User's Manual

Table Of Contents
Chapter 2: Basic Checkout
Calibrating The Touchscreen
Psion Teklogix 7545 Hand-Held Computer User Manual 19
2.5 Calibrating The Touchscreen
If you have the 7545 touchscreen feature, it is factory-calibrated and ready-to-go; however,
over time the touchscreen's operating parameters may change, and it may need to be recali-
brated for correct operation. Refer to “Calibrating The Touchscreen” on page 51 for details.
2.6 Configuring Your Radio
Psion Teklogix provides two types of 802.11 Compact Flash (CF) wireless LAN radio cards
for the 7545: the Motorola RA2043a/b/g radio and the Summit RA2041b/g radio. Both
models are Direct Sequence Spread Spectrum radios.
If your 7545 is equipped with an RA2041 CF radio, follow the steps under “Summit Client
Utility (SCU) For 802.11b/g Radio” on page 28 to set up this type of radio for communica-
tion with a wireless LAN.
If your computer is equipped with an RA2043 CF radio, follow the steps outlined under the
heading “Configuring An IEEE 802.11 Radio In The Unit”, below.
2.7 Configuring An IEEE 802.11 Radio In The Unit
The most common 802.11 settings are configured as defaults. However, there are some
fields that must be completed, including the SSID of your access point and the security
methods implemented in the network (including access keys).
To configure the 802.11 radio:
1. Tap on Start>Settings>Network and Dial-up Connections. (If the Start Menu isn’t
displayed in the taskbar, press [BLUE] [0] to display it.)
Note: Keep in mind that 7545 Hand-Held Computers can be ordered with or without
touchscreens, and that the touchscreen function can be turned off (see “Touch” on
page 124).
Note: In most situations the configuration of your 802.11 radio will require parameters,
settings, and access keys from a network administrator.
Network administrators should review the detailed security information in this sec-
tion in order to effectively configure the 802.11 wireless network.
Important: If the 7545 is equipped with a radio that has never been configured, the
radio settings dialog box opens automatically when the unit is powered on.
In this case, skip to Step 4 on page 21.
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