Problems With Wireless Connectivity - Intermec CK60 User Manual

Chapter 4 — Maintaining the Computer
Problem
You are setting up multiple access points in a network, with
different SSIDs, and the connection fails.
You receive a message saying "The server certificate has
expired or your system date is incorrect" after you perform a
cold-boot on the CK60.

Problems with Wireless Connectivity

Problem
When you turn on the CK60 after it was suspended for a
while (10-15 minutes or longer), it can no longer send or
receive messages over the network.
The No Network Connection icon appears on the toolbar.
The CK60 is not communicating with the access point.
The CK60 is connected to the Intermec Application Server
or host computer and you move to a new site to collect
data. The Network Connection icon was visible, but now
replaced with the No Network Connection icon.
The Network Connection icon is in the toolbar, but you
cannot establish a terminal emulation session with the host
computer.
The Network Connection icon is in the toolbar, but the
host computer is not receiving any data from the CK60.
70
Problems Transmitting Data through the Serial Port
If you are having problems sending or receiving data through the integrated
serial port on the CK60, check these possible problems:
• Make sure the CK60 is connected to the PC, host computer, or RS-232
serial device using the appropriate cable adapter and null modem cable.
• If the CK60 is in a communications dock, make sure the
communications dock is connected to the serial device using the
appropriate cable.
Solution
The CK60 does not save WEP key values when changing
the SSID. Reenter the WEP key value after changing the
SSID, select Apply Network Settings from the 802.11
Radio menu. You should now be able to connect to the
different access points.
Date and time are not saved when a cold-boot is performed.
Reenter the date and time, then select Apply Network
Settings from the 802.11 Radio menu.
Solution
Host may have deactivated or lost current terminal
emulation session. In a TCP/IP direct connect network,
turn off the "KeepAlive" message from host to maintain the
TCP session while a CK60 is suspended.
The CK60 is not connected to access point. Ensure access
point is turned on and operating. Move closer to access
point to reestablish communications. Ensure CK60 is
configured correctly for network. CK60 radio parameters
must match all access point values
If you have an 802.11b radio and its radio initialization
process failed, reset the CK60 (see
If No Network Connection icon still appears, you may
have a defective radio card. For help, contact your local
Intermec representative.
Move closer to an access point or to a different location to
reestablish communications until the Network Connection
icon appears. Any data you collected while out of range is
transmitted over the network.
There may be a problem with the host computer, with the
connection between the Intermec Application Server and
the host computer, or with the connection between the
access point and the host computer. Check with network
administrator to make sure the host is running and allowing
users to login to the system.
In a UDP Plus network, there may be a problem with the
connection between the Intermec Application Server and
the host computer. Check with network administrator or
see the user's manual for the Intermec Application Server.
In a TCP/IP network, there may be a problem with the
connection between the access point and the host
computer. Check with network administrator or use your
access point user's manual.
CK60 Mobile Computer with Windows CE User's Manual
(page 83).
page 4).