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Dolphin® 7900 User’s Guide
Rev F
10/16/07
13 - 7
RS-232 Communications
Connecting the Cables
Connect the HomeBase to the host computer or other device by plugging an RS-232 serial cable into the
RS-232 Port
(see page
13-3) on the back panel. The wiring of your cable depends on whether the other device is set up as a Data Communications
Equipment (DCE) or Data Terminal Equipment (DTE) device.
The HomeBase communication port is configured as a DCE device. To communicate with a DCE device, use either a null modem
adapter in line with a standard RS-232 cable, or a null-modem serial cable. To communicate with a DTE device such as a PC,
use a standard (or straight-through) RS-232 cable.
You can make your own cables by following the pin configuration in the chart below. To do so, you must determine if your host
RS-232 device is 9-pin or 25-pin, and whether it is configured as a DCE or DTE device.
RS-232 Pin Configuration
Note: The HomeBase cannot be daisy-chained.
Setting up the Terminal for ActiveSync Communications via RS-232
Tap Start > Programs > ActiveSync > Menu and verify that ‘115200 Default is selected as the connection method.
Setting up the PC for ActiveSync Communications
ActiveSync must be installed and configured for RS-232 on the desktop computer to sync successfully with a Dolphin terminal
that is configured for RS-232 communication. Verify that ActiveSync on the PC has the correct ActiveSync Connection Settings.
Open ActiveSync and click File > Communication Properties.
Note: You can have the USB connection box checked in addition to the serial cable box without affecting processing. However,
you should use RS-232 or USB.
HomeBase /Host Port
(DCE)
IBM AT DB9
(DTE)
IBM XT DB25
(DTE)
Modem DB25
(DCE)
Pin / Input Signal
2 / (RD)
2
3
2
3 / (TD)
3
2
3
5 / (SG)
5
7
7
4 / (DTR)
4
20
6
6 / (DSR)
6
6
20
7 / (RTS)
7
4
5
8 / (CTS)
8
5
4
Summary of Contents for Dolphin 7900
Page 1: ... User s Guide With Microsoft Windows Mobile 5 0 ...
Page 14: ...1 6 Rev F 10 16 07 Dolphin 7900 User s Guide ...
Page 26: ...2 12 Rev F 10 16 07 Dolphin 7900 User s Guide ...
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