Changes

*'''A grad student or lab technician''' must put the SiPM board back into place. Apply even pressure to the ends of the preamp boards until they are in place. Do not push so hard that it is bending the backplane. If needed, just place the preamp support end and screw it into the preamp supports until they are flush.

*'''A grad student or lab technician''' must put the SiPM board back into place. Apply even pressure to the ends of the preamp boards until they are in place. Do not push so hard that it is bending the backplane. If needed, just place the preamp support end and screw it into the preamp supports until they are flush.

*Close the main dark box opening and lock it tight to ensure that it is light sealed.  

*Close the main dark box opening and lock it tight to ensure that it is light sealed.  

*Turn on the power supply for the pulser and the op-amp first. Check that the voltages remain constant at 1.5 V and -10 V. Next turn on the power supply for the pre-amps and backplane electronics starting with the power for the control board.  

*Turn on the power supply for the pulser and the op-amp first. Check that the voltages remain constant at 1.5 V and -10 V. Next turn on the 60 V power supply for the pre-amps followed by the remaining power supplies. When turning off the voltages make sure the 60 V power supply is the last one turned off.

**Watch the control board's power supply current. If it exceeds. 0.38 amps, let a lab technician know immediately!

**Watch the control board's power supply current. If it exceeds. 0.38 amps, let a lab technician know immediately! The power supplies may have turned on in the wrong order or the pins on the backplane are making contact through the gasket.

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|[[File:LH-FiberQA_PulserPower.jpg|thumb|center|A view of the power supply powering the pulser and op-amp.]]

|[[File:LH-FiberQA_PulserPower.jpg|thumb|center|A view of the power supply powering the pulser and op-amp.]]