472 Chapter 16
W-CDMA Uplink Digital Modulation for Receiver Test
Generating a Single PRACH Signal
Figure 16-18 Displayed ESG Signal
Using the AICH Feature with a Base Transceiver Station
Figure 16-19 shows the AICH feature connection with the AICH being provided by the base station. While
the ESG cannot demodulate an actual AICH signal, the base transceiver station can be configured to output
a TTL trigger signal that is timed with the AICH transmission. This trigger signal can then be used as the
AICH trigger for the ESG to transmit its message part. Or if you prefer, you can follow the instructions
shown in “Setting Up the LF Output as the AICH Signal” on page 471, and use the ESG’s LF output as the
AICH trigger source.
Preambles
PRACH Message—AICH Received
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