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User name V. Sulkosky
Log entry time 17:43:29 on January20,2009
Entry number 257000
keyword=BigBite Raster SignalsToday, Kalyan and I fixed the problem of raster X underflowing at low
values. First the raster X and Y signals going into the ADC were
swapped. We fixed this problem first. Then we passed the raster X
signal into a attenuator module so that we could adjust the DC offset
and the attenuation of the signal before the ADC.
Figure 1 shows the raster pattern from run 5367 with raster X
underflowing. For this run raster X and Y were swapped going into the
ADC. Figure 2 shows the raster pattern after passing the raster X
signal into the attenuator. These plots are with a 3 mm by 3 mm raster.
FIGURE 1
FIGURE 2
