Matrix Orbital LK162B-7T - Manual (Page 14)

Command Summary 10
Alternate USB Header
Some advanced applications may prefer the straight four pin connection offered through the Optional
Alternate USB Header. This header offers power and communication access in a simple interface
package. The Optional Alternate USB Header may be added to the LK162B-7T-USB for an added charge
as part of a custom order. Please use the Contact section to request more information from the friendly
Matrix Orbital sales team.
4.3 Common Features
General Purpose Outputs
Figure 11: GPO Header
Table 8: GPO Pinout
Pin Function
1 GPO 1
2 GND
3 GPO 2
4 GND
A unique feature of the LK162B-7T is the ability to control relays
* and other external devices using
either one or six 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 two row, fourteen 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.
Alternate Power Connector
Figure 12: Alternate Power Connector
Table 7: Alternate Power Pinout
Pin Function
1 Vcc
2 Gnd
3 Gnd
4 NC
The Alternate Power Connector provides the ability to power the LK162B-7T using a second cable. The
Tyco 171825-4 style header is particularly useful for connecting to an unmodified floppy power cable, a
171822-4 for example, from a PC power supply for a simple bench power solution.
*Note: To apply power via pin 4, move the 0 ohm resistor from R51 to R52. The R52 configuration is
better suited to applying 12V power to an extended voltage display.