User's Manual Part 2

Psion Teklogix 7535 Hand-Held Computer User Manual B-1

APPENDIX B

PORT PINOUTS

B.1 7535 Tether Port Pinout

The tether port connector incorporates multiplexed undecoded scanner, decoded

scanner, RS232 serial, and USB interfaces. In order for it to operate, a special wiring

scheme is needed. If you have a need to create cables for the tether port, contact

Psion Teklogix and request document # 1010008 “Instruction Tether Port Termina-

tion”. Attempting to interface to the tether connector without following this docu-

ment may cause damage to the 7535 or the tethered device.

B.2 Docking Station Connector

1. Ext 5V Switched. Used by external peripherals. 5V, 1A max.

2. RX Data. Console receive pin.

3. TX Data. Console transmit pin

4. DC Power In. External power adapter plus input (13-15V).

5. USB Host Minus. For connecting USB devices.

6. USB Host Plus. For connecting USB devices.

7. DC Power In. Same as pin 4.

8. Docking Station Id. Identiﬁes device attached to the docking station.

Resistor between this pin and ground.

2 4 6 8 10 12

1 3 5 7 9 11