User's Manual

162 | Continuous Glucose Monitoring System

OUT OF RANGE/NO ANTENNA: The Receiver and Transmitter

are not talking and your glucose readings have not been sent to the

Receiver in the last 5 minutes. If you see this screen (with no Antenna

Symbol

in the upper left hand corner) you should make sure the

Receiver and Transmitter are within 20 feet (6m) of each other. See

Chapter 8 for Troubleshooting.

UNKNOWN SENSOR GLUCOSE READINGS: appears in the

upper right corner of the Trend Graph. The Sensor is sending glucose

readings that the Receiver does not understand.

15 MINUTE CALIBRATION ERROR: The Sensor cannot calibrate.

If you see this screen, enter at least 1 more ﬁ ngerstick reading for

calibration after about 10-15 minutes. If no glucose readings appear

on the Receiver, the Sensor needs to be replaced.

1 HOUR CALIBRATION ERROR: The Sensor is not calibrating

correctly. If you see this screen, wait approximately 1 hour and

then enter at least 1 more ﬁ ngerstick reading for calibration. If no

glucose readings appear up on the Receiver, the Sensor needs to be

replaced.

WAIT: The Single Hourglass Symbol

in the upper right hand

corner means the Receiver has detected a potential problem with the

Sensor signal. You should wait about 30 minutes for more prompts.

Do not enter any ﬁ ngerstick readings for calibration when you see this

symbol.

ERROR CODE: The Receiver may not be working correctly. If you

see this code, write the code down for troubleshooting and use your

meter to check your blood glucose readings.

SYSTEM RECOVERY: The Receiver discovered an error that it was

able to ﬁ x itself. Press any Receiver button to clear this display. Your

Sensor session will continue.

6-HOUR SENSOR EXPIRATION NOTIFICATION: Your Sensor

session will end in 6 hours.