| Products > Test Equipment |
| Replicating/Copying HP/Agilent/Keysight 16065A High Voltage LCR Meter Fixture |
| << < (3/3) |
| mawyatt:
Mentally trace out the DUT current path, that's the important traces as the DUT current travels thru the DUT, and the ground is for shielding as the DUT current travels from the Hcur to Lcur with very little bleed off to ground by capacitance or leakage if kept reasonably low. Keep Potential lines thin and Current lines thicker. Open Calibration removes most of the parasitic shunt capacitance effects like cables/connectors, PCB and shields, while Short calibration removes most of the PCB trace, cable/connector and the added series components (discrete capacitors) resistance/inductance effects. Note for the Calibrations to be effective, the mechanical and electrical environments must be stable, a common source of error is the cables (if utilized). Best, |
| ZGoode:
I've gone ahead and mostly implemented your suggestions. I've laid out a ground plane on the top/bottom of the board that avoids going under important components. I've attached a PDF and gerber files below. As far as the capacitor values, I am going to go the route I mentioned earlier and order capacitors of various values to test the effective working frequency of. |
| ZGoode:
I've redesigned what I am going to call V2. The schematic is essentially the same, but the board layout has completely changed. The discharge resistor is mounted on the enclosure, not the board, which allows for better routing of the traces. |
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