User`s guide

84 | Dexcom G4 PLATINUM Continuous Glucose Monitoring System
8
Calibration
Needed
This symbol means you need to enter a calibration. This prompt will
show when it is time for your 12-hour calibration update or any other
time an additional calibration is needed (see Chapter 7, Section 7.2,
How to Calibrate).
Additional
Calibration
Needed
This symbol means you need to enter one more blood glucose value in
order to calibrate the system and start getting sensor glucose readings.
Glucose
Reading
Error
This symbol means the receiver does not understand the sensor signal
but is likely to recover. This symbol is related to the sensor only. You
should wait for more prompts and do not enter any blood glucose
values when you see this symbol (see Chapter 13, Section 13.4, System
Glucose Error for more information).
Out of
Range
This symbol means the receiver and sensor/transmitter are not
communicating. Make sure the receiver and sensor/transmitter are
within 20 feet of each other without obstruction (see Chapter 1, Section
1.4, Transmitter Overview).
8.3 GLUCOSE STATUS AREA SYMBOLS
The “status area” at the top of the trend graph may show any of the
status symbols below during your sensor session. You will not get
sensor glucose readings during the time a status symbol shows except
during the regular 12-hour calibration prompt.
Status Symbols
Status symbols show in the upper right of your trend graph.
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