Cold Probe Preamp Testing
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…
