Log entry time 03:03:50 on May 08, 2012

Entry number 383094

This is the gain linearity for BPM receiver, I tried for different div.
each picture shown in attachment contains 8 pictures, corresponding
AX+,AX-.AY+,AY-,BX+,BX-,BY+,BY-
Here I tested for div=0,2,3. for each div setting, 1 picture I tried to
set gain2=0, and change gain1 from 0 to 63, for another picture, I set
gain 1=0 and adjust gain2 from 0 to 63. you can see the linearity of it.
some of channel is not very linear,the signal of that will contain double
peak or trible peak. this is much easier to happen in high gain.

div=0,gain2=0,change gain1

div=0,gain1=0,change gain2

div=2,gain2=0,change gain1

div=2,gain1=0,change gain2

div=3,gain2=0,change gain1

div=3,gain1=0,change gain2

Figure 7

Figure 8