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Entry  Fri Jan 29 09:52:29 2021, karthik, Notes, , PSOMA Temp Controller tuning 
    Reply  Wed Feb 3 17:32:29 2021, rana, Notes, Control System, PSOMA Temp Controller tuning 
       Reply  Wed Feb 3 17:56:52 2021, aaron, Notes, Control System, PSOMA Temp Controller tuning 
Message ID: 2622     Entry time: Fri Jan 29 09:52:29 2021     Reply to this: 2628
Author: karthik 
Type: Notes 
Category:  
Subject: PSOMA Temp Controller tuning 

[aaron, karthik]

We met around 930, Aaron gave a brief tour of Cryo, QIL, and EE until 10.

[karthik]

Temp Controller starting 10.981 kOhm, Current 5.66 mA ~29.8 MHz-> Drifting high, ~3.6 dBm

  • Temp knob finicky, use Temp Tune input?
  • PID has no recorded values..

10.963 - 88 mhz

10.954 - 114

10.988 - 11.3 -> 36, check VNA - catching sideband -> switch adjust on/off -> 15.61

Run Series 1

Start at 10.981, step down by small random decrements down to 10.95 and then back up again. Record waveforms into .li file

Logging parameters: duration 10s, 15.6kHz, prefix 29_01_KR

PID is default, see pic

Start End File suffix End freq.
10.981 10.978 104334 43
10.978 10.966 104734 80.1
10.966 10.960 104820 98.8
10.960 10.953 104918 123
10.953 10.963 105213 82
10.963 10.976 105314 50.3
10.976 10.995 105353 6.44
10.981 10.984 105539 35.6-26.1
10.984 10.990 105614 7.3

Stopping here, set parameters back to original, before I play with PID etc, will analyze previous data and iterate from there..

 

 

 

 

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