Chapter 16 533
W-CDMA Uplink Digital Modulation for Receiver Test
Setting Up Compressed Mode for a Multiple TGPS Transmission
Figure 16-57 DPCH is Selected
3. Press
Ref Measure Setup > 64 kbps.
This configures the DPCH with a 64 kbps reference measurement channel according to the 3GPP
specifications. This reference measurement channel sets up two transport channels (DCH) and the
required DPCH parameters.
Selecting the Rear Panel Output Trigger
This procedure builds upon the previous procedure “Setting UP the W-CDMA Signal Parameters” on
page 532.
1. Press
DPCH Rear Panel Setup > DPCH Output Signal Setup > More (1 of 2) >
Compressed Frame (RPS8).
This enables an output trigger signal at the rear panel EVENT 1 connector when a compressed frame is
transmitted.
2. Press the
Mode Setup softkey 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 compressed frame signal, if you have a spectrum analyzer or some other measuring equipment
connected, is you can see the changes as they are applied to the signal. However you may experience a slight
delay in signal processing while the ESG updates the W-CDMA signal with any changes that are made. If
you want to configure a spectrum analyzer to view the ESG signal during the setup, see “Viewing the
Multiple TGPSI Signal” on page 540.
Ensure that DPCH
is Showing
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