FlashCut CNC Section 5 Signal Generator
JP83 – DB to USB Ground
This connects the DB 25 ground to the USB ground. By default pins 1 and 2, 3 and
4, and 5 and 6 are jumped as pairs
.
JP84/JP85 – Input Power Select
These two jumpers enable you to choose between the internal power of the Signal
Generator and isolated power from an external source. Both jumpers must be set on
the same pair of pins (either both must be on pins 1 and 2 or both must be on pins 2
and 3).
Internal Power
This is the most convenient option and works well for most applications, but
negates some of the signal isolation. When JP84 shorts pins 1 and 2, OPT VCC
gets its power from the Internal 5V power source. When JP85 shorts pins 1 and
2, OPT GND is directly connected to the Internal GND.
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