VnmrJ Tips and Tricks
Cryo-driver DC condition: 1. Put system into tune mode. 2. Remove cable from pre amp input J5331, and install a BNC “T” in place. 3. Connect one end of “T” to voltmeter to measure Voltage, leave other end of “T” open. Measure voltage at J5331 (voltage should = 5.0V +/- .1V). 4. Connect 50 ohm load on “T”, measure…
Calibrate the Mass Flow Meter and Pressure Transducers. 1. Follow the procedures in “Calibration of Mass Flow Meter and Pressure Transducers” 2. Continue with “Adjust the Mass Flow and Ballast Tank Valves,” Adjust the Mass Flow and Ballast Tank Valves Procedure for reduction of vibrations associated with the compressed gas. 1. Remove the housing surrounding the CCC….
The closest thing there is is the np checklist. The one other thing that may give you a clue as to the culprit if the problem is reproducible, is to run debug. You will need to set up mini com. In a terminal window, cd script filename start minicom In the VnmrJ command line, type…
If you need to reverse the trays, CP31 for CP32, you must also train the rack position CP31:CLEAR. (9) Define Rack CP31:CLEAR (M)ove
Adjusting Mass Flow on a Varian Cryo Platform. Gas Regulator Tuning Procedure (MK1) With the CCC cold and operating at equilibrium (running at least 3 hours), the gas regulator valve should quickly be closed to finger tight and then opened 5 turns. The vernier needle valve on the inlet side of the cold loop should…