Laser beta lasermike LS8000-3 - Manual (Page 49)

LaserSpeed 8000-3 Instruction Handbook
Interfacing with the LS8000-3
Part No. 93463 / Drawing No. 0921-01561 Page 49 of 221 Revision A (Sep 2007)
Signal Grounds (Pins 11, 19, 21)
Multiple ground inputs have been supplied for the pulse outputs (High Speed,
User Scaleable, and Index) to provide good references for cabling.
Additionally, two power input pins (24 and 25, 24 VDC) and power input
ground pins (12 and 13) have been provided for cabling ease.
The Signal Grounds (pins 11, 19, and 21) are internally isolated from the
Power Ground (pins 12, 13). The Signal Ground pins are internally connected.
All input and output signals should be referenced to the Signal Grounds, not
the Power Ground. The Power Ground and the Signal Ground can be tied
together if isolation is not required for the application.
Isolation Required between Power Supply and I/O