search

slaclab / pysmurf

Other
2 stars 9 forks source link

All RTM slow DACs rail full scale negative during setDefaults #753

Closed Prakamya01 closed 1 year ago

Prakamya01 commented 1 year ago

Describe the bug

During setup, the hemt1 gate voltage sometimes goes full scale negative.

To Reproduce

Steps to reproduce the behavior:

  1. Connect hemt1 to a multimeter and oscilloscope
  2. run shawnhammer (i.e. shawnhammer -c /data/smurf_startup_cfg/smurf_startup_timingtests.cfg); keep an eye on the oscilloscope and multimeter
  3. see error

Expected behavior

Running shawnhammer runs set_amp_defaults() which sets hemt1 to 0.265V, so hammering at any time should reflect this

dpdutcher commented 1 year ago

Is this what is causing my UFM temperatures to shoot up by more than 100mK upon hammering? Because that's a major issue.

swh76 commented 1 year ago

Ready to PR (https://github.com/slaclab/pysmurf/pull/763) but unable to release due to https://github.com/slaclab/pysmurf/issues/764.