Cables for the vehiclebase, Standard serial cable, Making your own cable – Hand Held Products Dolphin 7200 User Manual
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Cables for the VehicleBase
Standard Serial Cable
The following information applies only to the charging/communication version of the Dolphin VehicleBase.
The Dolphin VehicleBase provides a convenient interface that allows the Dolphin terminal to interface to a PC, printer, or any
other standard RS-232 device; see
RS-232 Main Comm Port Connector
To connect the Dolphin VehicleBase to
your RS-232 device, you will need an RS-232 cable. 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 Dolphin VehicleBase Main 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 use a null modem serial cable.
Making Your Own Cable
Before making a cable, you need to determine if your host RS-232 device is 9-pin or 25-pin, and whether the device is DCE or
DTE. Then, you can make your own cables by following the pin configuration in the following table.
VehicleBase /Host Port
(DCE)
IBM AT DB9
(DTE)
IBM XT DB25
(DTE)
Modem DB25
(DCE)
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