Dolphin 7400 User Manual page 67

Set the Dolphin HomeBase/IntelliBase/IntelliBase+ on a dry, stable surface, such
as a desktop near an electrical outlet. Be sure to provide enough workspace with
good lighting for the user to view and operate the Dolphin terminal while it is in the
HomeBase/IntelliBase.
Connecting the Cables
Connect the HomeBase/IntelliBase/IntelliBase+ to the host computer or other
device by plugging an RS-232 serial cable into the RS-232 Communications Port
on the rear of the HomeBase. The wiring of your cable depends on whether the
other device is set up as a DCE (Data Communications Equipment) or DTE (Data
Terminal Equipment) device.
The HomeBase/IntelliBase 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.
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.
Pin Configuration
HomeBase /Host IBM AT
Port (DCE) DB9 (DTE)
Pin / Input Signal
2 / (RD) 2
3 / (TD) 3
5 / (SG) 5
4 / (DTR) 4
6 / (DSR) 6
7 / (RTS) 7
8 / (CTS) 8
The HomeBase/IntelliBase
Connect the power supply to the charging/communication cradle. Plug the AC
transformer into the Dolphin HomeBase/IntelliBase 5 Volt DC power supply
connector. The AC wall transformer provided can power only one HomeBase/
IntelliBase. HHP recommends that you leave the Dolphin HomeBase/IntelliBase/
IntelliBase+ connected to its power source at all times, so that it is always ready to
use.
IBM XT Modem
DB25 DB25 (DCE)
(DTE)
3 2
2 3
7 7
20 6
6 20
4 5
5 4
be daisy-chained.
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