
414 Chapter 15
W-CDMA Uplink Digital Modulation for Receiver Test
DPCH
11.Press Apply Channel Setup.
When the Apply Needed annunciator appears, press the
Apply Channel Setup softkey. The
new settings are not be applied to the signal until this softkey is pressed.
Pressing this key disables the compressed mode trigger. Therefore, whenever this key is
pressed while transmitting in compressed mode, the following step will have to be
repeated.
12.Press
Compressed Mode Start Trigger.
The Comp trg annunciator appears and the ESG is now enabled to send compressed
frames.
The ESG does not transmit compressed frames until an external start trigger is received or
the
Compressed Mode Start Trigger softkey is pressed. Compressed frame transmission is
terminated when an external stop trigger is received, the
Compressed Mode Stop Trigger
softkey is pressed, or a parameter is changed and the
Apply Channel Setup softkey is pressed.
Figure 15-42 shows what the ESG display looks like when this procedure is completed.
Figure 15-42 Compressed Mode Setup
Viewing and Adjusting the Compressed Mode Signal
This procedure will show the ESG compressed signal output on the PSA display (Figure 15-43
on page 416) using the parameters set in the previous procedure, “Setting Up the Compressed
Mode” on page 411. In addition, you will learn how to set the compressed mode transmission
for a finite number or repetitions.
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