OPERATIONAnnex LSM 5104-194 B 40-051 e 07/98Amplifier GainThe diode signal is set to the right range (graylevel between 50 and 200 - 8bit image / 750 and3500 - 12 bit image) with the help of gray filters and amplifier gain. The use of a lower filter densityshould be priorized against the use of a high gain value. The value of the amplifier gain of both channels(PMT and diode) should be set to one if possible. Because of a, parallel to the gain factor, increasingamplifier noise, a gain value of more than 2 should be avoided. The most important thing is, that nopixels are below the zero level and beyond the maximum range respectively.Fig. 4-180