Hand Held Products 7900L00-414C50E - Dolphin 7900 User Manual page 220

RS-232 Serial Communications Port
Use a standard serial cable to connect to the host device via RS-232. The following diagram displays the pin
diagram of the serial connector of the bottom panel of the Mobile Base.
Signals referenced are for a DTE device.
The Mobile Base connector is straight to the printed circuit board (PCB). The ninth pin sends 500mA at 5 Volts
power out. This can power a peripheral device, such as a mobile printer, as long as that peripheral device can
accept 500mA at 5 Volts.
14 - 4
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Pin #
1
2
3
4
5
6
7
8
9
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Description
Internal Jumper to Pin 6
TXD
RXD
DSR
GND
DTR
CTS
RTS
5 VOLT OUT
Rev D Dolphin® 7900 Series User's Guide