614 Chapter 17
W-CDMA Downlink Digital Modulation for Receiver Test
Setting Up for a Compressed Mode Signal
Figure 17-26 12.2 kbps RMC Selected
If desired, you can change the TFCI bits, control the TPC pattern, and select the secondary scrambling
code.
4. Press the
Mode Setup hardkey to return to the first-level W-CDMA softkey menu.
Generating the Baseband Signal
Press the W-CDMA Off On softkey to On.
This step can be performed at anytime during the setup. The advantage of turning the format on before
setting up the signal, if you have a spectrum analyzer or some other measuring equipment connected, is you
can see the changes as they are made. However you may experience a slight delay in signal processing while
the ESG updates the W-CDMA signal with any changes that are made.
Configuring Compressed Mode
Selecting the Rear Panel Output Trigger Signal
Performing this task is not required if you are performing BERT measurements. A rear panel output signal is
used to trigger an instrument, so it begins measuring the RF output signal at a certain point.
1. Press
More (1 of 2) > Rear Panel Output Setup > More (1 of 5) > More (2 of 5) >
DPCH Compressed Frame Indicator (DRPS32).
This enables an output trigger signal at the rear panel EVENT 1 connector when the compressed frame is
transmitted.
2. Press the
Mode Setup hardkey to return to the first-level W-CDMA softkey menu.
12.2 kbps RMC Selection Showing
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