User manual

Appendix B: Port Pinouts
DB-26 Auxiliary Port Pinout
B-2
Psion Teklogix 8525/8530 Vehicle-Mount Computer User Manual
B.3 DB-26 Auxiliary Port Pinout
Pin
No.
Signal And Description
1 EXT_5V_SW – Configurable 5V power for External devices (such as USB).
1/2 Amp max.
2 EXT_5V_SW – Same as above.
3 MIC_IN – Microphone input.
4 MIC_GND – Microphone signal ground.
5 Speaker + (positive).
6 Speaker - (negative).
7 GND - Signal Ground
8 USB_HOST_PORT_4_PLUS - for connecting external devices such as key-
boards, mice, printers.
9 USB_HOST_PORT_4_PLUS - for connecting external devices such as key-
boards, mice, printers.
10 GND - Signal Ground.
11 USB_DEVICE_PLUS – For connections to USB Hosts such as computers.
12 USB_DEVICE_NEGATIVE – For connections to USB Hosts such as com-
puters.
13 GND - Signal Ground.
14 USB_HOST_PORT_3_PLUS – For connecting external devices such as
keyboards, mice, printers.
15 USB_HOST_PORT_3_NEGATIVE – For connecting external devices such
as keyboards, mice, printers.
16 GND – Signal Ground
17 CONSOLE_RXD – Console Port (RS-232) Receive Data ** Internal use
only.
18 CONSOLE_TXD – Console Port (RS-232) Transmit Data ** Internal use
only.
19 GND – Signal Ground