
Chapter 15 403
W-CDMA Uplink Digital Modulation for Receiver Test
Overload Testing with Multiple PRACHs—Multiple ESGs
Figure 15-36 ESG 1 and ESG 2 Frame Timing Setup
Setting Up the LF Output as the PRACH Start Trigger Signal
While the equipment setup shows ESG 1 as providing the PRACH start trigger signal, the
signal can be provided by either ESG 1, ESG 2, or an external source. Perform the following
steps for ESG 1:
1. Press
LF Out > LF Out Source > Function Generator.
ESG 1 is Synchronized
with the BTS Timing
Signal
ESG 1 has Received the
PRACH Start Trigger
(will gray-out when a
trigger is required)
Set to FClk
Set to Cont
ESG 2 is Synchronized
with the ESG 1 Timing
Signal
ESG 2 has Received the
PRACH Start Trigger
(will gray-out when a
trigger is required)
Set to ESG
Set to Cont
ESG 2
ESG 1
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