Sierra Wireless GL6110 User's Guide Page 58

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WA_DEV_GL6100_PTS_001 Rev 002 May 24, 2010 58
GL61x0 Product Technical
Specification and User Guide
Troubleshooting the GL61x0
11.2. GL6110 USB Version
11.2.1. No Communications with the GL6110 through the
USB
If the GL6110 does not answer to AT commands through the USB, refer to the table below for
possible causes and their corresponding solutions.
Table 41: No Communications with the GL6110 Through the USB
If the GL6110
returns
Then ask
Action
Nothing
Is the GL6110 powered correctly?
Make sure that the GL6110 is recognized by
the PC and the USB port provides a voltage
of 5V.
Is the USB Device Driver correctly
installed?
Refer to section 6.2.1.3 Setup
Communications with the GL6110: USB
Connection.
Is the USB cable connected at both
sides?
Check the USB connection.
Does the USB cable correctly follow
the pin assignments? Refer to section
6.2.1 8-pin Micro-Fit Connector for
more information on the serial cable
pin assignments.
Connect the cable by following the pin
assignments as given in Table 22: 8-pin
Micro-Fit Connector Pin Description.
Nothing or non
significant characters
Is the communication program properly
configured on the PC?
Ensure that the settings of the
communication program are compatible with
the settings of the GL6110.
The GL6110 factory settings are:
Data bits = 8
Parity = none
Stop bits = 1
Baud rate = 115200 bps
Flow control = hardware
Is there another program interfering
with the communication program (i.e.
conflict on communication port
access)?
Close the interfering program.
11.3. Receiving “ERROR”
The GL61x0 returns an “ERROR” message (in reply to an AT command) in the following cases:
The AT command syntax is incorrect. In this case, check the command syntax (refer to
document [7] Firmware 7.42 AT Commands Manual (Sierra Wireless Software Suite 2.32) for
more information).
The AT command syntax is correct, but was transmitted using the wrong parameters.
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