Anritsu 3GPP, Руководство по измерениям

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GSM/GPRS/EDGE Signal Analyzer 2-5 Demodulator
3GPP MG PN: 10580-00234 Rev. Y 2-5
2-5 Demodulator
This measurement demodulates the GSM/GPRS/EDGE signal and displays the vector with
Phase Error, EVM, Origin Offset, C/I, Modulation Type and Magnitude Error (as applicable).
See
Figure 2-5 and Figure 2-6 . To demodulate the GSM/EDGE signal:
1. Set the frequency as described in the User Guide.
2. Press the
Setup
main menu key.
3. Press the
GSM/EDGE
submenu key and highlight
Auto
to automatically select the GSM
or EDGE signal.
4. The instrument has automatic external reference frequency detection or, if equipped,
activate GPS to get GPS High Accuracy frequency error measurements. Refer to the
User Guide for GPS setup information.
5. Press the
Measurements
main menu key.
6. Press the
Demodulator
submenu key.
Note
Highlight GSM or EDGE to set the instrument to measure only a GSM or EDGE
signal.
Figure 2-5. GSM Demodulator Measurement
Note
Using multi-channel spectrum, channel cursor, select the channel and press the
Demodulator submenu key and the unit will demodulate the selected channel.