1. Interaction between Keithley 6485 pico-ammeter and the PC through LabViewBy
Shahab Khan

2. Development Process Learned some LabView and SCPI language
Wrote Program with help of examples
Had a lot of problems getting the program to read non-zero values from the 6485
With much help from the Keithley and National Instruments Technicians, finally got it to work

3. Experimental setup to test 6485
Function Generator, settings: frequency~.5mhz ; max voltage ~ 5V
8.6 Mega Ohm Resistor
Made simple circuit with 6485 probe
Should observe alternating current in the micro Ampere range

5. Controls Toggle Auto Range
Set Manual Range (faster if manually set range)
Set wait time between subsequent measurements
Set a background current value to subtract from all the readings

6. Readings Chart to observe the measurements
Numerical indicator to read last measurement
Number of Readings Indicator
Data Analysis after data acquisition:
Mean, standard deviation, variance, etc
Option to save current readings into a spreadsheet

7. Future Need to fine tune program to our specific experimental setup
Help Setup PMT, tower of cells, and rest of setup; then start taking data
Possibly acquire Read-back mechanism of xyz position, then configure that with LabView