C
ONNECTING
4
4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
4.2 USB Serial Connections . . . . . . . . . . . . . . . . . . . . . . . . . . 46
4.3 Bluetooth Wireless Connections . . . . . . . . . . . . . . . . . . . . . . 48
7535 Hardware Reference Guide 43
Chapter 4: Connecting
Overview
4.1 Overview
This chapter provides connection information specific to the 7535, for connecting to the device through the following methods:
•
USB serial link. See section 4.2 on page 46.
•
Bluetooth short-range wireless link. See section 4.3 on page 48.
The ActiveSync software from Microsoft can be used to establish communication with the device, once the physical connection has been made.
Once an ActiveSync connection has been made over a USB serial link, ActiveSync can be used over a wireless connection such as Bluetooth. Software can then be deployed as described in the Developers’ Guide.
4.1.1 Setting Up ActiveSync
ActiveSync allows you to connect the 7535 to a PC through USB or Bluetooth communication. File transfers, file synchronization and sending e-mail can all be done via ActiveSync.
Important: ActiveSync must be connected and synchronized, and a ‘Partnership’ set up, through USB at least once before other connection types are possible.
Install the most recent version of ActiveSync on your PC (check the Microsoft website for the latest software).
Connection Types
There are two types of connection provided for by ActiveSync:
• Guest - A guest connection allows file transfers. No synchronization is performed. If the 7535 is password protected, the password prompt will appear when connecting as guest.
• Partnership - A partnership connection allows for synchronization of files, e-mail and other data. If the 7535 is password protected, a password prompt will appear before allowing synchronization.
You can disconnect any ActiveSync connection by double-clicking on the blue icon in the 7535’s system tray and selecting the Disconnect button from the dialog.
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Chapter 4: Connecting
USB Serial Connections
Double-click the PC Connection icon in the Control Panel. The PC Connection
Properties dialog appears. Verify that the checkbox that allows connection to the desktop is checked:
“Connect Using” specifies the port to be used for connecting to the PC:
• USB specifies using the USB Type-B (client) port of the 7535. This port is provided on the Portable Docking Module.
• Bluetooth specifies using the internal Bluetooth connection of the 7535 (if present). This connection may have a different name.
To change the connection type, click on the Change Connection... button and select the connection from the dropdown list.
4.2 USB Serial Connections
The USB architecture defines a “host” device that can communicate with up to 127 client devices through a serial connection. When the host device powers up, it queries the USB bus, identifying devices.
USB serial connections are available at a number of different data rates.
• “High speed” USB devices communicate at 480 Mb/s.
• “Full speed” USB devices communicate at 12 Mb/s.
• “Low speed” USB devices communicate at 1.5 Mb/s.
USB devices may be self-powered, or powered through the USB cable.
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USB Serial Connections
Any device that draws less than 100 mA from the USB cable is called a “low-powered” device; this includes self-powered devices that need no power, as well as devices such as tablets and mice that need little power.
Devices that draw more than 100 mA from the USB cable are called “high-powered” devices. The USB cable must be connected to another device that can supply this power.
The 7535’s Portable Docking Module is not rated to supply power to high-powered
USB devices.
USB cables can have two types of connectors. The ‘type-A’ connectors, found on USB host devices such as desktop computers, are wide and flat. The ‘type-B’ connectors, found on peripherals, are narrower and squarer.
USB cable lengths are limited. Full-speed cables are a maximum of 5 m long.
To connect using ActiveSync via USB:
1. Connect the USB cable to the USB type-A port on your computer.
2. Connect the other end of the USB cable to the 7535’s USB type-B port.
This port is the square connector on the left side of the Portable
Docking Module (labelled with the symbol).
On the 7535...
3. Open the 7535’s Control Panel.
4. Double-click on the PC Connection icon. The PC Connection dialog opens.
5. Verify that the Use Connection checkbox is checked and that the unit will connect using USB.
On the development PC...
6. Double-click on the ActiveSync icon in the system tray. The Active-
Sync menu appears.
7. Select Connection Settings. The Connection Settings dialog appears.
8. Place a checkmark in the checkbox labeled Allow USB connection
with this desktop computer.
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Chapter 4: Connecting
Bluetooth Wireless Connections
9. Press OK. The Settings dialog disappears.
10. Select File, Get Connected. The Get Connected wizard appears.
11. Press Next. ActiveSync searches for a connection.
On the 7535...
