User guide

Appendix B: Diagnostics Output Data (D-packets)
D2119 Dart RTLS User Guide 120
Health State Change
 Description: This D-packet message is sent when there is a change in system
health state.
 Recommended Action: None.
 Message Type: The event packet is sent only once whenever a change in
system health state is detected.
 Message Format:
Dart: D, Current_Health_State, Latched_Health_State,
Outstanding_Error_Types, Outstanding_Warning_Types, 0, timestamp,
DpacketID,‘Health State Change.’
CPU temperature too high
 Description: This D-packet message is generated if the CPU temperature of
UWH-1200 hub is too high ( above 85C).
 Recommended Action: Inspect the environment to see what is causing the
temperature to spike.
 Message Type: The event packet is sent every minute until the temperature
drops back down below 85C.
 Message Format:
Dart: D,0,0,0,0,0,timestamp,DpacketID,‘Error: CPU temperature too high’
USB Rx Failure
 Description: This D-packet message is sent when there are consecutive USB
receive failures.
 Recommended Action: None.
 Message Type: Sent every instance where 5 or more consecutive receive
failures are detected.
 Message Format:
Dart: D,0,0,0,0,0,timestamp,DpacketID,‘Error:USB receiving failure.’

Health Tag Failure
 Description: A health tag with tag ID <hthTagID>, configured to be at location(
x,y,z), has a locate percentage or error radius value over the threshold
specified.
 Recommended Action: None.
 Message Type: This event packet is persisted until the locate percentage and
error radius values fall back within threholds specified for the measurement
period specified.
 Message Format:
Dart: D,hthTagID,x,y,z,battery,timestamp,DpacketID,‘Error:health tag
failure(Locate percentage Error radius)’
Health tag battery low
 Description: This D-packet message is sent approximately every minute on
each health tag whose battery is low.
After receiving 60 consecutive tag reports from a health tag with battery level
as low, the Dart RTLS Hub puts the health tag into battery low condition. This
message will be cleared once the battery status is normal again.
 Recommended Action: Replace health tag.
 Message Type: Sent every minute.
 Message Format:
Dart: D,hthTagID,x,y,z,battery,timestamp,DpacketID,‘Warning: Health tag
battery low’