User`s guide

452 Chapter 15
W-CDMA Uplink Digital Modulation for Receiver Test
W-CDMA Uplink Concepts
Out Sync Annunciator
When the timing of the external frame synchronization signal does not match the signal
generator’s frame generation, the Out Sync annunciator is displayed. Out Sync replaces
Sync Trg under these conditions.
The signal generator’s frame synchronization method depends on the trigger mode selected:
Single Trigger The frame timing is adjusted at the first trigger. All triggers, except the first
one are ignored and not used for signal generator frame timing.
Continuous
Trigger All external triggers are used to adjust the signal generator’s frame timing.
Figure 15-71 describes trigger mode and synchronization patterns.
Figure 15-71 Trigger Mode and Synchronization