diff --git a/src/dds.rs b/src/dds.rs
index df3b618..df5a356 100644
--- a/src/dds.rs
+++ b/src/dds.rs
@@ -270,13 +270,21 @@ where
 		let resolutions :[u64; 3] = [1 << 32, 1 << 16, 1 << 14];
 		let ftw = (resolutions[0] * f_out / self.f_sys_clk) as u32;
 		let pow = ((resolutions[1] as f64) * phase_offset / 360.0) as u16;
-		let asf = ((resolutions[2] as f64) * amp_scale_factor) as u16;
+		let asf :u16 = if amp_scale_factor == 1.0 {
+			0x3FFF
+		} else {
+			((resolutions[2] as f64) * amp_scale_factor) as u16
+		};
 		// Setup configuration registers before writing single tone register
 		self.set_configurations(&mut [
 			(DDSCFRMask::RAM_ENABLE, 0),
 			(DDSCFRMask::DIGITAL_RAMP_ENABLE, 0),
+			(DDSCFRMask::OSK_ENABLE, 0),
 			(DDSCFRMask::PARALLEL_DATA_PORT_ENABLE, 0),
 		])?;
+		self.set_configurations(&mut [
+			(DDSCFRMask::EN_AMP_SCALE_SINGLE_TONE_PRO,	1),
+		])?;
 		// Transfer single tone profile data
 		self.write_register(0x0E + profile, &mut [
 			((asf >> 8 ) & 0xFF) as u8,
@@ -288,7 +296,7 @@ where
 			((ftw >> 8 ) & 0xFF) as u8,
 			((ftw >> 0 ) & 0xFF) as u8,
 		])
-	}
+	}	
 
 }