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Connecting the Cables
Connect the Mobile 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
Mobile IntelliBase. 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 DCE
(Data Communications Equipment) or DTE (Data Terminal Equipment) device.
The Mobile 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
Supplying Power to the Dolphin Mobile IntelliBase
The Mobile IntelliBase can be powered from either a 12 or 24 volt DC source.
Power is connected to the input power connector located on the rear of the Mobile
IntellieBase.
HHP recommends that you leave the Mobile 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
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