User`s guide

Dexcom G4 PLATINUM Professional System User’s Guide | 169
SELECT button to clear the screen, this symbol shows in the
status area.
If you see this screen, wait at least 1 hour and
then enter 1 more calibration blood glucose
value. Wait 15 minutes. If this error screen still
shows, enter 1 more blood glucose value. Wait
another 15 minutes. If this error screen still
shows, the sensor needs to be replaced.
13.4 SYSTEM GLUCOSE ERROR
The system may tell you that it cannot provide a sensor glucose reading.
When this happens you will see either the glucose reading error symbol
or the wait symbol in the status area. These symbols mean
the receiver does not understand the sensor signal temporarily. These
symbols are related to the sensor only.
Wait for more prompts, and do not enter any blood glucose values
when you see these symbols. The system will not use a blood glucose
value for calibration when these symbols show (see Chapter 8, Section
8.3, Glucose Status Area Symbols in Both Real-Time and Blinded
Modes).
Wait 1 hour
calibration error screen
No glucose data ( )
in real-time mode
No glucose data ( )
in blinded mode