Troubleshooting  R&S XU 4200 
 4.23 6166.5368.02.01 
Code Message Level Config Note  Action 
0440  RX RST REQ RC  W  –  After RC client sends 
an RST command to 
RX module, but before 
reboot. 
This event is for 
information only (see 
chapter 4.2.3). 
 
 
Unexpected Radi o Restar t\Unexpect ed Radio Rest art "Radio".do c
 
 
4.2.3  Unexpected Radio Restart 
This chapter 
This chapter describes the process of troubleshooting and possible restart 
triggers in case of an unexpected restart of the radio. 
 
Radio restart 
triggers 
There are two main radio restart triggers: 
  External triggers (can be requested, e.g. user, remote client; or 
unrequested, e.g. power line interruption) 
  Internal triggers (always unrequested, e.g. WatchDog (WD), Partition 
Management) 
 
In order to recognize the exact trigger of the radio restart, it is necessary to 
analyze Event logs of the TX and RX modules of the radio. 
Every time the radio restarts (or is powered up), it stores the restart-related 
events in the event logs at a certain point of booting process: 
 
  001 RESTART – indication of radio restart 
  110 MMI PART a b c – indication of MMI booted partition 
  351 TX PART a b c – indication of TX booted partition (TX only) 
  439 RX PART a b c – indication of RX booted partition (RX only)