diff --git a/app/testrpitx.cpp b/app/testrpitx.cpp
index b38e82c..06453dc 100644
--- a/app/testrpitx.cpp
+++ b/app/testrpitx.cpp
@@ -634,6 +634,7 @@ void SimpleTestBurstFsk(uint64_t Freq)
 void SimpleTestAtv(uint64_t Freq)
 {
 
+	//int SR = 1000000;
 	int SR = 1000000;
 	int FifoSize = 625 * 52;
 	unsigned char samples[FifoSize];
@@ -641,27 +642,61 @@ void SimpleTestAtv(uint64_t Freq)
 
 	atv atvtest(Freq, SR, 14, 625);
 	atvtest.start();
+	enum {patern_grey,patern_square,patern_move,patern_point};
+	int Mode=patern_move;
+	bool random_patern=true;
 	for(int frame=0;running;frame++)
 	{
+		int x,y;
+		y=rand()%625;
+		x=rand()%52;
+		if((frame%50==0)&&(random_patern))
+			Mode=rand()%(patern_point+1);
 		for(int i=0;i<625;i++)
 		{
 			for (int j = 0; j < 52; j++)
 			{
-				if(i%2==0)
-					samples[i/2*52+j]=((i+j*frame)%255);
-				else
-					samples[i/2*52+j+52*312]=((i+j*frame)%255);
-				/*if(i%16<8)
-					samples[i*52+j]=(j%8<4)?0:255;
-				else
-					samples[i*52+j]=(j%8<4)?255:0;*/
+				switch(Mode)
+				{
+					case patern_grey:
+					{
+						samples[i*52+j]=255*(j/52.0);
+					}
+					break;
+					case patern_square:
+					{
+						if(i%64<(frame%64))
+							samples[i*52+j]=(j%16<8)?255*(j/52.0):255*(1-(j/52.0));
+						else
+							samples[i*52+j]=(j%16<8)?255:0;
+					}
+					break;
+					case patern_move:
+					{
+						samples[i*52+j]=((i+j*frame)%255);
+					}
+					break;
+					case patern_point:
+					{
+						if((i==y)&&(j==x))
+							samples[i*52+j]=255;
+						else
+							samples[i*52+j]=0;
+					}
+					break;
+
+				}
+				
+				
+					
 			}
 		}	
 		
 		
 	
 		//atvtest.SetTvSamples(samples,FifoSize/4);
-		atvtest.SetFrame(samples,625);
+		
+			atvtest.SetFrame(samples,625);
 		usleep(40000);
 	}
 }
diff --git a/src/atv.cpp b/src/atv.cpp
index 17fa61c..74cf13d 100644
--- a/src/atv.cpp
+++ b/src/atv.cpp
@@ -25,7 +25,7 @@ This program is free software: you can redistribute it and/or modify
 #include <stdlib.h>
 
 //#define CB_ATV (6 * 4 + 5 * 4 + 5 * 4 + (304 + 305) * (4 + 52 * 2))
-#define CB_ATV 68000
+#define CB_ATV 70000
 
 atv::atv(uint64_t TuneFrequency, uint32_t SR, int Channel, uint32_t Lines) : dma(Channel, CB_ATV, Lines * 52 + 3)
 // Need 2 more bytes for 0 and 1
@@ -38,7 +38,7 @@ atv::atv(uint64_t TuneFrequency, uint32_t SR, int Channel, uint32_t Lines) : dma
     clkgpio::SetCenterFrequency(TuneFrequency, SampleRate);
     clkgpio::SetFrequency(0);
     clkgpio::enableclk(4); // GPIO 4 CLK by default
-    syncwithpwm = false;
+    syncwithpwm = true;
 
     if (syncwithpwm)
     {
@@ -91,7 +91,7 @@ void atv::SetDmaAlgo()
     for (int frame = 0; frame < 2; frame++)
     {
         //Preegalisation //6*4*2FrameCB
-        for (int i = 0; i < 6 /*-frame*/; i++)
+        for (int i = 0; i < 5 + frame; i++)
         {
             //2us 0,30us 1
             //@0
@@ -247,7 +247,7 @@ void atv::SetDmaAlgo()
             cbp++;
         }
         //(304+305)*(4+52*2+2)CB
-        for (int line = 0; line < /*305*/ 304 + frame; line++)
+        for (int line = 0; line < 305/* 317 + frame*/; line++)
         {
 
             //@0
@@ -370,12 +370,13 @@ void atv::SetFrame(unsigned char *Luminance, size_t Lines)
     {
         for (size_t x = 0; x < 52; x++)
         {
-            int AmplitudePAD = (Luminance[i * 52 + x]/255.0) * 6 + 1; //1 to 7
+            int AmplitudePAD = (Luminance[i * 52 + x]/255.0) * 6.0 + 1; //1 to 7
+             // usermem[i* 52 + x] = (0x5A << 24) + (AmplitudePAD & 0x7) + (1 << 4) + (0 << 3);             // Amplitude PAD
             if (i % 2 == 0)                                                                                      // First field
-                usermem[i * 52 + x] = (0x5A << 24) + (AmplitudePAD & 0x7) + (1 << 4) + (0 << 3);             // Amplitude PAD
+                usermem[i* 52 /2 + x] = (0x5A << 24) + (AmplitudePAD & 0x7) + (1 << 4) + (0 << 3);             // Amplitude PAD
             else
-                usermem[i * 52 + x] = (0x5A << 24) + (AmplitudePAD & 0x7) + (1 << 4) + (0 << 3);             // Amplitude PAD
-
+                usermem[(i-1)* 52/2 + x+52*312] = (0x5A << 24) + (AmplitudePAD & 0x7) + (1 << 4) + (0 << 3);             // Amplitude PAD
+            
          }   
         /*for (size_t x = 0; x < 52; x++)
         {