Why do I regularly have to increase the applied high voltage (autotune voltage) to maintain performance?
This is normal for all types and brands of electron multipliers. Over the life of a multiplier, the voltage applied to it will need to be increased regularly to maintain the gain (performance) of the multiplier. In general, the average rate of necessary voltage increase is greatest in the early months of the multiplier’s life. If it has been 1-2 years since a user has had a new multiplier, they may forget this and be surprised when comparing the rate of voltage change of the previous multiplier (at the end of its life) with that of the new multiplier.
