
404 Chapter 15
W-CDMA Uplink Digital Modulation for Receiver Test
Overload Testing with Multiple PRACHs—Multiple ESGs
2. Press LF Out Waveform > More (1 of 2) > Pulse.
3. Press
LF Out Period > 80 > msec.
This sets the trigger to occur every 80 msec.
4. Press
LF Out Width > 8 > usec.
5. Press
LF Out Amplitude > 3 > Vp.
Three volts was selected because the BURST GATE IN is a CMOS connection.
6. Press
LF Out Off On to On.
Figure 15-37 shows how the LF output display looks after all the steps from this procedure
have been completed.
Figure 15-37 LF Output Setup
You now have two ESG output signals that are transmitting a combined total of 16 UEs. The
BTS can be configured to try and identify each individual PRACH or configured to identify an
individual UE from among the 16 transmitted PRACHs.
Comentarios a estos manuales