uplink Test,
the E6651A can provide spectrum measurement for the
uplink signal. To activate spectrum measurement, press
Measure on the Front Panel, followed by in the
Selection Menu. The Measurement Window shown in
Figure 14 is displayed. Refer to Chapter 4, “Signal
Analyzer Mode” for more information about analysis
operations. Note that spectrum analysis must be
performed after modulation analysis.
Figure 14 Uplink Spectrum Measurement
FREQ. Offset
ON
FREQ. Offset OFF
Symbol
Spectrum