Honeywell 7900 manual Bottom Panel Features, Mechanical Connector, Powering Out

Bottom Panel Features

Note: Signals referenced are for a DTE device.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Mechanical Connector

Pin #	Description
1	+USB
2	PWR
3	N / C
4	N / C
5	N / C
6	N / C
7	GND
8	5V OUT
9	DTR
10	-USB
11	USB DET
12	RI
13	DSR
14	RXD
15	RTS
16	TXD
17	CTS

Mechanical Connector

The bottom panel of the Dolphin 7900 features a custom, industrial-grade connector with 17 pins. When seated in a Dolphin 7900 series peripheral, the terminal is powered, the main battery charged, and communication occurs via this connector. All Dolphin 7900 Series peripherals are designed to work exclusively with this connector.

The 17-pin connector communicates with Dolphin 7900 Series peripherals via RS-232 or USB. For RS-232, the maximum communication speed is 115 Kbps with seven baud rate settings. For USB, the communication speed is up to 12 Mbps. If the peripheral unit is connected to a PC, this connector also transmits data.

Powering Out

The mechanical connector also provides power out (to peripheral devices) 5V at 500mA. This means that, with the proper Hand Held Products’ cable, the terminal can power another device. By default, power out is disabled. To enable power out, alter the registry as follows:

[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial4]

Conn5Venable=1

Dolphin® 7900 Series Mobile Computer User’s Guide 3 - 9