Setting The Mobile Base Up For Communications; Connecting The Cables - Hand Held Products Dolphin 9500 User Manual

Setting the Mobile Base Up for Communications

The Mobile Base RS-232 interface allows the Dolphin terminal to communicate to a personal computer, modem, or any standard
RS-232 device using a standard serial cable and communications software.

Connecting the Cables

Connect the Mobile Base to the host computer or other device by plugging an RS-232 serial cable into the RS-232
Communications Port on the bottom of the Mobile Base. Plug the other end of the RS-232 serial cable into the correct port on
the host RS-232 device.
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 Mobile Base Communication Port is configured as a DCE device. To communicate with a DTE device such as a computer,
use a standard (or straight-through) RS-232 cable. 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.
RS-232 Pin Configuration
Mobile Base /Host Port
(DCE)
Pin / Input Signal
2 / (RD)
3 / (TD)
5 / (SG)
4 / (DTR)
6 / (DSR)
7 / (RTS)
8 / (CTS)
Refer to this table if you want to make your own cables. To do so, you must determine if your host RS-232 device is
• 9-pin or 25-pin and
• configured as a DCE or DTE device.
Dolphin® 9500 Series Mobile Computer User's Guide
IBM AT DB9 IBM XT DB25
(DTE) (DTE)
2 3
3 2
5 7
4 20
6 6
7 4
8 5
Modem DB25
(DCE)
2
3
7
6
20
5
4
13 - 7