9
3G/4G Cellular service verification
After completing set up of either mode of 3G/4G connection, it is important to determine that there is
adequate signal strength before deciding on a final installed position. Cellular coverage can vary, even
over a short distance and a bad placement of the AT&T AC8200 can result in substandard or even non-
existent cellular service.
You can check the signal strength at site of install by pressing the “reset” button on the back while
powered on with the 3G/4G Cellular USB modem inserted. A paper clip or other sharp object will be
required to properly depress this button.
The signal strength will be represented by a sequence of LEDs illuminated on the front panel. Up to 6
LEDs, starting with the “online” light may be illuminated depending on detected strength. The signal
strength will appear in this form for 5 seconds. At least three LEDs of signal strength are
recommended.
Figure 5: Cellular Signal Strength Display
The unit should be installed in a location that gives optimal signal strength.
