Digi TX54 User Manual page 106

Interfaces
Poor: -116 dBm to -120 dBm
n
No service: < -120 dBm
n
Signal strength for 3G and 2G connections
For 3G and 2G cellular connections, the current RSSI value determines signal strength.
Excellent: > -70 dBm
n
Good: -70 dBm to -85 dBm
n
Fair: -86 dBm to -100 dBm
n
Poor: < -100 dBm to -109 dBm
n
No service: -110 dBm
n
Tips for improving cellular signal strength
If the signal strength LEDs or the signal quality for your device indicate Poor or No service, try the
following things to improve signal strength:
Move the TX54 device to another location.
n
Try connecting a different set of antennas, if available.
n
Purchase a Digi Antenna Extender Kit:
n
Antenna Extender Kit, 1m
l
Antenna Extender Kit, 3m
l
AT command access
To run AT commands from the TX54 command line:

Command line
1. Log into the TX54 command line as a user with Admin access.
Depending on your device configuration, you may be presented with an Access selection
menu. Type admin to access the Admin CLI.
2. At the Admin CLI prompt, type modem at-interactive and press Enter. Type n if you do not
want exclusive access. This allows you to send AT commands to the device while still allowing
the device to connect, disconnect, and/or reconnect to the cellular network.
3. At the Admin CLI prompt, use the
session:
> modem at-interactive
Do you want exclusive access to the modem?
If the device has more than one modem, identify the modem by name, for example:
> modem at-interactive name wwan1
Do you want exclusive access to the modem?
TX54 User Guide
modem command to begin an interactive AT command
(y/n) [y]:
(y/n) [y]:
Wide Area Networks (WANs)
106