Index: trunk/FACT++/ScriptsForDimCtrl/FeedBackOn
===================================================================
--- trunk/FACT++/ScriptsForDimCtrl/FeedBackOn	(revision 13708)
+++ trunk/FACT++/ScriptsForDimCtrl/FeedBackOn	(revision 13708)
@@ -0,0 +1,123 @@
+# dimctrl script
+>
+> -------------------------------------------
+> Bias and Feedback StartUp (Current Calibration)
+> -------------------------------------------
+
+.w 2000
+# As a First step we want to calibrate the current, which are read from the bias crate,
+# and not take a DRS calibration, as it is mentioned in the data taking page...
+# so for this we should get the feedback and biasctrl programs into known states
+# I think it is good to try a RECONNECT to the bias, and make sure the voltage is off
+#
+# NOTE:
+# The ideas in the line above are both valid, but both not done.
+# This is *not good*
+
+# Since we do not know, what the feedback program is doing at the moment, we should as well,
+# tell it to keep its mouth shut ... just to be sure, we know whats going on
+> stopping feedback
+FEEDBACK/STOP
+.w 2000
+# stopping should always be possible, and end in state 'Connected'(6)
+.s FEEDBACK 6
+> ..done
+
+#BIAS_CONTROL/RECONNECT
+# If we were disconnected, and this was the first try of the night, the bias_ctrl should
+# be in state 'VoltageOff'(7) more or less immediately
+#.s BIAS_CONTROL 3
+#.s BIAS_CONTROL 7 5000
+# if these assumptions are all wrong, then we might have been properly connected anyway,
+# and just have to ramp down... lets do it, but wait forever, in case it does not work
+> switching off bias
+BIAS_CONTROL/SET_ZERO_VOLTAGE
+.w 2000
+.s BIAS_CONTROL 7
+> ...done
+
+# in case we reach this line, the voltages are all off, and the feedback does not do anything
+# So lets do the current calibration, therefor we tell the bias crate to ramp up just 1 single DAC count(~22mV)
+# the result of this action is, to get bias_ctrl into the state 'VoltageOn'(9), but since we only go one DAC count it shouldn't take long
+> setting bias globally to 1 DAC
+BIAS_CONTROL/SET_GLOBAL_DAC 1
+.w 2000
+.s BIAS_CONTROL 9
+> ...done
+
+# now we may tell the feedback program to calibrate the currents ...
+# I do not understand, if I have to explicitely allow the feedback program to generate output,
+# or if it just produces output...
+# As far as I understand, the feedback output enable status is the same,
+# as it was before I send the STOP command... so it is unknown at this point.
+# and in addition enabling or disabling the output, when STOPed is not possible as far as I know...
+# I try to enable it anyway.
+> enabling output for feedback
+FEEDBACK/ENABLE_OUTPUT yes
+.w 2000
+> ...done
+
+> calibrating bias crate current readings...
+FEEDBACK/CALIBRATE_CURRENTS
+.w 5000
+# in order to find out when the calibration ends, we have to wait for the transistion from state
+# 'Calibrating'(13) back to 'Connected'(6)
+.s FEEDBACK 13
+.s FEEDBACK 6
+
+# Thomas Bretz told me, that the feedback, after this step has disabled its output
+# and is in the mode, we might call 'temperature control' even there is no temerature beeing controlled.
+# I don't know where the voltage is ... in order to perform the calibration, the feedback had to
+# ramp up to 2V below the operational voltage, i.e. about 1V below the breakdown voltage
+
+# We want to take a DRS amplitude calibration so we have to ramp down the bias voltage.
+# this 10sec wait is needed in order for the bias not to disconect all the time...
+> ... current calibration done
+.w 10000
+
+> switching off bias
+BIAS_CONTROL/SET_ZERO_VOLTAGE
+.w 5000
+.s BIAS_CONTROL 7
+> ...done
+
+# now we want to take a run, with dark counts events
+# so we need to ramp up the voltage
+# we want to use the 'current control' more so we give the commands for this...
+> switching on current controll feedback ...
+FEEDBACK/STOP
+FEEDBACK/START_CURRENT_CONTROL 0.0
+FEEDBACK/ENABLE_OUTPUT yes
+# the feedback should be in state 'CurrentControl'(12) now
+.s FEEDBACK 12
+> ... done
+> switching on bias
+# now we give the feedback a hint, that it may ramp ...
+BIAS_CONTROL/SET_GLOBAL_DAC 1
+# after this command the bias_ctrl should be in state 'VoltageOn'(9) after a second or so
+.s BIAS_CONTROL 9
+> ...1 DAC globally set
+# then usually it takes some time until the feedback has enough information to really start controlling the voltage
+# when the feedback actually kicks in, the bias is first in state 'Ramping'(5) for some seconds and finally in 'VoltageOn'(9)
+# again
+.s BIAS_CONTROL 5
+> ...ramping to nominal voltage
+.s BIAS_CONTROL 9
+> ...bias on
+# here we should wait 45 sec in order for the current control to get enough current readings and temp readings to stabilize..
+> waiting 45sec for the current control to stabilize...
+.w 45000
+> ... done
+
+
+# at the end the bias voltage should be ramped down, since in a few seconds a shifter wit ha flashlight
+# will come out to open the shutter...
+> switching OFF bias ... 
+BIAS_CONTROL/SET_ZERO_VOLTAGE
+.s BIAS_CONTROL 7
+> ...done
+> ----------------------------------------------------
+> Bias and Feedback StartUp (Current Calibration)
+> ... done.
+> ----------------------------------------------------
+>