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Rev D
Dolphin® 7900 Series User’s Guide
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.
Pin #
Description
1
Internal Jumper to Pin 6
2
TXD
3
RXD
4
DSR
5
GND
6
DTR
7
CTS
8
RTS
9
5 VOLT OUT
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