Sim Card; Associate Led Functionality - Digi XBee 3 Cellular LTE-M User Manual

Hardware
PWM duty cycle
79.39% or more
62.42% to
79.39%
45.45% to
62.42%
Less than
45.45%

SIM card

The XBee Smart Modem uses a 4FF (Nano) size SIM card.
CAUTION! Never insert or remove SIM card while the power is on!

Associate LED functionality

The following table describes the Associate LED functionality. For the location of the Associate LED on
the XBIB-CU-TH development board, see number 5 on the
LED status
On, solid
Double blink
Standard single blink
The normal association LED signal alternates evenly between high and low as shown below:
Where the low signal means LED off and the high signal means LED on.
When CI is not 0 or 0xFF, the Associate LED has a different blink pattern that looks like this:
Digi XBee® 3 Cellular LTE-M/NB-IoT Global Smart Modem User Guide
Number of LEDs turned
on
3
2
1
0
Blink
timing Meaning
Not joined to a mobile network.
The last TCP/UDP attempt failed. If the LED has this pattern,
½ second
you may need to check
(Protocol/Connection Indication)
Note This pattern applies only to the Transparent mode.
Other transmission modes do not affect the Associate LED
blink pattern.
1 second Normal operation.
Received signal strength (dBm)
-83 dBm or higher
-93 to -83 dBm
-103 to -93 dBm
Less than -103 dBm, or no cellular network
connection
XBIB-CU-TH reference.
DI (Remote Manager Indicator)
for the cause of the error.
SIM card
or CI
107