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Dolphin® 7200 User’s Guide 4 - 1
4
Dolphin 7200 RS-232
About Dolphin 7200 RS-232
The Dolphin 7200 handheld computer with micro-DB9 RS-232 port is a compact, high performance data collection terminal with
standard connectivity at a low cost. Through the terminal's micro-DB9 RS-232 port, the Dolphin 7200 can be connected to a host
computer to send and receive data.
The terminal's battery can be recharged through the RS-232 port using the Dolphin 7200 communication/charging cable and a
power adapter or the Dolphin HomeBase charging/communications cradle.
The Dolphin 7200 RS-232 can also connect to self-powered, RS-232-compliant peripherals, such as external modems and
printers, GPS receivers, electronic scales, and various input devices via the micro-DB9 RS-232 port. Wireless IrDA connectivity
remains available, allowing users to connect with IrDA-compliant printers through the IR port.
Cables
The following table shows pinout for the Dolphin 7200 terminal's micro-DB9 RS-232 port.
Note: The " RF_card" function call will turn off the 5V supplied on pin 9 of the 7200 RS-232 non-scan units. This already exists
in OS4.1 API.
The pin-out configuration is as follows:
Charging the Battery Through the RS-232 Port
Before initial use, the Dolphin 7200 RS-232 terminal should be charged for 24 hours.
1. Plug the adapter into electrical outlet.
2. Insert a battery pack into the battery well of the terminal.
3. Insert the micro-DB-9 RS-232 connector on the communication/charging cable into the micro-DB-9 port on the back of the
Dolphin 7200 RS-232 terminal.
4. Connect the Universal Power Charging Adapter (Part #PS9U-11) into the adapter end of the communication/charging cable.
Note: The charging adapter is a regulated 9V power supply and, due to the different connector, cannot be used with the
HomeBase.
For more on maintaining the batteries, see the section on Maintaining Batteries in Chapter 2.
Pin # Signal Description Direction
1 VCHG 9V Charging Voltage Input
2 TXD Transmit Data Output
3 RXD Receive Data Input
4 DSR Data Set Ready Input; looped to Pin 6
5 GND Ground
6 DTR Data Terminal Ready Output; looped to Pin 4
7 CTS Clear To Send Input
8 RTS Request To Send Output
9 / No Connectadd +5VDC Non scanning (blind) models only