User guide

WA_DEV_GL6100_PTS_001 Rev 002 May 24, 2010 57
11. Troubleshooting the GL61x0
This section of the document describes possible problems that might be encountered when using the
GL61x0 and their corresponding solutions. To read about other troubleshooting information, refer to
the FAQs (Frequently Asked Questions) page at http://www.sierrawireless.com.
Caution: Again, make sure to only use a cable that is compatible with the GL61x0 variant (that is, use the
adaptive cable for the GL6100, and use the Micro-fit
®
USB cable for the GL6110) to avoid damaging
either the GL61x0 or the PC.
11.1. GL6100 – RS232 Version
11.1.1. No Communications with the GL6100 through the
Serial Link
If the GL6100 does not answer to AT commands through the serial link, refer to the table below for
possible causes and their corresponding solutions.
Table 40: No Communications with the GL6100 Through the Serial Link
If the GL6100
returns
Then ask
Action
Nothing
Is the GL6100 powered correctly?
Make sure that the external power supply is
connected to the GL6100 and provides a
voltage within the range of 4.75V to 32V.
Is the serial cable connected at both
sides?
Check the serial cable connection.
Does the serial 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 GL6100.
The GL6100 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.