diff --git a/dl814_k7_cal_coarse/data/20241114-国产调零板幅相测试/multiBitCorrInterSampleDiff.m b/dl814_k7_cal_coarse/data/20241114-国产调零板幅相测试/multiBitCorrInterSampleDiff.m
index f3a2859..abcdf1d 100644
--- a/dl814_k7_cal_coarse/data/20241114-国产调零板幅相测试/multiBitCorrInterSampleDiff.m
+++ b/dl814_k7_cal_coarse/data/20241114-国产调零板幅相测试/multiBitCorrInterSampleDiff.m
@@ -65,7 +65,7 @@ end
 
 for i = 1:channelNum
   ampEstSym(:,i) = abs(desiredPnt(:,i))./abs(desiredPnt(:,1));
-  angleEstSym(:,i) = mod((angle(desiredPnt(:,i))-angle(desiredPnt(:,1)))/pi*180,360);
+  angleEstSym(:,i) = unwrap((angle(desiredPnt(:,i))-angle(desiredPnt(:,1))))/pi*180;
 end
 
 %% figures
@@ -92,6 +92,7 @@ else
   plot(ampEstSym);
   legend({"ch1","ch2","ch3","ch4"});
   title("Amplitude Estimation");
+  axis tight
   ylim([min(ampEstSym,[],'all')-0.2,max(ampEstSym,[],'all')+0.2]);
   grid on; grid minor;
 
@@ -99,7 +100,8 @@ else
   plot(angleEstSym);
   legend({"ch1","ch2","ch3","ch4"});
   title("Angle Estimation");
-  ylim([min(angleEstSym,[],'all')-10,max(angleEstSym,[],'all')+10]);
+  axis tight
+  ylim([min(angleEstSym,[],'all')-5,max(angleEstSym,[],'all')+5]);
   grid on; grid minor;
 
 end