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HV
High Voltage Test (SB)
The HV command invokes a test used to determine the optimum high voltage setting for the photomultiplier. Once the instrument is properly setup (see Appendix F - jumper J2 must be moved during the HV test and returned afterwards), the HV command starts an automatic high voltage test and writes the results to HVJJJYY.III.
The HVSET command can then be used to set the High Voltage. Alternately, after the instrument is returned to normal operation, an adjustment can be made while monitoring the high voltage during multiple AP tests.
This test is normally used in the factory during the final set-up stages of manufacture, or in the field if it is suspected that the setting is not correct. The Standard Lamp is turned on, the iris is opened, FW#1 is put to position 1, and FW#2 is set to position 0.
See the HVSET command, and Appendix F for more details on the HV test.
To run a manual high voltage test for multiboard (old electronics) use HVB.