12. Select Start, Programs, ActiveSync, direct. A dialog appears, indicating that the 7535 is attempting to connect.
13. A successful connection is indicated by a blue icon in the 7535’s system tray. The 7535 and the PC will also play sounds to indicate that they are connected, if sound is enabled on the devices.
4.3 Bluetooth Wireless Connections
Bluetooth wireless connections use a short-range wireless link to implement peerto-peer “piconets” of up to seven devices.
Each device on the piconet is identified by a three-digit MAC. An individual device can be a member of more than one piconet. Different piconets are distinguished by different frequency-hopping codes. Bluetooth radios use FHSS in the unlicensed
2.4-GHz ISM band.
Bluetooth radios are divided into three power classes:
1
2
3
Power Class Maximum Output
100 mW
2.5 mW
1 mW
Power
(20 dBm)
(4 dBm)
(0 dBm)
Table 4.1 Bluetooth Power Classes
Bluetooth connections can run at up to 740 kb/s, with a range of up to 10 metres for classes 2 and 3, and 100 metres for class 1.
To connect using Bluetooth, you will need:
• A 7535 with an internal Bluetooth card.
• A PC with Bluetooth and ActiveSync.
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Bluetooth Wireless Connections
• An existing ActiveSync partnership between the 7535 and the PC. This partnership must be established through the USB connection.
To connect:
1. Select Blue + 0. The Start Menu opens.
2. Select Settings. The Control Panel opens.
3. Double-click on the Bluetooth Device Properties icon.
The Bluetooth Manager dialog opens.
4. Ensure that the development PC is powered on and that its Bluetooth radio is enabled.
5. Click on the Scan Device button and wait for the 7535 to complete its scan (approximately 20 seconds). Services offered by discovered devices, such as the PC, will be displayed in the list box. Each service of a device receives a separate entry:
If the discovered device has been given a unique name by its owner, that name is used to identify it.
Note: You can change the device-name and description of your 7535’s radio by
clicking on the System icon in Control Panel, which will open the System
Properties page. Click on the Device Name tab to access the menu and change your settings. Then click on OK.
Although the name will have changed in the Property screen, the radio only reads it on boot-up. Therefore, for the changes to take effect, you must cold-
boot or warm-boot the 7535.
6. A discovered device may display several service profiles that it can use to communicate. Supported services that can be activated include: dialup networking service, serial connection for printing, and LAN access using PPP.
7. Highlight the PC’s service profile in the list, then double-click on it. A properties menu appears.
8. Select Active to make this service active.
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Chapter 4: Connecting
Bluetooth Wireless Connections
9. Select Trusted to make this service trusted. A dialog appears asking whether authentication is needed.
10. If authentication is needed for the service, click Yes, then enter the PIN.
When the 7535 tries to connect with a remote device that has Authentication enabled, you will be prompted to verify the PIN. The Authentica-
tion Request dialog will appear. Enter the PIN, press OK, and the devices will be connected.
11. Press OK. The Bluetooth Manager disappears, and the Control Panel reappears.
12. Double-click on the PC Connection icon. The PC Connection
Properties dialog appears.
13. Press the Change Connection button. The Change Connection dialog appears.
14. Select Bluetooth from the dropdown list in the Change Connection dialog.
15. Press OK. The Change Connection dialog disappears, revealing the PC
Connection Properties dialog.
16. Press OK. The Control Panel reappears.
On the PC...
17. Select File, Connection Settings in the ActiveSync window, or double-click on the ActiveSync icon in the system tray. The ActiveSync menu appears.
18. Select Connection Settings. The Connection Settings dialog appears.
19. Place a checkmark in the checkbox labeled Allow serial cable or
infrared connection to this COM port.
20. Select the COM port assigned to the Bluetooth radio.
21. Press OK. The Settings dialog disappears.
22. Select File, Get Connected. The Get Connected wizard appears.
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Bluetooth Wireless Connections
23. Press Next. ActiveSync searches for a connection.
On the 7535...
24. Click on the Start button, then Programs, then ActiveSync, and select
remote from the ActiveSync submenu. A dialog appears, indicating that the 7535 is attempting to connect.
25. A successful connection is indicated by a blue icon in the 7535’s system tray. The 7535 and the PC will also play sounds to indicate that they are connected, if sound is enabled on the devices.
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