Matrix Orbital LK204-24-USB - Manual (Page 15)

WARNINGS
•
RPM reading should not be used at 5V
•
There are no current limiting resistors
•
Maximum current draw is 1000mA
•
As of Firmware Revision 1.1, the default PWM frequency is
19.1Hz
•
Default voltage setting is 12V
2.2.2 Advanced GPO Power Select
12 Volt 5 Volt
Figure 10: High / Low Power Select
When the jumper is placed in the high power position, the unit supplies +12V to the advanced GPOs.
If the jumper is placed in the low power position +5V is supplied to the GPOs. For 12V, external power
supplied by a 3.5” floppy connector will be required.
Matrix Orbital LK204-24-USB 11