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Dolphin® 7850 Mobile Computer
User’s Guide
Rev C
4/30/2008
9 - 3
Back Panel
Auxiliary Battery Well
The auxiliary battery well charges an additional Li-ion battery pack independently of the
terminal well. This feature ensures that you can always have a fully-charged battery for your
terminal; see Charging a Spare Battery Pack on page 9-3.
DC Power Jack
Connect the power cable to this power jack; see Powering the HomeBase Device on page 9-5.
Handle Saddle
The curve on the back wall of the terminal well accommodates the pistol-grip handle when the
terminal is seated in the well.
RS-232 Port
For RS-232 data communication, use the 9-pin, RS-232 cable from Honeywell to connect this
port to a peripheral device. For more information, see RS-232 Serial Connector on page 9-6.
USB Port
This USB Port is full-speed, 2.0 compliant, and requires ActiveSync 4.1 or higher. Using a USB
cable, you can connect the HomeBase device to a USB-compliant device. When the
HomeBase device is connected to that device, the terminal is connected to the device when
seated in the terminal well.
The HomeBase device acts as a USB device by interfacing the USB signals of the terminal to
the USB signals of the host workstation; see ActiveSync Communication on page 9-8.
Charging a Spare Battery Pack
The Auxiliary Battery Well (see page 9-3) located on the back panel charges a spare battery. The AUX
Battery LED (page 9-2) on the front panel indicates the charge status of the battery in this well. Charge
time is less than four(4) hours and the charge process is independent of the terminal well.
1. Insert the end of the battery without the locking tab into the bottom of the auxiliary well opening.
Auxiliary
Battery
Well
DC Power
Jack
RS-232 Port USB Port
Handle Saddle