User guide

troubleshooting basics
troubleshooting basics
2524
Troubleshooting Basics
A basic level of understanding of troubleshooting should be achieved during the
training on the system. This guide will help you understand and incorporate solutions
to the most common issues related to this new technology.
Main technical issues
• Sensor to meter glucose comparison – the numbers don’t match
• Sensor calibration – how to do this
• Error alarms – what to do when you get one
• Communication interruption
• Adhesive and skin issues
• Software and downloading
Note: This guide is meant to augment the existing User Guides for the device(s) you are using.
Tips for the more common technical troubleshooting:
• Lost sensor during initialisation
No Transmitter ID entered or entered incorrectly.
Connections not ‘clicked’ in place.
• No antenna icon after sensor insertion
Forgot to go to ‘START NEW SENSOR’ and press ACT.
• No ISIG: only ‘----’ in sensor status
Sensor not fully connected to transmitter on both sides (two clicks).
No transmitter ID.
Have not started sensor or dead sensor.
• Weak Signal/Lost Sensor
Transmitter and pump not in close enough proximity. Relocate and wait.
• Calibration Error
A calibration was entered that is outside of the acceptable range of the
current algorithm. May be caused by:
• Sensor end
• Great discrepancy between entered meter value and sensed value
• Low sensor ISIG
Note: Often the solution to the problem is overlooked due to its simplicity. Trial and error and patience helps!
Blood Glucose Meter Readings vs.
Sensor Glucose Readings
Your ngerstick BG and sensor glucose will not always match exactly. This is because the glucose
levels in dierent parts of the body are not always the same. Most of the time, the sensor glucose
readings will be within 20% of your meter readings. When your glucose level is changing quickly,
there may be dierences of more than 20%.
This is what a dierence of 20% can look like:
Meter Reading
Sensor Glucose
Reading with 20%
Less
Sensor Glucose
Reading with 20%
More
3.4 2.7 4.0
4.5 3.5 5.3
5.6 4.4 6.6
11.1 8.9 13.3
16.7 13.3 20.0
BG meter readings themselves can also vary from real BG levels. This dierence can be also as
much as 20%.
Performing accurate ngerstick BG measurements:
• It is important to obtain accurate ngerstick BGs when using your Continuous Glucose
Monitoring system
• Using your meter and strips the right way gives you more exact results
• Make sure your ngers are clean and dry when you check your BG
• Always use your ngers when testing your BG for calibration. Do not use your arm or
leg to get a BG reading
• Be sure the code entered in your meter matches the test strips you are using
All values
in mmol/L