diff --git a/src/scpi.rs b/src/scpi.rs
index 7efec61..9df1f55 100644
--- a/src/scpi.rs
+++ b/src/scpi.rs
@@ -7,26 +7,9 @@ use scpi::NumericValues;
 
 use core::convert::{TryFrom, TryInto};
 use core::str;
-use core::str::Utf8Error;
-use scpi::ieee488::commands::*;
-use scpi::scpi::commands::*;
 use scpi::{
-    ieee488_cls,
-    ieee488_ese,
-    ieee488_esr,
-    ieee488_idn,
-    ieee488_opc,
-    ieee488_rst,
-    ieee488_sre,
-    ieee488_stb,
-    ieee488_tst,
-    ieee488_wai,
     nquery,
-    //Helpers
     qonly,
-    scpi_crate_version,
-    scpi_status,
-    scpi_system,
 };
 use scpi::suffix::{Amplitude, Db};
 use uom::si::frequency::{gigahertz, hertz, kilohertz, megahertz, Frequency};
@@ -147,6 +130,10 @@ pub struct Channel2SwitchCommand {}
 pub struct Channel3SwitchCommand {}
 pub struct ClockSourceCommand {}
 pub struct ClockDivisionCommand {}
+pub struct Channel0AttenuationCommand {}
+pub struct Channel1AttenuationCommand {}
+pub struct Channel2AttenuationCommand {}
+pub struct Channel3AttenuationCommand {}
 
 impl<T: Device + UrukulTraits> Command<T> for Channel0SwitchCommand {
     nquery!();
@@ -270,17 +257,68 @@ impl<T:Device + UrukulTraits> Command<T> for ClockDivisionCommand {
                                 .map_or(Err(Error::new(ErrorCode::IllegalParameterValue)),
                                         |token| token.try_into())?;
         trace!("Received master clock division factor: {}", div);
-        match div {
-            1.0 | 2.0 | 4.0 => {
-                debug!("Set master clock division as {}", div);
-                context.device.set_clock_division(div as u8)
-                                .map_err(|_| Error::new(ErrorCode::HardwareError))
-            }
-            _ => Err(Error::new(ErrorCode::IllegalParameterValue)),
+        if div == 1.0 || div == 2.0 || div == 4.0 {
+            debug!("Set master clock division as {}", div);
+            context.device.set_clock_division(div as u8)
+                            .map_err(|_| Error::new(ErrorCode::HardwareError))
+        } else {
+            Err(Error::new(ErrorCode::IllegalParameterValue))
         }
     }
 }
 
+impl<T:Device + UrukulTraits> Command<T> for Channel0AttenuationCommand {
+    nquery!();
+
+    fn event(&self, context: &mut Context<T>, args: &mut Tokenizer) -> Result<()> {
+        let attenuation: f32 = args.next_data(false)?
+                                    .map_or(Err(Error::new(ErrorCode::IllegalParameterValue)),
+                                            |token| token.try_into())?;
+        trace!("Received channel 0 attenuation input: {}", attenuation);
+        context.device.set_channel_attenuation(0, attenuation)
+                        .map_err(|_| Error::new(ErrorCode::HardwareError))
+    }
+}
+
+impl<T:Device + UrukulTraits> Command<T> for Channel1AttenuationCommand {
+    nquery!();
+
+    fn event(&self, context: &mut Context<T>, args: &mut Tokenizer) -> Result<()> {
+        let attenuation: f32 = args.next_data(false)?
+                                    .map_or(Err(Error::new(ErrorCode::IllegalParameterValue)),
+                                            |token| token.try_into())?;
+        trace!("Received channel 1 attenuation input: {}", attenuation);
+        context.device.set_channel_attenuation(1, attenuation)
+                        .map_err(|_| Error::new(ErrorCode::HardwareError))
+    }
+}
+
+impl<T:Device + UrukulTraits> Command<T> for Channel2AttenuationCommand {
+    nquery!();
+
+    fn event(&self, context: &mut Context<T>, args: &mut Tokenizer) -> Result<()> {
+        let attenuation: f32 = args.next_data(false)?
+                                    .map_or(Err(Error::new(ErrorCode::IllegalParameterValue)),
+                                            |token| token.try_into())?;
+        trace!("Received channel 2 attenuation input: {}", attenuation);
+        context.device.set_channel_attenuation(2, attenuation)
+                        .map_err(|_| Error::new(ErrorCode::HardwareError))
+    }
+}
+
+impl<T:Device + UrukulTraits> Command<T> for Channel3AttenuationCommand {
+    nquery!();
+
+    fn event(&self, context: &mut Context<T>, args: &mut Tokenizer) -> Result<()> {
+        let attenuation: f32 = args.next_data(false)?
+                                    .map_or(Err(Error::new(ErrorCode::IllegalParameterValue)),
+                                            |token| token.try_into())?;
+        trace!("Received channel 3 attenuation input: {}", attenuation);
+        context.device.set_channel_attenuation(3, attenuation)
+                        .map_err(|_| Error::new(ErrorCode::HardwareError))
+    }
+}
+
 /*
  *  Implement "Device" trait from SCPI
  *  TODO: Implement mandatory commands