Chapter 16 525
W-CDMA Uplink Digital Modulation for Receiver Test
Setting Up Compressed Mode for a Single TGPS Transmission
Figure 16-52 Compressed Mode Setup
Viewing and Adjusting the Compressed Mode Signal
This procedure will show the ESG compressed signal output on the PSA display (Figure 16-53 on page 527)
using the parameters set in the previous procedures. In addition, you will learn how to set the compressed
mode transmission for a finite number of repetitions.
Configuring the E4440A PSA
1. Select the W-CDMA mode.
Press
Mode > W-CDMA.
2. Select the mobile setup.
Press
Mode Setup > Radio > Device BTS MS to MS.
3. Set the center frequency to the ESG carrier frequency. This procedure uses 1.95 GHz.
Press
Frequency > 1.95 > GHz.
4. Select the time domain measurement.
Press
Measure > More 1 of 2 > Waveform (Time Domain).
5. Set a Sweep time that lets you view the signal parameters.
Press
Meas Setup > Sweep Time > 100 > ms.
6. Set the resolution bandwidth for a faster response time that captures the signal components.
Press
Res BW > 1 > MHz.
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