diff --git a/src/app.rs b/src/app.rs
index 5b19bd9..c24b33f 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -177,6 +177,10 @@ impl App {
 						CurrentDisplayMode::Spectroscope => self.mode = CurrentDisplayMode::Oscilloscope,
 					}
 				},
+				KeyCode::Esc => {
+					self.graph.samples = self.graph.width;
+					self.graph.scale = 20000;
+				},
 				_ => {},
 			}
 		};
diff --git a/src/display/mod.rs b/src/display/mod.rs
index 4f7373b..867aa92 100644
--- a/src/display/mod.rs
+++ b/src/display/mod.rs
@@ -34,19 +34,13 @@ pub trait DisplayMode {
 	// MUST define
 	fn axis(&self, cfg: &GraphConfig, dimension: Dimension) -> Axis; // TODO simplify this
 	fn process(&mut self, cfg: &GraphConfig, data: &Vec<Vec<f64>>) -> Vec<DataSet>;
+	fn mode_str(&self) -> &'static str;
 
 	// SHOULD override
-	fn handle(&mut self, _event: Event) {}
 	fn channel_name(&self, index: usize) -> String { format!("{}", index) }
 	fn header(&self, _cfg: &GraphConfig) -> String { "".into() }
-	fn references(&self, cfg: &GraphConfig) -> Vec<DataSet> {
-		let half_width = cfg.samples as f64 / 2.0;
-		vec![
-			DataSet::new("".into(), vec![(0.0, 0.0), (cfg.width as f64, 0.0)], cfg.marker_type, GraphType::Line, cfg.axis_color),
-			DataSet::new("".into(), vec![(half_width, -(cfg.scale as f64)), (half_width, cfg.scale as f64)], cfg.marker_type, GraphType::Line, cfg.axis_color),
-
-		]
-	}
+	fn references(&self, _cfg: &GraphConfig) -> Vec<DataSet> { vec![] }
+	fn handle(&mut self, _event: Event) {}
 }
 
 pub struct DataSet {
diff --git a/src/display/oscilloscope.rs b/src/display/oscilloscope.rs
index 615be7a..472c83e 100644
--- a/src/display/oscilloscope.rs
+++ b/src/display/oscilloscope.rs
@@ -1,7 +1,7 @@
 use crossterm::event::{Event, KeyModifiers, KeyCode};
 use ratatui::{widgets::{Axis, GraphType}, style::Style, text::Span};
 
-use crate::app::update_value_f;
+use crate::app::{update_value_f, update_value_i};
 
 use super::{DisplayMode, GraphConfig, DataSet, Dimension};
 
@@ -52,6 +52,12 @@ impl DisplayMode for Oscilloscope {
 		a.style(Style::default().fg(cfg.axis_color)).bounds(bounds)
 	}
 
+	fn references(&self, cfg: &GraphConfig) -> Vec<DataSet> {
+		vec![
+			DataSet::new("".into(), vec![(0.0, 0.0), (cfg.samples as f64, 0.0)], cfg.marker_type, GraphType::Line, cfg.axis_color),
+		]
+	}
+
 	fn process(&mut self, cfg: &GraphConfig, data: &Vec<Vec<f64>>) -> Vec<DataSet> {
 		let mut out = Vec::new();
 
@@ -117,10 +123,13 @@ impl DisplayMode for Oscilloscope {
 				KeyCode::Char('t') => self.triggering   = !self.triggering,
 				KeyCode::Char('e') => self.falling_edge = !self.falling_edge,
 				KeyCode::Char('p') => self.peaks        = !self.peaks,
-				KeyCode::Char('=') => self.depth       += 1,
-				KeyCode::Char('-') => self.depth       -= 1,
-				KeyCode::Char('+') => self.depth       += 10,
-				KeyCode::Char('_') => self.depth       -= 10,
+				KeyCode::Char('=') => update_value_i(&mut self.depth, true, 1, 1.0, 0..65535),
+				KeyCode::Char('-') => update_value_i(&mut self.depth, false, 1, 1.0, 0..65535),
+				KeyCode::Char('+') => update_value_i(&mut self.depth, true, 10, 1.0, 0..65535),
+				KeyCode::Char('_') => update_value_i(&mut self.depth, false, 10, 1.0, 0..65535),
+				KeyCode::Esc => {
+					self.triggering = false;
+				},
 				_ => {}
 			}
 		}