Matrix Orbital LK162A-4T - Manual (Page 13)

9 Command Summary
4.2 USB Model
Four Pin USB Header
Figure 8: Four Pin USB Header
Table 5: USB Pinout
Pin Function
1 GND
2 D+
3 D-
4 Vcc
The LK162A-4T-USB comes with a keyed, friction lock style USB connector to fulfill both communication
and power needs. This special header requires a CBL-USBA24PIN3FT cable. Most commonly used with a
PC, this connection creates a virtual com port that offers a simple power solution with a familiar
communication scheme.
4.3 Common Features
General Purpose Outputs
Figure 9: GPO Header
Table 6: GPO Pinout
Pin Function
1 GPO 1
2 GND
3 GPO 2
4 GND
A unique feature of the LK162A-4T is the ability to control relays
* and other external devices using
either one of two General Purpose Outputs. Each can source up to 10mA of current at five volts when
on or sink 20mA at zero volts when off. The single row, four pin header can be interfaced to a number
of female connectors to provide control to any peripheral devices required.
*Note: If connecting a relay, be sure that it is fully clamped using a diode and capacitor in order to absorb any
electro-motive force (EMF) which will be generated.