= Trouble Shooting - Bias =

== [=#biasdisconnection bias disconnection] ==

__Symptom__

- biasctrl is in state DISCONNECTED

__Solution__

- Do  _RECONNECT_
- Send a command like _REQUEST_STATUS_
- Sometime the bias crate will disconnect again, do _RECONNECT_

__Not Helping__

- do not close or kill biasctrl

== Overcurrent Status ==

__Symptom__

- when biasctrl ramped the voltage, it get in the state OVERCURRENT

__Solution__

- First try biasctrl/RESET_OVER_CURRENT_STATUS (maybe a few times)
- if it don't help try to ramp the voltage down
 - biasctrl/SET_GLOBAL_DAC 0

__Not Helping__

- do not close or kill biasctrl

== Status notReferenced ==

__Symptom__

- biasctrl is in state notReferenced

__Solution__

- start the Ramping again
 - biasctrl/START

__Not Helping__

- do not close or kill biasctrl